Full Stack Application Developer

Koantek; Mesa (AZ); Hybrid; USD 83,000 - 131,000; Part time

Job summary

Koantek is actively seeking multiple experienced Full Stack Application Developers to design and build modern, production-ready applications and user experiences. You will work on SPAs and scalable backend services, with a focus on robust REST APIs and a PostgreSQL data layer.

The role emphasizes strong engineering fundamentals, action orientation, and clear communication, with leadership responsibilities and collaboration across data engineers, platform engineers, architects, and product

Qualifications

• Full-stack development experience.
• Backend APIs with FastAPI/Flask/Node.js.
• Relational database design and PostgreSQL proficiency.
• Ability to own features end-to-end.
• Strong collaboration with cross-functional teams.

Responsibilities

• Design, develop, and deploy SPAs using React or Angular.
• Build scalable backend services and REST APIs.
• Integrate with PostgreSQL databases.
• Collaborate with engineers and product stakeholders.
• Drive architecture decisions and ensure code quality.

Skills

Full-stack development

SPAs

REST APIs

Relational databases

React/Angular

Team collaboration

Tools

FastAPI

Flask

Node.js

React

Angular

PostgreSQL

Job description

Mesa, United States | Posted on 08/14/2026

Job Title: Full Stack Application Developer

Location: Remote-USA

Employment Type: Contract

Role Overview

Koantek is seeking multiple experienced Full Stack Application Developer to design and build modern, production-ready applications and user experiences. This role requires strong hands-on experience developing Single Page Applications (SPAs), building scalable backend services and APIs, and working with relational databases.

The ideal candidate combines strong application engineering fundamentals with a bias toward action, excellent communication skills, and technical leadership. Experience with Databricks Apps and the broader Databricks platform is highly desirable but not required.

Key Responsibilities

Front-End & Application Engineering

Design, develop, and deploy modern Single Page Applications (SPAs) using frameworks such as React, Angular, or similar technologies.

Develop scalable backend services and REST APIs using frameworks such as FastAPI, Flask, Node.js, or similar technologies.

Design and integrate applications with relational databases, with a strong emphasis on PostgreSQL.

Build end-to-end application functionality spanning front-end, backend, APIs, authentication, and data layers.

Architecture & Collaboration

Collaborate with data engineers, platform engineers, architects, product stakeholders, and customers to translate business requirements into working applications.

Develop applications and user experiences that integrate seamlessly with data and analytics platforms.

Drive technical decisions, produce clean, well-tested code, and contribute to engineering standards and best practices.

Take full ownership of deliverables, moving projects from initial concept through production deployment.

Must-Have Qualifications

Full-Stack Expertise: Strong professional experience in full-stack application development.

Backend & API Mastery: Hands-on experience building backend services and REST APIs using FastAPI, Flask, Node.js, or equivalent frameworks.

Database Experience: Strong experience with relational database design, queries, performance optimization, and integration (PostgreSQL preferred).

Modern Architecture: Solid understanding of modern web architecture, API integration, authentication, security, testing, and deployment practices.

Autonomy: Ability to independently take a feature or application from concept through production delivery.

Nice-to-Have Qualifications

Experience developing and deploying Databricks Apps or working with the Databricks Data Intelligence Platform.

Familiarity integrating applications with custom Databricks APIs, SQL Warehouses, Unity Catalog, Databricks SQL, Delta Lake, or Lakehouse architectures.

Experience building data-intensive or analytics-focused web applications.

Cloud application development experience with AWS, Azure, or GCP.