Our portfolio companies are always looking for great people. Apply to the opportunities below or send us your profile.

Backend Engineer, Pass at Citymapper
London, GB


Citymapper makes cities usable, helping people move through our urban spaces, getting people from A to B.

At less than a year old, Citymapper Pass is a natural next step for the world’s best transport app - solving ticketing. Urban mobility is changing and Pass offers a weekly subscription covering all modes of transport in a city; simplifying booking and payment across public and private transit.


You will help us build better user experiences around paying for your daily commute, scale and secure infrastructure for a growing user base, explore the byzantine charging patterns of TfL, and help expand Pass to a global audience.

This role means trying to answer questions like:

  • what could be better about paying for the tube every day?
  • how can we programmatically enforce a consistent transaction ledger?
  • how do we make sure payments always succeed?
  • can we drive a change in behaviour when the user is not in the app?
  • what’s a sensible infrastructure where determinism is more important than latency?
  • how do we ship quickly without compromising on reliability and predictability?
  • is get-me-home green better than hot coral?

Whether you are junior, senior, or Margaret Hamilton, you will:

  • write Python 3 code and tests
  • deploy and support your code on AWS
  • support and be supported by an incredibly welcoming team
  • design and implement features of all sizes, from a blinking home screen indicator to a Payment Services Directive 2 compliant user authentication flow
  • work side-by-side with talented software engineers, product designers, data scientists, and customer support operatives on a day-to-day basis
  • learn and grow at a dizzying pace
  • teach us how to be better


Ultimately we don’t have hard requirements beyond needing you to be smart, curious, and keen to get stuck in.


Our stack

  • Tech: Mostly Python 3, AWS Lambda, EC2 and RDS
  • Tooling: GitHub, AWS, SQL, Linux
  • Best practices: code reviews, tests, CI


  • Competitive pay
  • Meaningful equity / stock options
  • Working in a not-too-big, diverse engineering team
  • Influence over the product that you and your friends use every day
  • Working on something meaningful - help to make cities usable
  • Opportunity to travel to our 40+ cities to help us make the app even better
  • Perks like dinner every night and regular team events
  • Support to find the next step in your career, whether it’s an incremental improvement or an ambitious leap forward
  • Arcane public transport knowledge with which to dazzle your friends

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