Senior Engineer

Duffel
London
Workplace: HybridFull timeFunction: Solutions Engineering & Sales EngineeringSkills: ["Mentorship","Structured communication","Independent problem-solving","Collaboration","Stakeholder management"]

Build and evolve a core travel API used by millions of bookings. Work hands-on with a London team to design world-class APIs, integrate with many travel providers, and shape technical decisions across teams. Tackle ambiguous problems, translate them into clear plans, and maintain quality standards. Use strong engineering fundamentals while working with Elixir, Phoenix, Kubernetes, and Google Cloud Platform.

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Duffel
Duffel
2 days ago

Senior Engineer

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Source: Company careers pageValidated by: Fursa AI
Last checked: 7 hours agoStatus: Live

Job Summary

Build and evolve a core travel API used by millions of bookings. Work hands-on with a London team to design world-class APIs, integrate with many travel providers, and shape technical decisions across teams. Tackle ambiguous problems, translate them into clear plans, and maintain quality standards. Use strong engineering fundamentals while working with Elixir, Phoenix, Kubernetes, and Google Cloud Platform.
Location: London
Workplace: Hybrid
Employment Type: Full time
Job Function: Solutions Engineering & Sales Engineering
Seniority: Mid level

Key Responsibilities

  • •Design a world-class travel API and define what gets built and how
  • •Integrate the API with a wide range of travel provider systems and requirements
  • •Take ambiguous problems and turn them into clear technical plans
  • •Shape technical decisions across teams and set quality standards for others to follow
  • •Communicate work and tradeoffs clearly to internal and external stakeholders

Pay and Benefits

Equity and Bonus:Equity
Perks:EquityHealth InsuranceRemote WorkTravel AllowanceParental LeaveSabbatical

Key Requirements

  • •Designed and shipped APIs at scale with a clear point of view on what makes a great API
  • •Turn loosely-defined problems into clear technical plans independently, balancing technical rigour with business impact
  • •Systems thinking to trace how decisions ripple across the stack and account for knock-on effects
  • •Stay hands-on writing production code and iterate long-term rather than moving to only leadership early
  • •Mentor engineers and help others reach the quality bar you set for yourself
Experience:APIsTravel
Skills:MentorshipStructured communicationIndependent problem-solvingCollaborationStakeholder management
Tech Stack:ElixirPhoenixKubernetesGoogle Cloud Platform

Company Brief

Duffel
Provides a developer-first platform and API for booking flights and travel inventory, enabling businesses to search, book, and manage airline content through a single integration.
Industry: API Platforms
Company Size: Large (251 to 1,000 employees)
Growth: Scaleup
Headquarters: London, United Kingdom
Founded: 2016
Website