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Software Engineer, Backend

Bellevue💼 Full-time💰 $130,000–$130,000🗓 2026-09-17 → 2026-09-26

Core

Build the foundational platform powering Cognitiv's real-time bidding and campaign execution engine, managing budgets, pacing, strategies, and creatives for high-scale downstream systems.

Role type

Senior Backend Software Engineer (Platform)

Builds

Real-time bidding (RTB) and campaign execution engine

Domain

AdTech / Deep Learning Advertising

Deliverable

production ML models | product features

Required skills

.NET Core (C#), SQL/Postgres, ClickHouse, AWS, DataDog, distributed systems, observability, automated testing, system design

Preferred skills

Adtech/RTB experience, latency-sensitive high-throughput systems, cloud platforms, internal tooling

Technologies

.NET Core, C#, SQL, Postgres, ClickHouse, AWS, DataDog

Responsibilities

Own feature delivery from kickoff to post-launch support; author production-ready code with observability and automated test coverage; maintain service SLOs and contribute to on-call; author design docs for features and services; mentor interns or new hires

Seniority

Senior, hands-on IC

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