Software Engineer, Backend

Cognitiv•Bellevue, WA

3d•Hybrid

About The Position

The Core team builds the foundational platform powering Cognitiv’s real-time bidding and campaign execution engine. Every campaign on our DSP flows through this platform—managing budgets, pacing, strategies, creatives, and configuration while feeding vital controls to high-scale downstream systems. As our scope expands, we’re looking for engineers who want to own meaningful platform architecture rather than take on narrow subsystem tickets. As a Backend Software Engineer on the Core team, you will take on substantial platform challenges and carry them end-to-end from design through production. You will translate business and performance requirements into reliable, production-ready software across our campaign management systems while driving code quality, system stability, and steady engineering progress.

Requirements

Strong programming skills in one or more modern backend languages (preferably .NET Core/C#), with experience building and shipping production software in a collaborative engineering environment.
Hands-on experience working with relational databases (PostgreSQL/SQL) and high-volume data stores.
Solid understanding of testing, debugging, code review, and software development best practices; consistently delivers well-tested, maintainable code.
Track record of independently delivering small-to-medium features end-to-end—from design through deployment—within a sprint cadence.
Familiarity with on-call responsibilities, runbooks, and contributing to system reliability and operational health. (DataDog, AWS)
Clear communicator who can explain decisions and collaborate effectively with technical and non-technical partners.
Proven track record of independently taking small-to-medium features from concept to production within a sprint cadence, taking end-to-end accountability for code quality, rollouts, and post-launch health.
Comfortable breaking down loosely-scoped tickets into clear technical tasks, asking the right questions early, and executing with moderate guidance rather than step-by-step direction.
Quick to adopt new technologies, operational tools, and domain concepts, adjusting smoothly as system needs and business priorities evolve.

Nice To Haves

Experience with cloud platforms, distributed systems, or improving developer workflows, documentation, or internal tooling.
Background in real-time bidding, ad serving, or similarly latency-sensitive, high-throughput systems is a plus.

Responsibilities

Own Feature Delivery: Take responsibility for a feature from kickoff through post-launch support, owning the release plan, branch strategy, canary, and automated rollback.
Deliver Reliable Code: Author production-ready code with meaningful observability (metrics/traces/logs) and automated test coverage ≥ 80%. Recognize edge cases and propose straightforward solutions with moderate guidance.
Strengthen Reliability: Keep service SLOs green by adding missing alerts and dashboards proactively. Participate in on-call and contribute to blameless post-mortems with actionable follow-ups within sprint.
Contribute to Design: Author design docs for single-feature or single-service work that incorporate cost, scale, and rollback considerations. Connect features to OKRs or user metrics and advocate for small UX improvements.
Collaborate & Mentor: Facilitate design or planning meetings for the team, build trust with adjacent teams through reliable follow-through, and mentor interns or new hires on the codebase and processes.

Benefits

Medical, Dental and Vision plan for US employees & Extended Health Benefits for Canadian employees
12 weeks paid parental leave + 4 weeks WFH
Unlimited PTO + Work-From-Anywhere August
Career development with clear advancement paths
Equity for all employees
Hybrid work model & daily team lunch
Health & wellness stipend + cell phone reimbursement
401(k) & RRSP with employer match
Parking (CA, WA, Vancouver offices) & pre-tax commuter benefits
Employee Assistance Program
Comprehensive onboarding (Cognitiv University)