Founding Engineer (Flutter)

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).

Proven track record as a Founding Engineer, with hands-on experience designing and architecting large-scale, high-load Enterprise applications from scratch

(beyond small-scale or multi-page apps).

Strong history of technical leadership, successfully driving complex mobile products through the full development lifecycle to production deployment.

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.

A verifiable portfolio of complex, production-grade applications, where you served as the Primary Architect or Tech Lead.

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.