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Sarthak KumarSK
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Sarthak Kumar

@sarthakkumar1

LLM Post Training Intern at Ethara.AI who evaluated and improved LLM responses through RLHF, prompt evaluation, and response ranking.

India
Message

At Ethara.AI, I evaluated and improved LLM responses through RLHF, prompt evaluation, response ranking, and annotation to support model alignment. I assessed outputs for accuracy, reasoning, coherence, instruction-following, and safety.

On CampusConnectAI, I built a RAG pipeline with FAISS and MiniLM-L6-v2 embeddings, improving semantic retrieval accuracy by 65% over keyword-based search. I also developed Aura-CX, a multi-agent commerce platform, and an OpenCV-based face recognition attendance system.

Experience

Work history, roles, and key accomplishments

ET

LLM Post Training Intern

Ethara.AI

Mar 2026 - May 2026 (2 months)

Evaluated and improved LLM responses using RLHF, performing prompt evaluation, response ranking, and annotation. Assessed model outputs for accuracy, reasoning, coherence, instruction-following, and safety.

Education

Degrees, certifications, and relevant coursework

G.L Bajaj Institute of Technology and Management logoGM

G.L Bajaj Institute of Technology and Management

B.Tech, Computer Science and Engineering

2022 - 2026

Grade: 8.23

Activities and societies: Participate in Hackathons

Pursuing a B.Tech in Computer Science and Engineering with a GPA of 8.23.

MS

Modern Era Public School

Senior Secondary (XII), PCM

2020 - 2021

Grade: 89.83%

Completed Senior Secondary (XII) with PCM, achieving a percentage of 89.83%.

MS

Modern Era Public School

Matriculation (X), General

2018 - 2019

Grade: 85.17%

Completed Matriculation (X) with a percentage of 85.17%.

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