IT and R&D Senior Python Software Engineer Warsaw, Masovian Voivodeship, Poland

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.

We are looking for a Senior Python Software Engineer to join our internal team at RTB House. In this role, you will own complex technical challenges, design and scale backend systems, and deliver solutions that directly support our core business in real-time bidding. This position is ideal for engineers who thrive on problem-solving, system design, and building reliable software that has immediate impact.At the same time, we combine local expertise with our broader company vision, giving you both autonomy and the opportunity to contribute to a truly global product.

You Will :

• Design, develop, and maintain internal web applications responsible for ad campaigns management, e.g. configuration, monitoring, automation
• Drive the design and implementation of jobs and processes integrating internal services at scale
• Take ownership of complex technical topics end-to-end : explore new domains, clarify requirements, decompose problems, and deliver robust solutions
• Identify and eliminate bottlenecks, implement performance optimizations to maximize efficiency, scalability, and reliability
• Write and maintain unit / integration tests to ensure code quality and long-term stability
• Shape and evolve internal Python libraries and frameworks used across teams
• Collaborate with cross-functional teams, providing clear technical guidance and translating complex concepts into simple explanations

Desired Experience :

Selected Technologies :

Messaging : Google Pub / Sub

Data Handling & Validation : Pydantic, dataclasses

Testing : Pytest

CI / CD : GitHub Actions

We Offer :

Apply now!

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

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