Juha Wilppu
Senior Product Engineer
I build software with React, Node.js, PostgreSQL and AWS. I've spent 13 years shipping production systems in demanding domains like healthcare and finance.
I take full ownership in everything from idea to production: shaping requirements, making trade-offs and delivering results. I prefer simple solutions and avoid unnecessary complexity until it adds value.
Selected projects
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my.provet.com — Patient portal for pet owners
Responsible for core architecture, authentication flow, regional routing, AWS infrastructure and CI/CD foundation for the new patient portal.
my.provet.com
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Nordhealth.fi — Booking portal for therapists
Owned the system's security, performance and AWS architecture. Solved the most complex technical challenges and shaped key product decisions during development.
nordhealth.fi
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Siikli – ERP for agriculture
Founder & developer. In daily production use since 2017 with €13M+ invoiced through the system.
Designed and built the entire product end-to-end and maintained it in production use for years.
Skills
React · TypeScript · Node.js · PostgreSQL · AWS
Certifications
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AWS Certified Solutions Architect – Professional
Amazon Web Services, 2025
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