Senior Software Engineer

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

The Transport Data team is looking for a senior engineer to work on its systems handling public transport data: schedules, live status, disruptions, search, live traffic, vehicle positions, etc. (there’s always more stuff to plug in).

Without good transport data, specifically public transport timetables and realtime information, the Citymapper app would not exist. Transport data powers our cutting edge multimodal journey planner – renowned in complex cities with complex transport networks.

We offer the opportunity to build essential information for millions of users – letting them know when the next bus is arriving, which trains are disrupted, and what time they should leave to get home.

What you’ll do

Empower our city experts by building robust, reliable software for wrangling and debugging transport data
Collaborate with the product, apps and routing teams to improve how transport data is represented
Work on sophisticated challenges such as:

Monitoring transport data quality and discovering new ways to improve it
Finding novel ways to link disparate data from timetables, vehicle monitoring systems, users, and news sources
Building tools that manage local incidents and communicate with users about transport issues
Improve our processes for building, shipping and monitoring transport data

Fun projects we recently took on

Travelled to the Paris suburbs to integrate an obscure realtime API
Deployed a real time monitoring system to help commuters in Hong Kong navigate complex route diversions
Built a model railway in SQL to better understand New York Subway timetables

Requirements

We are currently looking for experienced / senior engineers to join the team to help us architect and build systems at scale. At least 4 years of professional experience within a similar setting is a must.

Attention to detail and experience wrangling data (especially transport data) is a plus.

Our stack

Tech: main language Python 3; For some projects we use Go, Java, C++
Tooling: GitHub, AWS, SQL, Linux
Best practices: code reviews, tests, CI

Benefits

We’re a genuinely hybrid company. Our employees have the choice of working from our headquarters on the south bank of the Thames in London, or from home – or a bit of both! We are open to remote work outside of the UK within +- 3 hours of London.

Competitive pay & meaningful equity / stock options
25 days’ annual leave plus bank holidays
Generous Family Leave policies for if/when you start a family
Free dinner in the office every day
Services to support your mental wellbeing
Cycle to work scheme
Pension scheme (we pay in, you pay in)
Conferences
Drinks and social events throughout the year
Citymapper swag

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