Juha Wilppu

Lead 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.

If you'd like to get in touch, send a message.

Juha Wilppu

Selected work

My Provet

Responsible for core architecture, authentication flow, regional routing, AWS infrastructure and CI/CD foundation for the new patient portal.

2025
my.provet.com

Nordhealth.fi

Owned the system's security, performance and AWS architecture. Solved the most complex technical challenges and shaped key product decisions during development.

2023–2024
nordhealth.fi

Siikli

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.

2017–present

Skills

React TypeScript Node.js PostgreSQL AWS

Articles

Certifications

AWS Certified Solutions Architect – Professional

AWS Certified Solutions Architect – Professional

Amazon Web Services, 2025
Verify credential