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Freelance Full-Stack Web App Developer

2 hours, 59 minutes ago
Mexico, Argentina, Brazil, Chile, Peru, Colombia
Part-time
Mid Level
Full-stack Engineer
Software Development
Django Express.js FastAPI Flask Fly.io Git JavaScript LLM 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 58

Description

  • Build interactive web applications with a frontend and backend API.
  • Design and implement data models, schemas, and persistence layers using SQL or NoSQL databases.
  • Implement authentication, sessions, and basic role-based access where 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 and scripts for data processing and backend utilities.
  • Evaluate AI-generated full-stack code and refactor it for correctness, security, performance, and maintainability.
  • Write testable code and debug issues across the frontend, backend, and database.
  • Collaborate in a hybrid environment where Tendem Agents handle repetitive tasks and you provide engineering judgment and quality control.

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 with FastAPI, Flask, or Django, and/or Node.js with Express or NestJS.
  • Hands-on experience with relational databases such as PostgreSQL, MySQL, or SQLite, plus 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, or Railway.
  • 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 is required.
  • English proficiency at upper-intermediate (B2) or above is required.
  • Strong problem-solving skills, attention to detail, and the ability to independently architect and ship complete features.

Benefits

  • Fully remote work on your own schedule.
  • Part-time workload of about 10–20 hours per week during active phases.
  • Compensation up to $30 per hour equivalent, depending on contribution level and pace.
  • Performance-based bonus programs for high-quality work and consistent delivery.
  • Opportunity to work in a hybrid human-AI environment with a distinctive skill set.

Interested in this position?

Apply directly on the company website

Apply Now

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