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Senior Data Scientist (IN)

Reads like an AI Engineer role: building products on existing AI models.

Pay
Pay not listed
Work setting
Not stated
Employment
Not stated

What you’ll work on

Full posting
  • Implement RAG pipelines with retrieval, reranking, chunking and vector DBs

  • Build MCP servers and tools that connect agents to APIs and knowledge bases

  • Set up LangSmith tracing, automated evaluations and regression testing

  • Apply classical ML models, feature engineering and hyperparameter tuning

From the employer’s posting
Implement RAG architectures with:
Implement MCP servers for external tool connectivity.
Use LangSmith for tracing, automated evaluations, regression testing
Conduct feature engineering, model selection, hyperparameter tuning.

What you’ll bring

All qualifications

Core experience

  • 5–10 years total experience, with 2–4+ years hands-on GenAI
  • Hands-on with LangChain, LangGraph and LangSmith
  • Strong Python coding
  • Classical ML foundations such as tree models and regression
  • Experience with LLM APIs or open-source LLMs
Qualification wording
5–10 years total experience, with 2–4+ years hands-on GenAI
LangChain, LangGraph LangSmith (tracing, metrics, evaluations)
Strong coding expertise in Python.
Classical ML foundations (tree models, regression, etc.).
Experience working with LLM APIs and/or open-source LLMs.
Apply at HCL Technologies

Posting record

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Actively hiringFirst seen by us 1 day ago, still listed, and not a repost of an earlier posting.

Status in our records
Live
First seen by us
Nov 12, 20261 day ago
Recorded sightings
2
Last seen by us
Nov 13, 2026

These dates show when we found the posting. Check the employer’s website to confirm it is still accepting applications.

How this job compares

Time since we first saw it

Day 1

Early. Similar jobs usually come down between day 4 and day 77.

From 51 similar postings that came down. Coming down is not always a hire.

HCL Technologies is hiring

357 open jobs

Open jobs by the week we first saw them, last 12 weeks.

  • 1% of open jobs were reposted
Hiring record

See how this role fits your experience

Add your resume and we’ll mark which of these tools you already use, and point out anything in the posting that could rule you out.

  • Python
  • AWS
  • Azure
  • Databricks
Where the posting names them
- RAG patterns and vector databases - Strong coding expertise in Python. - Classical ML foundations (tree models, regression, etc.).
- ML Modelling, data drift, concept drift, model quality monitoring. - Hands‑on experience across AWS/ Azure/ Databricks, with flexibility to work on any cloud platform. - Adhere to stringent quality assurance and documentation standards using version control and code repositories (e.g., Git, GitHub, Markdown)
- Experience building and debugging production-quality GenAI pipelines. - Aws/azure - GIT Ops

Your next step

Complete your application on careers.hcltech.com. The employer’s form will show what is required.

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Has HCL Technologies posted this job before?

Yes. We’ve followed 4 other Senior Data Scientist (IN) jobs there since November 2026. All 4 are still up.

  1. Place not statedStill up after 1 day, first seen Nov 12
  2. Place not statedStill up after 1 day, first seen Nov 12
  3. Place not statedStill up after 1 day, first seen Nov 12
  4. Place not statedStill up after 1 day, first seen Nov 12
  5. This jobUp 1 day so far, first seen Nov 12

Large employers often post one title for several teams, so these can be separate openings.

About HCL Technologies

People
About 20,206 in 2024.Benefit plan filings (Form 5500)
Company
Listed as HCLTECH.NS.
H-1B visas
754 approved for new hires in fiscal 2025.US Citizenship and Immigration Services
Layoff notices
Notices this year and last cover 120 people. The latest was filed March 27, 2026.State WARN notices

Demand for AI Engineer roles

New AI Engineer postings at the employers we follow are up 134% over the last 6 weeks compared with the 6 before.

Weekly new AI Engineer postings at the same employers, from the week of August 17 to the week of November 2. The fewest in a week was 7, the most 65, and the latest week had 65.
August 17Last week

Each bar is one week of new postings. The darkest bars are the last 6 weeks.

Counted from the hiring pages we’ve followed for at least five weeks, so employers we add don’t look like growth. Updated weekly.

About the role

We file this job under AI Engineer, by the work the posting describes.

AI engineers build products on top of AI models that already exist, most often large language models: they connect a model to a company's data and tools and ship the assistants, agents and search features people use.

Postings ask for strong Python or TypeScript, experience with model APIs, retrieval and agent frameworks, and ways to test whether the model's answers are good enough.

An ML engineer trains and serves models; an AI engineer usually starts from a model someone else trained and builds the product around it, though titles often mix the two.

Job description

View original posting ↗

Job Summary

This role demand strong GenAI experience, emerging mastery in Agentic AI Systems, and a good foundation in classical ML.

You will design and build intelligent, tool-using agents, multi-agent systems, RAG pipelines, and LLM-based applications leveraging the LangChain , LangGraph ecosystem, LangSmith for evaluation.

Key Responsibilities

This role demand strong GenAI experience, emerging mastery in Agentic AI Systems, and a good foundation in classical ML.

You will design and build intelligent, tool-using agents, multi-agent systems, RAG pipelines, and LLM-based applications leveraging the LangChain , LangGraph ecosystem, LangSmith for evaluation.

Key Responsibilities

1. GenAI / LLM Application Development

  • Build GenAI applications using:
    • LangChain, LangGraph
  • Implement RAG architectures with:
    • Retrieval, reranking, chunking, memory strategies
    • Vector DBs (faiss, aisearch, opensearch, PG vector etc).
  • Design prompt-engineering strategies:
    • Instruction-following
    • ReAct (Reasoning + Acting)
    • Chain-of-thought structuring
    • Self-reflection and planning loops
  • Evaluation Strategy
    • Implement evaluation frameworks for Classical ML and GenAI systems, covering statistical validation, reliability, and robustness.
    • Assess LLM outputs, RAG pipelines, and agent workflows for grounding quality, relevance, and retrieval accuracy (e.g., recall@k, precision@k).
    • Use LangSmith for tracing, automated evaluations, regression testing, and continuous system‑level quality monitoring

2. Agentic System Architecture

  • Build agentic workflows:
    • Tool-calling agents
    • Planner–executor systems
    • Multi-agent communication systems
    • Hierarchical agent architectures
    • Deep Agents
  • Integrate memory systems:
    • episodic memory
    • semantic memory
    • vector-based long-term knowledge
  • Implement evaluation frameworks for agentic systems using LangSmith.

3. Model Context Protocol (MCP) & Tooling

  • Implement MCP servers for external tool connectivity.
  • Build tools that allow agents to interact with:
    • APIs
    • Code execution environments
    • Knowledge bases
    • Company applications

4. Classical ML (Foundational DS Skills)

  • Apply ML models to structured/unstructured data.
  • Conduct feature engineering, model selection, hyperparameter tuning.
  • Build interpretable models where required.

5. Engineering & Integration

  • Collaborate with backend engineering teams to seamlessly integrate agentic and GenAI systems into production applications.
  • Implement observability, tracing, and monitoring for GenAI workflows using LangSmith to ensure reliability and system‑level transparency.

6. Cloud ML-Ops & Quality

  • ML Modelling, data drift, concept drift, model quality monitoring.
  • Hands‑on experience across AWS/ Azure/ Databricks, with flexibility to work on any cloud platform.
  • Adhere to stringent quality assurance and documentation standards using version control and code repositories (e.g., Git, GitHub, Markdown)

Skill Requirements

Required Skills & Experience

  • 5–10 years total experience, with 2–4+ years hands-on GenAI.
  • Hands-on expertise with:
    • LangChain, LangGraph
    • LangSmith (tracing, metrics, evaluations)
    • MCP tooling and agent tool integration
    • ReAct, Tree of Thoughts, multi-agent orchestration
    • RAG patterns and vector databases
  • Strong coding expertise in Python.
  • Classical ML foundations (tree models, regression, etc.).
  • Experience working with LLM APIs and/or open-source LLMs.
  • Experience building and debugging production-quality GenAI pipelines.
  • Aws/azure
  • GIT Ops
  • Prior experience building complex multi-agent systems for real-world applications.
  • Knowledge of multi-modal LLMs (vision, speech, code).
  • Familiarity with structured evaluation of LLM systems (hallucination tests, safety assessments etc ).
  • Experience in enterprise-grade LLM deployments.

Other Requirements

BE or Equivalent degree

Source details

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India

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