Cross-platform Mobile Engineer
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.
Why this role exists:
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.
What you’ll drive:
Strategy & outcomes
— 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.
Discovery & decisions
— 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.
Delivery & execution
— 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.
Stakeholder & cross-team alignment
— Partner with Product Managers, Heads of Streams, and Team Leads to align technical roadmaps with product release schedules.
— Standardize CI/CD pipelines, release automation (fastlane), and store submission processes across all mobile teams.
— Align architectural patterns across cross-functional streams to prevent technical fragmentation.
People & technical leadership
— 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.
What makes you a GR8 fit:
Must-have
— 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.
Nice-to-have
— 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.
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.