IT and R&D Senior Distributed Systems Engineer - Ad Display Warsaw, Masovian Voivodeship, Poland

61

current job openings

90+

markets

1,500+

people on board

Poland (Remote/Flexible)

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.

If you want to work on technically complex and demanding solutions, this is the opportunity for you!

• Design and lead implementation of system changes that deliver high performance, scalability and observability for displaying and tracking ads worldwide. 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, monitoring 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.

• 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).
• 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 analyse 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.

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

• Java, Python
• Aerospike, Memcached
• Kafka, Clickhouse
• Elasticsearch
• Jenkins, Graphite

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

You don't need to tick every box to apply. If you are passionate about software engineering, send us your CV, and we'll review it.