Best Java Jobs & Projects

We are seeking an exceptional developer who codes not just for compensation, but out of true passion for building great software. The ideal candidate must possess strong expertise in:

ASP.NET

JavaScript & Vue.js

knowledge of Kotlin & Java

SQL Server and other databases

Key Requirements:

Ability to quickly understand and work with complex, large-scale software systems.

Strong problem-solving and analytical skills.

Excellent communication skills with a preference for real-time discussions over calls.

Must be available and willing to collaborate via calls when needed (please do not apply if you only prefer chat-based communication).

We are looking for someone who thrives in challenging environments and can grasp new codebases in minimal time.

Must pass our small techincal exam

We are looking for a hands-on engineer to build, connect, and test third-party integrations for an AI platform. This person will work on external API connections, OAuth flows, AI-accessible tools, workflow automation, and end-to-end integration testing.

The role is focused on making external services usable by AI agents in a secure and reliable way. The engineer should be able to connect providers, define safe tool inputs and outputs, test real user scenarios, handle API failures, and make sure each integration respects user permissions and data isolation.

Skills

•⁠ ⁠Strong TypeScript, JavaScript, or Python.
•⁠ ⁠Third-party API integration experience.
•⁠ ⁠OAuth 2.0 experience, including scopes, consent flows, refresh tokens, and token expiry.
•⁠ ⁠REST APIs, HTTP clients, JSON, webhooks, and API documentation.
•⁠ ⁠AI tool-calling, function calling, MCP, or agent-tool integration experience.
•⁠ ⁠JSON Schema-style tool input design and validation.
•⁠ ⁠Experience with integration platforms such as Nango, Pipedream, Zapier Platform, Workato, or similar tools.
•⁠ ⁠Experience with workflow automation tools such as n8n.
•⁠ ⁠Experience with providers such as Google Workspace, Slack, Notion, HubSpot, GitHub, Jira, Linear, Salesforce, or Microsoft 365.
•⁠ ⁠Ability to test integrations using sandbox accounts, test users, and production-like data.
•⁠ ⁠Debugging skills for auth failures, expired tokens, rate limits, pagination, malformed payloads, and provider-specific API errors.
•⁠ ⁠Understanding of user permissions, data isolation, audit logs, and least-privilege access.
•⁠ ⁠Backend API experience, preferably with FastAPI or similar frameworks.
•⁠ ⁠Redis, PostgreSQL, or event/state handling experience.
•⁠ ⁠SDK development experience in TypeScript or Python.
•⁠ ⁠Automated testing experience with pytest, TypeScript type checking, or integration test suites.
•⁠ ⁠Basic Docker, Kubernetes, or cloud deployment knowledge.

I have written a review paper and have already built a figure using ChatGPT. I need a freelancer to replicate this figure using BioRender. The task requires attention to detail and accuracy to ensure the figure is identical to the original. The ideal candidate should have experience in creating scientific figures and be proficient in using BioRender.

Full-Stack Mobile & Web Developer

OGV i looking for a full-time Full-Stack Mobile & Web Developer to maintain, improve, and support our mobile casino app, website, admin tools, APIs, wallet flows, payment integrations, and platform operations.

This role is not for a basic website developer. We need someone who can work across both the front end and back end of a live transaction-based platform where accuracy, security, uptime, and fast bug fixes matter.

Responsibilities
• Maintain and improve the mobile casino app, sportsbook
• Fix front-end and back-end bugs quickly and properly
• Work on player registration, login, app download, deposit, withdrawal, wallet, and promo flows
• Support Android APK and iOS/TestFlight builds
• Build and improve admin tools, dashboards, and internal reporting
• Integrate and troubleshoot third-party APIs, webhooks, payment tools, crypto tools,
SMS/WhatsApp, analytics, and affiliate tracking systems
• Monitor production issues, server logs, database errors, and transaction problems
• Support staging, testing, deployment, rollbacks, and live platform updates
• Document changes and communicate clearly with operations, support, and management

Required Qualifications
• 3–5+ years of full-stack development experience
• Strong mobile app experience with React Native or Flutter
• Strong web experience with React.js / Next.js
• Backend experience with Node.js, Python, PHP, Java, or similar
• Strong knowledge of REST APIs, webhooks, authentication, and role-based access
• Database experience with PostgreSQL, MySQL, MongoDB, or similar
• Experience with payment, wallet, crypto, fintech, e-commerce, or other transaction-based systems
• Comfortable working with live production systems
• Git/GitHub or GitLab experience
• AWS, Google Cloud, Azure, or general server/deployment experience
• Strong understanding of security basics, API protection, audit logs, and data integrity

Preferred Experience
• iGaming, online casino, sportsbook, fintech, crypto, or payments experience
• Wallet transaction logic, deposit/withdrawal flows, pending balances, and reconciliation
• Admin panel development
• KYC, AML, affiliate tracking, analytics, or bonus/promo system experience
• AppsFlyer, WhatsApp/SMS APIs, payment gateways, or crypto processor integrations

Ideal Candidate
The right person is reliable, detail-oriented, fast at debugging, careful with live systems, and able to explain technical issues in simple terms. You should be comfortable working with a non-technical operations team and understand that every wallet, payment, and player-account issue has real-money consequences.

Must-Haves
• Full-stack development ability
• Mobile app development experience
• Backend/API experience
• Database experience
• Payment or transaction-flow experience
• Production bug-fixing experience
• Security awareness
• Strong communication
• Ability to test before deploying

Position
Type: Full-time
Role: Full-Stack Mobile & Web Developer
Industry: Online casino / sportsbook / fintech-style platform
Location: Remote or hybrid, depending on candidate
Start Date: Immediate / flexible

To apply, please send your resume, portfolio or GitHub, examples of apps/platforms you have worked on, and a short summary of your experience with mobile apps, backend systems, and payment or transaction-based platforms.

We are seeking a skilled developer to create a tournament website that will eventually be scaled into a mobile and desktop app. The ideal candidate will have experience in both web and app development, ensuring a seamless transition between platforms. The project requires a strong understanding of user interface and user experience to ensure the app is engaging and easy to use. If you have a passion for developing dynamic and interactive applications, we would love to hear from you!

• Describe your recent experience with similar projects
• Include a link to your GitHub profile and/or website

TradeHub.com.au

We are looking for an experienced full-stack developer to help stabilise and complete a production-ready web platform called TradeHub.

TradeHub is a construction/trade industry marketplace built with:

Next.js (App Router)
Supabase
PostgreSQL
Stripe
Vercel
TypeScript

The platform is already substantially built and deployed.
This is NOT a greenfield build.

We need a developer who is highly experienced with:

Next.js App Router
Supabase auth/RLS
PostgreSQL
Production debugging
State management
API hardening
Race condition debugging
Performance optimisation
Stripe integrations
Messaging systems
Current State of the Platform

The core system already exists, including:

Authentication
User profiles
Messaging
Job posting
Availability system
Profile strength engine
Admin dashboard
Premium subscriptions
ABN verification
Search/discovery system
Notifications
Stripe billing

The main requirement now is debugging, hardening, stabilising, and cleaning up logic inconsistencies.

Major Issues That Need Fixing
Messaging System Issues
Some message flows previously used in-memory store data instead of persistent DB hydration
Conversations/messages occasionally fail to hydrate correctly from Supabase
Direct conversation linking (?conversation=id) needs stabilisation
Race conditions when creating conversations
Unread message counts need consistency checks
Messaging persistence must survive refresh/reload properly
Profile Strength Engine Issues
Some profiles show 0/100 on profile pages while search cards show different scores
API/RPC fallback inconsistencies
Hydration timing problems causing incorrect scores
Client and PostgreSQL calculations must match exactly
Profile strength recalculation/refetch logic needs cleanup
Premium Enforcement Issues

Need complete audit of premium restrictions:

Free users seeing content they shouldn’t
Multi-trade restrictions inconsistently enforced
Search radius enforcement inconsistencies
Discovery API not always restricting free users correctly
Search ranking needs proper premium prioritisation
Search / Discovery Problems
Trade filtering inconsistencies
Some pages still using hardcoded trade lists instead of central catalog
Discovery ranking logic needs cleanup
Premium ordering must remain stable
Search relevance tuning required
Admin Dashboard Improvements

Admins must:

View all users
View all jobs
Upgrade accounts manually
Moderate users/jobs
See new account signups
Review account activity
Access message transcripts safely

Need:

Better admin tooling
Better data visibility
Cleaner moderation flows
Authentication / Session Problems
Logout/session race conditions
Redirect inconsistencies
Auth hydration edge cases
Profile creation race conditions
Middleware consistency checks
Supabase / Database Issues

Need review of:

RLS policies
RPCs
Duplicate schema systems
Legacy fields
Trade models
Subscription models
Data consistency

Some systems evolved over time and now require simplification/refactoring.

QA / Testing

We already have Playwright test suites.

Need developer to:

Run and stabilise E2E tests
Fix failing tests
Improve reliability
Reduce console errors/warnings
Harden selectors and flows

Current known issues include:

Ambiguous selectors
Broken redirect assumptions
State isolation issues
Guardrail path mismatches
Disabled action states
Tech Requirements

You MUST have strong experience with:

Next.js
Supabase
PostgreSQL
TypeScript
Stripe
Playwright
Production debugging
App Router architecture
RLS/security hardening

Bonus if you have:

Marketplace/platform experience
Messaging/chat systems experience
Subscription SaaS experience

I need a programmer to deploy software using the provided code and files. The ideal candidate will have experience in software deployment and be able to work efficiently with the given materials. This is a part-time project expected to last less than a month.

• Describe your recent experience with similar projects
• Include a link to your GitHub profile and/or website
• What frameworks have you worked with?
• Describe your approach to testing and improving QA

I am seeking to engage an experienced AWS DevOps Engineer to serve as a mentor in my professional development. The ideal candidate will guide me through practical, hands-on learning, share industry best practices, and help me navigate real-world technical challenges. Key responsibilities include explaining complex concepts in a structured manner, reviewing my work, enhancing my cloud architecture proficiency, and supporting my progression toward more advanced AWS engineering responsibilities.

IMPORTANT — READ BEFORE APPLYING

This is not an entry-level or mid-level role. We are looking for a developer who has shipped real production systems and actively uses AI tools to work faster and smarter. If you have not personally deployed a Next.js or Django application to AWS EC2, built a live CI/CD pipeline, and integrated Supabase into a production app, please do not apply.

AI-POWERED DEVELOPER , THIS IS A CORE REQUIREMENT

We expect you to actively use AI coding tools in your daily workflow. Not as a crutch, but as a force multiplier. You should be able to scaffold features faster, catch bugs earlier, write better documentation, and deliver more in less time because of how you work with AI. We will ask about your AI workflow during the interview.

ABOUT THE PROJECT

We are a product team with an existing full stack application — a React / Next.js frontend backed by a Django REST API and Supabase as the database and auth layer. The foundation is solid. What we need now is a senior developer who can own the full delivery cycle: build and integrate new features, keep the codebase clean, and ensure the system runs reliably on AWS with zero-touch deployments.

We move fast, communicate clearly, and expect full professional ownership — not someone waiting to be told what to do next. This is a long-term engagement with consistent hours for the right person.

WHAT YOU WILL OWN

• Onboard to the existing codebase independently and quickly, no extended hand-holding.
• Build and integrate new backend features in Django (REST APIs, models, serializers, business logic) and wire them to Supabase for data persistence, auth, and real-time events where applicable.
• Surface new features on the React / Next.js frontend — clean, performant UI that talks seamlessly to the backend.
• Set up and manage the production environment on AWS EC2 — server provisioning, Nginx reverse proxy, PM2 process management, environment config, and security hardening.
• Configure custom domain pointing and SSL certificates (Let's Encrypt / AWS ACM).
• Build a fully automated CI/CD pipeline (GitHub Actions or AWS CodePipeline) — merge to main → build → test → deploy, with no manual steps in between.
• Use AI coding tools actively to ship higher-quality code faster — we will notice if you don't.
• Maintain a professional Git workflow: clean branching, descriptive PRs, meaningful commits.
• Communicate proactively — blockers raised early, not after a deadline is missed.

SKILLS & STACK

MUST HAVE — NON-NEGOTIABLE:
→ React.js & Next.js
→ Django REST Framework & Python
→ Supabase (auth, database, RLS, real-time)
→ PostgreSQL
→ AWS EC2
→ Nginx & PM2
→ CI/CD pipelines (GitHub Actions or AWS CodePipeline)
→ DNS configuration & SSL setup
→ Linux / Ubuntu server management
→ Git & GitHub
→ AI coding tools (daily usage)

STRONG ADVANTAGE:
→ TypeScript
→ Node.js
→ Docker
→ AWS S3 / CloudFront
→ Supabase Edge Functions & Realtime
→ Redis & Celery
→ Jest / Pytest
→ Tailwind CSS
→ Terraform / Infrastructure as Code
→ AWS CodePipeline

WHAT "SENIOR" MEANS TO US

• 3+ years of professional full stack experience — Django and React/Next.js specifically, not just adjacent frameworks.
• You have integrated Supabase into a production app and understand its auth system, RLS policies, and real-time capabilities.
• You have provisioned an AWS EC2 instance from scratch, configured Nginx as a reverse proxy, and secured it — not just clicked through Heroku or Vercel.
• You have a CI/CD pipeline running in production right now — you can explain every step and defend your tooling choices.
• You use AI tools daily and can give a concrete example of how they improved your output on a real project. Vague answers here are a red flag for us.
• You write code that the next developer can read and maintain — not just code that runs today.
• You give realistic estimates, hit them, and flag risks before they become problems.
• Minimum 4-hour weekday overlap with EST Timezone

HOW TO APPLY — READ EVERY WORD

Generic and templated proposals are deleted without response. We give full attention to every proposal that follows these instructions precisely:

1. Brief intro — who you are and why you are the right fit (3–5 sentences, no filler).
2. Proof of Django + Supabase work — a live project, GitHub repo, or a clear description of a production integration you built and maintain today.
3. Proof of AWS + CI/CD work — show us a real deployment pipeline, not a course certificate.
4. Your AI workflow — which tools do you use, and give one concrete example of how they improved your output on a recent project.
5. Availability — weekly hours, your timezone, and your overlap with EST.
6. Your hourly rate in USD.

Start your proposal with the exact phrase:
"Production-ready. AI-powered."
This confirms you read this post in full. Proposals not beginning with this phrase will be declined immediately.

We look forward to hearing from developers who take their craft seriously. If that's you — apply now.

Role: Mobile App Developer (Android & iOS)
Key Responsibilities:
Design and develop mobile applications for both Android and iOS platforms
Integrate mobile applications with backend APIs and services
Build scalable, high-performance, and user-friendly applications
Collaborate with backend and AI systems for seamless data and model integration
Ensure code quality through testing, debugging, and performance optimization
Manage deployment and updates on Google Play Store and Apple App Store
Experience with Node.js / Firebase / .NET APIs is a plus
Required Technical Skills:
Cross-Platform Development (recommended for faster delivery):
Flutter (Dart) or React Native (JavaScript/TypeScript)
OR Native Development:
Android: Kotlin / Java
iOS: Swift / Objective-C
Common Requirements:
Strong understanding of REST APIs and backend integration
Experience with authentication systems (JWT, OAuth, Firebase Auth, etc.)
Third-party SDK integrations (Payment gateways, Analytics, etc.)
Knowledge of state management approaches (Provider, Bloc, Redux, etc.)
Familiarity with version control systems (Git)
Google Tag Manager / Firebase Analytics (preferred)
Experience with CI/CD pipelines for mobile applications
Event tracking and user behavior analysis
Good understanding of UI/UX best practices
Nice to Have:
Experience integrating AI/ML APIs into mobile applications
Familiarity with cloud platforms (AWS, GCP, or Azure)
Experience with real-time data handling (WebSockets, Firebase, etc.)
Knowledge of performance optimization and app analytics
Experience:
3 - 4 years of mobile development experience or a strong portfolio of deployed applications

Skills: App & Mobile Development

Skill Requirements:
- at least 2-3 years of Flutter experience for Android
- at least 2-3 years of experience in Java or Kotlin development for Android


- not really required, but would be good:
- experience in Linux app development, including for STBs.
- experience in integrating video/audio players (MPV, gstreamer, Exo) into apps

We are seeking a skilled Flutter app developer to create and optimize applications for Android TV, STBs, Linux, Mobile Apps. The ideal candidate will have experience in building responsive and user-friendly TV and mobile apps that leverage the unique features of the platform. You will collaborate with our design team to implement visually appealing interfaces and ensure smooth functionality across various devices. A strong understanding of Flutter and experience with Android TV development is essential. If you're passionate about creating innovative TV solutions, we want to hear from you!

UI/UX Designs are provided by our in house team via Figma

• Describe your recent experience with similar projects
• Include a link to your GitHub profile and/or website
• What frameworks have you worked with?
• Describe your approach to testing and improving QA
• Please list any certifications related to this project

I need to create a Groovy Script Task to retrieve punches for the day the employee is punch out. This is specifically for MTE Attestation Manual Time Entry attestation which means the employee is fixing a punch manually at the timecard and the Attestation question is supposed to show. I have attached the zip file with the model for Real Time attestation - when they use the punch tile - but when nit comes to manual attestation we have to substitute the Attestation Workflow Attributes API for a Script Task.


Let me know if you can achieve this.

I have attached an example of a script Task to add a comment to the punch the employee is adding through manual attestation so you can have an idea how it works



Thank you.

We have currently developed our own propriety CRM platform for the MCA/Fintech space. It is for the most part, complete for the exception of a few bugs. I am looking for someone with experience that can assist in reviewing all the JSON scripts and help debug the scripts while improving the current features. Some of the items we seem to find bugs are the following;
Correct Parsing of bank statements to extract correct information regarding the Rev, NSF , Current MCA Positions, etc..
Ability to enter Open text field of industry within the Merchant Deal details
Creating a proper filtering of to eliminate the industry restrictions from the lenders Guidelines
When manually creating the deal and entering the Merchant & Owner info; the fields do not initially save which requires us to go back and re-enter the information and save again.

Required Technical Skills (Core)
1. Backend Engineering (Critical)

The candidate must be able to own the backend architecture.

Languages / Frameworks (at least one at senior level):

Node.js (NestJS / Express)

Python (FastAPI / Django)

Java (Spring Boot)

Core backend competencies:



2. Financial & Banking Data Processing (Non-Negotiable)

Parsing and normalizing bank statements:

PDF

CSV

API-fed transaction data

Experience with:

Cash-flow analysis

Transaction categorization

Identifying recurring ACH debits

Detecting negative balance days

Data reconciliation and consistency checks

3. Court, Legal & External Data Integration

Experience integrating third-party data providers (API-first)

Familiarity with:
Entity matching techniques:
Business name vs DBA
Owner/principal matching
Fuzzy matching & confidence scoring

4. Rule-Based Decision Engines
Designing configurable underwriting / decision logic
Rule evaluation systems (if/else logic, scoring models, thresholds)

Ability to:
Externalize rules to DB or admin UI
Avoid hard-coding lender criteria
Versioning and auditability of rule changes

5. Document Processing & Watermarking
PDF and image manipulation
Dynamic watermarking:
Text-based and/or image-based watermarks
Persistent across download/share

Handling:
Bank statements
Contracts

6. Frontend Engineering (Strong but Secondary)
React (preferred), Vue, or Angular
Building:
CRM dashboards

Deal pipelines

Underwriting views

Secure frontend auth flows

Role-based UI permissions

7. Databases & Data Modeling
Schema design for:

Deals

Merchants

Documents

Legal records

Underwriting outputs

Indexing and performance optimization
Experience with:
JSON fields
Transactional consistency

We need support in automating the image extraction, converting the app from a web browser to an app, and scaling the database. We are looking to leverage AI in the creation of this app but have reaching a roadblock with our limited developer skills.

I’m looking for an experienced developer to build an MVP/prototype of an AI-powered inspection and reporting software for the electrical industry. The project involves integrating AI models for image and video analysis, and developing a user-friendly interface for reporting and data visualization. The ideal candidate will have experience in software development and AI technologies, with a focus on delivering a functional prototype within a short timeframe.

We are looking for an experienced automation engineer to build an AI-powered lead management and appointment booking system using GoHighLevel (GHL).

The goal is to automate the complete lead flow from capture to qualification, follow-up, and appointment booking.

Scope includes:

* GoHighLevel workflow automation setup
* AI-powered lead qualification using OpenAI/GPT
* SMS & email follow-up automation
* Appointment reminders and calendar booking
* Pipeline stage automation inside GHL
* Twilio integration for messaging/calls
* Webhook/API integrations where needed
* Lead tagging, routing, and notifications

Preferred skills:

* GoHighLevel (GHL)
* OpenAI / ChatGPT API
* Twilio
* Zapier / Make / n8n
* API integrations & webhooks
* CRM automation experience

Bonus if you have experience building automation systems for agencies, local businesses, or lead generation workflows.

Please share:
* Relevant automation projects
* Loom/video walkthroughs if available
* Your preferred automation stack
* Estimated timeline

This is initially a smaller project with potential for long-term collaboration.

We are hiring a highly experienced Chrome Extension Developer to join our growing AI-first engineering team.

This is not a beginner role.

We are looking for someone who has already built and shipped production-grade Chrome extensions used by real users at scale.

Share examples in your cover letter.

You should be the kind of engineer who understands browser internals, performance, security, architecture, and UX — not just someone who can inject scripts into pages and pray it works.

Explain the most sophisticated project you did in this niche and why was it complicated. How did you do it. Should be live example. Share the skills you got.

This is going to be full-time. Share your per month salary expectations in USD.

You will work closely with executive leadership, product, compliance, and DevOps to ensure Empowermint.AI operates at enterprise-grade reliability, security, and regulatory readiness.

Key Responsibilities
Systems Architecture & Engineering :
Architect and implement high-availability, fault-tolerant FinTech systems


Design scalable backend services for payments, transactions, escrow, and funding workflows


Lead system integration across AI/ML services, financial APIs, and blockchain infrastructure


Define and enforce engineering standards, documentation, and system governance

Security, Compliance & Risk :
Implement zero-trust security architecture and secure data pipelines


Ensure compliance with SOC 2, PCI-DSS, ISO 27001, GDPR, and financial data regulations


Oversee encryption standards (data at rest, in transit, key management)


Conduct threat modeling, penetration testing coordination, and risk mitigation

Cloud, DevOps & Reliability :
Own cloud architecture (AWS, Azure, or GCP)


Design CI/CD pipelines with infrastructure-as-code


Monitor system performance, uptime, and cost optimization


Lead incident response and post-mortem analysis

• Describe your recent experience with similar projects
• Please list any certifications related to this project
• How do you create a dependency map for systems operating in multi-tier architecture?
• How do you operationalize your projects?

I need to build a website for my KPO business. Can you help me with that?. It needs to be detailed and impressive. and properly functioning. Can you help me with that?

We are hiring an AI-native full-stack product builder to rapidly build an MVP for a verified dating web app.

The product will compete with platforms like bumble, but with a stronger trust layer: video screening, liveness checks, profile verification, AI moderation, and provider-capacity verification to reduce catfishing, fake profiles, scammers, and men misrepresenting wealth.

We need someone who can move fast, think like a product owner, and build a working web app from concept to launch.

Core MVP features:
- User onboarding for two user types
- Profile creation
- Photo and video verification
- Liveness / face-match verification
- Verified badge system
- Provider-capacity verification workflow
- Matching and messaging
- Admin dashboard for approvals, reports, and moderation
- AI tools to flag fake profiles, scam language, suspicious behaviour, and stolen images
- Payment integration for premium memberships

Ideal candidate:
- Strong full-stack experience
- Comfortable using AI tools to build quickly
- Experience with Supabase, Firebase, Next.js, React, Bubble, FlutterFlow, or similar
- Can integrate third-party APIs
- Understands trust, safety, privacy, and marketplace dynamics
- Can work independently without needing constant direction
- Has shipped real products before

This is not a normal dating app. The core product is trust, verification, and high-quality matching.

Please apply with:
1. Examples of web apps you have built
2. Your preferred tech stack
3. How quickly you could build a working MVP
4. Your proposed approach to video verification and fake-profile prevention

I use Thunderbird 115.18.0 (32-bit) on Windows 7. This plugin should work for this.

Sometimes I am typing emails, and often I always type in the same text. I want a plugin that you can set pre-determined texts.

When the plugin detects you are typing the first few charachters (user defineable) i.e 4 or 6 or 8 charachters of that Phrase, The plugin will then :

Make a pop up box nearby with that user-defined text.

The user can then click on that pop up, once the user clicks on that pop up, the text will be completed.

See the included photo.

Any ideas or suggestions or questions welcome

When replying to this requirement, please explain that you have read and understand the requirement, and how long it can take you to complete it, how many lines of code is involved approximately

We are seeking a skilled developer to create a web software using Claude AI. The ideal candidate will have experience in Claude AI programming and web development, with a strong understanding of integrating AI models into web applications. Responsibilities include designing, developing, and testing the software to ensure it meets our requirements. The project requires working closely with our team, building it together to ensure seamless integration and functionality, as well as allowing our team to learn the coding process.

About Us
KOKALOS MOBILE is a US-based technology consulting company delivering scalable software solutions across fintech, healthcare, e-commerce, AI, and cloud systems. We work with global talent and US clients on long-term technical projects.

Role Overview
We are seeking an experienced Software Developer with excellent English communication skills to work in a client-facing technical role. This is a worldwide remote position focused on direct interaction with US-based clients.

Responsibilities
Participate in client meetings and video calls with US-based customers
Clearly communicate technical concepts in fluent English
Understand client requirements and coordinate with technical teams
Support project discussions and technical alignment
Maintain strong and professional client relationships

Requirements
Proven experience as a software developer
Strong understanding of modern development stacks (web/mobile/backend)
Excellent spoken and written English
Comfortable in live client meetings and presentations
Strong communication, responsibility, and professionalism

What We Offer
100% remote, worldwide position
Work with US-based clients and international teams
Flexible collaboration structure
Long-term opportunities

Project Brief:
zzvoov is a system used to identify means of enforcement operated by the police.
The "zzVooV" system is based on sensors with innovative and smart technology that enables the driver to identify radar, laser, speed cameras and traffic cameras.
After installing the sensors in the vehicle you can receive and share alerts in real time from other users!


Requirement:
You will be responsible to fix some issues of Android app first.
Policy issue and warning of Play Store.

If things are going well, we may have more tasks in the near future.

Hello, I am from English Quest. We are currently looking for experienced JAVA DSA trainers for an upcoming projects. If you have strong expertise please feel free to contact .

We are seeking an experienced backend Java developer to enhance our AI platform. The role involves developing and maintaining server-side applications, ensuring high performance and scalability. The ideal candidate will have a strong understanding of Java and experience with Spring Framework. Familiarity with AI technologies is a plus. Join us to contribute to cutting-edge AI solutions.

We are seeking a skilled Node.js Developer to play a crucial role in enhancing the backend systems that drive our high-performance trading and analytics platform. In this position, you will be responsible for developing and optimizing the infrastructure that supports various components, including algorithmic trading tools, data ingestion pipelines, and large-scale backtesting engines. Your work will directly impact the efficiency and reliability of critical services, ensuring that they can handle the demands of thousands of active market participants. You will be involved in creating and maintaining a custom scripting environment that allows users to implement their trading strategies effectively. This role requires a deep understanding of Node.js and backend development best practices, as well as experience in building scalable systems capable of processing vast amounts of data with low latency. Additionally, you will collaborate closely with cross-functional teams, including traders, data scientists, and other developers, to refine and enhance our platform's capabilities. If you are passionate about technology and the financial markets, this is an outstanding opportunity to make a significant contribution in a dynamic environment.

For this role, the required skills and experience are listed below:

- Proficiency in Node.js, with a focus on performance profiling, memory management, and event-loop optimization.

- Strong working knowledge of PostgreSQL and MongoDB, particularly in large-scale implementations.

- A solid understanding of both object-oriented and functional programming paradigms, along with the ability to determine when to apply each.

- Experience in systems programming or developing performance-critical components using C++ and/or Java.

- Familiarity with a microservices architecture, including the deployment and management of multiple independent services.

I am seeking a WordPress Developer role that allows me to transition my academic knowledge into practical, hands-on experience. The ideal candidate will contribute meaningfully to projects and help me apply theoretical skills in real-world settings. This role is perfect for someone looking to make a significant impact and gain valuable experience.

We have a fast-moving pipeline of AI app ideas and need a senior vibe coder who can turn concepts into working products within days. You'll use the best AI-powered development tools available — Claude Code, Lovable.dev, Base44, Replit, Bolt — to build, iterate, and ship. If you live in the vibe coding workflow and have a portfolio of shipped AI apps to prove it, we want to work with you long-term.

Tools we expect you to use
Claude Code, Lovable.dev, Base44, Replit, Bolt.new, Cursor, v0 by Vercel, Windsurf, Tempo Labs

What you'll do
- Take rough product ideas and rapidly prototype working apps using AI builder tools
- Build LLM-powered features — chatbots, AI agents, automation workflows, smart dashboards
- Iterate fast based on feedback — we expect multiple versions per week, not per month
- Own each project end-to-end: UI, backend logic, database, and deployment
- Integrate third-party APIs, payment tools, and external data sources as needed
- Maintain clean project files that can be handed off or extended later

Requirements
- Demonstrable mastery of 3+ vibe coding tools — show us apps you've shipped, not just demos
- Strong experience integrating AI/LLM APIs inside builder platforms (Claude, OpenAI, Gemini)
- Excellent product instincts — you know when an AI-generated output needs fixing
- Available for ongoing collaboration, quick turnarounds, and async communication
- Bonus: experience with Supabase, Firebase, Stripe, or Zapier integrations

We are seeking a senior full-stack Java developer to enhance our e-commerce platform using Spring Boot. The role involves developing new features, optimizing performance, and ensuring scalability. The ideal candidate will have experience with Java, Spring Framework, and JavaScript, and be able to work independently to deliver high-quality solutions.

We are seeking a senior quant developer to build a multi-factor market neutral crypto trading algorithm. The role involves designing and implementing trading strategies using Python, with a focus on market neutrality and risk management. The ideal candidate will have experience in quantitative finance and a strong understanding of statistical arbitrage and market making strategies.

We are seeking an experienced quantitative developer / algorithmic trading engineer to design, build, backtest, and deploy a multi-factor, market neutral crypto trading algorithm for use on Binance and/or OKX.

This is not a basic trading bot. We are looking for someone with real experience building institutional-style trading systems, including strategy research, backtesting, risk management, exchange API integration, and live or paper-trading deployment.

The goal is to develop a system that can target high annualized returns while using disciplined risk controls, realistic assumptions, and market neutral portfolio construction. We understand that returns cannot be guaranteed, but we want a system designed for strong performance with thoughtful downside protection.

Core Requirements

The trading system should include:

Multi-factor signal engine
Multiple strategy modules
Market neutral long/short portfolio construction
Binance and/or OKX API integration
Backtesting framework
Live and/or paper-trading execution
Risk management controls
Trade logs and performance reporting
Documentation for ongoing operation and maintenance
Strategy Types We Are Interested In

The system may include strategies such as:

Long/short market neutral trading
Statistical arbitrage
Mean reversion
Momentum
Pair trading
Funding rate / basis strategies
Volatility breakout strategies
Regime-based allocation across strategies

We are looking for a developer who can also advise us on which strategies are realistic, scalable, and best suited for crypto futures/perpetual markets.

Risk Management Must Include

The system should have strong risk controls, including:

Position sizing rules
Exposure limits
Leverage controls
Stop-loss / take-profit logic
Max drawdown controls
Volatility-adjusted sizing
Correlation controls
Exchange risk limits
Emergency shutdown triggers

We do not want a system that relies on reckless leverage or unrealistic backtests.

Backtesting and Reporting

Backtests should include realistic assumptions for:

Trading fees
Slippage
Funding costs
Liquidity limits
Latency assumptions
Exchange constraints

Performance reporting should include:

Annualized return
Sharpe ratio
Sortino ratio
Max drawdown
Win rate
Profit factor
Monthly returns
Trade frequency
Exposure by asset and strategy
Preferred Skills

Strong candidates should have experience with:

Python
Binance API
OKX API
CCXT
Crypto futures/perpetual swaps
Quantitative research
Backtesting frameworks
Statistical modeling
Portfolio construction
Risk management
Cloud deployment / Docker
Database setup and trade logging
Deliverables

Expected deliverables include:

Strategy architecture document
Multi-factor signal engine
Backtesting environment
Historical performance report
Paper-trading or live execution engine
Binance and/or OKX API integration
Risk management module
Trade logging and reporting system
Technical documentation
Ideal Candidate

The ideal candidate has built real trading systems before, understands crypto market structure, can explain strategy logic clearly, knows how to avoid overfitting, and can produce clean, scalable code.

Please do not apply if your experience is limited to basic RSI/MACD bots or simple TradingView scripts. We are looking for someone who can think at an institutional level.

Please Answer These Questions
Have you built crypto trading algorithms before?
Have you integrated with Binance or OKX APIs?
What market neutral crypto strategies do you believe are most effective?
How do you prevent overfitting in backtests?
Can you build both backtesting and live execution?
What tech stack would you recommend?
Can you share examples of previous trading systems or performance reports?
Engagement Structure

We prefer to start with a paid discovery / architecture phase, then move into full development.

Potential phases:

Strategy design and feasibility review
Backtesting and research environment
API integration and paper trading
Live deployment and monitoring
Ongoing optimization and maintenance

We are open to hourly or fixed-price depending on experience.