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AI engineer who ships LLM products to production and measures them honestly: retrieval, multi-turn LLM flows, eval harnesses, security and the infrastructure that keeps them up. Comfortable owning a product end to end on a small team, and fluent with AI coding agents.
Experience
AI / Backend Engineer · LD Technologies
Feb 2025 – present · Remote · full-time- Built the AI matching service for a large Japanese recruiting database: FastAPI, Elasticsearch retrieval with filters, a 3-turn LLM pre-screening flow (EN/JA) with idempotent sessions and HMAC-signed webhooks. 253 commits, 128 PRs.
- Rebuilt a filter-aware eval golden set, showing real recall@10 was 0.57, not 0.19, on identical outputs. Cut degenerate clarifying questions from 85% to 0% (verified on 72 live scenarios).
- Ran an LLM reranker trial (48k judgements for $2.31) with holdout and bias audit; caught my own inflated +30% and reported +12.9%.
- Co-led engineering on RefineCV, a B2B CV-formatting SaaS (FastAPI, React 19, Supabase, WeasyPrint): 435 commits and 203 PRs in 5 months. Fixed a cross-tenant authorization flaw across 63 call sites; found the cause of production 500s (sync PDF rendering starving the event loop). Picked the AI assistant's model via a 24-model, 3,162-turn bake-off.
- Built v1 of Recruiter Copilot (Chrome MV3 + Supabase Edge Functions) and shipped 11 Web Store releases (400+ installs); closed a cross-account RLS leak and a billing exploit.
- Sole engineer on a CRM migration for a UK agency: 18 GB keyless SQL Server → REST-only CRM. 253,541 activities, 36,661 people, 0 missing, 99.97% exact on reconciliation.
Freelance AI & Automation Engineer · Upwork
Jun 2026 – present · Remote- Evaluated AI coding agents on SQLAlchemy, SymPy, NetworkX and Astropy, reproducing real upstream bugs to grade model fixes.
- Built self-hosted n8n automations (Stripe → Thinkific → Slack; lead enrichment → HubSpot) with duplicate-safe webhooks and full failure-test suites.
Backend Developer (Intern) · Paragon Dynamics
May – Jul 2024 · Chennai- Visitor-management system for shipping & logistics (Angular, Flask, PostgreSQL); optimised slow queries.
Backend & ML Engineer · Mitwa.ai
Dec 2023 – Apr 2024 · Hybrid- Backend, auth and OpenAI integration for an AI wellbeing companion; fine-tuned Mistral-7B with DPO on 6k and 18k-pair datasets (Hugging Face: Rishi-19).
Skills
Python, FastAPI, TypeScript, React, Elasticsearch/OpenSearch, Supabase/Postgres, Docker, AWS (CDK, Lambda), GitHub Actions, Playwright, LLM evals (golden sets, recall@k, LLM-as-judge), OpenRouter, Cerebras, Claude, OpenAI, n8n, Claude Code.
Education & open source
MBA Tech, Computer Engineering · NMIMS MPSTME, Mumbai (2021–2026). Merged contribution to Keras (#22407). Smart India Hackathon 2024 & 2025.