Flutter Tech Lead

GR8_TECH builds B2B iGaming platforms for operators who play to lead.

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.

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.

Our ambition drives us. Our people make it real.

If you're a challenger in spirit and a champion in action - join us.

This role exists to own and drive the frontend mobile architecture across our flagship products. You'll help us scale real-time user experiences to millions of active users by delivering high-throughput, low-latency Flutter applications while elevating engineering standards across our development teams.

• Own high-level mobile system architecture, defining patterns that keep our mobile apps stable, modular, and fast.
• Translate business goals into robust technical blueprints, making clear decisions on system trade-offs.
• Establish engineering benchmarks for app startup times, memory footprint, and frame rates.

• Evaluate new mobile technologies, frameworks, and tools to solve complex scale problems before they impact production.
• Design and execute migration strategies (including native add-to-app integrations) to modernize legacy codebases seamlessly.
• Define and enforce security baselines, including certificate pinning, obfuscation, and anti-tampering logic.

• Contribute hands-on code to critical, high-complexity systems and core framework libraries.
• Lead incident response and root-cause analysis for high-severity mobile production issues.
• Optimize app performance, diagnosing UI/raster jank, memory leaks, and CPU-heavy operations using Dart Isolates.

• Mentor senior and mid-level engineers, running code reviews that raise the overall quality bar.
• Support Team Leads in crafting technical Personal Development Plans (PDPs) for mobile engineers.
• Drive engineering culture through technical write-ups, architecture reviews, and internal knowledge-sharing sessions.

• 7+ years in commercial software development, with 3+ years dedicated to Flutter/Dart and hands-on experience in native iOS (Swift) or Android (Kotlin).
• Strong system design and architectural thinking, paired with deep mastery of Dart internals (isolates, async, null safety) and Flutter's rendering pipeline.
• Deep understanding of software engineering best practices, including state management (Bloc or Riverpod), testing (unit, widget, integration), and monorepos (Melos).
• Proven ability to balance technical quality vs delivery speed, taking full ownership and accountability for technical decisions and outcomes.
• Hands-on experience with high-frequency real-time data handling (WebSockets, long-lived connections, protobuf/JSON serialization) and mobile security standards.
• Effective technical communication skills across engineering and non-engineering stakeholders, with an ability to work smoothly in cross-functional environments (Product, Delivery, Ops).
• Mentorship and people development mindset, with experience guiding engineers through code reviews, technical roadmaps, and personal development planning.

• Hands-on experience with native add-to-app Flutter integration strategies and incremental migrations.
• Experience building CMS-driven or Server-Driven UI frameworks.
• Familiarity with dynamic localization, per-market feature toggles, deep linking at scale, and multi-jurisdictional app deployment.
• Practical experience profiling mobile app performance (DevTools, Impeller engine, jank diagnosis, memory leak isolation).
• Familiarity with App Store / Google Play review requirements for gambling and betting applications.

Benefits Cafeteria - annual budget you allocate to:

Sports • Medical • Mental health • Home office • Languages.

• 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.