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Available for Senior Mobile Engineering Roles · Remote (Canada / Europe)

Senior Mobile Engineer

Flutter, React Native & Mobile Architecture

5+ years building production mobile apps in Flutter and React Native - from fintech platforms to AI-powered products - for teams across Canada, Europe, Australia and Africa.

Oladapo D. Olatubosun

ABOUT

Cross-Platform Mobile, Built for Production

Over five years shipping production mobile apps, I've worked across the full lifecycle - architecture, API design, release management, and the operational realities of software real users depend on. Flutter is where I have the deepest production depth; React Native is a growing part of how I build cross-platform, and I reach for native Swift when a platform requirement demands it.

That production depth was built inside regulated fintech - cross-border payments, wallet infrastructure, open banking - where security-conscious design, predictable state management, and operational observability aren't optional. That discipline now extends to two React Native products I'm building on my own time - see Currently Building below.

I work remotely with distributed teams across Canada, the UK, Europe, Australia, and Africa. I take ownership of production systems, not just features - rollout strategy, incident response, and what happens when a third-party dependency degrades at 2am, whatever the domain.

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Years building production mobile apps

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Projects built

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Regions - Canada, Europe, Australia, Africa

CASE STUDIES

Selected Work

Production mobile apps across Flutter, React Native, and AI-powered products.

01 -

Voye

Building a production-reliable Flutter transfer experience across multiple payment partners and regions with different compliance constraints - while keeping transaction states observable and user recovery paths predictable.

FlutterMobile ArchitectureCross-border payments

Live on App Store and Play Store. Handles multi-currency transfers with transparent payout status across international corridors.

View Case Study
Voye screenshot

02 -

Packy AI

Combining AI-generated travel recommendations with deterministic user controls - keeping suggestions explainable and latency low even when model confidence varied.

FlutterAI-Powered ProductsMobile Performance

Live on App Store and Play Store. Delivers personalized travel itineraries with fallback reliability across varying model output quality.

View Case Study
Packy AI screenshot

03 -

Monimoore

Maintaining consistent portfolio state and balance accuracy under high-frequency market data updates, while meeting open banking compliance requirements for account connectivity.

FlutterReal-time DataWealth fintech

Deployed to production. Serves investment portfolio visibility and account management across European and African markets.

View Case Study
Monimoore screenshot

04 -

Kunda Kids

Delivering media-rich, interactive reading sessions with consistent performance across low-end devices and variable connectivity - with child-safe, guardian-managed access controls.

FlutterMobile PerformanceContent Delivery

Available on App Store and Play Store. Operates across diverse device specs with offline-tolerant progress continuity.

View Case Study
Kunda Kids screenshot

CURRENTLY BUILDING

Building in Public

Two products I'm building outside client work - proof React Native is a working skill, not a resume line.

SnapGrocer

A complete cross-platform grocery-list app, built solo from scratch - Clerk for authentication, Neon Postgres with Drizzle ORM for the database, NativeWind for styling. Still shipping.

React NativeExpoClerkNeon PostgresDrizzle ORMNativeWind
In DevelopmentView Repo

FoundryHQ

A unified operating system for startups - tracking customers, shipping product, running meetings, and measuring what matters from day zero to Series B. Web in React, mobile in React Native, backend in Go.

React NativeReactGo
In DevelopmentView Repo

CAPABILITIES

Technical Depth

Domain expertise built through production delivery across mobile, AI, and platform systems.

Mobile Engineering

FlutterReact NativeExpoDartNativeWindClean ArchitectureRiverpodBlocGetXMVVMMVCOffline-first design

Architecture

Domain-driven module designBounded contextsEvent-driven refreshAPI contract designIdempotent retry handling

AI-Powered Products

Prompt engineeringAI output normalizationDeterministic client orchestrationLLM backend integration

Full-Stack & Backend

Next.jsTypeScriptReactFirebaseClerkNeon PostgresDrizzle ORMGo

API / Integrations

REST APIsMixpanelSentryCrashlyticsGitHub ActionsAzure DevOps

Security

SSL pinningCode obfuscationJailbreak and root detectionSecure authenticationSession lifecycle managementAudit event design

EXPERIENCE

Where I've Built

Senior Mobile Engineer

Cede · Voye App · Remote - Canada & UK

ActiveJul 2025 – Present
  • Own mobile architecture for a cross-platform Flutter app handling wallet and cross-border transfer flows, improving release predictability across high-traffic journeys.
  • Defined bounded modules and typed API contracts that reduced integration regressions and simplified domain ownership across the mobile codebase.
  • Led production readiness through CI/CD quality gates, controlled rollout strategy, and operational monitoring coverage.
  • Implement secure session handling and auditable user action trails - including KYC and transaction-monitoring controls in this fintech context.

Mobile Engineer

Monimoore · Remote - Europe & Africa

Mar 2024 – Jul 2025
  • Built and owned Flutter account-onboarding and connectivity flows end-to-end, with full ownership of production runtime behaviour.
  • Designed consent and account-linking UX patterns for this open-banking (PSD2-style) product.
  • Standardized state transitions and dependency fallback paths, reducing failure impact from third-party APIs.
  • Applied role-based access controls, transport security enforcement, and traceable audit events for sensitive actions.

Mobile Engineer

Dufuna · Remote - International

Feb 2022 – Mar 2024
  • Built maintainable Flutter foundations for content-rich and transactional products used across distributed teams.
  • Introduced feature-based module boundaries and API error normalization for more predictable UX recovery paths.
  • Raised engineering delivery standards through code review practices, test coverage expectations, and release readiness checks.
  • Improved security posture with hardened environment configuration, secure local data defaults, and dependency risk reviews.

Education

Obafemi Awolowo University, Ile-Ife, Nigeria

B.Sc. Electronic and Electrical Engineering

January 2022

WRITING

Mobile Engineering Writing

Occasional writing on Flutter, mobile architecture, and engineering practice.

Accessibility: Making Your Flutter App Welcoming in Nigeria

How to build inclusive Flutter apps for Nigerian users - semantic labels, high contrast, and practical accessibility testing techniques that go beyond generic global guides.

FlutterAccessibilityMobile

December 2024

PRESS

Recognition & Features

Media coverage and features from across the industry.

Tribune Online

Oladapo Daniel Olatubosun Honoured as the 200th Global Tech Hero

Recognised among a global cohort of engineers and innovators making meaningful impact through technology.

CONTACT

Work Together

Available for senior mobile engineering roles across Canada and Europe. You can also reach me directly at odapo138@gmail.com