AS

Anthony Skrzypczak

Available to hire

Senior Software Engineer with 10+ years of experience building scalable full-stack applications, backend services, and enterprise platforms.

About

Senior Software Engineer with 10+ years of experience building scalable full-stack applications, backend services, and enterprise platforms. Experienced in RESTful API development, third-party integrations, data-driven application design, and performance optimization.

Skilled in delivering reliable software solutions across frontend and backend systems, with strong experience collaborating with distributed teams using modern JavaScript frameworks and backend technologies (Go, C#, and Node.js).

  • 13 years' experience
  • Joined July 2026

Industry experience

  • Software & Internet
  • Professional Services
  • Education

Work experience

Senior Software Engineer · FirstupAug 2021 – Present · 5 yrs 4 mos

Developed scalable full-stack features using TypeScript, React.js, and Go, supporting enterprise user-facing workflows and backend services. Built and maintained backend service integrations and REST APIs to connect application components with third-party systems and data-driven workflows. Designed and optimized PostgreSQL database solutions to improve reliability and performance. Implemented and supported API integrations and backend processing workflows to scale platform capabilities and improve operational efficiency. Troubleshot production issues, optimized performance bottlenecks, and improved stability using logging, monitoring, and production diagnostics. Collaborated with distributed engineering teams on planning, architecture decisions, feature delivery, and continuous improvement.

Senior Software Engineer · PeerPlansJul 2020 – Aug 2021 · 1 yr 2 mos

Developed backend services using C#, REST APIs, and database technologies to support scalable business applications. Designed and integrated application services with external systems through reliable API integrations and structured data workflows. Optimized SQL Server queries and database structures to improve response times and system efficiency. Built maintainable backend components supporting feature development across enterprise application platforms. Debugged production issues and improved reliability through testing, monitoring, and systematic troubleshooting. Worked with Agile teams to plan and deliver software enhancements in a distributed environment.

Web Developer · EnablonJun 2013 – Jul 2020 · 7 yrs 2 mos

Developed enterprise web applications using JavaScript, Angular, C#, and ASP.NET to support complex business workflows. Created backend components and REST APIs enabling communication between application modules and external services. Improved SQL Server performance through query optimization, indexing strategies, and database tuning, achieving up to 40% faster execution time. Refactored legacy systems to improve maintainability and align with software architecture patterns. Conducted debugging, testing, and production support activities to ensure stable enterprise application performance. Collaborated with cross-functional teams throughout the SDLC to deliver high-quality software solutions.

Education

Bachelor of Science in Computer Science · University of Illinois, Urbana-Champaign2009 – 2013

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