Cloud Architect

TCS is a purpose-led transformation company, built on belief. We do not just help businesses to transform through technology. We support them in making a meaningful difference to the people and communities they serve - our clients include some of the biggest brands in the UK and worldwide. For you, it means more to make an impact that matters, through challenging projects which demand ambitious innovation and thought leadership.

• Build strong relationships with a diverse range of stakeholders.
• Gain access to endless learning opportunities.
• Work closely with the range of teams within the business to bring products to life., As an AWS Generative AI Architect you will be responsible for defining the end-to-end architecture, reference designs, and governance for Generative AI solutions across voice and chat channels. This role partners with product owners, security, data, and engineering teams to translate business outcomes into scalable, secure, and cost-optimised architectures on AWS, accelerating delivery of conversational AI products using Amazon Bedrock, agentic frameworks, and retrieval-augmented generation (RAG) patterns., * Own the target-state architecture for GenAI products (voice and chat), including multi-account strategy, landing zone alignment, network patterns, and environment segregation (dev/test/prod).
• Define reference architectures for Amazon Bedrock, model orchestration, RAG, tool/function calling, and agentic workflows (e.g., LangChain/LangGraph/CrewAI/Strands-style patterns) with clear guardrails.
• Design enterprise-grade knowledge architectures: ingestion pipelines, chunking strategies, embedding/model choices, vector stores, metadata/ACL strategy, and evaluation loops to improve retrieval quality.
• Architect APIs and integration layers for GenAI agents (API Gateway/ALB, VPC integration, event-driven patterns), including connectivity to external systems and MCP-style tool servers where applicable.
• Establish security, privacy, and compliance-by-design: IAM least privilege, KMS encryption, secrets management, data classification, PII redaction, prompt/response filtering, and model governance.
• Drive non-functional requirements: reliability, scalability, latency, observability, DR, and cost controls (FinOps) for GenAI workloads.
• Guide build teams through solution design, reviews, and implementation; produce architecture artefacts (HLD/LLD), patterns, and decision records; mentor developers and engineers.
• Define evaluation and monitoring strategy: offline test sets, automated regression, hallucination detection, safety metrics, guardrail effectiveness, and production telemetry.
• Support stakeholder engagement and client-facing workshops to shape roadmaps, prioritise use cases, and align on success criteria

• Strong hands-on architecting experience with AWS, including Well-Architected Framework, multi-account design, networking, and security patterns.
• Deep understanding of LLM concepts (prompting, tool use, retrieval, grounding, evaluation) and GenAI risk controls (hallucination, toxicity, PII leakage, prompt injection).
• RAG architecture expertise: data ingestion, embeddings, vector search, re-ranking, response synthesis, and continuous improvement using feedback signals.
• API and integration design experience, including event-driven architectures and secure connectivity to enterprise systems.
• Proficiency in one or more languages (Python/Node.js preferred) and infrastructure-as-code (CDK/CloudFormation/Terraform) for repeatable deployments.
• Experience setting up observability for GenAI: tracing, logging, metrics, and model/application performance dashboards.
• Excellent communication skills for architecture storytelling, stakeholder management, and client-facing workshops.

TCS is consistently voted a Top Employer in the UK and globally. Our competitive salary packages feature pension, health care, life assurance, laptop, phone, access to extensive training resources and discounts within the larger Tata network.

Tata Consultancy Services UK&I is committed to meeting the accessibility needs of all individuals in accordance with the UK Equality Act 2010 and the UK Human Rights Act 1998.

We believe in building and sustaining a culture of equity and belonging where everyone can thrive. Our diversity and inclusion motto is Inclusion without Exception’. Our continued commitment to Culture and Diversity is reflected across our workforce implemented through equitable workplace policies and processes.

You’ll find a welcoming culture and many internal volunteering and social networks to join (these are optional). Our diversity, inclusion and social activities include 12 employee networks such as gender diversity, LGBTQIA+ & Allies, mental health, disability & neurodiversity inclusion and many more, as well as health & wellness initiatives and sports events and we sponsor the London Marathon.