Skip to content
Ferhat Erciyes

Interfaces engineered to specification.

See the work
Get in touch

Available for senior frontend and founding-engineer roles

I build production mobile and web products with React Native, React and TypeScript, from the pixel down to the state and data layers. Currently shipping an AI-assisted app to 148 countries from İstanbul.

Selected work

Three products in production, each shown as its layers: interface, state, data.

  1. Founder, product and engineering · Jun 2024 — presentReact Native · Expo · TypeScript · Redux Toolkit
    PetCare CompanionLive on the App Store in 148 countries, with an AI advisor that reads each pet’s real records.
    Open
  2. Hybrid front-end developer, TAK EduTech · Apr 2025 — presentNext.js · React · TypeScript · Tailwind CSS
    E-Learning PlatformHigh-fidelity Figma designs shipped as typed, responsive modules with WebSocket collaboration.
    Open
  3. Front-end developer, MintyFi · Feb 2023 — Apr 2025React · TypeScript · Redux Toolkit · Mapbox
    Fleet Management DashboardSub-second position updates and smooth rendering of data-heavy views on low-end devices.
    Open

Parts list

  • Design-system components
  • Motion and interaction
  • Responsive composition
  • Accessibility
  • React Native and Expo
  • Native feel
  • Offline first
  • Maps and telemetry
  • Redux Toolkit and RTK Query
  • Supabase
  • Real time
  • Validation
  • Next.js
  • TypeScript
  • Performance
  • AI integration

AInterface engineering

  1. A-01Design-system componentsTyped, accessible component libraries from Figma to production, on web and native.E-Learning Platform: Figma to Tailwind, typed end to end.
  2. A-02Motion and interactionReveal, gesture and transition systems that respect reduced-motion preferences.PetCare: swipe-to-delete with haptics, a floating dock.
  3. A-03Responsive compositionCompositions designed per breakpoint instead of a desktop scaled down.This site: three compositions at 1440, 768 and 390.
  4. A-04AccessibilitySemantic HTML, keyboard paths, contrast that is checked rather than assumed.This site: native dialog navigation, 4.5:1 minimum text contrast.

BMobile

  1. B-01React Native and ExpoProduction iOS apps with Expo Router, EAS builds and App Store delivery.PetCare Companion: live in 148 countries.
  2. B-02Native feelHaptics, gesture thresholds, glass surfaces and locale-aware formatting.PetCare: floating glass dock, twenty-plus currencies formatted from the device locale.
  3. B-03Offline firstPersisted stores that keep every screen usable and reconcile when the network returns.PetCare: Redux Persist with RTK Query.
  4. B-04Maps and telemetryLive positions on Mapbox and Google Maps at fleet scale.Fleet dashboard: sub-second position updates.

CState and data

  1. C-01Redux Toolkit and RTK QueryNormalized stores, cached queries and throttled updates.Fleet: hundreds of moving markers without re-render storms.
  2. C-02SupabasePostgres, row-level security, Edge Functions and auth.PetCare: context-injected AI over Edge Functions.
  3. C-03Real timeWebSocket streams for collaboration and IoT telemetry.E-Learning: live collaboration. Fleet: IoT position stream.
  4. C-04ValidationZod at every boundary, with types inferred once from the schema.This site: content validated at build time.

DPlatform and delivery

  1. D-01Next.jsApp Router, Server Components, static generation and locale routing.This site: every route is static HTML.
  2. D-02TypeScriptStrict and end to end, from content schema to component props.This site: content types inferred from Zod schemas.
  3. D-03PerformanceTransform-only motion, server-rendered HTML and small bundles, measured rather than assumed.This site: 24 KB of CSS, meaningful HTML without JavaScript.
  4. D-04AI integrationLLM features grounded in real user data through context injection.PetCare: Gemini via Supabase Edge Functions.

Working notes

  1. State is a design material.

    How data moves decides how an interface feels. I design the store before I draw the screen.

  2. Ship the boring parts beautifully.

    Empty states, errors, offline and loading are the moments that decide whether people trust a product.

  3. Measure before polishing.

    Bundle size, rendering cost, contrast and motion are checked with numbers, not impressions.

  4. Native feel is a set of details.

    Haptics, gesture thresholds, timing curves and typography are what make software feel made for the device.

Revision history

  1. 03Apr 2025 — presentTAK EduTechHybrid front-end developerInteractive e-learning modules with real-time collaboration; Figma designs shipped as typed Tailwind components over REST and GraphQL.Next.js · React · TypeScript · Tailwind CSS · WebSocket · Zod
  2. 02Jun 2024 — presentPetCare CompanionFounder, product and engineeringAn AI-assisted pet health app built end to end and shipped to the App Store in 148 countries.React Native · Expo · Redux Toolkit · Supabase · Gemini API
  3. 01Feb 2023 — Apr 2025MintyFiHybrid front-end developerIoT fleet management with live GPS on Mapbox and Google Maps; data-heavy views restructured to run smoothly on low-end devices.React · TypeScript · Redux Toolkit · Mapbox · WebSocket

About

AboutFe
Subject · Ferhat Erciyes

I’m Ferhat, a frontend and creative developer in İstanbul, with three-plus years of building production mobile and web products with React, React Native and TypeScript.

I care about the whole stack of an interface: how state moves, how data arrives, and how motion and typography make it feel finished. The products I’ve shipped run in classrooms, in vehicle fleets and on the App Store in 148 countries.

Available for senior frontend roles, founding-engineer collaborations and high-craft client work through 2026.

Based
İstanbul · GMT+3
Languages
Turkish, English
Focus
React Native, React, TypeScript
Availability
2026

Sign-off

Direct line

feerciyes@gmail.com

Or leave a note below. I reply within a day.

Available for senior frontend and founding-engineer roles