Remote Full-Stack Developer: Build Modern Apps (Contract)

Worky; Arizona; On-site; USD 90,000 - 130,000; Full time

Job summary

Koantek is seeking a highly experienced Full Stack Application Developer to design and build modern, production-ready applications and user experiences. You will work on SPAs and scalable backend services, integrating with relational databases, particularly PostgreSQL.

The role emphasizes collaboration, ownership, and hands-on leadership in delivering end-to-end solutions across front-end, back-end, APIs, authentication, and data layers.

Qualifications

• Proven full-stack development experience in production systems.
• Experience building SPAs with React or Angular and TypeScript.
• Hands-on backend API development with FastAPI/Flask/Node.js.
• Relational databases design and optimization, PostgreSQL preferred.
• Ability to own features end-to-end from concept to production.

Responsibilities

• Design, develop, and deploy modern SPAs using frameworks like React or Angular.
• Build scalable backend services and REST APIs with FastAPI, Flask, or Node.js.
• Collaborate with data, platform engineers, and stakeholders to translate requirements.
• Own deliverables from concept through production deployment, with clean, tested code.

Skills

Full-Stack Expertise

Front-End Proficiency

Backend & API Mastery

Modern Web Architecture

Autonomy

Data-Driven Debugging

Tools

React

Angular

FastAPI

Flask

Node.js

PostgreSQL

TypeScript

Job description

Koantek is seeking a highly experienced Full Stack Application Developer to design and build modern, production-ready applications and user experiences. You will work on SPAs and scalable backend services, integrating with relational databases, particularly PostgreSQL.

The role emphasizes collaboration, ownership, and hands-on leadership in delivering end-to-end solutions across front-end, back-end, APIs, authentication, and data layers.