Engineering Excellence
Senior-level expertise across React Native, Python backends, and production AI integration.
React Native Mastery
Production-grade mobile development from architecture to App Store
Architecture
Feature-based modules, clean separation, scalable folder structure
Native Modules
Custom bridges for device APIs, camera, biometrics, sensors
Performance
Hermes tuning, FlashList, render optimization, bundle reduction
Navigation
React Navigation v6+, deep linking, auth flows, tab/stack patterns
Animations
Reanimated 3, Skia, gesture handlers, 60fps interactions
Mobile Infrastructure
Backend integration and data layers that power production apps
Firebase
Auth, Firestore, Cloud Functions, Analytics, Crashlytics
GraphQL
Apollo Client, subscriptions, cache policies, optimistic updates
REST APIs
Axios, React Query, error handling, retry logic, pagination
WebSockets
Real-time chat, live updates, connection management
Push Notifications
FCM, APNs, deep link routing, campaign automation
Advanced Capabilities
Complex features that separate senior engineers from junior developers
Real-Time Systems
Chat, live tracking, collaborative features, presence
Offline Sync
MMKV, SQLite, conflict resolution, background sync
Maps & Location
GPS tracking, geofencing, route rendering, clustering
Payments
Stripe, in-app purchases, subscriptions, receipt validation
Background Processing
Task scheduling, location updates, silent push
Analytics
Event pipelines, funnel tracking, A/B testing, Sentry
Python & Backend
APIs and services that power mobile apps and AI workflows
FastAPI / Flask
REST APIs, auth, validation, async endpoints, OpenAPI docs
Database Design
PostgreSQL schemas, migrations, query optimization, Redis caching
Third-Party APIs
Stripe, Twilio, Firebase Admin, webhooks, retry logic
Real-Time Backends
WebSocket servers, pub/sub, event-driven architecture
Deployment
Docker, CI/CD, environment config, health checks
AI & LLM Integration
Production AI features embedded in mobile and web products
OpenAI APIs
GPT-4 / 4o, structured outputs, streaming responses
RAG Pipelines
Embeddings, vector search, pgvector, document chunking
Function Calling
Tool use, agent workflows, multi-step reasoning
Mobile AI UX
Streaming UI, optimistic updates, offline fallbacks
Prompt Engineering
System prompts, evaluation, cost and latency tuning
Need a senior engineer who masters the full mobile stack?
From mobile architecture to Python APIs and AI features — I bring production experience across the full stack.