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Senior AI Platform Engineer

Job in City of Westminster, Central London, Greater London, England, UK
Listing for: Janus Henderson
Full Time position
Listed on 2026-09-22
Job specializations:
  • IT/Tech
    AI Engineer (Applied/Software)
Salary/Wage Range or Industry Benchmark: 85000 - 130000 GBP Yearly GBP 85000.00 130000.00 YEAR
Job Description & How to Apply Below

Engineer and operate the AI tooling estate

Run the model gateway and onboard AI software
  • Engineer and operate the AI Team's model gateway and routes to hosted and external model providers, managing integrations, credentials, quotas, routing rules, fallback, and rate limits.
  • Implement identity, role-based access, entitlements, and secure secret handling with enterprise IAM and AI Security, and monitor availability, latency, errors, usage, and policy breaches with auditable records of model access, decisions, and costs.
  • With AI Security and AI Governance Implementation, establish a risk-based process for evaluating and onboarding new AI products, model providers, versions, and platform features, leading the technical discovery, pilots, and production-readiness reviews, and distinguishing routine upgrades from materially new or higher-risk capabilities.
  • Work with AI Architecture on buy-versus-build decisions and encode approved controls into the platform.
Administer and deploy our Copilot services
  • Act as service owner and administrator for Microsoft 365 Copilot, Git Hub Copilot, and Copilot Studio, controlling every administrative setting and policy through delegated administrator roles in the tenants Central Technology operates.
  • Own the deployment plan: licence assignment, cohort sequencing, environment and connector strategy, agent publishing routes, and the order in which capability reaches each part of the firm.
  • Define the Copilot roadmap with the Principal AI Architect and AI Security, deciding which vendor features are made available and to whom, and staging capability until the required controls are evidenced.
  • Govern the Copilot Studio maker experience - environments, data-loss-prevention policies, connectors, and publishing approval - so business users build agents inside agreed guardrails.
Own telemetry, token budgets, licences, and vendors
  • Own and maintain the usage, cost, and token telemetry across every AI system - the model gateway, Copilot services, Azure AI Foundry, and external providers - so consumption is attributed consistently to users, teams, agents, applications, and providers, and keep it accurate as the estate changes.
  • Administer token budgets at the granularity the firm needs, whether by user, team, agent, application, or use case. Set, adjust, and enforce allowances through quotas, alerts, and access boundaries, and give budget owners the visibility to manage their own consumption.
  • Report on adoption, licence take-up, spend, and service quality in enough detail to support funding decisions, and identify underused licences and duplicated products.
  • Act as technical owner for AI software vendors, supporting selection, due diligence, licensing, renewals, and exit planning with Procurement, Legal, TPRM, and Finance, and track vendor roadmaps, deprecations, and security advisories.
  • Work alongside Percepta and other delivery partners while new platforms are built, and accept platforms into service only when ownership and controls are clear.
  • Partner with AI Engineering and Forward Deployed Engineering so teams self-serve approved tools and models; with AI Governance Implementation, Risk, and AI Security to turn policy into automated controls; with AI Architecture to stay aligned to the target architecture; and with the AI Enablement Partners so training matches what the platform permits.
What to expect when you join our firm
  • Hybrid working and reasonable accommodations
  • Generous Holiday policies
  • Excellent Health and Wellbeing benefits including corporate membership to Wellhub
  • Paid volunteer time to step away from your desk and into the community
  • Support to grow through professional development courses, tuition/qualification reimbursement and more
  • Maternal/paternal leave benefits and family services
  • All employee events including networking opportunities and social activities
  • Lunch allowance for use within our subsidized onsite canteen
    At least five years in platform engineering, software engineering, Dev Ops, SRE, or cloud engineering, including building and operating shared services used by multiple teams.
Nice to have skills
  • Azure AI Foundry, Azure OpenAI, Anthropic Claude, Microsoft 365 Copilot, Git Hub Copilot, or Microsoft Copilot Studio.
  • Microsoft 365, Entra , Purview, and Power Platform administration, including admin-centre configuration, data-loss-prevention policies, and environment strategy.
  • Experience building or operating an AI gateway, inference-routing layer, or multi-provider model platform.
  • Terraform, Docker,…
Position Requirements
10+ Years work experience
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