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I’m Chander Shekhar, a technologist and public servant with 14+ years of experience blending large-scale AI/ML, LLM & RAG systems, and distributed systems with government administrative leadership. I’ve led modernization initiatives across vector search, ANN benchmarking, and low-latency retrieval pipelines—turning hard production constraints into measurable improvements for search and face-recognition workflows. Currently as an Assistant Director in the Ministry of Home Affairs (GoI), I also apply hands-on expertise in prompt engineering, LLM evaluation, RAG pipeline design, and AI data annotation/training. Previously, I built production search and data infrastructure as an SDE at Amazon India, Microsoft India, and Glance InMobi, and I enjoy mentoring and teaching—skills shaped through tutoring and interview preparation support for competitive government technical recruitment.…I’m Chander Shekhar, a technologist and public servant with 14+ years of experience blending large-scale AI/ML, LLM & RAG systems, and distributed systems with government administrative leadership. I’ve led modernization initiatives across vector search, ANN benchmarking, and low-latency retrieval pipelines—turning hard production constraints into measurable improvements for search and face-recognition workflows. Currently as an Assistant Director in the Ministry of Home Affairs (GoI), I also apply hands-on expertise in prompt engineering, LLM evaluation, RAG pipeline design, and AI data annotation/training. Previously, I built production search and data infrastructure as an SDE at Amazon India, Microsoft India, and Glance InMobi, and I enjoy mentoring and teaching—skills shaped through tutoring and interview preparation support for competitive government technical recruitment.

Chander Shekhar

AI Prompt Engineer, AI Engineer, AI Trainer, +3

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I’m Chander Shekhar, a technologist and public servant with 14+ years of experience blending large-scale AI/ML, LLM & RAG systems, and distributed systems with government administrative leadership. I’ve led modernization initiatives across vector search, ANN benchmarking, and low-latency retrieval pipelines—turning hard production constraints into measurable improvements for search and face-recognition workflows. Currently as an Assistant Director in the Ministry of Home Affairs (GoI), I also apply hands-on expertise in prompt engineering, LLM evaluation, RAG pipeline design, and AI data annotation/training. Previously, I built production search and data infrastructure as an SDE at Amazon India, Microsoft India, and Glance InMobi, and I enjoy mentoring and teaching—skills shaped through tutoring and interview preparation support for competitive government technical recruitment.…I’m Chander Shekhar, a technologist and public servant with 14+ years of experience blending large-scale AI/ML, LLM & RAG systems, and distributed systems with government administrative leadership. I’ve led modernization initiatives across vector search, ANN benchmarking, and low-latency retrieval pipelines—turning hard production constraints into measurable improvements for search and face-recognition workflows. Currently as an Assistant Director in the Ministry of Home Affairs (GoI), I also apply hands-on expertise in prompt engineering, LLM evaluation, RAG pipeline design, and AI data annotation/training. Previously, I built production search and data infrastructure as an SDE at Amazon India, Microsoft India, and Glance InMobi, and I enjoy mentoring and teaching—skills shaped through tutoring and interview preparation support for competitive government technical recruitment.

Available to hire

I’m Chander Shekhar, a technologist and public servant with 14+ years of experience blending large-scale AI/ML, LLM & RAG systems, and distributed systems with government administrative leadership. I’ve led modernization initiatives across vector search, ANN benchmarking, and low-latency retrieval pipelines—turning hard production constraints into measurable improvements for search and face-recognition workflows.

Currently as an Assistant Director in the Ministry of Home Affairs (GoI), I also apply hands-on expertise in prompt engineering, LLM evaluation, RAG pipeline design, and AI data annotation/training. Previously, I built production search and data infrastructure as an SDE at Amazon India, Microsoft India, and Glance InMobi, and I enjoy mentoring and teaching—skills shaped through tutoring and interview preparation support for competitive government technical recruitment.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Advanced

Hindi

Advanced

Work Experience

Assistant Director (Admin & Security) at Ministry of Home Affairs (GoI), Government of India

October 1, 2025 - Present

Technical & data leadership within government, handling administrative and security functions while driving an AI modernization flagship initiative spanning vector-search, RAG, and LLM-based retrieval (Milvus, HNSW, FastAPI, prompt engineering, LLM-assisted evaluation) in support of government workflows.

Assistant Director (Admin & Security) at Ministry of Home Affairs (GoI)

October 1, 2025 - Present

Technical and data leadership in government administration and security functions, driving RAG/vector-search/LLM modernization work as a flagship initiative (Milvus, HNSW, FastAPI, prompt engineering, LLM-assisted evaluation) layered over core administrative duties.

District Informatics Officer at National Informatics Centre (NIC), Govt. of India

April 1, 2025 - November 1, 2025

Managed district-level e-governance initiatives for Solan, Himachal Pradesh, overseeing IT infrastructure and citizen-service delivery; explored applied ML/LLM and vector-search based tooling within government technology functions.

Additional District Informatics Officer at National Informatics Centre (NIC), Govt. of India

July 1, 2024 - April 1, 2025

Supported district-level IT and data infrastructure for Reckong Peo, Kinnaur, Himachal Pradesh; focused on data architecture and engineering data-management functions that enabled later vector-DB/RAG based search modernization work.

AI Trainer / LLM Data Annotator (Freelance, Remote) at Handshake AI, Mercor, Outlier

January 1, 2024 - Present

Trained and evaluated LLM outputs by producing and reviewing high-quality training/evaluation data for RLHF-style human-feedback pipelines; ranked, rewrote, and assessed responses for correctness, reasoning quality, and helpfulness—also reviewing technical coding tasks and structured-reasoning datasets.

AI Trainer / LLM Data Annotator at Handshake AI, Mercor, Outlier (Freelance, Remote)

January 1, 2024 - Present

Provided LLM training and evaluation data by ranking, rewriting, and assessing responses for correctness, reasoning quality, and helpfulness; contributed structured prompt-engineering and RLHF-style human-feedback dataset work, including review of technical/coding and structured-reasoning tasks.

Data Engineering SDE at Glance InMobi

February 1, 2022 - September 1, 2023

Built production data ingestion and orchestration using Airflow DAGs for user-segment onboarding and processing; set up staging ETL pipelines for safe Dev/QA validation; created summary/business reporting tables from Hive to enable quick analytics for business teams.

SDE - I at Amazon India

July 1, 2020 - February 1, 2022

Delivered marketplace product and search improvements, including the Compatible Accessories widget using KNN on AWS EMR/S3/SageMaker/Step Functions/Lambda; created an orchestration package for widget theme rollouts; implemented text nominalisation for search relevance matching; developed a Kindle Image Controller widget using Java Spring MVC.

SDE - I at Amazon India (FAANG)

July 1, 2020 - February 1, 2022

Delivered marketplace widget features using KNN-based ranking and orchestration patterns; implemented compatible accessories widget for IN Marketplace via AWS services; improved search relevance with text nominalisation work that later extended toward semantic/vector search; built Kindle image controller widget using Java Spring MVC.

SDE - Intern at Microsoft India

May 1, 2019 - July 1, 2019

Worked on a Virtual Filtering Platform, improving response time between two machines by using network diagnostics and monitoring tools.

Freelance Tutor / Educator (Remote) at Chegg

July 1, 2014 - May 1, 2019

Taught and mentored students in ML, AI, and software engineering fundamentals; broke down DSA/ML concepts into structured explanations and guided learners through applied problem-solving.

Customer Service Representative at Tech Mahindra

June 1, 2012 - July 1, 2014

Provided client communication and problem-solving in a BPO environment, consistently achieving strong customer satisfaction through active listening, clear verbal articulation, patience, and process discipline.