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Sam Baby

@sambaby

Flutter developer at NuCode Technologies who shipped Smuppy’s real-time social platform and built responsive mobile features.

Canada

Message

At NuCode Technologies, I directed a cross-functional team building Smuppy, a real-time fitness and wellbeing social platform for iOS and Android. I built its live-streaming, chat, and short-form post layers, integrating Pusher and Cloudflare WebSockets to preserve message state on spotty mobile networks.

At Bull Bitcoin, I built encrypted wallet backup and reworked wallet sync with Dart isolates to keep the app responsive during background work. I’ve also developed cross-platform Flutter plugins connecting native iOS and Android SDKs to Dart, and built a decentralized messaging client at Spidr.

Experience

Work history, roles, and key accomplishments

Team Lead (Flutter)

NuCode Technologies

May 2025 - May 2026 (1 year)

Directed a cross-functional remote engineering team to build and ship Smuppy, a real-time fitness and wellbeing social platform. Built live-streaming, real-time chat, and short-form post layers, and designed backend infrastructure with PostgreSQL and Supabase.

Flutter Dart BLoC SOLID Clean Architecture WebSockets Pusher Cloudflare Supabase PostgreSQL NestJS GitHub Actions CI CD Code Signing TestFlight

Flutter Developer

Bull Bitcoin

Jan 2025 - May 2025 (4 months)

Embedded with the Bull Bitcoin core team to ship production features for their non-custodial Bitcoin wallet. Built encrypted backup flows, reworked the sync engine with Dart isolates, and implemented real-time payment tracking for Boltz swaps.

Flutter Dart Dart Isolates Encryption Derivation Secure Data Storage Google Drive ICloud Bitcoin Boltz Swaps UI Migration

Rust & Flutter Plugin Developer

Bull Bitcoin

May 2022 - Jan 2025 (2 years 8 months)

Wrote and maintained a suite of cross-platform Flutter plugins to bridge native iOS/Android SDK cores into the Dart layer using flutter_rust_bridge and uniffi. Built the complete Flutter integration layer for multiple native SDKs and engineered CI/CD pipelines.

Flutter Dart Rust FFI Flutter Rust Bridge Uniffi iOS Android CI CD GitHub Actions Plugin Development

Flutter Developer

Spidr

Oct 2021 - Mar 2022 (5 months)

Migrated a social app to a decentralized protocol stack, removing Firebase dependencies. Wrote a custom real-time messaging client in pure Dart handling WebSocket relay management and encrypted messaging via MVVM/BLoC.

Flutter Dart WebSockets MVVM BLoC Encryption Unit Testing Integration Testing

Flutter Developer

Estatetial Inc

Oct 2020 - Feb 2021 (4 months)

Translated Figma designs into responsive Flutter code and established an SVG vector export pipeline. Integrated GraphQL schemas for file upload and retrieval workflows.

Flutter Dart Figma SVG GraphQL