System & Database Design
I plan the data model, API contracts and mobile/web screen flows on an architecture that scales.
I'm Şakir Ortataş. I build iOS and Android apps with React Native, fast websites with React & Next.js, and scalable backend systems with NestJS and Node.js.
I plan the data model, API contracts and mobile/web screen flows on an architecture that scales.
I write secure authentication, job queues, Redis caching and high-performance service layers.
From one TypeScript codebase I build iOS/Android apps with React Native and web interfaces with React & Next.js, all wired to the same API.
With load tests, performance tuning and Docker/CI-CD pipelines I ship the project to the App Store, Google Play and the cloud.
Native-speed iOS and Android apps from a single React Native codebase, with offline mode, push notifications, payments and device integrations, all the way to App Store and Google Play release.
Fast, SEO-friendly corporate websites, SaaS products and admin dashboards built with React and Next.js.
REST/GraphQL APIs, real-time WebSocket services, authentication and role management with NestJS and Node.js.
Data models, caching and queue layers with PostgreSQL, Redis and BullMQ, deployed with Docker and CI/CD.
Payment, maps and third-party integrations, plus refactoring and speed optimization of existing React/Node.js projects.
React Native, NestJS and microservice architecture
I use Claude and Claude Code every day to discuss architecture decisions, refactor large codebases, write tests and review code. Its long context and careful reasoning make it the tool I trust most.
Codebase-aware completions and inline edits speed up my day-to-day work on React Native, Next.js and NestJS projects.
A second opinion for current library versions, error messages and quick technical research.
I hand tests, migrations, documentation and repetitive chores to AI agents running in parallel, so my focus stays on architecture and product decisions.
Every project begins with a discovery call where I listen to your product goals, your audience and your technical requirements. Within 1-2 days I follow up with a detailed architecture plan, a technology recommendation and a transparent timeline.
On mobile I work with React Native (Expo/Bare), on the web with React and Next.js, and on the backend with NestJS and Node.js (TypeScript). For data and infrastructure I use PostgreSQL, Redis, Docker and cloud services.
As an end-to-end full-stack engineer I work across every layer with one shared language, TypeScript, and clean architecture principles. There is no gap between the interface and the backend; data models and API contracts are designed and integrated by the same hand.
We work with full transparency through weekly sprint demos, shared test builds (TestFlight / Android APK) and direct communication channels. At every stage you can see the live state of the system.
Yes. Once the project is done I help with App Store and Google Play release approvals, server deployment and performance monitoring, and, by agreement, ongoing technical maintenance and new feature development.
Moving from a monolithic backend to modular microservices: dependency injection, BullMQ queue management and fault-tolerant service design.
Building fluid mobile interfaces by relieving the JavaScript thread: the principles of Reanimated 3, Gesture Handler and TurboModules.
A multi-layer caching architecture that cuts database load by 80%: in-memory cache, Redis invalidation strategies and the Cache-Aside pattern.
Server Components, Client Components, Streaming SSR and Suspense: maximum speed on the web with a zero-JS client bundle.
React Native · React · Next.js · NestJS · Node.js