Tenjin is hiring a

Senior Front-End Engineer

We're looking for a Senior Front-End Engineer with React JS experience. Our ideal candidate has worked with a React front-end backed by a Ruby on Rails application, enjoys working in a collaborative environment, and is a great communicator.

This position is ideally in Berlin. Remote can be considered but you must be based in the CET zone.

Team, Culture, and Product

We're a 7-person engineering team in a 33-person company and are looking to rapidly and responsibly grow our team. We're remote-heavy, spread across three continents with hubs in Berlin and San Francisco. We aim to help mobile app developers make data-driven decisions about their marketing in a secure, privacy-centric, user-friendly way.


Users visit our dashboard to configure marketing campaigns and view analytics reports about their mobile apps. Our dashboard is a Ruby on Rails web application with a React JS frontend.

Behind the scenes, our web and data services are written in a mix of Java, Go, and Ruby and run on AWS. We currently process around 400K data points per minute.


  • Develop and maintain the front-end of our marketing analytics dashboard
  • Design composable and reusable front-end components
  • Guide major front-end architecture and software design decisions
  • Work cross-functionally with design and product to deliver intuitive user experiences
  • Help customer support respond to customer feedback about bugs and usability problems
  • Assist with writing documentation and tests


  • Experience building front-end pages and components in React JS
  • Experience with Git and Github or similar
  • Excellent organization and communication skills
  • Experience building and consuming REST APIs


  • Experience with Ruby on Rails or a similar web framework
  • Experience with mobile marketing


  • Annual budget for learning and personal development
  • Budget for fitness/wellbeing activities
  • Budget towards vacation activities -- accommodation, flights etc.
  • Fantastic bonus scheme
  • Regular (also virtual) Team Events
  • Subsidized lunches
  • Unlimited holidays
  • Flexible working arrangements: hours and location
  • Company away days
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