Senior/Lead Software Engineer — Real-Time Ad Serving (LiveIntent)

Zeta Global is an AI-Powered Marketing Cloud that simplifies sophisticated marketing through its platform. As a Senior Software Engineer, you will design and develop the business logic for programmatic advertising, working primarily with Lua and collaborating with product teams to meet customer needs.

• Develop and optimize business logic in Lua for ad selection, targeting, frequency capping, and budget pacing
• Design, build, and maintain real-time services processing 200K+ requests per second
• Work closely with Product to deliver features that meet advertiser and publisher needs
• Ensure code quality through code reviews, automated testing, and continuous integration
• Participate in architecture discussions and influence the technical roadmap
• Participate in on-call rotation to support production systems

• 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
• Experience with Lua or willingness to learn
• 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
• Experience with OpenRTB protocol and ad exchange integrations is a plus

• Excellent medical, dental, and vision coverage