---
title: "Hire LLM Developers | Senior, Pre-Vetted LLM Engineers | Agility"
url: https://agilitytech.ai/hire-llm-developers
description: "Hire senior LLM developers to build GPT, Claude and open-model features, fine-tune models and ship them to production with evaluation and guardrails."
publisher: Agility (agilitytech.ai)
---

Hire · LLM Developers

# Hire LLM Developers

Plenty of developers can call an LLM API. Far fewer have kept an LLM feature accurate after real users got hold of it.

- Senior, pre-vetted engineers only
- You interview and choose before anyone starts
- Working-hours overlap with India, the UK and the USA

48-hour turnaround · free · no obligation

### Talk to us about hiring LLM developers

Tell us what you want to build. A senior engineer sends back a scope and a fixed price within two business days, no obligation.

In short

## The quick answer

Our LLM developers build on GPT, Claude and open models, write the evaluation sets that catch regressions, and deploy to your cloud, private cloud or on-premises.

The role

## What our LLM developers do

### What our LLM developers build

- LLM-powered product features and internal copilots
- Fine-tuned and instruction-tuned models on your own data
- Private LLM deployments where data cannot leave your environment
- Evaluation suites that measure accuracy before and after every change
- Guardrails for hallucination, prompt injection and sensitive data

### When to hire a LLM developer

- You have an LLM prototype that needs to become a reliable production feature
- You need a private model because data cannot go to a public API
- Your team lacks evaluation and guardrail experience
- You want to cut model cost or latency without losing quality

Skills

## Skills and stack

- OpenAI GPT
- Anthropic Claude
- Llama and Mistral
- Hugging Face
- vLLM
- LangChain
- LlamaIndex
- Python
- FastAPI

Process

## How hiring works

- 01 ### Share your needs Tell us the stack, the problem and how you want to work. We confirm fit on a short call.
- 02 ### Interview the shortlist We send profiles of pre-vetted senior engineers who match your stack and domain. You interview and choose.
- 03 ### Onboard and ship Your engineers onboard and start delivering without a long recruiting cycle, with working software at the end of each sprint.

Engagement models

## Three ways to work with us

### Staff augmentation

Add one or two senior engineers to your existing team to close a specific skill gap. Your leads, our specialists.

### Dedicated team

A small senior team working only on your roadmap, with a lead who owns delivery.

### Defined project

A scoped build such as a RAG system, a model or a pipeline, delivered to an agreed outcome.

Related work

## See similar systems in production

[Insurance document automation case study](https://agilitytech.ai/case-studies/insurance-automation)[HSN code classification case study](https://agilitytech.ai/case-studies/hsn-classification)[Ship chandler RFQ automation case study](https://agilitytech.ai/case-studies/ship-chandler-rfq)

Next step

Comparing options? Read [what it costs to hire AI developers](https://agilitytech.ai/hire-ai-developers-cost) or [contact us](https://agilitytech.ai/contact) to discuss your project.

FAQ

## Hiring LLM developers: FAQs

[Ask us something else](https://agilitytech.ai/contact)

**What does an LLM developer do?+**

An LLM developer designs, builds and runs features powered by large language models: choosing the right model, writing and testing prompts, connecting the model to your data, fine-tuning where it helps, and adding evaluation, monitoring and guardrails so the feature stays accurate in production.

**Can your LLM developers work with open-source models?+**

Yes. Alongside GPT and Claude, our developers deploy and fine-tune open models such as Llama and Mistral, including fully private deployments on your own cloud or on-premises hardware when data must stay in your environment.

**How quickly can an LLM developer start?+**

We send profiles of pre-vetted senior developers who match your stack, you interview the shortlist, and the developers you choose onboard without a long recruiting cycle. Most engagements ship production AI in 3 to 8 weeks.

**Do you fine-tune models or only use prompts?+**

Both. Many problems are solved with retrieval and good prompting, which is cheaper to run and easier to update. We recommend fine-tuning only when evaluation shows it improves accuracy, tone or cost enough to justify it.

**Who owns the code and models?+**

You do. Code, prompts, evaluation sets and any fine-tuned weights built for you are handed over with documentation at the end of the engagement.

Keep reading

## Related pricing and decision guides

[Hire AI developers (all roles)](https://agilitytech.ai/hire-ai-developers)[Hire RAG developers](https://agilitytech.ai/hire-rag-developers)[Hire LangChain developers](https://agilitytech.ai/hire-langchain-developers)[Hire AI agent developers](https://agilitytech.ai/hire-ai-agent-developers)[Hire machine learning engineers](https://agilitytech.ai/hire-machine-learning-engineers)[Hire MLOps engineers](https://agilitytech.ai/hire-mlops-engineers)

## Get your exact number with a free 48-hour audit

Indicative ranges only get you so far. Tell us the specifics and get a scope and a fixed price in two business days.

Get my fixed estimate