nerixim
Product engineeringAI systemsCross-border products

Freelance senior full-stack engineer.

Nine years building web applications and AI pipelines for startups. I work in English, Japanese, and Russian.

Get in touchSelected work

What I do

Product engineering

End-to-end web and mobile development. I usually work with TypeScript, React, Ruby on Rails, and AWS.

AI systems

LLM pipelines that hold up in production. I build eval harnesses, hallucination observability, and workflow automation.

Cross-border products

Technical i18n and Japan-market execution for multilingual software.

Writing

All posts

Keeping LLM features honest in production

5 min read

Notes on the reliability layer around a production LLM feature: fixed-case evaluation, LLM-as-judge grading, hallucination observability, and letting coding agents do real CI work without letting them mark their own homework.

llmevalsai-agentsproduction

Available for freelance work.

I handle product development, infrastructure setup, cross-border execution, and architecture advisory.

Contact me