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EngineeringPosted 3 days ago

Senior Backend Engineer, Scheduling

Lumen books 1.4 million appointments a month for 3,200 practices. You will own the engine behind it: availability, rules, reminders and the moment a slot turns into a booking.

Location
Berlin, hybrid
Type
Full-time
Salary
€78k to €92k
Start
From January 2027

What you will do

  • Design and run the availability service that answers 900 requests a second
  • Turn practice rules like buffers, rooms and shared staff into clear, testable code
  • Pair with product design on features before a single line is written
  • Lead the on-call rotation for scheduling, one week in six

What you bring

  • Five or more years building backend systems in production
  • Good judgement about data models that will still make sense in three years
  • Calm communication in writing, our team spans three cities
  • Nice to have: experience with Go, Postgres and event driven systems

The team

Six engineers, one designer and a product lead, spread between Berlin and Lisbon. We plan in six week cycles, write decisions down and keep Fridays free of meetings.

Questions about the role?

Sofia Marques

sofia@lumen.health

Senior Backend Engineer, Scheduling

Berlin · €78k to €92k

Apply now