Juha Wilppu
Lead Software Engineer focused on architecture, performance and DX
I'm a Finnish Lead Software Engineer with 13+ years of experience building web and cloud systems. My main stack is React, TypeScript and AWS, with a strong focus on architecture, performance and developer experience.
Current focus: React, Node.js, PostgreSQL and AWS.
Side project: Siikli.fi – a lightweight ERP built end to end by me.
Selected projects
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Nordhealth.fi – Booking portal for therapists
Team lead & architect. Designed AWS architecture and delivered a booking platform handling thousands of weekly appointments.
nordhealth.fi
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Siikli – ERP for agriculture
Founder & developer. €10M+ invoiced through the system. Built end to end (React, Node.js, PostgreSQL, AWS). Rewritten in 2025 with modern stack.
siikli.fi
Skills
React, TypeScript, Node.js, PostgreSQL, AWS, Terraform, Docker
Certifications
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AWS Certified Solutions Architect – Professional
Amazon Web Services, 2025
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