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September 4, 2026

Senior Scala engineer

Senior • On-site

27,000 - 30,000 PLN/yr

Kraków, MA, Poland

The opportunity

Own features across SSP, Adserver, and Exchange products that process hundreds of thousands of requests per second and run real-time auctions matching advertisers with mobile audiences globally. Join the adserver team, working in functional Scala while helping drive a multi-year transition to Java.

What you'll do

  • Own design, implementation, and testing across SSP, Adserver, and Exchange products
  • Drive the migration of core platform components from Scala to Java
  • Partner with engineers, architects, and Operations to ship enhancements and resolve issues
  • Lead technical discussions and propose improvements to product and process
  • Troubleshoot issues across the application, underlying technologies, and infrastructure
  • Develop technical depth continuously across the stack
  • Ship quality work on schedule while driving developer productivity organization-wide
  • Use AI development tools to streamline the product development process

What you'll bring

Essential

  • BS in Computer Science or related field
  • 1+ years of Scala programming experience
  • 2+ years of Java programming experience
  • 6+ years of software engineering experience
  • Experience designing and implementing microservices in high-capacity, high-traffic, high-availability systems, developed through Agile practice

Nice to have

  • Advertising technology experience
  • Experience with Python
  • NoSQL databases, including MongoDB, Bigtable, and Aerospike
  • Distributed messaging services, such as Kafka or PubSub
  • Data engineering skills, cloud infrastructure management with AWS or GCP, and familiarity with Git/Bitbucket

What we offer

  • Hybrid working with a flexible schedule
  • 1 month of work-from-anywhere
  • Annual performance bonus
  • Multikafeteria (sport/culture card)

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