FenosoaMobile Developer

CREATE.DELIVER.SCALEEVERYWHERE.

Idesignanddevelophigh-performancemobileapplicationsdeliveringaseamlessexperienceacrossallplatforms.FromconcepttotheAppStoreIshipproductspeoplelove.

Mobile AppsNative-feeling iOS & Android apps, performant and smooth
01
Web AppsPWA & responsive web applications with Next.js
02
PerformanceConstant 60fps, smooth animations, flawless UX
03
DeploymentAutomated CI/CD pipeline, stores & monitoring
04
FlutterReact NativeNext.jsTypeScriptDartFirebase
FlutterReact NativeNext.jsiOSAndroidWebDartTypeScriptFirebaseTailwindFigmaREST APIFlutterReact NativeNext.jsiOSAndroidWebDartTypeScriptFirebaseTailwindFigmaREST API
Impact in Numbers

RESULTS THAT
SPEAK FOR THEMSELVES

01
0+
Years of Experience
Since 2021
02
0
Applications Delivered
Mobile & Web
03
0K+
Cumulative Downloads
All apps combined
04
0fps
Performance Standard
No compromise
05
0+
Technologies Mastered
And counting
02 — About

THE ARCHITECT
BEHIND THE CODE

Fenosoa Rahermihaja
FR
Antananarivo, Madagascar
Available — Freelance & Remote
React NativeFlutterSwiftKotlinTypeScriptNext.jsNode.jsFirebase

I'm a cross-platform mobile architect passionate about creating performant and pixel-perfect app experiences — that feel native on every device.

My approach: treat the framework as a tool, never as a constraint. Choose the right technology for each challenge while maintaining a unified, testable and scalable codebase. From Figma mockup to production deployment — I manage the entire cycle.

Architecture first

Every technical decision stems from a clear system vision. No shortcuts.

Native performance

60fps, cold-start < 1s, optimized bundle — these aren't options, they're the standard.

Shared code

85–95% reuse across iOS, Android and Web. A single source of truth.

04 — Technical Ecosystem

MY
TOOLS

A set of proven technologies I use daily to deliver reliable and scalable applications.

FW
Frameworks & SDK
Flutter
React Native
Next.js
Expo
NestJS
LG
Languages
Dart
TypeScript
JavaScript
Swift
SD
State & Data
Provider
Redux
Zustand
Firebase
Supabase
DO
DevOps
GitHub Actions
Vercel
Docker
Fastlane
App Store
Play Console
TS
Testing
Jest
Flutter Test
Cypress
Detox
Postman
Maestro
UI
UI Systems
Figma
Tailwind CSS
Shadcn/UI
Material 3
Storybook
Framer Motion
AR
Architecture
Clean Architecture
MVVM
BLoC Pattern
SOLID
Design Patterns
Modularisation
MT
Methodology
Agile / Scrum
Code Review
TDD
CI/CD
Feature Flags
ADR
06 — Projects

SELECTED
PROJECTS

Each project is a complete solution shipped to production — from architecture to store deployment.

Complete mobile solution connecting temp agencies, companies and temporary workers in the French market.

Technical responsibilities
  • Cross-platform React Native mobile app (iOS & Android) with modular architecture and TypeScript
  • Next.js admin web interface for mission management, profiles and agency dashboards
  • Push notification system, geolocation, smart filters, rating system
  • Offline-first strategy with mutation queue and transparent synchronization
  • Expo EAS Build & Submit pipelines, OTA updates, Sentry monitoring
Key achievements
  • 40% reduction in matchmaking time
  • Clean Architecture (Presentation / Domain / Data) with MVVM, Zustand and React Query
  • App Store & Google Play deployment

Complete digitalization of the temp recruitment process, enabling agencies to manage missions in real-time and workers to find opportunities instantly.

React NativeNext.jsTypeScriptZustandReact QueryExpo EASFirebaseSentry
2+ years
05 — Methodology

MY
PROCESS

A proven methodology that transforms ideas into finished products — on time, every time.

01
DISCOVERY1–2 weeks

Understand the need

In-depth analysis of your users, business goals and technical constraints. Clear specifications prevent costly pivots down the road.

UX AuditRequirementsCompetitive analysisProject scoping
02
ARCHITECTURE1 week

Design the foundations

Structuring the codebase for scalability and maintainability. A solid architecture determines product longevity.

System designData modelsAPI designComponent structure
03
DEVELOPMENT4–12 weeks

Build the experience

Iterative feature-by-feature development with continuous testing. Each sprint brings the product closer to the final version.

Iterative sprintsCode reviewUnit testsCI/CD pipeline
04
HARDENING1–2 weeks

Test in real conditions

Testing on real devices with concrete user scenarios. Performance optimization and bug fixing before going to production.

E2E testsPerformance auditBug trackingUX review
05
LAUNCH1 day

Deploy on all platforms

Store publication with an automated and controlled process. Post-launch monitoring to ensure stability in production.

Store submissionMonitoringAnalyticsIterations
07 — Cross-Platform Reach

ONE
VISION.
EVERY SCREEN.

I design applications that feel native on every platform. Whether it's iOS, Android or the web — user experience always remains the priority.

01
Automated DeploymentsFrom pull request to production — CI/CD pipelines deploy to all platforms in a single merge.
02
Smooth PerformanceEvery interaction is optimized for 60fps. Performance is built in from the start, never patched afterward.
03
Maximum Code ReuseUp to 95% shared logic across platforms. Native UI where it matters, common foundation everywhere else.
9:41 AM
>_
DevOS — TERMINAL
Live Metrics
0%Crash-free rate
0fpsGuaranteed smoothness
0minDeploy pipeline
0K+Downloads
CONTACT
08 — Contact

LET'S WORK
TOGETHER
ON YOUR NEXT PROJECT.

Available for
Freelance ProjectsFull-time PositionsTechnical ConsultingOpen Source Collaboration

Whether you need a mobile app, a web platform or a complete digital product — I'm ready to bring your idea to life. Let's discuss your project.