01
Stateful agent graphs
Multi-step LangGraph workflows with checkpointed state, so a long-running agent can pause, resume and be inspected.
Senior / Staff
Hire senior AI agent and LLM engineers
AI engineers who build agent workflows that call your real systems — with schema-validated tool calls, evaluation suites, and a human approval step wherever a mistake would be expensive.
Role profile
What we look for in a Senior AI Agent & LLM Engineer
Seniority and experience are agreed in the proposal, and you interview every engineer before they start. These are the skills that interview should test.
02
Validated tool calls
Agents call internal APIs and CRMs through typed tool definitions, with JSON schema validation, retries and least-privilege credentials.
03
Human-in-the-loop controls
Review queues that hold financial, legal or customer-facing actions until a person approves them.
Typical work
What a Senior AI Agent & LLM Engineer typically works on
Examples of the scope this role is hired for. Your statement of work sets the actual deliverables and how they are accepted.
- 01Support agents that resolve routine tickets through your APIs and hand the rest to people
- 02Pull-request review bots that comment with suggested fixes
- 03Multi-agent research and document synthesis pipelines
- 04Prompt-injection defenses and PII redaction in front of the model
Stack and tools
What this role works with day to day. Tell us your stack and we’ll say plainly which parts we can staff.
- LangGraph
- Python
- Anthropic Claude
- OpenAI
- FastAPI
- Pydantic
Technology guides
Related service
AI development servicesAI built for the compliance review — validated outputs, humans in the loop, results measured in cycle time.
How hiring works
Four steps, agreed in writing before anyone starts
01
Tell us the role
The stack, the seniority you need, the hours you want covered, and any certifications the work requires. We reply within one business day.
02
We propose engineers
A written proposal sets out who we'd put forward, their seniority and experience, the scope, and the terms. If we can't staff the role well, we say so.
03
You interview every engineer
Nobody starts on your codebase until you've interviewed them and agreed. Use the skills on the role page as your interview checklist.
04
Working arrangements go in the SOW
Working-hours overlap is agreed for each engagement and written into the statement of work — the shared window, who shifts hours, and how handoffs work outside it.
QuantmHill provides development teams from India for Indian startups and SMEs. Role profiles describe project capabilities; availability is confirmed for your engagement. Our team works on India Standard Time. Project working hours, availability and handoff responsibilities are agreed before kickoff.
Need specific certifications? Tell us at the start and we'll confirm whether we can staff to that requirement before you sign. There are no recruiting fees.
FAQ
Questions about hiring a Senior AI Agent & LLM Engineer
Answered the way we would on a call. If yours isn’t here, send it — we reply within one business day.
Recursion limits, explicit graph edges rather than free-form planning where possible, and escalation to a person when confidence or budget thresholds are crossed. Every run is traced, so you can see why the agent did what it did.
Yes, through typed tool definitions with scoped, short-lived credentials. Agents get read access by default; write actions go through validation and, where the stakes warrant it, human approval.
With an evaluation set built from your real cases before launch, scored on every change to prompts, tools or models. Hallucination can't be ruled out entirely, so the design assumes errors will happen and catches them.
Related roles
Similar and adjacent roles
Add a Senior AI Agent & LLM Engineer to your team
Tell us the stack, the seniority you need and the hours you want covered. We reply within one business day, and you interview every engineer before they start.