Casper is hiring a

Senior Software Engineer

Berlin, Germany


Casper is looking for Ruby Developers(m_f) to join the team in our newly opened European HQ in Berlin.  You'll be an integral part of a fast-moving tech team, focused on engineering the best customer experience imaginable. The tools we’re working on power the way our entire company operates, from the user experience on the web to the operational systems around logistics and order management.  As an early member of this international team, you’ll have a huge role in determining the process and scope for future projects, and be responsible for carrying these through to implementation.  You’ll work closely with the international engineering team to develop world class technologies to support the business worldwide. Last but not least you will have flexible working hours and the possibility to work occasionally from Home Office.


  • Work tirelessly to analyze and improve the speed & stability of our website, and constantly evaluate the tools we use to do so
  • Design and build API integrations to various public and private APIs
  • Scale and maintain our infrastructure in the EU in order to improve the experience for EU visitors
  • Support our Logistics and Storefront teams, helping keep all our applications online and healthy
  • Develop ways to capture, analyze, and act upon data to improve our user experience and workflow
  • Think of new ways to improve the business, and be ready to take ownership over their implementation


Our ideal candidate is highly motivated, and able to manage their own time effectively. You should be very opinionated about the software you build and the tools you use, and be willing to debate the choices we make as a team (in the spirit of collaboration of course!). You should also have:

  • 5+ years of experience in a Software Engineer role preferably in a start-up environment
  • A degree in Computer Science, Engineering, or equivalent education
  • Deep knowledge of Rails or another MVC web framework
  • Proficiency with JavaScript (we use CoffeeScript)
  • Proficiency with CSS (we use SASS)
  • Experience working with PostgreSQL or another relational database
  • Comfortable working with Unix command line tools and version-control tools like git
  • Experience building and expanding web platforms through periods of high growth
  • Ability to prioritize tasks and spec out requirements for implementation
  • Experience in E-Commerce is a major plus


  • Unique opportunity to be a founding member of a young team at a successful venture-backed consumer brand
  • Cool office in Berlin Mitte
  • Open culture with flat hierarchies and a challenging work environment
  • Unlimited snacks and drinks as well as weekly team lunches
  • Competitive salary

About Casper

Casper ( is a global sleep company that launched in 2014 with an obsessively engineered, outrageously comfortable mattress sold directly to consumers. Its critically acclaimed sleep surface was developed in-house, has a sleek design, and is delivered in a small, "how did they do that?"-sized box. The company is one of the fastest-growing consumer brands of all time, and its product line has expanded to include sheets, pillows, a matching foundation, and a dog mattress. Casper was named one of Fast Company's 50 Most Innovative Companies in 2017, and its eponymous mattress was crowned one of TIME Magazine's Best Inventions.

Casper launched in the DACH and UK markets in 2016, and will be launching in more EU regions soon. Join our team and live the dream.