KinaTrax is looking for a freelance Frontend Engineer to join our Data Engineering Team. You will design and build data-rich, highly interactive UI platforms used across the world of sport, translating complex data into clean, usable experiences with React and TypeScript.

What You'll Do

Design and build interactive UIs using React and TypeScript
Turn complex sports data into clean, usable experiences
Work closely with backend, design, and data teams to ship features
Scope, estimate, and manage your own tasks using Jira
Contribute to UI architecture, performance optimisation, and release workflows
Write clean, testable code with a focus on maintainability and clarity
Collaborate with Principal and Lead Engineers on frontend best practices
Scope and manage project tasks from requirements
Identify and manage dependencies within a project — across disciplines and external teams
Manage code releases across environments (Dev, Test, Staging, Prod)
Write high-quality code that is functional, maintainable, and easy for others to extend
Take pride in the detail and finish of the final product, and encourage the same from others
Communicate clearly and regularly to ensure the right solutions are being built
Continuously develop your own technical expertise and stay up to date with best practices
Share ideas, tools, and techniques to support the growth and knowledge of the wider team

What We're Looking For

Strong experience with TypeScript and React
Solid understanding of backend integration with APIs and websockets
Familiarity with Cypress or other automated testing frameworks
Proficient in HTML and CSS — with an eye for layout and detail
Confident with browser and device testing, including debugging workflows
Experience working with JSON data structures and consuming APIs (GET/POST)
Good command of responsive web design and web performance optimisation
Effective npm dependency management
Comfortable using Git for version control and clean code practices
Experience using Jira for task and ticket management

Nice to Have

Node.js / AWS experience or comfort working full-stack
Passion for sport, data visualisation, or interactive tech
Familiarity with performance profiling and Lighthouse
Experience working in broadcast, sports tech, or time-sensitive UI systems

Technical Stack

React, TypeScript, HTML, CSS
Cypress, Node.js, AWS
Git, Jira, npm

Team & Environment

You will be part of the Data Engineering Team, collaborating closely with backend, design, and data colleagues. This role reports to the Principal Frontend Engineer.

Work Mode

This is a remote freelance position open to candidates based in Hungary.

We’re committed to fostering a diverse and inclusive workplace. Everyone is welcome — regardless of background, gender, age, disability, or identity. Be your best and truest self here.