Senior Backend Engineer Adtech SSP

What Youll Do:

Nexxens SSP Software Development team is building and running a high-throughput SSP that processes hundreds of billions of real-time ad requests a day. Youll 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.

This role will be based in the Bellevue WA office. Our team follows a hybrid schedule working in-office three days a week and remotely for the rest. This is an exempt position.

Each day can be different here at Nexxen but some of the things you can expect to be doing daily are:

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 youll bring:
BS/MS (preferred) in Computer ScienceEngineering 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


In support of pay transparency and equity the minimum and maximum full-time annual base salary for this role is $180000 - $200000 the time of posting with the potential of an incentive or bonus. While this is our reasonable expectation this is not a guarantee of compensation or salary actual compensation is influenced by a wide range of factors including but not limited to skill set level of experience education certifications responsibility and geographic location. Candidates hired to work in other locations will be subject to the pay range associated with that location. We offer a variety of benefits including medical dental vision disability insurance 401(k) EAP parental leave unlimited vacation and company-paid holidays. The specific programs and options available will vary depending on the state start date and employment type. Our Talent Acquisition team will be happy to answer any questions you may have.

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Required Experience:

Senior IC