Founding Engineer, Flutter
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Job Description
Founding Flutter Engineer architecting high-performance mobile applications for GR8_TECH’s B2B iGaming platforms. Driving Flutter architecture, security, performance, and technical leadership across global teams.
Responsibilities:
- Own and drive frontend mobile architecture across flagship products
- Scale real-time user experiences to millions of active users through high-throughput, low-latency Flutter applications
- Define high-level mobile system architecture and patterns for stable, modular, and fast apps
- Translate business goals into technical blueprints and make system trade-off decisions
- Establish engineering benchmarks for startup times, memory footprint, and frame rates
- Evaluate mobile technologies, frameworks, and tools for complex scale problems
- Design and execute migration strategies, including native add-to-app integrations
- Define and enforce security baselines, including certificate pinning, obfuscation, and anti-tampering logic
- Contribute hands-on code to critical systems and core framework libraries
- Lead incident response and root-cause analysis for high-severity mobile production issues
- Optimize app performance by diagnosing UI/raster jank, memory leaks, and CPU-heavy operations using Dart Isolates
- Partner with Product Managers, Heads of Streams, and Team Leads on technical roadmaps and product release schedules
- Standardize CI/CD pipelines, fastlane release automation, and app store submission processes
- Align architectural patterns across cross-functional streams
- Mentor senior and mid-level engineers and conduct code reviews
- Support Team Leads with technical Personal Development Plans
- Drive engineering culture through technical write-ups, architecture reviews, and knowledge-sharing sessions
Requirements:
- 7+ years in commercial software development
- 3+ years dedicated to Flutter/Dart
- Hands-on experience in native iOS (Swift) or Android (Kotlin)
- Proven track record as a Founding Engineer
- Hands-on experience designing and architecting large-scale, high-load Enterprise applications from scratch
- Strong history of technical leadership driving complex mobile products through the full development lifecycle to production deployment
- Strong system design and architectural thinking
- Deep mastery of Dart internals, including isolates, async, and null safety
- Mastery of Flutter's rendering pipeline
- Understanding of state management with Bloc or Riverpod
- Experience with unit, widget, and integration testing
- Experience with monorepos using Melos
- Experience with high-frequency real-time data handling using WebSockets, long-lived connections, and protobuf/JSON serialization
- Knowledge of mobile security standards
- Effective technical communication across engineering and non-engineering stakeholders
- Experience guiding engineers through code reviews, technical roadmaps, and personal development planning
- Verifiable portfolio of complex, production-grade applications where the candidate served as Primary Architect or Tech Lead
- 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 using DevTools and Impeller engine
- Familiarity with App Store / Google Play review requirements for gambling and betting applications
Benefits:
- Benefits Cafeteria annual budget allocated to Sports, Medical, Mental health, Home office, and Languages
- Paid maternity/paternity leave
- Monthly childcare allowance
- 20+ vacation days
- Unlimited sick leave
- Emergency time off
- Remote-first work arrangement
- Tech support
- Coworking compensation
- Team events (online/offline/offsite)
- Internal courses
- Growth programs
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