Nexxen

Senior Software Engineer - AdTech Bidding Platform / Traffic Shaping Specialist

Nexxen
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1 month ago
Bellevue, WA, USASenior
H1B sponsor

Base Salary

$175k - $200k/yr

Responsibilities

  • Develop and optimize the Node.js real-time bidder that decides which requests to forward to demand partners.
  • Build and maintain the near-zero-latency throttling layer that acts on bidder decisions.
  • Create the job that aggregates traffic performance and produces the throttle layer connecting analytics with the live bidder.
  • Query and analyze billions of bid requests and impressions using SQL.
  • Apply interpretable gradient-boosted models to rank traffic features that predict bidding and translate findings into real-time rules.
  • Write and reason about production code with strong attention to performance and correctness.
  • Use AI coding tools such as Claude Code, Copilot, or ChatGPT while critically reviewing their output.

Requirements

  • Strong generalist capable of learning unfamiliar systems and reasoning from first principles.
  • Production programming experience with expertise in at least one backend programming language and distributed systems.
  • Fluency in SQL or willingness to become fluent, with comfort working with large datasets.
  • Experience in one or more of AdTech/RTB, real-time or low-latency systems, columnar databases, A/B testing, or ML tooling is preferred but not required.
  • Fluent use of AI coding assistants as a serious part of the software development workflow.
  • Curiosity, fast learning, and a focus on understanding system behavior, performance, and correctness.

Benefits

  • Medical, dental, vision, and disability insurance.
  • 401(k) plan and employee assistance program.
  • Parental leave, unlimited vacation, and company-paid holidays.
  • Hybrid Bellevue, Washington work arrangement with three days in the office and remote work for the remainder.
  • Exempt full-time position.
Nexxen

About Nexxen

501-1,000 employees

Nexxen builds programmatic advertising technology—a DSP, SSP, and data platform—used by brands, agencies, and publishers to plan, buy, and monetize TV/CTV and digital video. The public company earns media-buying and platform fees and operates across North America, Europe, and APAC. Headquartered in New York, it is listed in London and focuses on data-driven campaigns across converged media.

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