Senior Software Engineer — Real-Time Ad Serving
Berlin, Germany Remote
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About the role
As a Senior Software Engineer on the LiveIntent Real-Time Ad Serving team, you will design, develop, and own the business logic that powers programmatic advertising at scale — ad selection, targeting, frequency capping, budget pacing, and delivery optimization. The real-time platform is built on C++ and Lua: C++ provides the high-performance server framework, while Lua implements the business logic layer. You will work primarily in Lua, developing and evolving the features that directly serve LiveIntent's product — ensuring advertisers get the best outcomes and publishers maximize their revenue. While we're open to candidates with experience in any backend language, a willingness to work with Lua is essential — we provide time and the right environment to get up to speed. You will collaborate closely with Product, working on features that directly impact LiveIntent's customers — from ad targeting and delivery to reporting and optimization. This is a hands-on engineering role where your code runs in production handling billions of daily transactions. This is a hybrid/remote role based out of our Berlin, Germany or Prague, Czech Republic offices.
What you'll bring
- 5+ years of software engineering experience in backend development
- Deep understanding of computer science fundamentals: data structures, algorithms, performance optimization
- Experience building and operating distributed systems in production
- Exposure to the full software development lifecycle — from design to production and monitoring
- Strong commitment to code quality, automated testing, and documentation
- Proficient English (the interview process will be held in English)
- Experience with Lua or willingness to learn (we provide time and the right environment)
- Experience in online advertising / ad tech (RTB, programmatic, DSP/SSP) is a plus
- Proficiency in a systems-level language (C++, Go, Rust, or Java) is a plus
- Experience with MongoDB and real-time data processing is a plus
- Experience with cloud infrastructure (AWS) at scale is a plus
- Experience with AI-assisted development tools and agentic workflows is a plus