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/ The Senior Software Engineer will join the Nexxen DSP Software Development team as a senior technical contributor and trusted leader on mission-critical, high-throughput services. Our DSP processes billions of real-time transactions a day with strict sub-100ms SLAs while accessing billions of different user profiles in the process, so performance, scalability, and operational excellence will guide every project you take on. You will independently translate ambiguous business problems into simple, robust technical designs, raise the engineering bar through code review and mentorship, and champion the application of the latest technologies—including AI—to solve hard AdTech problems. We are a hybrid company where our team works 3 days a week in the NY office and remotely the rest of the week. What You’ll Do: • Serve as a senior engineer on a talented team building critical, high-performance, large- scale services for Nexxen DSP programmatic integrations and platform products • Independently transform vague business requirements into simple, well-reasoned technical designs and drive them from concept through production • Partner closely with the Product team, Engineering Manager, and cross-functional stakeholders to shape requirements, scope, and roadmap • Take full ownership of complex initiatives end-to-end design, implementation, integration, rollout, and post-launch operation • Managing read/write access to a data store with billions of records and millions of operations per second • Write solid, testable, and performant code for services supporting high throughput and low latency (< 70ms response time) • Set the technical bar through code reviews and pair programming, inspiring mid- and junior-level engineers to write simple, testable, and performant code by example • Mentor and uplevel teammates; act as a force multiplier for the broader engineering organization • Apply an SRE mindset to production deployments—observability, on-call readiness, incident response, capacity planning, and continuous reliability improvements • Identify and resolve performance bottlenecks in large-scale distributed systems that process billions of transactions per day with strict SLAs • Drive increased test, monitoring, and automation coverage across services, including automated acceptance testing • Collaborate on technical design across teams and