2026Solo
Sage: an autonomous coding CLI agent
An autonomous coding CLI agent: plans a change, waits for approval, then executes it inside a sandboxed workspace.
PythonFastAPISQLite
AI Engineer
I build AI systems that hold up in production.
I am Raj Gajjar, an ai engineer in Ahmedabad, India. I work on retrieval, agents, and the API layer underneath them, mostly in Python and FastAPI.
I'm an AI engineer in Ahmedabad, and I'm most curious about software that acts on its own: agents that plan before they touch anything, voice assistants you can actually hold a conversation with, and tools that turn plain language into real work. Outside of that, I like digging into how the things we take for granted work under the hood, like TLS, and building interfaces with a bit of motion in them, like the plane you've been following down this page.
Selected work
Things I have built
2026Solo
Voice Agent: tasks and calendar over a live call
A voice assistant you talk to over a live call: manages your to-do list and Google Calendar, with every conversation saved and resumable.
LiveKitFastAPIReactGroqDeepgramElevenLabs
2026Full-stack
AutoInvoice: GST invoicing for small businesses
An invoicing app for small businesses: create GST invoices, delivery challans, and proformas, then send them as PDFs over email or WhatsApp.
FastAPIReactPostgreSQLRedisAWS LambdaCloudflare Workers
How I work
What working with me looks like
First I learn what a right answer looks like to you.
Not the roadmap, the actual work: your data, your edge cases, the questions your users type at 2am. AI projects fail on that definition far more often than they fail on the model.
You see the thing running, not a status report.
Every week there is something you can open and try against your own data. Nothing important gets discovered in the last sprint, when changing direction costs the most.
You get to see how often it is wrong.
Real cases from your world, the answers you would accept, a score that reruns on every change. Nothing ships here because it demoed well once on a Tuesday.
I work inside your setup, not around it.
Your repo, your review cadence, your pace. A two person startup and a team of forty need very different amounts of process, and the handoff should run on yours without me in the room.
Have something worth building?
I am open to AI engineering and backend roles, and to contract work on retrieval systems, agents, and Python APIs. The fastest way to reach me is email.