Open to opportunities

Christopher Schwab

@christopherschwab

Message

Senior C#/.NET engineer delivering reliable APIs and desktop tooling for cloud-native, high-scale workflows.

United States

Message

What I'm looking for

I want to build and modernize production systems with strong engineering standards—mentoring, code reviews, and observable, maintainable architecture that improves real user workflows across API and desktop tooling.

I’m a Senior C#/.NET engineer with 10+ years delivering production software across enterprise platforms, APIs, desktop-oriented tooling, and cloud-native systems. I focus on translating complex workflows into polished user-facing and internal tools—built for performance, accessibility, and long-term maintainability.

In my current role, I lead C#/.NET modernization for DoorDash’s local commerce ecosystem, building Windows-oriented internal tooling, REST API services, and cloud-native workflows supporting teams across a platform serving 25M+ users. I architect reporting APIs and partner-facing delivery workflows that shortened onboarding by 35% and reduced manual report handling by 18 hours per week, while sustaining 99.9% uptime during peak demand.

I’ve also built analytics and campaign operations services at Rayneta, reducing reporting lag from next-day refreshes to near-real-time and improving campaign decision turnaround by 30% faster. Earlier, I delivered secure policy management capabilities and payment/servicing APIs for fintech and insurance systems, strengthening audit logging, role-based access, and reliability through testing and observability.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

DoorDash

Apr 2022 - Present (4 years 2 months)

Led C#/.NET modernization for DoorDash local commerce, building Windows-oriented internal tooling, REST API services, and cloud-native workflows supporting 25M+ users. Architected reporting and partner data delivery that reduced onboarding by 35% and manual report handling by 18 hours/week, while improving peak capacity 2x and sustaining 99.9% uptime.

C#.NET 8+ASP.NET Core REST APIs PostgreSQL Redis AWS Docker Kubernetes CI CD

Senior Software Engineer

Rayneta

Sep 2020 - Mar 2022 (1 year 6 months)

Built internal analytics and campaign operations services using C#/.NET 5, ASP.NET Core, React, and SQL Server to centralize attribution, pacing, and performance reporting. Reduced reporting lag from next-day to near-real-time (saving 12 hours/week), improved campaign visibility response time by 30%, and cut release time by 40% with containerization and CI/CD.

C#ASP.NET Core React SQL Server REST APIs Azure Docker CI CD Data Pipelines

Full Stack Engineer

The Hartford

Feb 2018 - Sep 2020 (2 years 7 months)

Enhanced a policy management platform with C#/.NET Core 3.1, ASP.NET Core, SQL Server, Entity Framework, and Angular for quoting and secure customer servicing workflows. Reduced policy processing exceptions by 28%, improved service completion times by 22%, and strengthened audit logging and RBAC with OAuth 2.0 secured APIs.

C# .NET Core ASP.NET Core SQL Server Entity Framework LINQ Angular OAuth 2.0 Audit Logs Unit Testing CI CD

Software Engineer

Affirm

Oct 2014 - Feb 2018 (3 years 4 months)

Built and scaled backend payment and servicing APIs for a fintech platform supporting merchant checkout and pay-over-time experiences as transactions grew toward $1B+. Improved merchant launch speed by 30% via Python/JavaScript onboarding workflows, cut reconciliation runtimes by 35%, and reduced production defects by 20% while supporting 99.9% reliability.

C#Python JavaScript SQL Server Entity Framework REST APIs AWS