Oğuzhan Kalkuz

Senior Fullstack Engineer

Subtraid Inc · Canada · Remote

• Build a surety bond lifecycle platform — applications, riders, claims, renewals — serving contractors, brokers, and brokerages.
• Own the carrier bond-form mapping system (dynamic field configuration, validation, persistence) and the review-agent QA workflow.
• Ship full-stack across a ~670-component React 19 + Mantine + Tailwind frontend and an Express 5 + Prisma/MySQL backend.
• Accelerate delivery with AI-assisted development (Claude Code) integrated into the daily workflow.

React 19TypeScriptMantineExpressPrismaMySQL

Senior Fullstack Engineer

VUCOS · İstanbul · Remote

• Architect the .NET microservice platform of a multi-tenant OTT/IPTV service; authored 5 architecture decision documents (auth, licensing, service decomposition).
• Redesigned platform-wide error handling to RFC 7807, migrating 227 throw-sites across a 66-project codebase onto a central error catalog.
• Designed Redis-backed distributed session revocation and multi-provider OAuth (Google, Microsoft, Apple) for mobile, TV, and web clients.
• Led the .NET 6→10 and Central Package Management migration; contribute features to the Expo/React Native app (TV guide, navigation).

.NET 10ASP.NET CoreKafkaRedisEF CoreReact Native

Fullstack Engineer & Consultant

Enter Digit Yazılım · İstanbul

• Spearheaded DönerUI, a React component library: SVG chart system with 10+ visualizations and accessibility-compliant form controls.
• Built one-of-a-kind components (licence-plate input and more); cut boilerplate ~40% with utility hooks such as useTimeoutEffect.

ReactTypeScriptnpm

Game Developer

Roys Adventure · Türkiye

• Architected a data-driven RPG system handling 100+ monsters and 1,000+ items via Unity ScriptableObjects.
• Built cross-platform save/load (iOS/Android) on Firebase Realtime Database.
• Optimized sprite atlases and animation controllers, reducing memory usage ~25%.

UnityC#Firebase

Frontend Developer

English Home · İstanbul

• Designed a monorepo React component library with Tailwind, cutting UI development time ~30% across 6+ projects.
• Shipped internal web applications for retail process management; led Lighthouse audits to consistent 90+ scores.

ReactTailwindMonorepo

Fullstack Web Engineer

Evincadde · Türkiye

• Developed a WebGL real-estate viewer (Three.js + ArcGIS) enabling 3D property tours with realistic lighting and shadows.
• Created custom shader pipelines for large architectural models; integrated real-time streams for live property metrics.

Three.jsWebGLArcGIS

Fullstack Engineer & Consultant

Hedef Holding · İstanbul

• Delivered a Jira-integrated car-rental platform with dynamic availability-based pricing and a full admin panel.
• Automated Jira workflows for 5+ subsidiaries, halving ticket resolution time.

ReactJira

Frontend Developer

Hooplab.co · Canada · Remote

• Built a basketball team-management and math-testing platform for Canadian high schools (React, Material-UI, SASS).
• Integrated an interactive Desmos calculator; created 10+ reusable components, cutting feature development time ~35%.

ReactMaterial-UISASS

Software Engineer

Anayurt Teknoloji · İstanbul

• Scaled a WebRTC video-conferencing app to 50+ concurrent users with Redis-backed session management.
• Developed a real-time drone tracker: Cesium.js geofencing and WebSocket telemetry at ~10ms latency.
• Built IoT middleware for offline data sync handling 10K+ daily transactions.

WebRTCRedisCesium.js

Game Developer

Gulliver's Games · İstanbul

• Revamped Idle Tycoon mechanics; async resource loading cut startup time ~70%; URP shaders raised visual fidelity.
• Automated Google Sheets → JSON content pipelines (−90% manual updates); optimized CI/CD, saving ~$1.2K/month in cloud costs.

UnityC#URP

M.A. Strategic Brand Management

Marmara Üniversitesi

B.Sc. Software Engineering

Bahçeşehir Üniversitesi · Double major · 3.5/4.0

B.Sc. Civil Engineering

Bahçeşehir Üniversitesi · Double major · 3.5/4.0