Senior Software Engineer

Senior Software Engineer Who is Nexxen? Flexible advertising, unified by data. Nexxen empowers advertisers, agencies, publishers and broadcasters around the world to utilize data and advanced TV in the ways that are most meaningful to them. Our flexible and unified technology stack comprises a demand-side platform (“DSP”) and supply-side platform (“SSP”), with the Nexxen Data Platform at its core. Why join the Nexxen team? With a global footprint, you can be part of a team that is transforming advertising through our creative, flexible and unified solutions. Employees hustle, commit and dedicate themselves to pillars that make up the Nexxen Way – the 3Cs - Customer Centric, Curious Mindset, Collaborative with No Ego. Important Notice from Nexxen: Your Safety Matters At Nexxen, we care about the well-being of our current and future employees. We are aware of the growing number of online scams and fraudulent job postings, and we urge all job seekers to remain vigilant. Please be advised that Nexxen will never request payment (whether in cash, cryptocurrency, or any other form) as a condition of employment, offer positions that require you to invest in vague or dubious financial schemes, or promote roles that resemble get-rich-quick opportunities. If you receive a suspicious message claiming to be from Nexxen or encounter a questionable job posting associated with our name, please contact us at infosec@nexxen.com to verify its legitimacy. Your trust is important to us. Stay safe and informed. Nexxen Fraud Alert and Notice: Protect Yourself from Impersonation and Fraudulent Activity https://nexxen.com/nexxen-fraud-alert-and-notice/ We are seeking a Senior Software Engineer to design and build core components of our Demand Side Platform (DSP) that powers real-time programmatic advertising. The role focuses on developing high-throughput, low-latency distributed systems capable of processing billions of bid requests per day while delivering optimized bidding decisions within strict latency constraints. You will experiment with new and innovative technologies designed for Programmatic Ad serving and Ad Tech solutions. You will work on the core bidding infrastructure, targeting systems, and integrations with supply partners to drive efficient ad delivery and maximize campaign performance. This role will be based in our NY or Baltimore local office. https://nexxen.com/our-locations/Our team follows a hybrid schedule, working in the office three days a week and remotely for the rest. What You’ll Do: • Design and develop high-performance distributed systems handling large-scale bid request traffic with sub-100ms latency requirements. • Build and optimize real-time bidding (RTB) services that evaluate targeting rules, campaign budgets, and bidding strategies in real time. • Architect microservices and event-driven systems that support billions of daily ad transactions. • Build systems to support server-side auctions and bid optimization strategies. • Integrate with external Supply Side Platforms (SSPs), exchanges, and ad servers using industry standards such as OpenRTB and VAST. • Develop robust APIs and connectors for partner integrations and supply onboarding. • Troubleshoot and optimize integration performance with external ad tech platforms. • Optimize systems for extreme throughput, low latency, and high reliability. • Implement efficient caching layers and in-memory data stores using technologies such as Redis, MongoDB, etc. • Monitor and improve system performance through observability, load testing, and capacity planning. • Collaborate with product managers, ad operations, and partner engineering teams to deliver new platform capabilities. • Provide technical leadership in architecture reviews, system design, and performance optimization. • Mentor junior engineers and contribute to engineering best practices across the organization. • Develop and maintain reliable, scalable, and efficient backend se ... (truncated, view full listing at source)