Senior Real-Time Ad Serving Engineer (Lua/C++)

United States Digital Space LLC; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Excellent medical, dental, and vision

Job summary

Zeta Global is seeking a Senior Software Engineer to design, develop, and own the business logic powering programmatic advertising at scale. You will work primarily in Lua, with C++ for the server framework, delivering features that impact advertisers and publishers alike.

The role involves handling billions of daily transactions, collaboration with Product, and improving real-time services. Hybrid/remote role based out of Europe with opportunities to grow within a global AI-powered marketing

Qualifications

• 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.

Responsibilities

• 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 with strict latency requirements
• 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

Skills

Backend development

Distributed systems

Algorithms & data structures

Code quality & testing

English proficiency

Education

Bachelor's degree in Computer Science or related field

Tools

Lua

C++

MongoDB

AWS

OpenRTB

Job description

Zeta Global is seeking a Senior Software Engineer to design, develop, and own the business logic powering programmatic advertising at scale. You will work primarily in Lua, with C++ for the server framework, delivering features that impact advertisers and publishers alike.

The role involves handling billions of daily transactions, collaboration with Product, and improving real-time services. Hybrid/remote role based out of Europe with opportunities to grow within a global AI-powered marketing