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ZT

AI Practice Lead

Zensar Technologies

Salary undisclosed

London, United KingdomFull-timeOn-siteProficient

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Description

AI Engineering

Two capabilities that do not come free with an engineering background. These are the ones we probe hardest.

Evaluation and Error Analysis

  • You have built an eval set for a non-deterministic system and used it to make a decision

  • You can decompose a failure: is this a model problem, a retrieval problem, a data problem or a product problem?

  • You debug agent behaviour systematically, with traces and evidence, not by gut feel

Context Engineering

  • Deliberate management of what enters the model on each turn, and why

  • Memory strategy: what persists across steps, across sessions, and what should not

  • Tool surface design: what the agent can reach, how it is scoped, what happens when a tool fails

  • Cost and latency as first-class design constraints, not something discovered in the invoice

 

Consulting and Client Leadership

Equal weight to the engineering. This is a client-facing role in a services business.

  • Carry a market point of view on models, tooling and delivery patterns, and translate it into what it means for a specific client, in their language

  • Run discovery workshops, solution reviews and delivery cadences with client teams

  • Advise clients on standing up their own AI capability: practice structure, operating model, skills, governance, build versus buy, and adoption across their engineering org

  • Shape and defend technical proposals, PoC plans and roadmaps. Own the story end to end

  • Translate business problems into architectures for CXO-level stakeholders without hiding behind jargon

  • Say no when the answer is no. Tell a client when agents are the wrong tool, and be able to explain why

Delivery and Architecture

The work itself.

  • Own end-to-end delivery of AI-native programs, from architecture through production

  • Design multi-agent orchestration using LangGraph, CrewAI or equivalent. Agent topology, tool routing, memory, state, fallback and recovery paths

  • Integrate agent systems with enterprise systems of record, not toy datasets

  • Build RAG where RAG is the right answer, from chunking through retrieval, re-ranking and evaluation

  • Run agentic coding workflows with Claude Code, Cursor, Codex or equivalent, and lead projects where AI writes significant portions of the codebase while you guide, review and ship it

  • Work with MCP and shared-context tooling. Design what agents are permitted to reach and under what controls

  • Bring governance into the design from day one: agent identity, privilege scoping, audit, human-in-the-loop, kill switches

  • Contribute to reusable frameworks and accelerators the wider practice can use

Team and Practice

  • Build AI engineering capability across the delivery organisation through mentoring, standards and review quality

  • Evaluate new models, frameworks and tooling before the hype catches up, and kill the ones that do not earn their place

  • Contribute to internal knowledge bases and practice assets

Qualifications

What We Are Not Looking For

  • Someone who lists LLMs on a resume but has only called the API in a notebook

  • People who explain everything in terms of frameworks they have never deployed

  • Consultants who can only narrate what others have built

  • Engineers who cannot hold a client conversation, and client-facing people who cannot build

How We Will Evaluate You

Stage 0, System design with no AI.  A distributed systems problem with no LLM in it. Event flow, data model, failure handling, scale. Twenty-five minutes.

Stage 1, Technical screen.  Walk us through a system you built. Bring an artifact: an eval set, a trace from a run that failed, a postmortem, a cost-per-task number. Something real, not slides.

Stage 2, Architecture discussion.  A business problem, live. Design the solution and defend the trade-offs, including the decision not to use agents.

Stage 3, Client simulation.  Present your approach to a non-technical executive audience, then advise them on how to build the capability internally.

At Zensar, we’re “experience-led everything”. We are committed to conceptualizing, designing, engineering, marketing, and managing digital solutions and experiences for over 130 leading enterprises. We are a company driven by a bold purpose: Together, we shape experiences for better futures. Whether for our clients, our people, or the world around us, this belief powers everything we do. At the heart of our culture is ONE with Client - a set of four core values that reflect who we are and how we work: One Zensar, Nurturing, Empowering, and Client Focus.

Part of the $4.8 billion RPG Group, we’re a community of 10,000+ innovators across 30+ global locations, including Milpitas, Seattle, Princeton, Cape Town, London, Zurich, Singapore, and Mexico City. Explore Life at Zensar and join us to Grow. Own. Achieve. Learn. to be the best version of yourself.

We believe the best work happens when individuality is celebrated, growth is encouraged, and well-being is prioritized. We are an equal employment opportunity (EEO) and affirmative action employer, committed to creating an inclusive workplace. All qualified applicants will be considered without regard to race, creed, color, ancestry, religion, sex, national origin, citizenship, age, sexual orientation, gender identity, disability, marital status, family medical leave status, or protected veteran status.

About this role

Zensar is seeking an AI Practice Lead to own end-to-end delivery of AI systems for enterprise clients while building consulting capability across the organization. You'll split your time between hands-on engineering and client-facing strategy: designing multi-agent architectures with tools like LangGraph, integrating RAG and agentic workflows into production systems, and translating business problems into technical roadmaps for executive stakeholders. This is a services role, so you'll run discovery workshops, advise clients on building their own AI capabilities, and know when to recommend against agents entirely.

The role demands rare depth in both directions. On the engineering side, you need to have actually built eval sets for non-deterministic systems, debugged agent behavior with traces and evidence, and managed context engineering as a deliberate design constraint—not just called APIs in notebooks. On the consulting side, you need to hold your own in client conversations, shape proposals end to end, and translate between technical architecture and CXO language without jargon. You'll also mentor the wider practice, evaluate new tools before hype peaks, and contribute reusable frameworks.

Zensar will assess you across four stages: a distributed systems design problem, a technical screen where you bring real artifacts (eval sets, failure traces, cost numbers), an architecture discussion defending trade-offs, and a client simulation where you present to non-technical executives then advise on capability building. This is in-office in London, full-time, and part of a 10,000-person organization within the RPG Group.

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