Senior Frontend Developer - iGaming Platform

About the Role

We are looking for a Senior Frontend Developer remote to join our dynamic team at GR8 Tech. In this role, you will architect and deliver scalable, high-performance web interfaces that drive user engagement and shape our core product direction. You’ll be responsible for owning the frontend architecture, mentoring the engineering team, and championing UI/UX best practices from initial design all the way to deployment.

What You'll Do

• Architect scalable and maintainable front-end solutions using React, modern JavaScript, and TypeScript.
• Drive the adoption of efficient state management and modular build processes (e.g., Webpack, module federation).
• Design resilient, failure-tolerant systems that account for load, performance, and web security (CORS, CSP, OWASP).
• Ship complex, high-quality code to production in a timely manner to meet crucial business expectations.
• Optimize web pages for maximum speed and scalability by tuning the event loop and rendering steps (style, layout, paint, composite).
• Validate code reliability by building out comprehensive testing infrastructure (Jest, React Testing Library, unit/integration testing).
• Mentor junior developers and elevate team standards through thorough, constructive code reviews.
• Partner with Product Managers, Designers, and Delivery Managers to align technical execution with overarching business goals.
• Unblock the team by debugging deeply rooted technical issues and creating Proof of Concepts (POCs) for new technologies.

Requirements

• 5+ years in a senior frontend engineering role with a strong track record of shipping complex, user-facing web applications.
• Deep understanding of modern JavaScript (event loop, closures, async programming) and advanced TypeScript (generics, advanced types).
• Strong command of React core concepts, component lifecycle, rendering optimization, and modern state managers (Redux, Zustand, etc.).
• Expert knowledge of the browser rendering pipeline, DOM manipulation, semantic HTML5, and CSS preprocessors (Sass/Less).
• Proficiency in configuring build tools (Webpack) and writing comprehensive automated tests.
• The ability to clearly articulate complex architectural decisions and trade-offs to both technical and non-technical audiences.
• Upper-Intermediate+ English and fluent Ukrainian.

Nice to Have

• Familiarity with microservice/event-driven architectures and client-server communication (REST APIs, WebSockets).
• Experience with Cloud/DevOps practices (Docker, CI/CD pipelines, basic AWS/GCP/Azure knowledge).
• Basic understanding of backend database concepts (SQL/NoSQL) and broader system analysis.

What We Offer

• Annual cafeteria budget for Sports, Medical, Mental health, Home office, and Languages.
• Paid maternity/paternity leave + monthly childcare allowance.
• 20+ vacation days, unlimited sick leave, emergency time off.
• Remote-first work culture with tech support and coworking compensation.
• Team events (online/offline/offsite).
• Learning culture with internal courses and growth programs.

Our Culture & Core Values

At GR8 Tech, we believe in a culture of trust, ownership, and a growth mindset. We move fast, stay curious, and keep it real, with open feedback and room to experiment. Join us and be a part of our journey to empower operators in the competitive gaming landscape.