Senior Software Engineer

📋 Description Design, build, and optimize backend systems powering RTB and ML at scale. Handle billions of daily transactions with strict latency and reliability. Work in a distributed, low-latency environment. Collaborate across teams to deliver robust infrastructure. 🎯 Requirements Experience designing and implementing complex IT systems. Ability to develop user-friendly, versatile tools. Proficiency in Python, C++, Java, or Scala; Linux skills. Strong ability to optimize performance from design to production. Deep understanding of algorithms and data structures. Polish language at C1 level. 🎁 Benefits A highly competitive salary. Team of ML, Big Data, and distributed-systems experts. Remote work (100%) or offices in Warsaw or Cracow. Access to latest tech for large-scale projects. Optimize algorithms for hundreds of millions of users and ad views. See immediate impact of your work on business outcomes.