Senior AdTech Backend Engineer - AI-Driven, Low-Latency

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

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.