Senior Frontend Developer for CRM Integrations Team

<div class="content-intro"><p data-renderer-start-pos="243"><strong data-renderer-mark="true"><span class="acronym-highlight">GR8</span> Tech builds B2B iGaming platforms for operators who play to lead.</strong></p>
<p data-renderer-start-pos="328">We deliver full-cycle, high-impact tech designed to scale — from seamless integrations and expert consulting to long-term operational support. Our platform powers millions of active players and drives real business growth. Call it what it is: the iGaming Platform for Champions.</p>
<p data-renderer-start-pos="608">With 1000+ GR8 people across locations and time zones, we don’t just ship technology — we help operators build success stories across brands, markets, and geos.</p>
<p data-renderer-start-pos="770"><strong data-renderer-mark="true">Our ambition drives us. Our people make it real.</strong></p>
<p data-renderer-start-pos="820">If you’re a challenger in spirit and a champion in action — join us.</p></div><h2><strong>Why this role exists:</strong></h2>
<p>This role exists to architect and deliver scalable, high-performance web interfaces. You’ll help us drive user engagement and shape our core product direction by owning the frontend architecture, mentoring the engineering team, and championing UI/UX best practices from initial design all the way to deployment.</p>
<h2><strong>What you’ll drive:</strong></h2>
<p><strong>Architecture &amp; Strategy</strong></p>
<ul>
<li>Architect scalable and maintainable front-end solutions using React, modern JavaScript, and TypeScript.</li>
<li>Drive the adoption of efficient state management and modular build processes (e.g., Webpack, module federation).</li>
<li>Design resilient, failure-tolerant systems that account for load, performance, and web security (CORS, CSP, OWASP).</li>
</ul>
<p><strong>Delivery &amp; Execution</strong></p>
<ul>
<li>Ship complex, high-quality code to production in a timely manner to meet crucial business expectations.</li>
<li>Optimize web pages for maximum speed and scalability by deeply tuning the event loop and rendering steps (style, layout, paint, composite).</li>
<li>Validate code reliability by building out comprehensive testing infrastructure (Jest, React Testing Library, unit/integration testing).</li>
</ul>
<p><strong>Team &amp; Leadership</strong></p>
<ul>
<li>Mentor junior developers and elevate team standards through thorough, constructive code reviews.</li>
<li>Partner with Product Managers, Designers, and Delivery Managers to align technical execution with overarching business goals.</li>
<li>Unblock the team by debugging deeply rooted technical issues and creating Proof of Concepts (POCs) for new technologies.</li>
</ul>
<h2><strong>What makes you a GR8 fit:</strong></h2>
<p><strong>Must-have</strong></p>
<ul>
<li><strong>5+ years</strong> in a senior frontend engineering role with a strong track record of shipping complex, user-facing web applications.</li>
<li><strong>Deep JS/TS Mastery:</strong> Deep understanding of modern JavaScript (event loop, closures, async programming) and advanced TypeScript (generics, advanced types).</li>
<li><strong>React Expertise:</strong> Strong command of React core concepts, component lifecycle, rendering optimization, and modern state managers (Redux, Zustand, etc.).</li>
<li><strong>Web Fundamentals:</strong> Expert knowledge of the browser rendering pipeline, DOM manipulation, semantic HTML5, and CSS preprocessors (Sass/Less).</li>
<li><strong>Tooling &amp; Testing:</strong> Proficiency in configuring build tools (Webpack) and writing comprehensive automated tests.</li>
<li><strong>Communication:</strong> The ability to clearly articulate complex architectural decisions and trade-offs to both technical and non-technical audiences.</li>
<li>Upper-Intermediate+ English and fluent Ukrainian.</li>
</ul>
<p><strong>Nice-to-have</strong></p>
<ul>
<li>Familiarity with microservice/event-driven architectures and client-server communication (REST APIs, WebSockets).</li>
<li>Experience with Cloud/DevOps practices (Docker, CI/CD pipelines, basic AWS/GCP/Azure knowledge).</li>
<li>Basic understanding of backend database concepts (SQL/NoSQL) and broader system analysis.</li>
</ul><div class="content-conclusion"><h2 data-renderer-start-pos="906"><strong data-renderer-mark="true">Why you’ll love working here:&nbsp;</strong></h2>
<p data-renderer-start-pos="958"><strong data-renderer-mark="true">Benefits Cafeteria</strong> — annual budget you allocate to:</p>
<p data-renderer-start-pos="1011">Sports • Medical • Mental health • Home office • Languages.</p>
<p data-renderer-start-pos="1072"><strong data-renderer-mark="true">Work-life &amp; support</strong></p>
<ul>
<li data-renderer-start-pos="1095">Paid maternity/paternity leave + monthly childcare allowance.</li>
<li data-renderer-start-pos="1160">20+ vacation days, unlimited sick leave, emergency time off.</li>
<li data-renderer-start-pos="1224">Remote-first + tech support + coworking compensation.</li>
<li data-renderer-start-pos="1281">Team events (online/offline/offsite).</li>
<li data-renderer-start-pos="1322">Learning culture with internal courses + growth programs.</li>
</ul>
<h2 data-renderer-start-pos="1383"><strong data-renderer-mark="true">Our culture &amp; core values:</strong></h2>
<p data-renderer-start-pos="1411">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.</p>
<p data-renderer-start-pos="1612"><strong data-renderer-mark="true">FUELLED BY TRUST</strong>: we’re open, honest, and have each other’s backs.</p>
<p data-renderer-start-pos="1680"><strong data-renderer-mark="true">OWN YOUR GAME</strong>: we take initiative and own what we do.</p>
<p data-renderer-start-pos="1735"><strong data-renderer-mark="true">ACCELER8</strong>: we move fast, focus smart, and keep it simple.</p>
<p data-renderer-start-pos="1793"><strong data-renderer-mark="true">CHALLENGE ACCEPTED</strong>: we grow through challenges and stay curious.</p>
<p data-renderer-start-pos="1859"><strong data-renderer-mark="true">BULLETPROOF</strong>: we’re resilient, ready, and always have a plan.</p></div>