Thermo Fisher Scientific India

RAG & LLM Engineer Intern

InternshipIn OfficeGuwahati, Assam3 months18K/mo4 openingsImmediate / Rolling

About this internship

Start your career in retrieval-augmented generation with Thermo Fisher Scientific India as a RAG & LLM Engineer Intern in Guwahati. You will sit with a working team, use the same tools and systems they do, and own a defined piece of work from day one. About the role As a RAG & LLM Engineer Intern…

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Skills you'll use

Retrieval-Augmented Generation (RAG)Vector Databases (Pinecone / Chroma)EmbeddingsPythonLangChain / LlamaIndexChunking StrategiesLLM EvaluationDocument ParsingREST APIsLatency & Cost Tuning

What you'll do

Work on building retrieval pipelines that keep model answers grounded in real documents alongside the core team
Apply Retrieval-Augmented Generation (RAG), Vector Databases (Pinecone / Chroma), Embeddings, Python to live, production-facing problems
Document your work clearly for reviewers and stakeholders
Participate in reviews and act on the feedback you receive
Collaborate across engineering, product, design or business as required
Follow the team's quality, testing and documentation standards

Who can apply

Pursuing or recently completed B.E./B.Tech (CSE/IT/AI-ML), MCA or M.Sc (CS / Data Science)
Graduating batch 2025, 2026 or 2027 — final-year students and recent graduates welcome
60% / 6.0 CGPA and above preferred; strong project work is considered alongside academics
Working knowledge of Retrieval-Augmented Generation (RAG), Vector Databases (Pinecone / Chroma), Embeddings (or a genuine willingness to learn them)
Exposure to Python, LangChain / LlamaIndex, Chunking Strategies is an advantage
Clear written and verbal communication in English, and care with detail in your work
No prior work experience required — this is a fresher-friendly internship
Based in Guwahati, Assam or willing to work from there for the internship period

Perks & benefits

Letter of RecommendationMentorship from a named mentorLive project experienceExposure to professional tools and workflowsPre-Placement Offer (PPO) opportunity

Interview & selection process

4 rounds — typical selection flow for this role:

1Application screening & resume shortlisting by the talent team
2Team-fit / behavioural interview with the team
3Online aptitude / domain assessment
4HR discussion — stipend, start date, expectations and offer

About Thermo Fisher Scientific India

Thermo Fisher Scientific India operates in the life sciences sector and has an active presence in Guwahati. Interns here are put on real work from the start, because the team's view is that the fastest way to learn a craft is to practise it under people who already do it well — not to watch it from…

Visit Thermo Fisher Scientific India’s official website ↗

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