Freelance Full-Stack Web App Developer
Job Fit Check
Base Career helps you apply smarter for this job.
Key skills for this role
About the Role
Mindrift seeks a Freelance Full-Stack Web App Developer to build interactive browser-based applications using JavaScript/TypeScript and Python or Node.js. This part-time remote role involves collaborating with AI agents and requires 3+ years of full-stack experience.
Key Skills for This Role
Responsibilities
- Build interactive web applications with frontend (React, Next.js, Vue, or similar) and a backend API (Python/FastAPI/Flask or Node/Express)
- Design and implement data models, schemas, and persistence layers using SQL (PostgreSQL, SQLite) or NoSQL stores
- Implement authentication, sessions, and basic role based access where needed
- Integrate third party APIs and AI/LLM services (OpenAI, Anthropic, or similar) into product features
- Handle state management, user input validation, error states, and loading states cleanly
- Build standalone Python tools and scripts where required by the task (data processing, API clients, lightweight backend utilities)
- Evaluate AI generated full stack code and refactor it for correctness, security, performance, and maintainability
- Write clear, testable code and debug end to end issues across frontend, backend, and database
Requirements
- At least 3 years of relevant experience in full stack web development or shipping interactive web applications
- Strong command of JavaScript/TypeScript and at least one modern frontend framework (React, Next.js, Vue, Svelte, or similar)
- Solid backend experience in Python (FastAPI, Flask, Django) and/or Node.js (Express, NestJS)
- Hands on experience with relational databases (PostgreSQL, MySQL, SQLite) and basic schema design
- Experience implementing REST APIs, request validation, error handling, and authentication flows
- Familiarity with deployment platforms (Vercel, Netlify, Render, Fly.io, Railway, or similar)
- Comfortable with version control (Git) and basic testing practices
- Portfolio of shipped web applications
- English proficiency: Upper intermediate (B2) or above
Full Job Posting
About the Role
- Mindrift is looking for skilled Full Stack Web App Developers (JavaScript/TypeScript + Python or Node) to join the Tendem project and build interactive browser based applications within our hybrid AI + human environment.
- This part time remote opportunity is ideal for professionals with hands on experience in modern frontend frameworks, backend APIs, databases, and shipping interactive web products end to end.
Key Responsibilities
- Build interactive web applications with frontend (React, Next.js, Vue, or similar) and a backend API (Python/FastAPI/Flask or Node/Express).
- Design and implement data models, schemas, and persistence layers using SQL (PostgreSQL, SQLite) or NoSQL stores.
- Implement authentication, sessions, and basic role based access where needed.
- Integrate third party APIs and AI/LLM services (OpenAI, Anthropic, or similar) into product features.
- Handle state management, user input validation, error states, and loading states cleanly.
- Build standalone Python tools and scripts where required by the task (data processing, API clients, lightweight backend utilities).
- Evaluate AI generated full stack code and refactor it for correctness, security, performance, and maintainability.
- Write clear, testable code and debug end to end issues across frontend, backend, and database.
Requirements
- At least 3 years of relevant experience in full stack web development or shipping interactive web applications (required)
- Bachelor's or Master's Degree in Computer Science, Engineering, Information Technology, or related technical fields is a plus
- Strong command of JavaScript/TypeScript and at least one modern frontend framework (React, Next.js, Vue, Svelte, or similar)
- Solid backend experience in Python (FastAPI, Flask, Django) and/or Node.js (Express, NestJS)
- Hands on experience with relational databases (PostgreSQL, MySQL, SQLite) and basic schema design
- Experience implementing REST APIs, request validation, error handling, and authentication flows
- Familiarity with deployment platforms (Vercel, Netlify, Render, Fly.io, Railway, or similar)
- Experience integrating LLM APIs or other AI services into product features is a strong plus
- Comfortable with version control (Git) and basic testing practices
- Portfolio of shipped web applications (required)
- English proficiency: Upper intermediate (B2) or above (required)
Compensation
- Contributors can earn up to $60 per hour equivalent, depending on their level and pace of contribution.
Apply for this job in 1 click
Skip the repetitive application forms
Install the Base Career Chrome Extension and autofill job applications across major job boards with your profile.
Trusted by over 500,000 job seekers on Base Career
More from this employer
More jobs at Mindrift
Senior Python Engineer - AI Coding Agent Evaluation (Freelance)
Abu Dhabi, UAE
Mindrift is seeking a Senior Python Engineer to create challenging tasks and evaluation criteria for AI coding agents. You will build realistic developer environments, design tasks, and write tests to evaluate AI agent s
Senior Python Engineer - AI Coding Agent Evaluation (Freelance)
Doha, QAT
Mindrift is building a dataset to evaluate AI coding agents. You will create challenging tasks and evaluation criteria within simulated developer environments. Requires 8+ years in software development with Python, JavaS
Freelance Data Scraping Engineer (Python)
Doha, QAT
Mindrift is looking for a Python Data Scraping Engineer for a freelance role on the Tendem project. You will handle data scraping tasks, using tools like Apify and OpenRouter, and ensure data quality. Requires 3+ years o
Senior Python Data Scraping Engineer (Freelance)
Doha, QAT
Mindrift is seeking a Senior Python Data Scraping Engineer for a freelance role on the Tendem project. You will own end-to-end data extraction workflows, leveraging tools like Apify and OpenRouter, and ensure data qualit
Senior Python Data Scraping Engineer (Freelance)
Abu Dhabi, UAE
Mindrift is looking for a Senior Python Data Scraping Engineer for a freelance project. You will own end-to-end data extraction workflows across complex websites, ensuring accuracy and reliable delivery of structured dat
Freelance Agent Evaluation Engineer
Saudi Arabia, KSA
Evaluate AI coding agents by creating tasks, designing tests, and iterating based on feedback; requires proficiency in Python, JavaScript, and test writing.
Freelance Full-Stack Web App Developer
Saudi Arabia, KSA
Seeking a Freelance Full-Stack Web App Developer skilled in JavaScript/TypeScript, Python, and modern frameworks to build interactive applications and integrate AI services.
Freelance Mobile App Developer (iOS / Android)
Saudi Arabia, KSA
Seeking skilled Mobile App Developers to build native and cross-platform applications using React Native, Flutter, Swift, or Kotlin with strong attention to detail.
Senior Python Engineer - AI Coding Agent Evaluation (Freelance)
Abu Dhabi, UAE
Senior Python Engineer - AI Coding Agent Evaluation (Freelance)
Doha, QAT
Freelance Data Scraping Engineer (Python)
Doha, QAT
Senior Python Data Scraping Engineer (Freelance)
Doha, QAT
Senior Python Data Scraping Engineer (Freelance)
Abu Dhabi, UAE
Freelance Agent Evaluation Engineer
Saudi Arabia, KSA
Freelance Full-Stack Web App Developer
Saudi Arabia, KSA
Freelance Mobile App Developer (iOS / Android)
Saudi Arabia, KSA