Data Science Professional

BT Group; Bengaluru; On-site; INR 1,400,000 - 2,100,000; Full time

Job summary

BT Group in Bengaluru is seeking a Data Science professional to build and own AI service features on the Mind.AI platform. You will work under the Lead AI Engineer to deliver production-grade implementations including chunking, guardrails, embedding pipelines and RAGAS metric computation.

You will manage end-to-end lifecycle from experiment to production, ship with tests, and benchmark performance to meet quality bar. This role emphasises independence and scalable enterprise AI delivery.

Qualifications

• Experience with distributed systems and microservices
• Experience building AI agents using LangChain and LangGraph
• Strong Python, FastAPI, and AI/ML stack skills
• Experience designing Retrieval-Augmented Generation (RAG) solutions
• Knowledge of AI safety, evaluation and red-teaming techniques
• Experience with PostgreSQL/pgvector/Redis and graph databases

Responsibilities

• Build and own AI service features within Mind.AI platform
• Develop RAG pipelines for accurate knowledge retrieval
• Implement document ingestion, embedding and retrieval workflows
• Design scalable AI memory frameworks and knowledge graph solutions
• Define AI evaluation metrics and testing frameworks
• Collaborate with platform, data and product teams to deliver enterprise AI solutions

Skills

Systems architecture

LangChain/Agentic AI

Python/AI stack

Retrieval & Search

Evaluation & safety

Data platforms

Tools

Kafka

NATS

FastAPI

Pydantic

Neo4j

Job description

Job Title: Data Science Professional
Req ID: 62277
Job Function: Software Engineering
Posting Start Date: 20/09/2026
Posting End Date: 25/09/2026
Division: Digital
Job Location: IND-Bengaluru-RMZ Ecoworld
Advertised Salary: Competitive
Job Req ID: 61588
Posting Date: 03 Sep 2026
Location: Bengaluru
Salary: Competitive

About The Role

You will build and own scoped AI service features within the Mind.AI platform. You work within the architecture set by the Lead AI Engineer, take feature specifications and deliver production-quality implementations: a chunking strategy module, a guardrail model integration, an embedding pipeline stage, a RAGAS metric computation job. You are expected to work independently within scope - take ownership, write tests, benchmark your work, and ship to the Lead's quality bar.

You have built ML or AI features in production before. You know that a model that scores well in a notebook evaluation is not done - it needs to be packaged, served, monitored, and maintained. You are comfortable with the full lifecycle from experiment to production deployment.

What You’ll Be Doing

• RAG & Knowledge Retrieval
• Build and optimise enterprise-grade RAG pipelines for accurate knowledge retrieval
• Develop document ingestion, indexing, embedding, and retrieval workflows
• Implement hybrid search, re-ranking, and citation-based response generation
• Improve retrieval quality, relevance, and scalability across large knowledge bases
• AI Safety & Guardrails
• Implement PII detection, data protection, and content redaction controls
• Integrate prompt injection, toxicity, and misuse detection mechanisms
• Build AI guardrails to ensure safe, compliant, and trustworthy responses
• Develop automated response quality and faithfulness evaluation frameworks
• Memory & Knowledge Management
• Design and implement long-term AI memory frameworks
• Build user, agent, and organisational knowledge retention capabilities
• Develop knowledge graph and graph-based retrieval solutions
• Optimise context management through intelligent summarisation and memory retrieval
• Evaluation & Optimisation
• Define and implement AI evaluation metrics and testing frameworks
• Create and maintain golden datasets for model validation
• Conduct experiments to improve retrieval, reasoning, and response quality
• Drive continuous performance optimisation through benchmarking and analytics
• Platform Engineering
• Design scalable, production-ready AI services and APIs
• Optimise latency, throughput, reliability, and cost of AI workloads
• Build monitoring, observability, and auditability for AI systems
• Collaborate with platform, data, and product teams to deliver enterprise AI solutions
• Agentic AI & Multi-Agent Systems
• Design and develop autonomous AI agents and multi-agent workflows
• Build orchestration frameworks for planning, reasoning, and task execution
• Implement agent memory, tool calling, and decision-making capabilities
• Enable enterprise-scale deployment, governance, and monitoring of agentic solutions

Essential Skills / Experience

• Systems Architecture Experience with distributed systems and microservices architecture. Knowledge of event-driven systems using Kafka and NATS. Skilled in REST APIs, real-time communication, API security, JWT, rate limiting, and resilience patterns.
• LLM Orchestration & Agentic AI Experience building AI agents using LangChain and LangGraph. Skilled in single-agent and multi-agent workflows, including ReAct, Planning, and Tool-Use patterns. Strong understanding of prompt engineering, context management, memory, and multi-LLM integration.
• Python & AI/ML Stack Strong programming skills in Python, FastAPI, and Pydantic. Experience with NLP and AI frameworks including SpaCy, Sentence Transformers, PyTorch, and Hugging Face. Knowledge of ONNX, LoRA/QLoRA fine-tuning, vLLM, LangChain, LangGraph, and RAGAS.
• Retrieval & Search Experience designing Retrieval-Augmented Generation (RAG) solutions. Skilled in document chunking, embeddings, vector databases, and Elasticsearch (BM25). Knowledge of hybrid search and cross-encoder re-ranking techniques.
• Evaluation, Safety & Responsible AI Experience with AI evaluation frameworks such as RAGAS and DeepEval. Skilled in benchmarking, LLM-as-a-Judge, and human-in-the-loop evaluation. Knowledge of AI safety, prompt injection prevention, red teaming, and industry safety benchmarks.
• Data Platforms Experience with PostgreSQL, pgvector, and Redis. Knowledge of Kafka for event streaming and data processing. Skilled in building and working with Neo4j knowledge graphs.

Desirable Skills / Experience

• Data Platforms & Infrastructure Experience working with ClickHouse for high-performance analytics and data processing. Knowledge of containerization and deployment using Docker and Kubernetes. Skilled in building and managing scalable and cloud-native infrastructure.
• Observability & MLOps Experience with OpenTelemetry, Dynatrace, and MLflow for monitoring and model management. Skilled in implementing observability through logging, monitoring, and distributed tracing. Knowledge of performance optimization, model tracking, and operationalizing AI/ML workloads.

BT is the UK’s leading communications group and the holding company behind some of the country’s most recognised brands – including BT, EE, Openreach and Plusnet.

Our purpose is as simple as it is ambitious: we connect for good. Our customers include consumers, small, medium and large businesses, public sector organisations and other communications providers.

Having come through the most capital-intensive phase of our fibre investment, our focus now is on what comes next – simplifying how we operate, using technology and AI to work smarter, and organising ourselves to serve customers better and grow sustainably.

We have a singular culture that unites all our people: we are customer-first challengers, who are committed, clear and connected. These behaviours unite us as one team to deliver for our colleagues, our customers, our stakeholders and the country. Joining BT means working at the heart of a business that matters to the UK, with the opportunity to shape decisions, influence outcomes and help set the future course of one of the country’s most important companies.