Back-End Software Engineer

Ljubljana, SI

About us

Celtra’s SaaS product is used to build and host the highest quality, data-driven video and interactive display ads for 2/3 of Fortune 500 brands. Our servers can handle 100k requests per second, many of which fan out to other services, internal and external. Any downtime costs our advertisers thousands of dollars per minute, and costs us even more in reputation. 

Job description

You will be part of our backend team that is responsible for building high-volume, low-latency infrastructure that delivers Celtra ads to users. You will be working with software that can scale linearly, process requests in parallel in few millisecond, all while calling external services, analyzing the request and making smart decisions.

We expect:

  • Experience with JVM based languages (preferably Scala) or ability to show deep understanding of programming language of your choice.
  • Proficient usage of Linux.
  • Understanding of various software paradigms and architecture styles (REST, OOP, MVC, etc).
  • Developer-level knowledge of SQL.
  • Passion for doing TDD, code reviews and writing technical specifications.
  • Over the top dedication to learn and improve.
  • Team players.

Nice to haves:

  • Knowledge of various NoSQL databases.
  • Knowledge of JavaScript and other frontend technologies.
  • Knowledge of functional programming concepts.
  • Experience with building scalable SaaS platform.

Our offer

You will be joining a diverse, highly innovative and creative team of developers, designers and managers from all over the globe:

  • We care deeply about our product, company and its people.
  • We believe in high standards and long term code quality.
  • We ship. Features and fixes are deployed weekly.
  • We believe in an open and proactive culture where engineers are expected to learn and contribute in ways outside the usual coding assignments.
  • We always follow the latest technology trends and constantly research and learn new things.

We take good care of our people:

  • Receive a highly competitive base salary, benefits and quarterly bonuses for performance.
  • Enjoy a generous education budget for conferences, classes, literature or studies.
  • Choose your equipment.
  • Our fridge is always full and we drink the best coffee.
  • Travel between US and Europe.
  • Not from around here? No problem: If you are the right person, we are more than willing to help you relocate.
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