Marcus Warnsley
Senior Frontend Developer at MilliporeSigma
Indianapolis, Indiana, United States
Summary
👤
Senior🎓
Top SchoolMarcus Warnsley is a Senior Frontend Developer with over a decade of experience building high-performance, scalable React and TypeScript applications for web and mobile, with recent focus on large e-commerce and security-focused platforms. He specializes in frontend architecture—component design, state management, and rendering optimization—and pairs that expertise with pragmatic backend experience in Node.js and AWS to design end-to-end, API-driven workflows. Marcus has led migrations and reusable component libraries that improved cross-team consistency and shipped data-intensive features using GraphQL and REST. He emphasizes maintainability and test-driven delivery (Jest, RTL, Cypress/Playwright) to reduce regressions in production systems. Based in Indianapolis, he brings a systems-level mindset to UI problems, often surfacing non-obvious performance wins through profiling and render strategy changes.
10 years of coding experience
10 years of employment as a software developer
Full Stack Web Development Certification, Computer Software Engineering, Full Stack Web Development Certification, Computer Software Engineering at Free Code CampBusiness Information Systems, Management Information Systems, General, Business Information Systems, Management Information Systems, General at IWU National & GlobalHigh School, Accounting and Finance, High School, Accounting and Finance at Carroll High School
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (3)
multi-user1
django1
laravel1
Github contributions (5)
mwarnsley/Amazon-Clone
Feb 2016 - Feb 2016
Contributions:8 commits, 7 pushes, 1 branch in 1 day
mwarnsley/mwarnsley.github.io
Jan 2016 - Jul 2017
Contributions:32 pushes, 1 branch in 1 year 6 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.