Freelance Full-Stack Web App Developer
MindriftJob Description
Mindrift is looking for skilled Full-Stack Web App Developers (JavaScript/TypeScript + Python or Node) to join the Tendem project (https://tendem.ai/) and build interactive browser-based applications within our hybrid AI + human environment. In this role, as an AI Pilot – that's how we refer to this position at Mindrift – you'll collaborate with Tendem Agents that handle repetitive tasks, while you provide full-stack engineering expertise, architectural judgment, and quality control to ensure web apps are functional, robust, and ready for real users. 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.
What We Do
The Mindrift platform connects specialists with AI projects from major tech innovators. Our mission is to unlock the potential of Generative AI by tapping into real-world expertise from across the globe.
About the Role
This is a freelance role for a Tendem project. As a Full-Stack Web App Developer, you'll design, build, and refine browser-based applications with real logic, state, persistence, and user input — from habit trackers and budgeting tools to internal dashboards, mini-SaaS tools, and AI-powered apps. You may also work on standalone Python applications and data-processing scripts that sit alongside or behind these products.
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 and benefits
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
Candidates should have a strong foundation in full-stack web development, modern frontend frameworks, backend architecture, and building interactive browser-based applications end-to-end. We are looking for specialists who can confidently work across frontend, backend, databases, and APIs, design robust application logic, and refine AI-assisted output into production-ready products. Strong problem-solving skills, attention to detail, and the ability to independently architect and ship complete features are essential
- 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
- Strong attention to detail and commitment to building working, robust products — not demos.
- Self-directed work ethic with the ability to architect, build, and ship features independently
- Portfolio of shipped web applications (required)
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