Senior Enterprise Architect-Enterprise Architect/Segment lead-UK

Role - Senior Enterprise Architect
Technology - Enterprise Architect/Segment lead
Location - UK/Europe
Business Unit - STG
Compensation - Competitive (including bonus)

Job Description

AI-First Solutioning, Human + Agent Ways of Working & Large-Scale Modernisation

Your role

This is a senior strategic role within the Enterprise Strategic Architecture practice, focused on defining and delivering next-generation digital transformation programs for leading global organisations. The successful candidate will bring together deep technology expertise and strong business acumen to help clients navigate complex, large-scale modernisation initiatives. As AI becomes central to how enterprises transform, this role is expanding in scope: the architect must be equally comfortable designing cloud-native platforms, structuring human and agent collaborative workflows, and embedding AI-driven capabilities as first-class components of the overall solution. You will collaborate closely with sales and delivery teams across the full program lifecycle - from shaping solutions during presales through to governing technical quality in delivery. You will engage with CDOs, CTOs, and senior digital leaders at client organisations, contribute to industry thinking through published viewpoints and speaking engagements, and play an active role in identifying emerging technology opportunities that can be developed into compelling propositions for the market.

Responsibilities .

• Strategic Thinking- Candidate can articulate where AI agents replace human tasks vs. augment them in a $10M+ transformation context. Can draw a human+agent operating model for a business process - showing handoff logic, oversight points, and accountability chains. Understands that LLM inference is now a line item in program budgets and can estimate it at ROM level for a given use case volume.

• Design Depth- Has personally designed or reviewed an agentic system in production - e.g. a multi-step reasoning pipeline, an autonomous code review agent, or a RAG-powered enterprise knowledge layer. Can explain prompt architecture decisions (system prompt structuring, context compression strategies, few-shot vs. zero-shot tradeoffs) and how these affect both quality and cost. Understands model selection tradeoffs - when to use frontier models vs. fine-tuned smaller models vs. cached completions.

• Token Optimization Fluency- Has operationalised token efficiency at scale - structured prompt libraries, semantic caching, chunk sizing for RAG pipelines, output length controls, batching strategies. Can model cost-per-transaction for an AI-enabled workflow and present that as part of a business case. Understands how token spend interacts with context window limits across model families (GPT-4o, Claude, Gemini) and can make architecture trade-offs accordingly.

Must Have skills

Agentic architecture design Multi-agent orchestration, tool-use design, human in-the-loop checkpoints, agent failure modes and recovery

Human + agent workflow design Task decomposition across human and AI agents; escalation paths; accountability mapping in regulated environments

Expertise in leveraging coding agents - GitHub Copilot, Claude, Devin.ai and similar - to accelerate software delivery within a structured, governed engineering lifecycle

Design and governance of automated delivery pipelines using tools such as Harness, GitHub Actions, ArgoCD and Tekton; trunk-based development, progressive delivery and release automation

Full-stack application development Architecture and delivery of modern full-stack applications; proficiency across frontend frameworks, API layers, backend services, and data tiers at enterprise scale

Modern CI/CD & delivery pipelines Design and governance of automated delivery pipelines using tools such as Harness, GitHub Actions, ArgoCD and Tekton; trunk-based development, progressive delivery and release automation

High-scalability integration Architecting event-driven and streaming integration at scale using Apache Kafka and Kafka Streams; asynchronous messaging patterns, schema registries, and real-time data pipelines across distributed systems

NoSQL & enterprise data platforms Design of polyglot persistence architectures spanning NoSQL stores (MongoDB, Cassandra, DynamoDB), enterprise caching layers (Redis, Hazelcast, Memcached) and search platforms (Elasticsearch, OpenSearch)

Hyperscaler resilience patterns Building highly available, fault-tolerant solutions on AWS, Azure and GCP - multi-region active/active, chaos engineering, SRE practices, availability zone failover, and disaster recovery at cloud scale

Token economics & LLM costing Prompt compression, context window sizing, model tier selection, cost-per-transaction modelling at enterprise scale

AI TCO & commercial modelling Inference cost projections, build-vs-buy for foundation models, ROI framing for AI-augmented delivery

Digital transformation leadership AI-native program design spanning cloud, integration, agentic capability layers and responsible AI governance

Enterprise integration patterns Streaming, API, event-driven and real-time patterns extending to RAG, vector stores, embedding services and LLM APIs as first-class integration nodes

Chief Architect leadership Governing cross-domain architect teams while managing AI risk, hallucination mitigation and responsible AI policy at program level

Multi-cloud architecture (15+ yrs) Hybrid IaaS/PaaS, multi-az/region, IaC automation first, DevSecOps, K8s orchestration

Influencing & stakeholder leadership Builds and sustains networks across organisational boundaries through credibility and influence rather than authority; aligns diverse stakeholders - engineering, business, and executive - around a shared technology direction and drives teams to deliver outcomes in complex, matrixed environments

CXO communication Articulates at the right level of abstraction and detail from developer to board level

Influencing & stakeholder leadership Builds and sustains networks across organisational boundaries through credibility and influence rather than authority; aligns diverse stakeholders - engineering, business, and executive - around a shared technology direction and drives teams to deliver outcomes in complex, matrixed environments

Preferred

• Should be excellent planner when it comes to perform release planning and other delivery planning.
• Should have excellent problem-solving skills
• Responsible for Coaching and mentoring team members
• BFSI/FS Domain exp

Personal
Besides the professional qualifications of the candidates we place great importance in addition to various forms personality profile. These include:

• High analytical skills
• High customer orientation
• High quality awareness

Why Infosys
Infosys is a global leader in next-generation digital services and consulting. We enable clients in more than 50 countries to navigate their digital transformation.
With over four decades of experience in managing the systems and workings of global enterprises, we expertly steer our clients through their digital journey. We do it by enabling the enterprise with an AI-powered core that helps prioritize the execution of change. We also empower the business with agile digital at scale to deliver unprecedented levels of performance and customer delight. Our always-on learning agenda drives their continuous improvement through building and transferring digital skills, expertise, and ideas from our innovation ecosystem.

"All aspects of employment at Infosys are based on merit, competence and performance. We are committed to embracing diversity and creating an inclusive environment for all employees. Infosys is proud to be an equal opportunity employer."

Client-provided location(s): London, United Kingdom

Job ID: Infosys-149014BR

Employment Type: OTHER

Posted: 2026-06-05T18:44:35