Senior Backend Engineer - Adtech / SSP

Nexxen; Bellevue (KY); Hybrid; USD 180,000 - 200,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

Disability insurance

401(k)

Employee assistance program

Parental leave

Unlimited vacation

Company-paid holidays

Job summary

Nexxen is seeking a Senior Software Engineer for its SSP software development team. The role is hybrid with 3 days/week in the office and focuses on building a high-throughput SSP handling billions of ad requests daily.

You will own complex initiatives end-to-end, apply an AI-first mindset, and collaborate with product, ops, and engineering to shape roadmap and architecture. Strong backend expertise is essential.

Qualifications

• 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.

Responsibilities

• 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.

Skills

JavaScript/Node

Distributed systems

Code review

Test automation

SQL/RDBMS

Linux

Git

Communication

Education

BS/MS in CS/Engineering

Tools

Aerospike

Redis

Kafka

Kinesis

Job description

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

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 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.