Senior Software Engineer

Ryan
Grundmann

Scalable systems. Reliable software. Thoughtful engineering.

Senior Software Engineer with extensive experience designing, building, and supporting scalable web applications, backend services, REST APIs, and distributed systems using C#, .NET, SQL, JavaScript, and cloud technologies. Proven track record delivering reliable, high-performance software for high-volume customer-facing platforms and owning systems from technical design through deployment and production support. Experienced improving performance and maintainability, resolving complex production issues, mentoring engineers, and collaborating across Product, QA, Operations, and Engineering teams.

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Technical Profile

Core Skills

A broad engineering foundation across application architecture, backend development, databases, cloud tooling, performance, and technical leadership.

Languages & Frontend

C#SQLJavaScriptPHPC++COBOLHTMLCSS

Backend & Data

.NETASP.NETREST APIsDistributed SystemsAPI DesignSystem DesignSQL ServerMySQLOracleInformix

Cloud, Engineering & AI

GCPGitGitHubCI/CDPerformance OptimizationAgile/ScrumTechnical LeadershipClaude CodeLLM Engineering
Career

Professional Experience

Hands-on development, architecture, leadership, production ownership, modernization, and mentoring across multiple generations of technology.

Senior Software Engineer

AMain Sports & Hobbies
Apr 2018 – May 2026
  • Designed, built, and maintained cloud-hosted SaaS applications supporting multiple high-volume customer-facing platforms.
  • Developed scalable backend services and REST APIs using C#, .NET, SQL, and JavaScript.
  • Owned product features from technical design through implementation, testing, deployment, monitoring, and production support.
  • Designed distributed services supporting payment processing, reporting, inventory management, fulfillment, and workflow automation.
  • Improved reliability, performance, and maintainability while reducing technical debt through refactoring and modernization.
  • Participated in architecture and code reviews, mentored teammates, and used Claude AI to accelerate implementation and improve code quality.

Senior Software Developer

SunGard Public Sector and Superion (now CentralSquare Technologies)
Sep 2016 – Mar 2018
  • Designed and developed enterprise SaaS applications using C#, .NET, SQL Server, and JavaScript.
  • Built reusable backend frameworks and API components that improved scalability, maintainability, and developer productivity.
  • Solved complex integration challenges between enterprise applications and external systems.
  • Collaborated with Product Owners, QA, and Engineering teams to evaluate tradeoffs and deliver reliable software.
  • Mentored developers through code reviews, collaborative problem solving, and architecture discussions.

Development Lead

SunGard Public Sector
Jul 2013 – Sep 2016
  • Led software engineering teams developing enterprise software products used by public-sector organizations.
  • Guided architecture, technical planning, and engineering best practices across multiple development teams.
  • Mentored engineers and fostered collaboration, knowledge sharing, and continuous improvement.
  • Partnered with executive leadership and Product Management to prioritize engineering investments and product initiatives.

Software Developer

SunGard Data Systems and SunGard Public Sector
Feb 1995 – Jul 2013
  • Designed, developed, tested, deployed, and maintained enterprise backend applications using C#, C++, COBOL, SQL, and JavaScript.
  • Built scalable business applications supporting thousands of users and complex operational workflows.
  • Improved application reliability, maintainability, and performance through continuous enhancement and refactoring.
  • Participated throughout the complete software development lifecycle from design through long-term production support.
Foundation

Education

Bachelor of Science, Computer Science

California State University, Chico (Chico, California)

Minor in Business Administration

Completed additional Graduate School work towards Masters Degree in Computer Science

Associate of Arts, Accounting

Yuba College (Marysville, California)