Plain

Senior Product Engineer (AI)

Plain
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10 months ago
London, United KingdomSenior

Responsibilities

  • Own and ship AI features including agents, assistants, and insights from concept to production.
  • Design and implement backend services for AI integrations and data pipelines.
  • Build APIs and abstractions for internal AI usage.
  • Improve scalability through caching, optimization, and processing patterns.
  • Evolve AI infrastructure, architecture, evaluation, and iteration pipelines.
  • Solve AI accuracy, reliability, and quality challenges using quantitative approaches.
  • Advocate for Plain’s AI work through writing, speaking, and engagement with the broader AI community.

Requirements

  • Experienced backend engineer who has shipped applied AI products, particularly text- and data-heavy applications.
  • Hands-on experience with LLM orchestration and LLM API optimization for cost and latency.
  • Familiarity with RAG architectures and technologies.
  • Experience with AI observability and measuring product impact.
  • Product-minded and customer-focused approach to software development.
  • Ability to work independently and take ownership in a fast-moving, ambiguous startup environment.
  • Experience with agent frameworks and design is a bonus.
  • Academic or research-focused ML/AI experience alone is not the intended background; the role seeks applied AI experience.
  • This is a hands-on individual contributor role rather than a management position.

Benefits

  • Hybrid work arrangement with three days per week in the London office.
  • Competitive compensation for the company’s startup stage.

Tech Stack

Categories

AI ApplicationsProduct Engineering
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