Nick Kosi
@nickkosi
AI-focused backend engineer delivering scalable production systems for healthcare and consumer AI.
NigeriaWhat I'm looking for
I am an AI-focused backend engineer with proven experience building production-grade systems that leverage large language models, real-time streaming, and scalable backend architectures for healthcare and consumer applications. I have delivered multi-tenant healthcare platforms supporting 100 hospitals and AI-powered products serving thousands of users while improving performance, retention, and reliability.
My work emphasizes reliable data processing, optimization, and testing: I built an LLM streaming conversation system with persistence and multichannel notifications, optimized PostgreSQL queries to reduce response times by 45%, and established testing frameworks achieving 80% coverage. I prioritize secure, maintainable systems that drive measurable product outcomes and operational uptime.
Experience
Work history, roles, and key accomplishments
Software Engineer
Oyster Skin
Jul 2025 - Present (3 months)
Engineered a production real-time AI conversation streaming system serving 4,000 registered users and 1,000 daily active users, implemented persistence and multichannel AI notification infrastructure, and improved user retention by 35% through gamification.
Software Engineer
AfriHealth Limited
Jul 2024 - Jul 2025 (1 year)
Architected a multi-tenant enterprise healthcare platform with 24 backend modules and ~300 API endpoints serving 100 hospitals and 5,000 patients, optimized PostgreSQL queries to reduce API response time by 45% and achieved 99.5% uptime via robust integrations and failover.
Education
Degrees, certifications, and relevant coursework
CUColorado State University
Bachelor's coursework, Computer Science
Completed Bachelor's coursework in Computer Science at Colorado State University.
FOFederal University of Technology, Owerri
Bachelor of Technology, Chemistry
Completed a Bachelor of Technology (B.Tech) degree in Chemistry at the Federal University of Technology, Owerri.
Availability
Location
NigeriaAuthorized to work in
Job categories
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