Location: Poland We Are:RTB House is a next-generation performance demand-side platform (DSP) that uses proprietary Deep Learning AI algorithms to help brands grow. The company is the market leader in driving performance using Deep Learning across the entire purchase funnel. Founded in 2012, and now operating in 90+ markets, RTB House has always been private-by-design. It embraces first-party advertising and a relentless approach to innovation. RTB House offers end-to-end Deep Learning-powered AdTech products and solutions to maximize conversion, drive new customer acquisition, create engagement, and fuel long-term demand for a global base of clients.We are looking for a Software Engineer with solid experience in backend and microservices development to join our team. This person will help design, build, and maintain web applications, microservices and internal tools, while also contributing to frontend development when needed. You Will:  Design, develop, and maintain microservices, APIs, and system integrations. Contribute to frontend and backend features as part of fullstack development. Support ongoing development requests from our ticketing system and publisher integrations. Build and maintain internal dashboards, reports, and data visualizations to support business teams. Collaborate with other engineers to ensure code quality, scalability, and efficiency Desired experience: 4+ years of professional experience in software development. Strong knowledge of Python and JavaScript/Node.js. Experience with common web technologies (HTML, CSS) and frameworks. Solid understanding of SQL and NoSQL databases. Familiarity with Docker / containerization. Awareness of software design patterns and good coding practices. Fluent in English and comfortable working in a distributed, multidisciplinary team.  We Offer:  A unique opportunity to join an award-winning organisation, one of the fastest-growing tech companies in Europe Ability to lead innovative and impactful projects within the organisation Great environment for growth and skills development, work in a team of enthusiasts Modern tech stack and access to high computational power Remote or hybrid work model Attractive salary  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.