James Yigit K

Generative AI Engineer/Founder

NoxAI

Dec 2025 - Current (8 months)

• Architecting the NoxAI AI platform, building agent-based LLM systems in Python that integrate tool APIs, retrieval-augmented generation (RAG), and persistent memory. • Developing AI applications powered by foundational models, implementing embedding pipelines, vector search, and context orchestration for intelligent assistants. • Building multi-agent orchestration frameworks enabling tool calling, structured outputs, and autonomous task execution across connected services.

Senior Prompt Engineer

Postscript

Sep 2025 - Nov 2025 (3 months)

• Built LLM supervisors, evaluation pipelines, and functional filters using Python and LLM agents, improving output accuracy by ~25% • Designed a scalable agentic architecture with payload aware classifiers that reduced the cost of LLM API calls by ~40% • Led a team of prompt engineers and introduced prompt tooling, version control, AI driven prompt workflows, and system aware prompt agents that increased engineering output efficiency by ~30%

Prompt Engineer

EA Sports

Nov 2024 - Sep 2025 (11 months)

• Built LLM-driven automated quality-verification systems. • Designed an end-to-end automation pipeline: used Python automation scripts, async LLM calls via APIs, specialized AI agents, CoT and ReAct prompting. Everything in cloud, scalable. • Reached ~96%+ consistent LLM decision accuracy in production tests.

QA 2

EA Sports

Mar 2024 - Nov 2024 (9 months)

EA SPORTS FC™ Mobile - EA SPORTS Official Site

Data Analyst Teaching Assistant

Miuul

Feb 2024 - Jul 2024 (6 months)

Senior Quality Analyst

Keywords Studios

Oct 2023 - Mar 2024 (6 months)

Quality Analyst

Keywords Studios

Apr 2023 - Oct 2023 (7 months)

Buy FIFA 23 – PC – EA

Web Developer

Finch's Tea & Coffee House

Apr 2022 - Apr 2023 (1 year 1 month)

Senior Investment Analyst

NDA

Nov 2020 - Nov 2021 (1 year 1 month)

Co-Founder

Mentor

Jan 2018 - Nov 2020 (2 years 11 months)

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