Christopher Schwab

Senior C#/.NET Engineer with 10+ years of experience designing secure enterprise web applications, ASP.NET Core MVC platforms, REST APIs, SQL-backed services, and cloud-native systems. Strong hands-on background with C#, .NET 8/6/Core, ASP.NET Core, Web API, Entity Framework, LINQ, SQL Server, PostgreSQL, Oracle SQL, Azure, AWS, Docker, Kubernetes, and CI/CD delivery. Experienced improving authentication, reporting, accessibility, testing, performance, observability, and production reliability across fintech, insurance, local commerce, and digital growth environments.

Known for translating complex business workflows into scalable, secure, maintainable systems that support high-volume users and operational teams.

Senior Software Engineer - DoorDash

(2022-04)

Led production-grade merchant enablement and reporting initiatives for DoorDash's local commerce ecosystem, building C#/.NET 6 and .NET 8 web services, MVC-style workflows, REST APIs, SQL-backed reporting logic, and cloud-native deployment patterns for a platform serving 25M+ users.

• Designed secure ASP.NET Core APIs and data delivery workflows for sales, operations, and finance teams, improving partner onboarding by 35% and reducing manual report handling by 18 hours per week through reusable contracts, validation rules, and retry-safe service patterns.
• Optimized SQL queries, indexing strategies, caching paths, and telemetry for high-volume operational endpoints, lowering p95 response times by 40% while improving root cause analysis through clearer traces, dashboards, and production alerts.
• Implemented secure authentication and authorization patterns across internal services using OAuth2-aligned API controls, role-aware access checks, request validation, and common OWASP protections against injection and unsafe input handling.
• Built template-based reporting and document export services for operational teams, standardizing layouts, validation, and data preparation so generated outputs stayed consistent, auditable, and easier to maintain across changing business rules.
• Orchestrated scalable distributed workflows with Redis, event-driven integrations, Docker, Kubernetes, and CI/CD pipelines, increasing peak API and merchant event capacity by 2x while sustaining 99.9% uptime during high-demand traffic periods.
• Applied Cursor for AI-assisted refactoring, unit test scaffolding, and code review preparation under repository guardrails, test gates, and senior review standards, cutting repetitive delivery work by 25% without weakening production quality.
• Mentored junior engineers through design reviews, pull request feedback, debugging sessions, and knowledge transfer, helping shorten onboarding by about 30% and improve delivery consistency across the team.

Senior Software Engineer - Rayneta

(2020-09 - 2022-03)

Built internal analytics and campaign operations services for a data-driven paid media agency, designing C#/.NET 5, ASP.NET Core, React, and SQL-backed workflows that centralized attribution, pacing, reporting, and performance analysis across multi-channel growth programs.

• Developed database schemas, indexes, stored query patterns, and reporting views for campaign performance data, reducing reporting lag from next-day refreshes to near-real-time delivery and saving analysts 12 hours per week.
• Delivered secure dashboard APIs and business-rule validation services that improved campaign visibility, helped account teams react to spend and ROAS shifts 30% faster, and reduced manual spreadsheet reconciliation.
• Improved frontend accessibility and usability across React reporting workflows by tightening keyboard navigation, form validation, semantic markup, and contrast handling for analyst-facing dashboards.
• Containerized backend services and automated GitHub Actions CI/CD pipelines, cutting release time by 40% and reducing environment drift across development and staging.
• Expanded unit and integration test coverage around ingestion, reporting, and API workflows, improving defect detection before release and giving stakeholders more reliable campaign data.

Full Stack Engineer - The Hartford

(2018-02 - 2020-09)

Enhanced policy management platform capabilities inside a large insurance environment, building C#/.NET Core 3.1, ASP.NET Core MVC, Angular, SQL-backed services, and secure customer servicing workflows for quoting, policy administration, and internal review teams.

• Implemented backend APIs, Entity Framework data access, LINQ queries, and validation logic that reduced policy processing exceptions by 28% and improved customer service completion times by 22%.
• Strengthened OAuth2-secured APIs, role-based access control, audit logging, and sensitive policy data handling while addressing common OWASP vulnerabilities and reducing manual audit preparation by 20%.
• Designed schema changes, indexes, stored query logic, and reporting views for policy workflows, improving database reliability and making business rule enforcement easier to trace during governance reviews.
• Remediated UI accessibility issues across Angular forms and policy workflows, improving keyboard navigation, validation messaging, screen-reader-friendly markup, and contrast consistency for internal users.
• Expanded automated regression, unit, and integration coverage across release cycles, reducing escaped defects by 20% and improving deployment predictability for business-critical insurance workflows.

Software Engineer - Affirm

(2014-10 - 2018-02)

Built and scaled backend payment and servicing APIs for a fast-growth fintech platform focused on transparent pay-over-time experiences, using C#, ASP.NET Web API, SQL Server, and secure REST integrations to support merchant checkout, payment plan servicing, and internal operations as volume expanded toward $1B+ in processed transactions.

• Designed partner integrations and onboarding workflows using Python, JavaScript, REST APIs, and SQL-backed services, improving merchant launch speed by 30% and decreasing manual reconciliation effort by 10 hours per week.
• Optimized payment, servicing, and ledger-related SQL queries plus scheduled jobs, cutting reconciliation runtimes by 35% and improving reporting accuracy for finance stakeholders.
• Implemented secure coding patterns around payment workflows, including parameterized SQL access, input validation, exception handling, and safer API error responses for sensitive transaction data.
• Added unit and integration tests around funding, settlement, and exception handling logic, helping reduce production defects by 20% while supporting 99.9% reliability during rapid platform growth.
• Supported Git-based source control, pull request reviews, CI/CD releases, and production troubleshooting for merchant-facing APIs and internal financial operations workflows.

Master's degree - Southern Arkansas University (2022 - 2023)

Bachelor of Science - Computer Science - University of Florida (2010 - 2014)