Senior Software Engineer (.NET​/Backend

The Role

We’re looking for a Senior Software Engineer, Backend to join our growing Integrations team. This role is critical to building and scaling the systems that power Cognitiv’s partnerships with other platforms and clients. You’ll work across our suite of products, enhancing backend services, developing APIs, and supporting new integrations that directly drive revenue and customer impact.

Location:

Hybrid MTW in Bellevue Office.

• Build and maintain scalable, reliable backend systems that power integrations across multiple products.
• Collaborate with cross-functional teams (Business Development, Product, Customer Success) to define requirements and deliver solutions that enable new business opportunities.
• Dive deep into a large, multi-product codebase — debugging, optimizing, and improving backend performance.
• Write clean, maintainable, and well-tested code with a strong focus on operational excellence.
• Ensure backend systems are well-documented, observable, and resilient in production.
• Identify opportunities to automate processes, improve performance, and enhance system reliability.
• Infrastructure: AWS, Docker
• Tools: Rider, Data Grip

• You’re an experienced backend engineer who thrives in ambiguous, fast-paced environments.
• You love exploring and improving complex systems — not afraid to jump into unfamiliar codebases.
• You communicate clearly and collaborate effectively across technical and non-technical teams.
• You care about code quality, testing, and operational excellence just as much as you care about shipping features.
• You take ownership of your work and follow projects through from idea to production.

• Experience working on integrations or partner-facing systems.
• Background in AdTech, Mar Tech, or Data Engineering.
• Familiarity with CI/CD pipelines and monitoring tools (Grafana, Datadog, etc.).
• Exposure to distributed systems, large-scale APIs, or event-driven architectures.

$160,000 - $210,000 USD Base Salary + Equity

• Medical, dental & vision coverage (some plans 100% employer-paid)
• 12 weeks paid parental leave
• 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) with employer match
• Parking (CA & WA offices) & pre-tax commuter benefits
• Employee Assistance Program
• …and more!

• Festiv – We make work fun with cross-team games, events, and creative team bonding.
• Responsiv – You’ll be close to clients and leadership, influencing real outcomes.
• Inclusiv – Diversity and individuality are celebrated across all levels.
• Inventiv – We reward curiosity and embrace bold ideas.
• Transformativ – We support your growth with training, mentorship, and flexibility.
• Collaborativ – We operate across coasts, connected by purpose and teamwork.

Cognitiv is proud to be an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive workplace for all.