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.
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.