Senior Backend Engineer - AI-First AdTech, High-Throughput

Nexxen; Bellevue (WA); 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 SSP – hybrid, three days in-office in Bellevue, WA – is seeking a Senior Software Engineer to join our software development team. You’ll own complex, end‑to‑end initiatives for a high‑throughput SSP that processes billions of real‑time ad requests daily.

Apply an AI‑first mindset, mentor peers, and improve performance, scalability and observability through code reviews, testing, and robust design across DSP/SSP integrations.

Qualifications

• BS/MS in Computer Science or related field preferred.
• 5+ years of expert‑level JavaScript/Node backend experience at scale.
• Strong grounding in distributed systems, caching, and load balancing.
• Solid fundamentals in data structures, algorithms, and systems design.
• Experience with distributed databases and streaming pipelines (Aerospike, Redis, Kafka, Kinesis).
• Proficient in SQL, Linux, networking, and Git; track record of mentorship.

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 and third‑party data providers; adhere to standards such as OpenRTB and VAST.
• Build high‑throughput, low‑latency services with caching and in‑memory stores.
• Maintain observability, incident response, capacity planning and on‑call readiness.
• Lead code reviews and mentor peers to raise the technical bar.
• Identify and resolve performance bottlenecks in high‑volume systems.

Skills

JavaScript/Node backend

Distributed systems

Data structures & algorithms

System design

Testing & QA mindset

Education

BS/MS in Computer Science or related field

Tools

Aerospike

Redis

Kafka

Kinesis

Linux

Git

SQL

Job description

Nexxen SSP – hybrid, three days in-office in Bellevue, WA – is seeking a Senior Software Engineer to join our software development team. You’ll own complex, end‑to‑end initiatives for a high‑throughput SSP that processes billions of real‑time ad requests daily.

Apply an AI‑first mindset, mentor peers, and improve performance, scalability and observability through code reviews, testing, and robust design across DSP/SSP integrations.