I'm Tronciu Dumitru, a Senior Software Engineer with 6+ years of experience designing and delivering high-performance mobile and web applications across fintech, healthtech, e-commerce, and food-tech industries. I specialize in React Native and React, shipping production-grade products that serve 100,000+ end users.
My engineering practice is rooted in product engineering — I own features from first commit to App Store and Google Play release. I have deep hands-on experience in CI/CD automation, state management architecture, push notification infrastructure, design systems, and accessibility (a11y). I work equally well as a sole developer owning an entire product or as a collaborative team member in fast-paced, remote-friendly environments.
Alongside the mobile ecosystem, I bring a strong AI/ML mindset: integrating AI-powered flows into production apps, using AI-assisted development to accelerate delivery, and applying prompt engineering and LLM integration to build intelligent product features.
| Domain | Proficiency | Details |
|---|---|---|
| AI-Powered Product Features | Advanced | Designed and shipped AI-powered ordering flows and automated recommendation paths in production mobile apps (Omnia UAE). |
| AI-Assisted Development | Advanced | Leverage AI pair-programming across the full delivery lifecycle — architecture, codegen, testing, and code review — accelerating feature delivery by ~3x. |
| LLM / GenAI Integration | Building | Integrating large language models into real products; architecting prompt pipelines, context design, and RAG patterns for domain-specific assistants. |
| Prompt Engineering | Proficient | Systematic prompt design, output validation, and cost-latency trade-offs for production AI features. |
| Intelligent UX | Proficient | Designing AI-native UX — progressive disclosure, loading states, and graceful fallbacks for uncertain model output. |
Omnia — UAE · Globant (2025 — Present)
Enterprise health & lifestyle platform. Led state management architecture, delivery automation, and AI-powered ordering for a 10,000+ active user app with full accessibility compliance.
| Stack | Scale | Performance | Security | Impact | Repository |
|---|---|---|---|---|---|
| React Native, Redux Toolkit, RTK Query, Fastlane, FCM, GraphQL | 10,000+ active users | Deployment reduced 87.5% (~2h → <15 min) | Secure payments + deep-link app returns | ~3x faster feature delivery | Private · Corporate |
Built an end-to-end push notification infrastructure with deep-link navigation, integrated Meta Ads SDK and AI-powered ordering flows, and delivered an a11y-compliant app serving 10,000+ users. Created a 50+ component design system that accelerated delivery ~3x and cut QA turnaround by ~40% through a custom debugging toolkit.
CARSUP · Globant (2024)
Car marketplace mobile app. Owned the notification center, deep-linking, offline-first architecture, and TypeScript hardening across the codebase.
| Stack | Scale | Performance | Security | Impact | Repository |
|---|---|---|---|---|---|
| React Native, TypeScript, GraphQL, FCM, Redux | 1,000+ downloads (Google Play) | Perceived load -40% | Type-safe data layer | Runtime errors -60% | Private · Corporate |
Built a new notification center (1,000+ downloads), shipped loading skeletons across 30+ screens, migrated data fetching REST → GraphQL, strengthened TypeScript definitions (-60% runtime errors), and led the React Native major-version upgrade with full dependency-tree migration.
End-to-End Mobile Startup (2023 — 2024)
Full mobile product built from scratch as sole developer — 20 screens across 5 core user flows with maps, location features, and biometric auth.
| Stack | Scale | Performance | Security | Impact | Repository |
|---|---|---|---|---|---|
| React Native, Expo, Redux, Jest, RTL | 20 screens · 5 flows | Fast, native-feel interactions | Face ID / Touch ID auth | 100% component test coverage | Private · Startup |
Architected and developed the entire application end-to-end, integrating maps and location-based services, implementing biometric authentication (Face ID / Touch ID), and achieving 100% component test coverage with Jest and React Testing Library.
EasyPlan — Clinic Management Suite (2022 — 2023)
Full-stack platform managing internal processes for 20 dental clinics — ~500 staff users and ~5,000 appointments processed monthly.
| Stack | Scale | Performance | Security | Impact | Repository |
|---|---|---|---|---|---|
| React Native, React, WebSockets, i18n | 20 clinics · 500 staff | Real-time day/week/month views | Role-based access | Scheduling errors -25% | Private · Corporate |
Built cross-platform React Native (mobile) and React (web) applications, implemented a real-time calendar with WebSockets, added pause scheduling and day-off management (-25% scheduling errors), and shipped full Romanian/English localization.
Volt — Fintech App · Fin Tech Lab (2020 — 2021)
Fintech mobile app serving 100,000+ users. Redesigned 20 screens and built 20 new screens from scratch with secure authentication flows.
| Stack | Scale | Performance | Security | Impact | Repository |
|---|---|---|---|---|---|
| React Native, Reanimated, Redux | 100,000+ users | Micro-interactions & smooth transitions | Secure login/registration | 40 screens delivered | Private · Corporate |
Redesigned and shipped 40 screens, implemented secure authentication flows, and added Reanimated-based transitions and micro-interactions that lifted the perceived quality of the user experience.
Domain Marketplace — Opentech (2021 — 2022)
Web platform for buying and selling domains with 1,000+ active users. Built cart, wishlist, pre-order, and responsive layouts.
| Stack | Scale | Performance | Security | Impact | Repository |
|---|---|---|---|---|---|
| React, JavaScript, REST, Firebase | 1,000+ active users | Optimized filtering & sorting | Secure checkout flows | Higher purchase conversion | Private · Corporate |
Built the shopping cart and wishlist from scratch, developed pre-order domain capabilities with optimized filtering, designed responsive mobile/grid/list layouts, and integrated Firebase Analytics for data-driven product decisions.
GoParrot — Restaurant Ordering (2020)
Restaurant ordering platform serving 10,000+ users across multiple clients. Multi-flavor builds with custom branding per restaurant.
| Stack | Scale | Performance | Security | Impact | Repository |
|---|---|---|---|---|---|
| React Native, Multi-flavor builds | 10,000+ users · 5+ clients | Optimized map navigation | Per-client config | 5+ branded releases | Private · Corporate |
Built the ordering page from scratch, released multi-flavor builds for 5+ restaurant clients with custom branding, localization, and configuration, and maintained the map navigation screen for restaurant discoverability.
Chișinău, Moldova / UAE — Remote · Jun 2024 — Present
Engineering lead on enterprise mobile products for UAE clients. Architect state management, delivery automation, and AI-powered features at scale.
- Architected a scalable state management solution (Redux Toolkit + RTK Query) with automated data prefetching and advanced cache invalidation.
- Built a fully automated CI/CD pipeline with Fastlane (Staging & Production, Cloud Run), reducing deployment time by 87.5% (from ~2h to <15 min).
- Designed end-to-end push notifications (FCM) with deep-link navigation to specific in-app content.
- Integrated Meta Ads SDK, AI-powered ordering flows, and external payment systems with web-based checkout.
- Created a 50+ component design system, accelerating feature delivery ~3x with consistent UI.
- Delivered a fully a11y-compliant app serving 10,000+ active users; cut QA turnaround ~40% with a custom debugging toolkit.
- Developed custom native modules (Swift) for platform-specific deep integrations.
Remote · Sep 2023 — May 2024
Owned the entire mobile product — architecture, development, testing, and release readiness.
- Architected and built the full app from scratch — 20 screens across 5 core user flows.
- Integrated maps, location-based features, and biometric authentication (Face ID / Touch ID).
- Achieved 100% component test coverage using Jest and React Testing Library.
Remote · Mar 2022 — Jul 2023
Built a full-stack clinic management suite for 20 dental clinics (~500 staff, ~5,000 appointments/month).
- Developed cross-platform React Native (mobile) and React (web) applications — full stack in 12 months.
- Implemented a real-time calendar (WebSockets) with day/week/month views.
- Added pause scheduling and day-off management, reducing scheduling errors by ~25%.
- Shipped full Romanian/English localization (i18n) and maintained technical documentation in Confluence.
Remote · May 2021 — Mar 2022
Contributed to a web domain marketplace with 1,000+ active users.
- Built shopping cart and wishlist functionality from scratch, directly improving purchasing experience.
- Developed pre-order domain capabilities with optimized filtering and sorting.
- Designed responsive UI layouts for mobile, grid, and list views; integrated Firebase Analytics.
Remote · Oct 2020 — May 2021
Fintech mobile app serving 100,000+ users.
- Redesigned 20 screens and built 20 new screens from scratch.
- Implemented OTP-based secure authentication flows for login and registration.
- Added Reanimated transitions and micro-interactions for a more engaging experience.
Remote · Jun 2020 — Aug 2020
Restaurant ordering platform serving 10,000+ users across multiple clients.
- Built the ordering page from scratch with order injection flows.
- Released multi-flavor builds for 5+ restaurant clients with custom branding and configuration.
- Maintained and improved the map navigation screen for restaurant discoverability.
| Recognition | Details |
|---|---|
| Deployment Time -87.5% | Automated CI/CD with Fastlane cut release time from ~2 hours to under 15 minutes. |
| 100,000+ Users Served | Shipped production features for fintech apps serving 100k+ end users. |
| ~3x Faster Delivery | 50+ component design system accelerated feature delivery across enterprise teams. |
| 100% Test Coverage | Sole-developer product shipped with complete Jest + React Testing Library coverage. |
| -40% Perceived Load | Loading skeletons across 30+ screens eliminated blank states app-wide. |
| -60% Runtime Errors | TypeScript hardening across the CARSUP codebase improved maintainability. |
| 10,000+ a11y Users | Fully accessible, WCAG-aligned mobile app delivered to 10,000+ active users. |
learning:
- Advanced React Native Architecture & the New Architecture
- Swift & Kotlin Native Module Development
- LLM Integration & AI Product Engineering
building:
- AI-assisted product features with LLM APIs
- Scalable component design systems
- Automated mobile CI/CD with Fastlane & Cloud Run
exploring:
- Generative AI & RAG-based assistants
- GraphQL Federation & typed data layers
- Offline-first & edge computing patterns
open_to:
- Senior React Native / React Engineer
- Full-Stack & AI-Product Engineering roles
- Remote & international opportunities
"Engineer what you ship. Ship what you engineer."