Tarkan Mansuroglu

Modern payments platform routing transactions across processors, managing subscriptions, and building checkout experiences.

• 01
  One-Person Product Execution: Operated as an autonomous one-person product team spanning PM, UI/UX design, full-stack development, and QA to deliver C-level product initiatives.
• 02
  Production MCP Infrastructure: Built internal and public Model Context Protocol (MCP) servers(opens in new tab) securely connecting AI assistants to payment orchestration APIs and CRM data, enforcing runtime Zod schema validation over JSON-RPC 2.0.
• 03
  Spec-Driven & Test-Driven Verification: Paired Spec-Driven Development (SDD) with Test-Driven Development (TDD) to ensure AI agents build against concrete specifications and failing test suites, eliminating agent drift and preventing regressions.
• 04
  Parallel Multi-Agent Orchestration: Orchestrated concurrent agent environments to execute parallel workstreams across architecture, implementation, and QA.
• 05
  Scope & Review Guardrails: Enforced strict file boundaries to prevent agent hallucinations, and designed an automated review harness using isolated subagents to stress-test pull requests before merging.
• 06
  AI-Assisted Interface Delivery: Mapped complex CRM workflows into structured AI tools, and designed high-fidelity marketing pages and checkout flows using AI-assisted design workflows (Figma Make, Claude Design).

Digital food ordering and delivery ecosystem operating Tıkla Gelsin and fiyuu (5,000+ couriers) for major restaurant brands including Burger King, Subway, and Popeyes.

• 01
  Micro-Frontend Architecture: Optimized an Nx monorepo of 13 federated micro-frontends (130+ pages), cutting load times by up to 30% through bundle optimization and reducing CI/CD build times by 50% via computation caching.
• 02
  80% Fewer Re-renders: Decoupled active order forms from real-time data tables, eliminating interface lag during high-volume lunch and dinner order surges.
• 03
  Map-Based Dynamic Pricing: Designed an interactive map-based pricing system for delivery zone definition and region-specific pricing.
• 04
  Virtualized Order Tables & Filtering: Built high-performance fixed-header tables handling thousands of live orders, and coordinated 7 contributors over 3 months to architect the core filtering system.
• 05
  85% Test Coverage: Built unit and integration test suites using Jest, React Testing Library, and Mock Service Worker (MSW) contract mocks.
• 06
  Cross-Team & International Leadership: Bridged 10-person international and local teams over 12 months, operating across frontend, QA, and product responsibilities.

Global headless e-commerce platform for retail brands including Samsung, Marks & Spencer, Lacoste, Converse, and GANT.

• 01
  13 Brand Storefronts: Delivered and maintained CMS-driven e-commerce frontends (PLP, PDP, cart, checkout) across 13 storefronts for WMF, Lacoste, Converse, and GANT: Converse Turkey(opens in new tab), Gant Turkey(opens in new tab), SuperStep(opens in new tab), Nautica(opens in new tab), Tefal(opens in new tab), and Flo Morocco(opens in new tab).
• 02
  Interactive Product Customizer: Engineered the Lacoste digital polo customizer(opens in new tab) allowing real-time personalization of collar, cuff, logo, and 4-letter embroidery variations.
• 03
  UI Freeze & State Optimization: Diagnosed and resolved critical client-side state bottlenecks that caused UI freezes in high-traffic checkout flows.
• 04
  Conversion & Analytics Components: Engineered quick checkout flows, cart management interfaces, and integrated custom event tracking analytics across multiple brand funnels.

Istanbul-based startup studio delivering web and mobile products for entrepreneurs across 16 countries, including clients in San Francisco, Amsterdam, and Berlin.

• 01
  Team Leadership & Mentorship: Promoted to Project Lead in 6 months; led a 3-person frontend team, mentored 4 junior developers, and onboarded new engineering hires.
• 02
  Yıldız Holding Mobile App: Independently engineered a mobile application for Yıldız Holding (Godiva, Ülker), managing delivery and customer onboarding end-to-end.
• 03
  Innodash (#5 Product of the Day on Product Hunt)(opens in new tab): Built the startup validation SaaS platform, featuring analytical dashboards, dynamic charts, and cascading Kanban boards.
• 04
  Solo Frontend Delivery: Built 3 web and mobile applications from scratch as the sole frontend developer using React, React Native (HobeeMatch(opens in new tab)), and Next.js (Staalx(opens in new tab)).