Platform Lunar

Java Backend Engineer

Vilnius, Lithuania

We build online marketing companies – Platform Lunar is an independent company builder focused on Marketing Technology. We develop and use technologies to build online advertising companies out of Europe. Our mission is to change the future of digital marketing. Platform Lunar develops new marketing and advertising technologies (MarTech / AdTech) to solve challenges not yet addressed in the market before.

We believe in people – we see ourselves as a development boutique and work only with the strongest people in their respective fields. Now, we are looking for a Senior Java Backend Engineer to join our tech-savvy team.

your tasks and Responsibilities

  • Passion about delivering a well-designed and scalable backend system to meet our startups’ business needs
  • Participate in architecting backend systems and our Rest-API for frontend and others components
  • Connect third party systems via APIs to automate large tasks and data transfer
  • Perform unit tests and identify, troubleshoot and resolve production bugs
  • Work together in an agile and excellent team closely with project managers and other developers
  • Write efficient, scalable and well documented code
  • Provide mentorship and guidance to junior engineers

SKILLS and competencies

  • You are motivated, a problem-solver and detail-oriented in your work
  • Graduated with a degree in Computer Science or similar field and a high level of proficiency in object oriented languages
  • Experience designing, implementing projects in a highly scalable and performant environment
  • 3+ years of experience in Java and hands-on experience with Spring and Spring Cloud Framework
  • 2+ years of experience in developing backend service and creating APIs, developing micro services is a big plus
  • Experience with version control system (Git) and development / release process and unit & integration testing
  • Good English communication skills, since we are working internationally

Additional Experience

  • Conceptual knowledge of online advertising space and hand-on experience in building ad tech, including analytics, ad serving, targeting, real time bidding (DSP, SSP, DMP) is a big plus
  • Skills with big data technologies (Spark, Hive or Java MapReduce) is a big plus
  • Experience in cloud / PaaS infrastructure (such as AWS, Heroku) or experience deploying, monitoring and tuning high performance code in a SaaS environment is a plus
  • Experience with frontend development (React) or GraphQL is a plus


  • Exciting startup atmosphere, work on challenging and highly interesting topics
  • Above market compensation dependent on your skills experience
  • Stock options program for the companies we build
  • State-of-the-art equipment
  • Nice office, team assistance, health insurance, various food & beverages and many more

If you are looking for challenges,like building simple solutions to complex problems, enjoy working with a highly skilled team, quenching your curiosity and expanding your knowledge base – send us your CV in English at Be sure to let us know how soon you can join our team!