Lead Backend / Fullstack · New Delhi

I build the engine
under the product.

Multi-agent LLM→SQL pipelines, runtime-connector engines, and the real-time, cost-aware infra that serves them — then I cut the latency and the bill.
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01 / live · terra engine

A slice of Terra, running in your browser.

The real Terra turns a question into governed SQL and picks a meaningful chart. This runs that pipeline client-side — your words → SQL (parsed & read-only-checked) → real SQL over an in-browser database → my chart-reasoning engine choosing what's worth plotting. No backend, no LLM.

Ask something above, or tap a starter:

Dataset: rozeen.career — his own experience, projects & skills.

02 / selected systems

Engines I've shipped.

  1. Terra — Conversational Analytics

    terrabase.ai ↗ · backend & chart engine · 2026

    A multi-agent LLM platform that turns a plain-English question into governed SQL, charts and insights. I built the backend and the chart-reasoning engine.

    • Multi-agent LLM→SQL over LangGraph/LangChain with real-time SSE streaming through nested ReAct agents.
    • A generic runtime-connector engine unifying 8 data sources (Snowflake, Salesforce, Shopify, Stripe, HubSpot…) with opaque-cursor pagination & content-hash tamper protection.
    • SQL safety & cost: read-only + SQLGlot-parse + AST minimal-change across 8 dialects; two-tier Redis→Postgres schema cache; per-org token metering.
    • A chart-reasoning engine that decides which charts are meaningful (not just renderable), with lossless chart-type switching → Vega-Lite.
    • Python
    • FastAPI
    • LangGraph
    • Snowflake/BigQuery
    • Redis
    • Celery
    • Postgres
    • React

    The live console ↑ runs a slice of this.

  2. AI Interviewer — the backend

    NavGurukul · zoe.zuvy.org ↗ · Lead Backend · 2025

    Lead backend of the LLM voice-interview platform — the engine under the voice. 2026 MIT Solve global winner (1 of 6, $200K grant).

    • Migrated to a fully client-side React architecture — −60% latency and lower inference cost.
    • An edge Cloudflare Worker that streams DeepSeek completions while keeping the provider key off the browser.
    • Interview/invite lifecycle state machine, async leveled-scoring pipeline, Firestore→Postgres migration, proctoring, bounce-detecting atomic bulk email.
    • Owned staging & production (AWS EC2 + Amplify); led planning, code reviews, system design.
    • FastAPI
    • PostgreSQL
    • Cloudflare Worker
    • Redis
    • React

    The voice half lives here → tanyabharara.vcreate.co.in ↗

  3. Bugbuster Labs — founding engineer

    bugbusterslabs.com ↗ · 3-person founding team

    Helped build the foundation of an AI-powered bug-bounty / vulnerability-discovery platform (AI triage, VDP, remediation tracking) — fullstack, and I owned the report-generation system.

    • Built fullstack across the platform with a 3-person team laying the groundwork.
    • Designed and shipped the report-generation pipeline — findings, severity, remediation, exports.
    • React
    • Node.js
    • Report generation
    • PostgreSQL

  4. Procurement Intelligence

    BoldTek · usairdrop.info ↗ · 2025

    Data pipelines ingesting & enriching U.S. government procurement — delivered a U.S. Airdrop tool end-to-end in 6 weeks.

    • Scheduled scrapers, dedup & normalization over SAM.gov, DLA, PartsBase, ILS (TypeScript · Playwright).
    • Owned CRM backend, integrations (WhatsApp / Facebook Business / email) and on-call production hardening.
    • Node.js
    • TypeScript
    • Playwright
    • PostgreSQL

Also shipped — production web & mobile apps

03 / toolkit

Backend & APIs

Node.js · Express · FastAPI · REST · GraphQL · WebSockets · SSE · gRPC · OAuth2 / JWT

AI & LLMs

LLM orchestration · Multi-agent · RAG · LangGraph · LangChain · DSPy · STT/TTS · OCR · Vector search

Data & streaming

PostgreSQL · MongoDB · Redis · Snowflake · BigQuery · Kafka · Celery · Event-driven systems

Cloud & DevOps

AWS (EC2 · S3 · RDS · Lambda) · GCP · Docker · Kubernetes · CI/CD · Cloudflare Workers · Linux

04 / experience

  1. Aug 2025 — now

    Lead Backend, AI Engineer · NavGurukul

    Built & shipped the AI Interviewer; architected AI-education systems; led the Firestore→Postgres migration, GenAI pipelines, and prod/staging deployments.

  2. Apr — Aug 2025

    Senior Software Developer · BoldTek India

    Scalable backend + data pipelines for enterprise procurement & CRM; shipped a U.S. Airdrop procurement tool end-to-end in 6 weeks.

  3. Jul 2022 — Apr 2025

    Software Developer I · Xopuntech India

    React frontends + Node.js services across ed-tech, agri-tech & consumer; shared UI/API layers reused across products; owned features design→deploy.

  4. Jul 2021 — Jul 2022

    Fullstack Developer · DealAmaze India

    Fullstack for AI-enabled security & large-scale e-commerce; REST APIs, admin tooling, order/inventory workflows.

  5. 2018 — 2022

    B.Tech, Computer Science · Barak Valley Engineering College

    7.6 CGPA.

05 / contact

Let's wire something up.

Backend, systems, AI infra — or just to talk shop. Drop a line.

Emailrozeenhussain@gmail.com GitHubgithub.com/12ose ↗ LinkedInin/12ose ↗ RésuméDownload PDF ↓