Senior AI Engineer, Duffel

• 💼 Experience: Senior
• You'll probably have experience across many (but not necessarily all) of the following:
• Significant experience designing and shipping production AI systems, agentic workflows or LLM-powered products
• Experience building AI infrastructure such as orchestration frameworks, retrieval systems, evaluation pipelines or memory architectures
• Strong software engineering fundamentals and the ability to design scalable, reliable systems regardless of language or framework. You'll work across our stack as needed (Elixir on the backend and TypeScript on the frontend)
• Experience taking ambiguous technical problems from zero to one and influencing technical direction across teams
• Strong judgement when balancing experimentation with long-term platform investment
• Excellent communication skills and the ability to explain complex technical decisions to both technical and non-technical audiences
• A collaborative mindset with a passion for solving difficult engineering challenges alongside others

Desirable

• 🕒 Permanent | Start ASAP
• Build the AI platform: Design, build and own the core platform that powers AI at Duffel. You'll develop the orchestration engine, runtime and reusable primitives that allow intelligent agents to reason, plan and safely take actions across our products
• Define how AI is built at Duffel: Shape the technical direction for AI across the company. You'll establish engineering patterns, development workflows and best practices that future AI systems and engineers will build upon
• Build trustworthy AI: Design retrieval, grounding and evaluation systems that ensure our agents are accurate, reliable and continuously improving. You'll help us measure AI quality through robust evaluation frameworks rather than intuition alone
• Create long-term AI capabilities: Lay the foundations for memory and personalisation, building reusable customer context and optimisation loops that allow agents to become increasingly helpful while remaining predictable and safe
• Ship intelligent AI products: Design and build production AI agents that solve real customer problems, reasoning over complex travel workflows and safely interacting with Duffel's APIs
• Raise the engineering bar: Work closely with engineers across the business, influencing architecture, mentoring others and helping establish Duffel's long-term AI strategy
• Why this role?
• You'll be building systems that operate against live travel bookings, payments and customer interactions where correctness, trust, latency and reliability matter. Your work won't just power one assistant—it will define the AI foundations used across future Duffel products
• This is an opportunity to help shape the future of AI at Duffel from the ground up

• Our interview process consists of three stages: a recruiter screen, a hiring manager interview, and a final stage interview
• If you are successful, all offers will be pending satisfactory background checks (we partner with a third-party provider to do so) and employment references