Cognizant

AI System Engineer

Cognizant
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1 day ago
London, United KingdomSenior

Responsibilities

  • Design, build, and operate foundation-model, retrieval, and workflow services for operational product use cases.
  • Build retrieval and context pipelines, structured outputs, evidence references, and citation verification.
  • Implement multi-step workflows with human review, approval, escalation, and safe-failure or abstention paths.
  • Create evaluation datasets, automated tests, regression suites, and monitoring for task success, retrieval quality, source support, robustness, latency, cost, and regression.
  • Apply secure engineering controls for prompt injection, unsafe tool use, access-control failure, data leakage, unsupported claims, retrieval failure, and model or configuration degradation.
  • Collaborate with Platform Engineering on release, runtime, observability, support, and operational concerns.
  • Review supplier code and artefacts, maintain documentation, and transfer knowledge into permanent FCA ownership.
  • Translate stakeholder requirements into scalable, maintainable, and robust AI solutions.

Requirements

  • Strong Python and production software engineering experience, including APIs, automated testing, and cloud-native services.
  • Practical experience building and operating production applications using foundation models and LLM APIs, with strong prompt-engineering knowledge.
  • Experience with retrieval and embedding pipelines, semantic search, or equivalent AI data pipelines.
  • Experience evaluating and monitoring AI systems using golden datasets, regression suites, retrieval and citation quality measures, and human or automated evaluation.
  • Experience designing evidence-grounded, human-authorized workflows with explicit failure, abstention, and escalation behaviour.
  • Experience with data modelling, schema definition, and validation frameworks.
  • Working knowledge of AI failure modes and appropriate controls, including hallucination, retrieval drift, context failure, injection, and degradation.
  • Experience with version control, operational telemetry, secure engineering, access control, data-leakage prevention, and safe tool use.
  • Ability to communicate technical trade-offs, review supplier work, transfer knowledge, and translate non-technical business requirements into scalable solutions.
  • AWS and Bedrock or comparable cloud and foundation-model platform experience is particularly valuable.
  • Experience with OCR or multimodal foundation models, agent or DAG orchestration, event-driven systems, graph-enhanced retrieval, temporal or provenance models, and S3 metadata or annotation approaches is particularly valuable.
  • Experience in regulatory technology, financial services, or other controlled operational environments is particularly valuable.

Benefits

  • Build production-grade AI systems embedded in FCA regulatory workflows rather than standalone proofs of concept.
  • Gain hands-on experience with retrieval-augmented generation, agentic workflows, orchestration, evaluation frameworks, provenance, observability, and secure AI system design.
  • Help shape the safe and responsible application of AI within a major financial regulator.
  • Work alongside engineers, architects, product leads, and domain specialists on AI capabilities supporting Authorisations, Supervision, Enforcement, and AML activities.

Tech Stack

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Cognizant

About Cognizant

10,000+ employees

Cognizant is a public IT services and consulting firm that designs, builds, and runs enterprise technology, including digital engineering, cloud modernization, data/AI, and managed services. It sells consulting, systems integration, and outsourcing on multi-year engagements to large enterprises in healthcare, banking, retail, communications, and manufacturing. Founded in 1994 and headquartered in Teaneck, New Jersey, Cognizant is NASDAQ-listed (CTSH) and a Fortune 500 company.

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