Donovan Heynen
@donovanheynen
Frontend Web Developer and React-focused full-stack engineer building client-ready apps and scalable email systems.
United StatesWhat I'm looking for
I’m a frontend-focused full-stack developer with a B.S. in Computer Science and 2 years of software engineering experience at Stellantis. I build and deploy React applications for small businesses, including 4 live client projects, while owning the full web development lifecycle from UI/UX in Figma through deployment, SEO, and ongoing support.
My work blends product thinking with engineering depth: I architect a shared multi-tenant email backend using Cloudflare Workers (Resend API + server-rendered React email templates) and translate non-technical client requirements into production-ready experiences. Previously at Stellantis, I automated plant model engineering processes with MATLAB and Simulink, and supported Agile CI/CD debugging and deployment for high-priority HIL/SIL project builds.
Experience
Work history, roles, and key accomplishments
Freelance Web Developer
Self Employed
May 2025 - Present (1 year 1 month)
Built and deployed 4 production React applications for service-based businesses, optimizing SEO and lead generation while owning end-to-end delivery. Architected a multi-tenant transactional email system using Cloudflare Workers (Resend API) to centralize form submissions across client sites.
Software Engineer (Automotive)
Stellantis FCA
May 2022 - Nov 2024 (2 years 6 months)
Automated plant model engineering processes using MATLAB and Simulink, cutting manual workload and error rates by over 50% across the team. Managed CI/CD pipeline debugging and deployments for high-priority HIL/SIL project builds and designed prototype model logic/electrical signal networks to enable virtual simulation testing.
Education
Degrees, certifications, and relevant coursework
Scrimba (Coursera)
Professional React Developer Certification, React
Completed a Professional React Developer Certification via Coursera from Scrimba in May 2025.
Meta (Coursera)
Front-End Developer Certification, Front-End Web Development
Completed a Front-End Developer Certification via Coursera under Meta in January 2025.
Grand Valley State University
Bachelor of Science, Computer Science
Earned a B.S. in Computer Science with minors in Computer Engineering and Mathematics. Completed the program in December 2022.
Tech stack
Software and tools used professionally
Availability
Location
United StatesAuthorized to work in
Website
donovanheynen.comPortfolio
donovanheynen.com/portfolioSocial media
Job categories
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