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I have a 2021 built node express sqeulize postgres sql app deployed on heroku before that needs to be redeployed to make my resume look reasonable

Task is to redeploy this app on a more permanent platform like AWS
https://github.com/btcblade/aa-theblockchainlord

Skills: Web Application, Website Redesign, PostgreSQL, ExpressJS, Node.js

I have a issue in my full-stack web application that needs to be fixed. The problem is with the user login authentication--some users are unable to log in despite entering the correct credentials. This might be related to session handling, token expiration, or backend validation.

The app is built using React, Node.js, Express, and MongoDB. I need someone with strong expertise in these technologies who can quickly identify and resolve the issue.

Requirements:
- Strong experience in React, Node.js, Express, and MongoDB
- Expertise in authentication mechanism (JWT, session-based authentication, etc.)
- Ability to debug and fix issues efficiently
- Quick turnaround time

If you've worked on similar issues before, please apply. Looking forward to working with you!

Skills: Node.js, MongoDB, React, ExpressJS, Web Application

We are looking for a skilled developer to create a script that integrates with the Ticketmaster API to fetch venues and events, and subsequently loads this data into a MongoDB database. The ideal candidate will have experience working with API integrations, Javascript, and MongoDB, ensuring data passes model validation. This project is essential for our application to provide up-to-date event information. If you have a strong background in backend development and are familiar with JavaScript, we would love to hear from you!

Skills: API, JavaScript, API Integration, ExpressJS, MongoDB

We are looking for a skilled developer to create a button that will notify users when their proxies are set to expire in 24 hours. The button should be user-friendly and integrate smoothly into our existing system. Ideal candidates should have experience with UI/UX design and backend integration to ensure functionality. Please include your previous work samples related to similar projects in your application.

Skills: Network Administration, ExpressJS, PostgreSQL, Vue.js, Cybersecurity Management

Key Responsibilities:


Working in a technical and management role, as part of a scrum team to deliver high quality, secure and scalable software solutions.
Provide strategic technical leadership on critical projects, collaborating with the Head of Development and Architecture teams to define product roadmaps, design solutions, and ensure technical feasibility.
Lead the design and development of complex software solutions using a combination of technologies, demonstrating strong expertise in at least two of the following:
React JS
Node JS
Ruby on Rails
Champion best practices in software development methodologies (e.g., Agile, Waterfall), ensuring efficient and high-quality delivery.
Ensure code quality, performance, and maintainability through code reviews with team members and educate through constructive comments.
Experience in performance optimization techniques and troubleshooting complex performance issues in production environments.
Ownership of best CI/CD practices, for maintaining the quality of software products
Establish and maintain high coding standards, architecture principles, and code review processes to ensure code maintainability, security (DevSecOps), and scalability.
Collaborate closely with product managers, designers, and other stakeholders to understand requirements, translate them into actionable technical solutions, and provide technical guidance throughout the development lifecycle.
Stay abreast of the latest trends and technologies within the software development landscape, actively researching and evaluating new solutions for potential integration.
Mentor junior developers, providing guidance on technical skills, best practices, and career development.
Lead code reviews, providing constructive feedback to improve code quality and knowledge sharing within the team.
Troubleshoot and debug complex software issues, identifying root causes and implementing effective solutions.
Participate in technical discussions and provide expert advice to internal stakeholders.

Skills: Node.js, API, RESTful API, MongoDB, JavaScript, ExpressJS

We are seeking a skilled software engineer to complete our existing web application and develop a mobile app version for submission to the app store. The ideal candidate should have experience with front-end and back-end development as well as mobile app development. You will be responsible for ensuring functionality, performance, and an excellent user experience across all platforms. If you are passionate about coding and have a proven track record of delivering high-quality applications, we would love to hear from you.

Skills: PostgreSQL, Node.js, React, Android, iOS, Smartphone, Mobile App Development, Auth0, ExpressJS, Tailwind CSS

We're seeking an experienced MERN Stack Integration Engineer to support the integration of two newly developed applications into our Odoo ERP system. This role is hands-on, requiring expertise in API development, Odoo integration, Python scripting, and database management. The ideal candidate will have strong problem-solving skills and experience working in cloud-based environments, including the Knime workflow automation platform.

Required Skills:

- MERN stack development (MongoDB, Express, React, Node.js).
- Proven experience integrating applications with Odoo ERP through API development and backend scripting.
- Proficiency in Python for Odoo automation and data handling.
- Additional experience in Odoo customization beyond integrations.
- Strong background in RESTful APIs, GraphQL, JSON-RPC, and authentication mechanisms (OAuth, API keys, JWTs, etc.).
- Familiarity with AWS services such as EC2, RDS, Kubernetes, and S3.
- Experience with MongoDB and PostgreSQL database management and optimization.
- Familiarity with Knime for ETL workflows and data automation.
- Familiarity with Power BI / Looker Studio for data visualization and reporting.
- Strong problem-solving skills and the ability to debug complex integration issues.
- Excellent written and verbal communication skills in English.
- Must be able to work within EST time zone.

Skills: ExpressJS, Odoo, RESTful API, GraphQL, Amazon Web Services, React, Node.js, MongoDB, Python, PostgreSQL

We are currently working on an exciting test project utilizing React.js for the frontend and ExpressJS for the backend. The frontend is developed and ready for presentation. We are looking for an experienced backend developer who possesses a strong understanding of responsive web design and development.

Qualifications:
- Proven experience in backend development with Node.js.
- Strong knowledge of responsive web design principles.
- Familiarity with RESTful APIs and database management.
- Excellent problem-solving skills and attention to detail.

Looking forward to hearing from you and potentially working together on this project!

Skills: Node.js, Web Development, Mongoose, RESTful API, Database

Looking for a developer proficient in Next.js, Node.js, and Firebase to implement specific features and resolve existing issues in a web application. The task involves backend API development, authentication setup, database integration and performance optimization using Firebase services.

Key Responsibilities:
•⁠ ⁠Develop and optimize APIs using Node.js & Firebase
•⁠ ⁠Implement Firebase Authentication (Google, Email/Password, etc.)
•⁠ ⁠Work with Firestore or Realtime Database for data storage
•⁠ ⁠Ensure smooth integration between Next.js and Firebase
•⁠ ⁠Troubleshoot and debug any existing Firebase-related issues

Requirements:
•⁠ ⁠Hands-on experience with Next.js & React
•⁠ ⁠Strong knowledge of Firebase services (Auth, Firestore, Functions, Storage)
•⁠ ⁠Experience working with serverless functions in Firebase
•⁠ ⁠Understanding of Node.js backend development

Application Details:
•⁠ ⁠Relevant Firebase projects you’ve worked on
•⁠ ⁠Your experience with Next.js & Node.js
•⁠ ⁠Your estimated time for completing this task

Skills: Node.js, React, JavaScript, AngularJS, Firebase, ExpressJS, TypeScript, API Development, RESTful API, Next.js

Good afternoon I currently have a website that has some issues I need corrected. Also would like to build a new additional website .

Skills: React, HTML5, Web Application, CSS, React Bootstrap, Node.js, Jasmine, ExpressJS, Front-End Development, Webware, Full-Stack Development, Back-End Development, PostgreSQL

LOOKING FOR ERITREAN BACKEND DEV

We built a pretty good MVP habeshawork.com

Now i want us to make it more performant and scalable. It's obviously for Habesha People and I have a wonderfully diverse Team but don't have an Eritrean Developer so want to add one.

Skills: PostgreSQL, Node.js, ExpressJS, Firebase

We created a website using MERN, however, since this is our first project and we are students, we need a professional to review our code and offer advice on how to make it better. and optimised. And improve if there are any performance issues

Skills: React, ExpressJS, MongoDB, JavaScript, Web Development, NodeJS Framework

Design, develop, and implement seamless integration of ChatGPT into the company’s website.
Optimise the performance and responsiveness of the ChatGPT model to ensure a smooth user experience.
Customize and fine-tune the ChatGPT model to align with company-specific needs and industry standards.
Troubleshoot and resolve any issues related to the integration and functionality of ChatGPT. Regular checks to maintain chat gpt performance.

Skills: Python, Flask, API Development, Amazon S3, Amazon ECS, MongoDB, Node.js, Django, TypeScript, Golang, DevOps Engineering, CI/CD, Terraform, Azure DevOps, AWS Lambda, ExpressJS, React

Looking for a Shopify Developer to integrate my wholesalers API into my Shopify site for automating products, orders, and order tracking. I have between 3,000-5,000 products currently updated through FTP feed with SyncX, and just recently the wholesaler has enabled access for their API. They're saying that orders and tracking are also able to be automated.

Timeline: No critical deadline, but within two weeks if possible or after I return from vacation in mid-May.
Budget: Looking for quotes, I don't know how much it should cost. Can also pay by hour.

It is important that it can be safely implemented without erasing current products and pricing.

A few things that may be of interest from wholesaler. Can provide more information if required.

Developer SDK
If you are using one of the languages listed in the table below, we encourage you to use the supported library. There will be no need to interact with the REST API directly.

Language Documentation Version Download
C#(.NET) Read the Docs 1.1.0 Download SDK
JAVA Read the Docs 1.1.0 Download SDK
Python Read the Docs 1.1.0 Download SDK
PHP Read the Docs 1.1.0 Download SDK
Node.js Read the Docs 1.1.0 Download SDK

Skills: Shopify, JavaScript, React, Next.js, Node.js, Bootstrap, Stripe, TypeScript, Amazon Web Services, React Native, NestJS, Django, ExpressJS, GraphQL, Socket.io

ONLY APPLY IF YOU CAN FOLLOW INSTRUCTIONS

We are seeking a highly skilled and experienced Senior Full Stack Developer to join our growing agency on a long-term basis. This is an excellent opportunity to contribute to exciting projects, expand your technical expertise, and develop your personal skills within a collaborative and supportive team environment.

Responsibilities:
- Develop and maintain robust, scalable, and efficient web applications using ReactJS, NodeJS, TypeScript, and PostgreSQL.
- Write clean, well-documented, and maintainable code.
- Collaborate effectively with team members, including designers, project managers, and other developers.
- Participate in code reviews and contribute to improving development processes.
- Manage and utilize Git for version control.
- Follow instructions diligently and adhere to project specifications.
- Demonstrate strong ownership of assigned tasks and contribute to the overall success of the agency.
- Provide valuable insights and solutions to meet client needs.
- Communicate effectively with team members and clients in fluent English.

Requirements:
- Minimum 3 years of professional full stack development experience.
- Expert-level proficiency in ReactJS, NodeJS, TypeScript, and PostgreSQL.
- Strong understanding of front-end and back-end development principles.
- Experience with Git for version control.
- Excellent communication skills and fluent in English (written and verbal).
- Ability to work 30 hours per week in the Pacific Time (PT) timezone.
- Proven ability to follow instructions and adhere to project requirements.
- Strong teamwork and ownership skills.
- Ability to align with agency goals and provide value to clients.

We Offer:
- Long-term, stable employment with a growing agency.
- Opportunity for professional growth and skill development.
- Collaborative and supportive team environment.
- Exposure to diverse and challenging projects.

Next Steps:
- You will go through an interview process to verify your skills.
- You will go through a probation period before officially joining our agency.
- You need to add omelette pancake to the beginning of the proposals for your proposal to be considered.
- Interviews will be conducted through video calls, so you need to be comfortable with that.

We are looking for a dedicated and passionate developer who is eager to contribute to our team and help us achieve our goals. If you meet the requirements and are ready to take on a challenging and rewarding role, we encourage you to apply. We look forward to hearing from you!

Skills: React, Node.js, JavaScript, PostgreSQL, MongoDB, TypeScript, ExpressJS, API

We are looking for an experienced ReactJS Developer with strong Node.js backend development skills to build a responsive website for our business. This website should be optimized for both desktop and mobile devices, offering a seamless user experience.

Project Scope:
Frontend:

Develop a responsive and user-friendly website using ReactJS.

Implement dynamic content and interactive features that work seamlessly across all devices and screen sizes.

Ensure smooth integration of API calls and data handling from the backend.

Implement modern web development best practices for performance, accessibility, and SEO.

Backend:

Set up a Node.js backend to handle API requests, data management, and secure user authentication.

Create and manage RESTful APIs to handle user requests and serve data to the frontend.

Integrate with a database (MongoDB, PostgreSQL, or MySQL – specify your preferred option).

Ensure the backend is optimized for performance and scalability.

Additional Features:

User authentication and authorization (e.g., login, registration, role-based access).

Implement any necessary third-party integrations (e.g., payment gateways, APIs).

Testing and debugging to ensure the website is fully functional and free of bugs.

Skills & Requirements:
Proficient in ReactJS and Node.js.

Experience with frontend technologies like HTML5, CSS3, and JavaScript.

Strong understanding of responsive web design and mobile-first development.

Experience building and consuming RESTful APIs.

Knowledge of database management (e.g., MongoDB, PostgreSQL, MySQL).

Strong problem-solving and debugging skills.

Experience with version control (e.g., Git).

Familiarity with authentication methods such as JWT or OAuth.

Experience in deploying apps on cloud services like AWS, Heroku, or DigitalOcean is a plus.

Strong communication skills and ability to collaborate effectively.

Skills: React, Node.js, HTML5, API, ExpressJS, Web Application, Bootstrap

Scope of Work:
The developer will create a dashboard-style website with the following features:

1. User Authentication & Profile Page

Users can sign up and log in using their name, email, and password.
A simple dashboard displaying user details.
2. Mining Machine Page

A live animated mining machine that visually operates.
The machine should simulate mining and update the token balance in real-time.
A section below the machine displaying live token generation per second.
Design & UI Requirements:
Black-themed UI with a futuristic, minimal look.
Smooth, high-quality animations for the mining machine.
Simple, user-friendly dashboard experience.
Responsive design (mobile & desktop compatibility).
Technical Requirements:
Backend & frontend development for user authentication and real-time mining display.
Preferred stack: React, Next.js, Node.js, Python, or any suitable technology for a lightweight dashboard.
Secure user authentication and subscription handling.
Who We’re Looking For:
Experienced web developer with knowledge in crypto-related projects.
Strong expertise in frontend animations and smooth UI/UX design.
Ability to build a lightweight, high-performance website.

Skills: React Native, TypeScript, Javassist, Flutter, Dart, Mobile App, MongoDB, Node.js, ExpressJS, PostgreSQL, MySQL, Firebase, Google Map Maker, Google Maps

Scope of Work:
The developer will create a dashboard-style website with the following features:

1. User Authentication & Profile Page

Users can sign up and log in using their name, email, and password.
A simple dashboard displaying user details.
2. Mining Machine Page

A live animated mining machine that visually operates.
The machine should simulate mining and update the token balance in real-time.
A section below the machine displaying live token generation per second.
Design & UI Requirements:
Black-themed UI with a futuristic, minimal look.
Smooth, high-quality animations for the mining machine.
Simple, user-friendly dashboard experience.
Responsive design (mobile & desktop compatibility).
Technical Requirements:
Backend & frontend development for user authentication and real-time mining display.
Preferred stack: React, Next.js, Node.js, Python, or any suitable technology for a lightweight dashboard.
Secure user authentication and subscription handling.
Who We’re Looking For:
Experienced web developer with knowledge in crypto-related projects.
Strong expertise in frontend animations and smooth UI/UX design.
Ability to build a lightweight, high-performance website.

Skills: React Native, TypeScript, Javassist, Flutter, Dart, Mobile App, MongoDB, Node.js, ExpressJS, PostgreSQL, MySQL, Firebase, Google Map Maker, Google Maps

Scope of Work:
The developer will create a dashboard-style website with the following features:

1. User Authentication & Profile Page

Users can sign up and log in using their name, email, and password.
A simple dashboard displaying user details.
2. Mining Machine Page

A live animated mining machine that visually operates.
The machine should simulate mining and update the token balance in real-time.
A section below the machine displaying live token generation per second.
Design & UI Requirements:
Black-themed UI with a futuristic, minimal look.
Smooth, high-quality animations for the mining machine.
Simple, user-friendly dashboard experience.
Responsive design (mobile & desktop compatibility).
Technical Requirements:
Backend & frontend development for user authentication and real-time mining display.
Preferred stack: React, Next.js, Node.js, Python, or any suitable technology for a lightweight dashboard.
Secure user authentication and subscription handling.
Who We’re Looking For:
Experienced web developer with knowledge in crypto-related projects.
Strong expertise in frontend animations and smooth UI/UX design.
Ability to build a lightweight, high-performance website.

Skills: React Native, TypeScript, Javassist, Flutter, Dart, Mobile App, MongoDB, Node.js, ExpressJS, PostgreSQL, MySQL, Firebase, Google Map Maker, Google Maps

Looking for support building apollo email sequences for people displaying buyer intent for your services. Can you help?

Thanks,
Tom

Skills: PostgreSQL, JavaScript, Node.js, TypeScript, ExpressJS, Vue.js, React, GraphQL, NestJS, Redux, Auth0, Startup Company, Stripe, Database, Apollo.io

I need an expertise that can build me a discord mirror bot that can transfer stuff from one server to another server within seconds. If possible the images to be transfer and water marks removal with them. Please send me a message before hand please.So we are clear on the things. I can give you examples on what I mean also before hand on this project.Looking to hire ASAP.

Skills: Data Scraping, Python, Automation, JavaScript, Data Extraction, Web Development, React, Bot Development, ExpressJS, Front-End Development, Full-Stack Development, Web Crawler, Scripts & Utilities, Flutter, Cloud Computing

VPN Work project for android and ios platform. That app mus work in android and ios, working by suscriptions and ads

Skills: Mobile App, iOS Development, Android App Development, App Development, Web Development, Web Application, Flutter, Dart, JavaScript, Landing Page, NodeJS Framework, ExpressJS

Hello

Hello
The requirements are:

1) Text only posts
2) One photo and caption
3) Multiple photos and caption
4) One video and caption
5) Multiple videos and caption
6) If possible, mixed media (photos and videos) with caption
7) Any edit to the original caption will be reflected on fb.

Is it something that you can help me with?

Thank you

Skills: React, Node.js, ExpressJS, MongoDB, SQL, HTML, CSS, JavaScript, Git, TypeScript, Next.js, Tailwind CSS, Make.com, Zapier, Automation

We are currently working on an exciting test project utilizing React.js for the frontend and Node.js for the backend. The frontend is developed and ready for presentation. We are seeking an experienced backend developer who possesses a strong understanding of responsive web design and development.

Qualifications:
- Proven experience in backend development with Node.js.
- Strong knowledge of responsive web design principles.
- Familiarity with RESTful APIs and database management.
- Excellent problem-solving skills and attention to detail.

Looking forward to hearing from you and potentially working together on this project!

Skills: Node.js, React, Mongoose, DeFi, API Integration

A quick job demanding a devOps engineer skilled in setting up EC2 with Elastic Load Balancer and ACM

Interested developer will be guiding by communicating either via live shared screen on Google Meet or through writing here

The developer will also help in debugging any issues arise along the way such as diagnosing unhealthy instances that don't pass ALB health checks, and in reverse proxy nginx server refusing to connect to the upstream ExpressJS server

Skills: Amazon Web Services, Amazon EC2, DevOps

Task: Deploy Node/Express Web-App from GitHub


My project is currently hosted on GitHub, with branches for staging and production.

Requirements:

1. Configure separate staging and production environments - as from GitHub.
2. Set up a continuous deployment pipeline
3. Everything must be scalable with best practices. (Some overengineering might be ok :)

Skills: CI/CD, Docker, Node.js, ExpressJS, RESTful API, API, Amazon Web Services, Amazon EC2, GitHub, Docker Compose

Title: Build Snap Duel MVP – AI-Powered Photo Competition App (Budget: ₹2-3L, 2 Months)

Project Overview:
We are looking for a full-stack development team to build Snap Duel MVP, an AI-powered gamified photo competition app where users upload AI-enhanced photos, gain likes in real time, and win cash rewards. Our goal is to launch a fast, scalable, and cost-effective MVP in 2 months with a ₹2-3L INR budget.


---

Core Features:

User Features:

✅ AI-Generated Photos – Users can transform their selfies into preset AI styles (e.g., Kurta, Blazer, Casual, Ghibli, Vintage, Cyberpunk).
✅ Real-Time Like Battles – Users tap repeatedly to gain likes on uploaded photos.
✅ Two Game Modes:

Time-Based Like War: Highest likes within a set time wins.

Target Like Game: First users to hit the target likes win.
✅ Leaderboard System – Dynamic up/down ranking based on live likes.
✅ Instant Withdrawal System – Winners can withdraw prize money instantly.
✅ Entry via AI Photo Purchase – Users buy AI-generated images to enter contests.
✅ Social Share & Engagement – Users can share AI-enhanced photos to boost reach.



---

Admin Features:

✅ Manage AI Presets & Styles – Upload, train, and set pricing for AI transformations.
✅ Game Customization: Set time limits, target likes, and winner percentage distribution (like Dream11).
✅ User Moderation: Block users temporarily (1hr, 24hrs, permanently) if needed.
✅ Admin Participation: Admin can also upload AI photos to engage in competitions.
✅ Push Notifications – Notify users about contests, wins, and important updates.


---

Tech Stack (Preferred)

Frontend: Flutter (for fast cross-platform mobile development)

Backend: Node.js + Express

Database: Firebase (for real-time likes & ranking)

Real-Time Features: Socket.io (for instant like updates & leaderboards)

AI Processing: OpenAI DALL·E 3, Stable Diffusion, or RunwayML for AI transformations

Cloud Storage: Firebase Storage or Cloudflare for hosting user images

Payments: Razorpay or Stripe for AI photo purchase & instant withdrawals



---

Budget & Timeline:

💰 Budget: ₹2L – ₹3L INR (Fixed Price)
📅 Timeline: 60 days (2 months) max
📈 Milestones:

1. Week 1-2: UI/UX Design & AI Image Processing Setup


2. Week 3-4: Core Game Development (Like Tapping, Leaderboard, Real-Time Updates)


3. Week 5-6: Payment Integration & Withdrawals


4. Week 7-8: Testing, Optimization & Final Launch




---

Who We Are Looking For:

✔ Proven experience in AI-powered apps or gaming apps.
✔ Expertise in Flutter, Node.js, Firebase, and AI image generation.
✔ Ability to build real-time interactive experiences.
✔ Strong UI/UX skills for smooth user engagement.
✔ Understanding of scaling & performance for handling 10K+ users at launch.


---

How to Apply:

📩 Send us:

1. Portfolio of similar projects (AI, Gaming, Real-time apps).


2. Your approach to real-time ranking & AI integration.


3. Estimated timeline breakdown.


4. Tech stack confirmation & past experience with Firebase/Socket.io.



🚀 Looking forward to working with a talented & passionate team!

Skills: Node.js, ExpressJS, OpenAI API, Android, DALL-E 3, Figma, Flutter

I am looking for simple web interface with home page, user registration and login, simple dashboard and results page.

Skills: React, React Bootstrap, React Native, Redux Form, Redux Thunk, Node.js, ExpressJS, MongoDB, Firebase, HTML5, CSS 3, ECMAScript 6, JavaScript

If you have solid freelancing experience but are relatively new to Upwork, here’s your chance to join a team of developers working on various projects.

I need a few JavaScript expert developers who are familiar with the MERN stack, Next.js, and the Node.js ecosystem. You should be able to handle tasks independently with minimal input.

GitHub knowledge is crucial, as you’ll be working with other team members, pushing code for reviews, etc. Having a good understanding of PostgreSQL is a plus, but you should at least have basic knowledge of how database relationships work.

Experience with Puppeteer is also a plus, as we work on automation and web scraping, but it can be learned along the way if you’re flexible.

Looking forward to connecting with you! You will be interviewed.

Please apply only if you can dedicate time to this project. This is a starter project that will eventually become a full-time job.

Skills: JavaScript, Node.js, Next.js, TypeScript, MongoDB, PostgreSQL, API, ExpressJS, API Integration, Web Application

Jeg ser etter en med erfaring i Next.js/Node.js, MongoDB og Stripe, som kan vedlikeholde og videreutvikle en abonnementsbasert nettside på fast, løpende basis.
Er dette noe du har kompetanse på og ønsker å se nærmere på?

Nettsiden er allerede i drift, men jeg har en rekke endringer og oppgraderinger jeg ønsker å jobbe videre med fremover.

Steffen V.

Skills: React, JavaScript, TypeScript, Node.js, Next.js, ExpressJS, MongoDB, PostgreSQL, MySQL, HTML, SCSS, Three.js, React Native, GSAP, API

I am seeking a skilled MERN developer to assist with my personal project. The ideal candidate will have experience in building robust web applications using MongoDB, Express.js, React, and Node.js. You will be responsible for developing new features, optimizing performance, and ensuring seamless user experience. If you are passionate about coding and have a keen eye for detail, I would love to hear from you. Please provide examples of your previous work with MERN stack applications.

Skills: React, Node.js, JavaScript, ExpressJS, MongoDB