I'm a senior software engineer with 6+ years of experience building production systems, now working at the intersection of classical engineering, AI-assisted development, and LLM training.

I help startups and engineering teams ship production-ready software quickly, from MVP to scalable architecture, without sacrificing code quality. I'm equally comfortable owning a product end-to-end as a solo developer or integrating into an existing team as a senior contributor: clean PRs, thorough reviews, mentoring, and async-friendly collaboration.

🌐 Portfolio

💼 linkedin

✉️ Email: talhanasir167@gmail.com

Classical engineering: 6+ years shipping production systems at scale across marketplaces, healthcare, e-commerce, and SaaS. Full-stack web applications, API design (REST + GraphQL), microservices, integrations, and the architectural thinking that keeps a codebase healthy past its first release.

AI-assisted development: I use AI-assisted workflows to scaffold MVPs in days, then harden them into production-grade systems with proper architecture, testing, and scalability. Comfortable in the modern AI tooling stack (Cursor, Claude Code, Replit Agent, and more) but not dependent on it.

LLM training & evaluation: Paid contributor across RLHF, model evaluation, and annotation pipelines on Mindrift, Toloka, and Turing, covering response quality, instruction-following, and factual grounding across multiple domains. The work gives me hands-on context for what makes models good or bad.

A few of the production systems I've shipped:

• GreatRecruiters: Recruiter review platform with Stripe payments and webhooks. 30% faster page loads via Next.js cache optimization, 30% faster search via pg_search. Mentored 2 junior developers and led sprint planning.
• Agzaga: US e-commerce platform optimized for Core Web Vitals. 65% reduction in order processing errors, multi-marketplace sync (Walmart / eBay / Amazon), TaxCloud integration, zero-downtime Heroku deploys.
• Kaiora: AI-powered health optimization mobile app, built mobile + full-stack architecture solo. Integrated 4 health data providers (Apple Health, Google Fit, Garmin, Oura) with real-time biometric sync and AI-driven personalization.
• TheOneMedical (TOM): Healthcare platform with microservices, REST + GraphQL APIs, and Surescripts e-prescribing integration. Shipped as part of a 3-engineer team with on-call production hotfixes and minimal downtime.

Full case studies and more projects on my portfolio.

🟢 Available for work — full-time contracts, fixed-price MVPs, AI/LLM integration engagements, or long-term retainers.

Core

AI & LLM

Fintech & Integrations

Cloud & DevOps

If you're building something and need a senior engineer who can move fast without leaving a mess, let's talk.

© 2026 Talha Nasir