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/) Senior Software Engineer Nexxen SSP | Hybrid — 3 days/week in office Join Nexxen's SSP Software Development team building and running a high-throughput SSP that processes hundreds of billions of real-time ad requests a day. You'll own complex, ambiguous problems end-to-end, apply an AI-first mindset to solve hard AdTech problems, and raise the bar for the team through code review and mentorship — with performance, scalability, and operational excellence guiding every project. WHAT YOU'LL DO • Own complex initiatives end-to-end: design, implementation, integration, rollout, and operation • Apply an AI-first mindset to software development and data exploration • Integrate with DSPs, SSPs, third-party data providers, and standards such as OpenRTB and VAST • Build high-throughput, low-latency services with efficient caching and in-memory stores (Redis, Kafka, Aerospike) • Apply an SRE mindset: observability, incident response, capacity planning, and a shared on-call pager rotation • Raise the technical bar through code review, mentorship, and process/tooling decisions • Identify and resolve performance bottlenecks in systems processing billions of transactions/day • Drive test, monitoring, and automation coverage, including load and acceptance testing • Partner with product, ops, and engineering teams to shape roadmap and architecture WHAT YOU'LL BRING • BS/MS (preferred) in Computer Science, Engineering, or related field • 5+ years of expert-level JavaScript/Node backend experience at scale • Strong grounding in distributed systems: scaling, fault tolerance, caching, load balancing • Solid fundamentals in data structures, algorithms, and systems design • Hands-on with distributed databases (Aerospike, Redis) and streaming pipelines (Kafka, Kinesis) • Strong SQL/RDBMS, Linux, networking, and Git skills • Track record of code review and mentorship that raises the bar for other engineers • Test-first mindset with automated acceptance and load testing • Excellent communicator and strong team player • AdTech industry experience strongly preferred Nexxen SSP — real-time programmatic advertising, hundreds of billions of ad requests processed every day. In support of pay transparency and equity, the minimum and maximum full-time annual base salary for this role is $180,000 - $200,000 the time of posting, with the potential…