Freelance Full-Stack Web App Developer

About Mindrift

Mindrift is a platform connecting 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 the Tendem project. As a Full-Stack Web App Developer (AI Pilot), you will design, build, and refine browser-based applications with real logic, state, persistence, and user input — ranging 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.

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 (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).
• Strong attention to detail and commitment to building working, robust products.
• Self-directed work ethic with the ability to architect, build, and ship features independently.
• Strong English communication skills.

Benefits

• Part-time remote flexibility.
• Work on cutting-edge AI projects with major tech innovators.
• Global collaboration with specialists across the world.
• Professional growth in AI-assisted software engineering.