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Freelance Full-Stack Web App Developer

6 days, 14 hours ago
Mexico, Argentina, Brazil, Chile, Colombia, Peru
Freelance
Mid Level
Full-stack Engineer
Software Development
Django Express.js FastAPI Flask Fly.io Git JavaScript MySQL NestJS Netlify Next.js Node.js PostgreSQL Python Railway React Render REST API SQL SQLite Svelte TypeScript Vercel Vue.js
Apply Now
Mindrift.ai: Be the “I” in AI

Mindrift.ai: Be the “I” in AI

Join 10,000+ experts earning $15-50/hr training AI models remotely. Flexible freelance work, weekly payments. No AI experience required. Apply in 5 minutes.

Internet Software & Services
View All Jobs 65

Description

  • Build interactive web applications with a frontend framework and a backend API.
  • Design and implement data models, schemas, and persistence layers using SQL or NoSQL databases.
  • Implement authentication, sessions, and basic role-based access when needed.
  • Integrate third-party APIs and AI/LLM services into product features.
  • Manage state, user input validation, error states, and loading states.
  • Build standalone Python tools, scripts, and lightweight utilities as required.
  • Review AI-generated full-stack code and refactor it for correctness, security, performance, and maintainability.
  • Write clear, testable code and debug issues across the frontend, backend, and database.

Requirements

  • At least 3 years of relevant experience in full-stack web development or shipping interactive web applications.
  • Bachelor's or Master's degree in Computer Science, Engineering, Information Technology, or a related technical field is a plus.
  • Strong command of JavaScript/TypeScript and at least one modern frontend framework such as React, Next.js, Vue, or Svelte.
  • Solid backend experience in Python (FastAPI, Flask, Django) and/or Node.js (Express, NestJS).
  • Hands-on experience with relational databases such as PostgreSQL, MySQL, or SQLite, including basic schema design.
  • Experience implementing REST APIs, request validation, error handling, and authentication flows.
  • Familiarity with deployment platforms such as Vercel, Netlify, Render, Fly.io, Railway, or similar.
  • Experience integrating LLM APIs or other AI services into product features is a strong plus.
  • Comfort with Git and basic testing practices.
  • A portfolio of shipped web applications is required.
  • English proficiency at Upper-intermediate (B2) or above is required.
  • Self-directed work ethic with the ability to architect, build, and ship features independently.

Benefits

  • Fully remote work on your own schedule with just a laptop and stable internet connection.
  • Up to $30 per hour equivalent, depending on level and pace of contribution.
  • 10–20 hours per week during active project phases.
  • Performance-based bonus programs for high-quality work and consistent delivery.
  • Hands-on experience in a hybrid environment where human experts and AI agents collaborate.

Interested in this position?

Apply directly on the company website

Apply Now

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