Senior Front End Developer

About the role

This Senior Front End Developer position at GR8 Tech focuses on building and enhancing scalable software for the iGaming industry. The role requires designing and implementing robust architectures, writing and testing complex code, and ensuring timely delivery of features. You will be instrumental in driving software reliability and performance across applications that serve millions of players.

Beyond coding, this role involves significant leadership and collaboration. You will provide guidance and mentorship to junior engineers, conduct thorough code reviews to maintain quality and best practices, and manage development projects. Effective communication with cross-functional teams and stakeholders is key to aligning technical solutions with business objectives.

A critical aspect of this role is improving engineering processes and quality assurance. You will create technical documentation, research and implement new technologies to boost performance, and resolve complex technical challenges. Developing and enforcing testing protocols will be essential to ensure software reliability and drive continuous improvement in development practices.

Skills that matter here

• React: You will use React to build and maintain the user interfaces of GR8 Tech's iGaming platforms.
• TypeScript: You will write and maintain code using TypeScript, ensuring type safety and improving code quality for complex applications.
• microfrontend architectures: You will design and implement solutions leveraging microfrontend architectures, including Webpack Module Federation, to create scalable and modular applications.
• REST APIs: You will integrate front-end applications with back-end services through REST APIs, understanding client-server architecture.
• Webpack Module Federation: You will apply Webpack Module Federation patterns for dynamic remote loading and shared dependency management in microfrontend setups.
• web performance metrics: You will analyze and optimize web performance using metrics like Core Web Vitals to ensure fast and responsive user experiences.

Who this role suits

• A person who thrives on both technical depth and mentorship, eager to guide junior engineers while tackling complex architectural challenges.
• Someone who is proactive in identifying and resolving technical issues, constantly seeking ways to improve software performance and development processes.
• An individual who values clear communication and collaboration, capable of explaining technical concepts to both engineers and non-technical stakeholders.
• A developer with a strong focus on quality and reliability, committed to thorough testing and documentation practices.

From the employer

What you’ll drive:

• Architecture and development: Designing and implementing scalable and efficient software architectures.
• Writing, testing, and debugging complex code for new and existing software applications.
• Delivering code to production in a timely manner according to business expectations.
• Leadership and collaboration: Providing guidance and mentoring to junior engineers and team members.
• Conducting thorough code reviews to ensure code quality, security, and best practices.
• Managing software development projects, ensuring timely delivery and quality.
• Collaborating with cross-functional teams to design and align technical solutions that meet business objectives.
• Communicating effectively with stakeholders on technical concepts.
• Engineering processes and quality assurance: Creating and maintaining comprehensive technical documentation for software development and system design.
• Researching and implementing new technologies and methodologies to improve software performance and development processes.
• Identifying and resolving complex software issues and technical challenges.
• Developing and enforcing testing protocols to ensure software reliability and performance.
• Driving continuous improvement in software development practices and processes.

What makes you a GR8 fit:

• Minimum of 5 years of experience in a similar senior engineering role.
• Deep knowledge of JavaScript, TypeScript, React, HTML, CSS, state management libraries, build tools, package managers, and web testing frameworks.
• Experience with microfrontend architectures and Module Federation patterns (Webpack Module Federation, dynamic remote loading, shared dependency management).
• Ability to analyze code, debug complex issues, optimize performance, and develop proofs of concept (PoCs).
• Understanding of web performance metrics and browser performance optimization, including Core Web Vitals (LCP, INP, CLS), FCP, TTFB, TBT, Speed Index, Time to Interactive (TTI), bundle size, and JavaScript parsing and execution performance.
• Understanding of browser internals, SPAs and static websites, client-server architecture, REST APIs, SSR, web security, and UI/UX patterns.
• Effective communication skills with both technical and non-technical audiences.
• Upper-Intermediate English level.

Why you’ll love working here:

• Benefits: Cafeteria — annual budget you allocate to: Sports • Medical • Mental health • Home office • Languages.
• Work-life & support: Paid maternity/paternity leave + monthly childcare allowance.
• 20+ vacation days, unlimited sick leave, emergency time off.
• Remote-first + tech support + coworking compensation.
• Team events (online/offline/offsite).
• Learning culture with internal courses + growth programs.
• Our culture & core values: GR8_TECH culture is how we win — through trust, ownership, and a growth mindset. We move fast, stay curious, and keep it real, with open feedback, room to experiment, and a team that’s got your back. FUELLED BY TRUST: we’re open, honest, and have each other’s backs. OWN YOUR GAME: we take initiative and own what we do. ACCELER8: we move fast, focus smart, and keep it simple. CHALLENGE ACCEPTED: we grow through challenges and stay curious. BULLETPROOF: we’re resilient, ready, and always have a plan.