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# Backend Engineer - Adtech / SSP

- **Company:** Nexxen Inc
- **Location:** Bellevue, United States
- **Experience:** Expert
- **Salary:** $180,000.0 - $200,000.0
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), Artificial Intelligence, Data Analysis, Code Review, Data Structures, Relational Databases, Linux, Distributed Data Store, Distributed Systems, Fault Tolerance, Load Testing, Node.Js, Redis, Standard Sql, Software Engineering, Data Streaming, Aerospike, Load Balancing, Test-Driven Development (TDD), Caching, Backend, Git, Information Technology, Apache Kafka
- **Published:** September 4, 2026
- **Apply:** https://startup.jobs/senior-backend-engineer-adtech-ssp-nexxen-com-8764616

## About the Role

* 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

## Description

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


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