21K School

AI Engineer (LLM)

Job · Full-timeIn OfficeLucknow, Uttar Pradesh0–2 years53K/mo2 openingsImmediate / as per notice period

About this role

21K School is recruiting a AI Engineer (LLM) for its Lucknow team. The role suits someone early in their career who wants depth in applied generative AI rather than a rotation through everything at once. About the role In this role you will be building product features on language models and…

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Skills you'll use

PythonLLM APIsPrompt DesignRetrieval-Augmented GenerationVector DatabasesEvaluation SetsREST APIsCost & Latency ManagementGitError Analysis

What you'll do

Build features on top of language models and ship them
Design retrieval and grounding so answers can be cited
Build evaluation sets and measure changes against them
Manage token cost, latency and failure modes
Work with product on what the feature should refuse to do
Flag risks and blockers early rather than at the deadline
Keep your tracker and status honest, including when something has slipped

Who can apply

B.E./B.Tech (CSE/IT/ECE), BCA/MCA or B.Sc/M.Sc (Computer Science / IT) from a recognised university
0–2 years of relevant experience — internships, academic projects and personal work all count, and 2026 graduates are welcome
Working knowledge of Python, LLM APIs, Prompt Design
Comfort with Python, LLM APIs and a vector store, and the ability to pick up an unfamiliar tool without waiting to be taught it
The judgement to know when a problem is yours to solve and when it needs escalating — and to escalate with the relevant detail attached.
Attention to detail, ownership and the discipline to document your work
Based in Lucknow, Uttar Pradesh or willing to relocate

Perks & benefits

Modern hardware and the tool licences your role needsInternal knowledge sessions and access to senior reviewersClear, written progression criteria rather than an annual surpriseEmployee referral and performance bonus schemesTeam offsites and regular in-person timeSupport for internal mobility across teamsFixed monthly salary, paid on timeStructured onboarding with a named mentor for the first 90 days

Interview & selection process

3 rounds — typical selection flow for this role:

1Resume screening and profile shortlisting by the talent acquisition team
2Technical or practical round based on the day-to-day work of the role
3HR discussion — compensation, notice period, joining date and offer roll-out

About 21K School

21K School operates in the it services sector and runs an active team in Lucknow. It is a working employer with real customers and real deadlines — the role advertised here exists because there is work that needs doing, not to fill a headcount plan. Industry and what the company does 21K School…

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