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RTB House Logo RTB House · IT - Software Development

Senior Distributed Systems Engineer - Ad Display

Poland · Job Posted January 22, 2026
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Job Description

RTB House is a global company that provides state-of-the-art marketing technologies for top brands and agencies worldwide. Its proprietary ad-buying engine is the first in the world to be powered entirely by Deep Learning algorithms, enabling advertisers to generate outstanding results and reach their goals at every stage of the funnel. The Bidding Platform organization is the core of the RTB business, processing over 20 million requests per second to participate in real-time auctions and display advertisements to customers from 90+ countries. The Ad Display Team, which the job advert relates to, will be a new team sitting within the Bidding Platform, and will focus on ensuring the seamless, high-quality, and reliable display and tracking of our advertisements.

Job Responsibility

  • Design and lead implementation of system changes that deliver high performance, scalability and observability for displaying and tracking ads world wide
  • Develop tools and optimizations to drive measurable improvements in critical user performance metrics
  • Implement, test, deploy, monitor and maintain (in all aspects, including setting up environment, writing configuration code, monitor production) HTTP / gRPC services and batch jobs in Java and Python, ensuring adherence to the high engineering standards
  • Provide hands-on technical leadership: solving complex system challenges, participating in planning and scoping of projects, and ensuring the implementation of the highest coding standards through participation in code reviews

Requirements

  • 8+ years of hands-on experience in software engineering
  • Good understanding of how complex IT systems work (from the hardware level, through software, to algorithmics)
  • Very good knowledge of fundamental Internet protocols and technologies (DNS, HTTP, cookies and others)
  • Good knowledge of basic methods of creating concurrent programs and distributed systems (from thread level to geo-distributed clusters level)
  • Practical ability to observe, monitor and analyse the operation of production systems (and draw valuable conclusions from it)
  • The ability to critically analyze the solutions created in terms of performance (from estimating the theoretical performance of the designed systems to detecting and removing actual performance problems in production)
  • General knowledge of issues (typical problems and methods of solving them) in the areas of 'high scalability' and 'high availability'
  • C1 level in English and Polish

Nice to have

  • Experience in the AdTech/Real Time Bidding space
  • Experience contributing to Real User Monitoring (RUM) systems

What we offer

  • Projects focused on extreme performance and high code quality – solid code reviews are our standard
  • Collaboration within an interdisciplinary, self-sufficient team (including DevOps, database experts, backend developers, product designers, and QA engineers)
  • Hardware and software tailored to your preferences (e.g., MacBook, AI tool licenses)
  • Flexible working conditions – no core hours, fully remote cooperation possible
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