
Ziya Ogul
AI App Engineer
Habilidades

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Porfolio
Experiencia laboral
Applied Ai Engineer
Themsis • Freelance
Dec 2025 - Present • 9 mos
Building a Python-based retrieval pipeline for Turkish legislation, constitutional provisions, court decisions, and other legal sources, embedding and storing the corpus in Supabase/pgvector. Implemented case-aware retrieval and context construction so Claude/GPT receive the most relevant legal material for the active matter instead of a generic knowledge dump. Designing the assistant as an agentic workflow: tool use, MCP integrations, case context, user follow-up, and failure handling are part of the system rather than separate add-ons. Using AI evaluation/testing and observability to inspect retrieval and model behavior, with local-model experiments and smallscale fine-tuning work used to explore quality and system trade-offs
Mobile Creator
Shapely • Freelance
Dec 2024 - Apr 2025 • 4 mos
Built a cross-platform AI writing product with multi-provider model routing, using GPT-4o for Pro users and Gemini for the standard tier to balance capability and inference cost. Iterated on prompt and context construction for text-transformation flows and added model failure handling around provider calls. Engineered a reusable design system and five-language i18n support, with Firebase and Adapty supporting freemium product flows and paywall analytics.
Mobile Creator
Nixara • Freelance
Dec 2023 - Apr 2024 • 4 mos
Architected and shipped a cross-platform AI product released on Apple App Store and Google Play across international markets. Integrated OpenAI and Anthropic across five AI features, designing prompts, context flows, and personalized responses around user-specific data and product state. Built production LLM workflows with validation, failure handling, retries/fallbacks, and observability around model interactions so AI behavior could be diagnosed after release. Resolved an App Store 4.3 policy rejection, rebranded and relaunched the product with expanded functionality within one week; also migrated subscriptions from RevenueCat to Adapty