RemoteLeaf Logo
Log in Sign up

Freelance Full-Stack Web App Developer

3 days, 3 hours ago
United Kingdom, Austria, Belgium, Germany, Ireland, Portugal
Part-time
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 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, API clients, and lightweight backend utilities.
  • 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.
  • Collaborate in a hybrid workflow 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.
  • A portfolio of shipped web applications is required.
  • 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 and 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.
  • English proficiency at upper-intermediate (B2) or above.
  • Bachelor's or Master's degree in Computer Science, Engineering, Information Technology, or a related technical field is a plus.

Benefits

  • Fully remote work on your own schedule.
  • Part-time workload of around 10–20 hours per week during active phases.
  • Compensation of up to $60 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 on a distinctive project.
  • Access to project work through Mindrift’s platform with major tech innovators.

Interested in this position?

Apply directly on the company website

Apply Now

Similar Roles

Vecten

AI App Engineer (FastAPI / React / EKS)

Vecten Internet Software & Services

AI App Engineer role at a Warsaw-based AI-native data and technology partner for private capital and healthcare, focused on taking internal AI applications from working prototypes to secure, production-ready systems on AWS EKS.

Poland Europe Full-time Mid Level AI Engineer Full-stack Engineer
AWS FastAPI JavaScript Kubernetes OWASP Python React Terraform
3 hours, 12 minutes ago
SPD Technology

Senior Full Stack Engineer (Java, SSR)

SPD Technology Internet Software & Services

SPD Technology is hiring a Senior Full Stack Engineer to help migrate PitchBook’s editorial and research content platform from a custom CMS to Brightspot while building integrations and UI modules for a distributed product team.

Poland Romania Bulgaria Spain Ukraine Full-time Senior Full-stack Engineer
Agile AWS Confluence CSS Docker GitHub GitLab Grafana GraphQL HTML Java JavaScript JIRA Kafka Kubernetes Microservices OpenAPI PostgreSQL React Redis Scrum SEO Spring Boot SQL Server
3 hours, 12 minutes ago
Resilient Co

Ssr. Fullstack Engineer

Resilient Co 11-50 Professional Services

Resilient Co. is hiring a semi-senior Fullstack Engineer in Argentina or Brazil to build AI-driven full-stack solutions for enterprise workflows, with a focus on agentic AI, machine learning, backend services, and cloud integration.

Argentina Brazil Contract Senior Full-stack Engineer Machine Learning Engineer
Angular Azure C# CI/CD Django Docker Entity Framework FastAPI Flask Git JavaScript Microservices .NET NumPy Pandas Python RabbitMQ React Scikit-learn Terraform Vue.js YAML
3 hours, 27 minutes ago
AJ Media

Senior Checkout Champ Developer

AJ Media Media

AJ Media is hiring a senior technical lead to own Checkout Champ and Shopify funnel architecture across multiple consumer brands, with the main objective of improving conversion performance and revenue through end-to-end technical execution.

Anywhere Full-time Senior Full-stack Engineer
CSS HTML JavaScript Shopify
3 hours, 27 minutes ago

You're on a roll! Sign up now to keep applying.

Sign Up

Already have an account? Log in

Used by 14,729+ remote workers