Skip to content
HHussain C
File 001
Hussain C
Role
AI engineer
Mode
Forward deployed
Based
Surat, IN · any timezone

I build AI that keepsworking after the demo.

Eighteen years of shipping software. These days it's mostly LLM systems, for teams who needed them in production rather than in a slide.

EmailWhatsAppRead the file ↓

01Subject

Eighteen years, mostly spent shipping.

Hussain C, AI engineer, in Surat
Subject · Hussain CSurat, IN

Shipping software since 2008

18yrs

Every rated Upwork job. Not one lower.

5.0×113

8,190 hours billed since 2013

128jobs

Longest single contract, start to finish

13mo

What I'm good at

  • Agents
  • RAG
  • MCP
  • Tool calling
  • Evals
  • LLM integration

How I work

I sit with your team, find the part of the work worth automating, and stay until it runs without me.

Gold medal, B.E. Computer Science

Gold

02Open files

Six I can show you.

Two are mine. Four are client products I built or lead. Those four are here for you, not for Google, so they're kept out of search on purpose.

03Private work

Most of my best work belongs to someone else.

Products under NDA, and crypto projects that have since closed. Here's the shape of it. Names and details stay private, but I'm happy to walk you through the engineering on a call.

Private work under NDA: year, role, stack, scope and complexity. Client names are withheld.
2025Name withheld under NDAAILead AI engineer
  • Python
  • OpenAI
  • RAG
  • PostgreSQL
Multi-step agent · 3 integrations · eval suiteComplexity 5 of 5
2025Name withheld under NDAAIAI engineer
  • Claude
  • Tool calling
  • Node.js
Agent with typed tools · human review stepComplexity 4 of 5
2024Name withheld under NDAAILead engineer
  • Next.js
  • OpenAI
  • pgvector
Search over private documents · cited answersComplexity 4 of 5
2024Name withheld under NDAProductFull-stack engineer
  • Laravel
  • React
  • Stripe
Multi-tenant dashboard · role-based accessComplexity 3 of 5
2023Name withheld under NDAProductMobile lead
  • React Native
  • Node.js
  • AWS
iOS and Android · offline syncComplexity 3 of 5
2019Name withheld under NDAWeb3Lead blockchain developer
  • Solidity
  • Node.js
  • Bitcoin Core
Multi-chain integrations · key managementComplexity 5 of 5
2018Name withheld under NDAWeb3Lead smart contract developer
  • Solidity
  • Ethereum
  • Truffle
Upgradeable contracts · public verificationComplexity 4 of 5
2017Name withheld under NDAWeb3Lead blockchain developer
  • QTUM
  • Solidity
  • Node.js
Token contracts · REST API over the chainComplexity 3 of 5

+ 120+ more engagements, all private

Under NDA

04What I'm hired for

Four kinds of work. One person answers for all of it.

05Toolkit

What I build with.

Models, frameworks and the plumbing around them. The list moves every few months and I move with it. If your team uses something that isn't here, I'll pick it up and tell you honestly how long that takes.

Forward deployed

The part that isn't a tool.

  1. 01Sitting with the people who do the work
  2. 02Scoping what's worth automating
  3. 03Prompt and context engineering
  4. 04Evals before anything ships
  5. 05Guardrails, PII redaction, approvals
  6. 06Cost and latency budgets
  7. 07Rollout, training and handover
  8. 08On call after launch

Models

08
  • Claude
  • GPT and o-series
  • Gemini
  • Llama
  • Mistral
  • DeepSeek
  • Qwen
  • Fine-tuning (LoRA)

Agent frameworks

12
  • LangChain
  • LangGraph
  • LlamaIndex
  • OpenAI Agents SDK
  • Claude Agent SDK
  • Vercel AI SDK
  • CrewAI
  • AutoGen
  • Pydantic AI
  • Google ADK
  • Mastra
  • DSPy

Tools & protocols

07
  • MCP
  • A2A
  • Function calling
  • Structured outputs
  • Computer use
  • Browser agents
  • Playwright

Retrieval & memory

10
  • Embeddings
  • pgvector
  • Pinecone
  • Qdrant
  • Weaviate
  • Chroma
  • Hybrid search
  • Rerankers
  • GraphRAG
  • Document parsing

Evals & observability

08
  • LangSmith
  • Langfuse
  • Braintrust
  • Arize Phoenix
  • promptfoo
  • Ragas
  • LLM-as-judge
  • OpenTelemetry

Hosting & gateways

10
  • AWS Bedrock
  • Azure OpenAI
  • Vertex AI
  • OpenRouter
  • LiteLLM
  • Groq
  • Together AI
  • Hugging Face
  • Ollama
  • vLLM

Voice & vision

08
  • OpenAI Realtime
  • Whisper
  • Deepgram
  • ElevenLabs
  • LiveKit
  • Vapi
  • Twilio
  • Vision & OCR

Workflows

07
  • n8n
  • Zapier
  • Make
  • Temporal
  • Inngest
  • Trigger.dev
  • Queues & cron

Product stack

13
  • Python
  • TypeScript
  • FastAPI
  • Next.js
  • Node.js
  • Laravel
  • React Native
  • PostgreSQL
  • Redis
  • Docker
  • AWS
  • Vercel
  • Cloudflare

AI coding

06
  • Claude Code
  • Cursor
  • Codex
  • GitHub Copilot
  • Replit
  • v0

06Word of mouth

What clients say once it's live.

Eleven years of Upwork reviews, word for word. Where Upwork cuts one short, so do I.

Every rating since 2013

113/113

Rated jobs that closed at 5.0. None lower, in eleven years of contracts.

105 written reviews · Upwork

Repeat client

×9

One founder hired me nine times in seven months. Every contract closed at 5.0.

Nicholas · Feb to Sep 2024

What clients ticked when the job closed

124 jobs

  • Committed to quality70
  • Reliable41
  • Clear communicator38
  • Collaborative35
  • Solution oriented17
  • Professional13
  • Detail oriented8
  • Accountable for outcomes3

01 / 18

  • GPT development and integration★★★★★

    “Hussain combines the ability to think long term and strategically with a differentiated ability to execute. It's a total pleasure to work with him, and I look forward to having…”
    • Collaborative

    Nicholas · Sep 2024 · excerpt

  • AI onboarding assistant★★★★★

    “Hussain is terrific to work with. Extremely high quality work delivered quickly. Great communication and planning. I would be very keen to find an opportunity to work with him again.”

    Upwork client · Feb 2024

  • Site dashboard and functions★★★★★

    “Hussain is a star. Thoughtful, proactive, productive, creative. I love having the opportunity to work with him and appreciate his expertise in building thoughtful, AI-enabled systems.”
    • Solution oriented
    • Collaborative

    Nicholas · May 2024

  • Platform maintenance, 13 months★★★★★

    “Hussain has superb technical skills, a broad understanding of business requirements, great communication skills, and provides the highest level solutions on time an on budget even when there are massive…”

    Upwork client · Jun 2020 · excerpt

  • OpenAI tools implementation★★★★★

    “I have – and can continue to – write essays about how great Hussain is. I look forward to the opportunity to work with him again.”
    • Collaborative

    Nicholas · Jun 2024

  • Comparison website★★★★★

    “Hussain has qualities that are very rare. He listens and adapts to a fluid situation and is keen to evolve the project as it grows. He is quick to pick…”

    Upwork client · Feb 2014 · excerpt

  • Full-stack dashboard★★★★★

    “Hussain continues to set an extremely high standard in the work that we do together. His work is always top notch. He is thoughtful about how to approach projects. …”
    • Committed to quality
    • Reliable
    • Clear communicator

    Nicholas · Jul 2024 · excerpt

  • Mobile app API and backend★★★★★

    “Hussain demonstrated the highest level of skill and quality of work, and completed the project ahead of schedule, while maintaining great communication and cooperation throughout.”

    Upwork client · May 2019

  • Third-party integrations and background workers★★★★★

    “Hussain delivered a high quality solution requiring an extreme level of technical skill in a short time and on budget”

    Upwork client · Feb 2019

  • Solidity development★★★★★

    “Amazing work again! I would never use anyone else!”

    Upwork client · Apr 2018

  • Web3 and Node.js on Google Cloud★★★★★

    “This is a genuine 5 star contractor who exhibits dedication, skill, passion and true interest. Not only did he complete the task, he offered suggestions based on what would be…”

    Upwork client · Jan 2018 · excerpt

  • WooCommerce build★★★★★

    “Hussain took our original concept, made it better, completed on time and came in under his estimated price. He is a rare and skilled programmer who was great at communicating…”

    Upwork client · Oct 2013 · excerpt

  • Web development, third contract★★★★★

    “This was our 3rd time hiring Hussain and we will certainly hire him again. He did another great job. He's very professional in all regards: project management, customer service, development…”

    Upwork client · Mar 2013 · excerpt

  • REST API deployment for a UX research study★★★★★

    “Hussain did a great job on a LAMP REST API deployment to Google Cloud Platform. We'd be happy to work with this freelancer again.”
    • Committed to quality
    • Collaborative

    Enterprise client · Mar 2024

  • Smart contract testing and rework★★★★★

    “Hussain continues to do amazing work! Implementing the best practices and up to date use of different solidity solutions.”

    Upwork client · Jun 2018

  • Ethereum JSON-RPC integration★★★★★

    “Hussain is a very good developer to build complex smart contracts on Ethereum. We hire him a few times and every time he succeed to build what we need. …”

    Upwork client · Mar 2018 · excerpt

  • Salesforce development★★★★★

    “Great job! Very quick turn around. Asked really great questions. Worked at a solution around a problem that occurred without bothering me with huge amounts of techno-babble! Would highly recommend!”

    Upwork client · Jul 2013

  • JavaScript platform fix★★★★★

    “the best programmer on odeks, all time fix my problems and his code is very clean and never fail”

    Upwork client · Jan 2013

Every review, on Upwork

After Upwork

Upwork is the front door. Most clients stay a lot longer.

Most of my clients found me on Upwork. Plenty of them don't hire me there anymore. Once we trust each other and know how the other one works, we move to working directly, and keep going for years.

So the reviews above are where most of these relationships started, not the whole of them.

Where we work

  • TrelloBoards and tickets
  • JiraSprints and tickets
  • EmailSpecs and sign-off
  • WhatsAppQuick calls and questions

Short updates, no chasing. You always know what's done and what's next.

Direct

07Contact

Tell me what you're trying to fix.

I read every message myself and usually reply the same day. A rough idea is enough to start.

Or send a short brief

Hours

Your hours work for me.

  • San Francisco

    --:--

  • New York

    --:--

  • London

    --:--

  • Berlin

    --:--

  • Dubai

    --:--

  • Singapore

    --:--

  • Sydney

    --:--

  • Surat

    --:--

    Me

I keep flexible hours and move my day to overlap with yours, whether that's a morning standup in New York or a late release in Sydney.