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Plum

Staff AI Engineer

Plum

. Architect and design core AI platform components, including model orchestration, RAG, agentic workflows, prompt management and context management .

Posted 11/9/2026full-timeLondon • United KingdomLeadWebsite

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in architecting and designing AI platforms, particularly in LLM-powered systems, while ensuring compliance with regulated financial product standards. Proven ability to lead technical teams, mentor engineers, and translate complex business goals into actionable strategies.

Highest-signal resume keywords
LLM-Powered Systems DesignAI Evaluation MethodologyPython ProgrammingTechnical LeadershipPrompt Engineering

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills
Model OrchestrationAgentic WorkflowsRAGTool IntegrationRegression DetectionDistributed SystemsAPIsCloud InfrastructureFine-TuningCost and Latency Monitoring
Soft Skills
Planning and PrioritisationCommunicationConflict ResolutionSelf-MotivatedOrganisational Skills
Industry Keywords
Financial Product StandardsOperational ExcellenceArchitectural StandardsCross-Functional CollaborationSafety and Fairness Considerations

Tech Stack

Tools & technologies
CloudDistributed SystemsPython

About the role

Key responsibilities & impact
  • Architect and design core AI platform components, including model orchestration, RAG, agentic workflows, prompt management and context management
  • Lead end-to-end development of LLM-powered Wealth Advisor customer experiences
  • Design systems for tool integration, deployment, monitoring and production iteration
  • Build AI evaluation systems with golden datasets, LLM-as-judge grading, regression gates and offline-to-online metric correlation
  • Design guardrails, safety and observability layers, including tracing, cost and latency monitoring, content controls and action controls
  • Drive the AI strategic vision and roadmap
  • Evaluate emerging models, tools and techniques
  • Promote architectural standards, engineering best practices and operational excellence across teams
  • Mentor Senior Engineers and other team members
  • Identify root causes of model regressions and architectural bottlenecks
  • Develop short-term mitigations and long-term strategic resolutions
  • Partner with Staff Engineers, Product Managers, Data Scientists and Compliance
  • Design AI solutions that support growth while meeting regulated financial product standards

Requirements

What you’ll need
  • Proven track record of technical leadership
  • Experience designing, shipping and operating LLM-powered systems in production at scale
  • Hands-on experience with agentic systems, tool use, orchestration and multi-step planning
  • Experience with RAG and retrieval pipelines
  • Experience with prompt engineering
  • Experience with fine-tuning where it adds value
  • Rigorous AI evaluation methodology and regression detection
  • Strong software engineering fundamentals
  • Experience with Python, distributed systems, APIs and cloud infrastructure
  • Ability to balance model capability against cost, latency and reliability
  • Strong planning and prioritisation skills
  • Ability to translate business goals into actionable technical strategies
  • Ability to challenge product decisions with data
  • Ability to communicate complex technical, architectural and organisational challenges to technical and non-technical executives
  • Experience working within cross-functional and collaborative teams
  • Ability to facilitate technical decision-making and resolve conflicts across teams
  • Self-motivated and self-managing, with excellent organisational skills
  • Awareness of safety, fairness and regulatory considerations is a strong plus

Benefits

Comp & perks
  • Stock options
  • Private health insurance
  • Annual training budget
  • Plum Max subscription for yourself and Boost for 2 friends or family members
  • Referral scheme: earn competitive rewards up to 4k
  • Flexible approach to remote working
  • Team breakfasts and team lunches
  • 25 days holiday + bank holidays
  • 45 work-from-anywhere days
  • 2 weeks & 6 weeks sabbatical after 4 years and 8 years respectively
  • Enhanced parental leave
  • Wedding allowance
  • 1 paid volunteering day annually
  • Annual team trip
  • A fun, inclusive company culture