Juha Wilppu

Lead Software Engineer focused on architecture, performance and DX

I'm a Finnish Lead Software Engineer with 13+ years of experience in software developmnent. My main stack is React, TypeScript and AWS. I focus on architecture, performance and developer experience.

I build reliable systems end to end: frontend, backend and cloud. I simplify complex codebases so teams can move faster.

Current focus: React, Node.js, PostgreSQL and AWS.
Side project: Siikli.fi – a lightweight ERP built end to end by me.

Selected projects

Nordhealth.fi – Booking portal for therapists
Team lead & architect. Designed AWS architecture and delivered a high-volume booking platform.
nordhealth.fi
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

JavaScript, TypeScript, React, Node.js, PostgreSQL, AWS, Terraform, Docker, Kubernetes

Certifications

AWS Certified Solutions Architect – Professional
Amazon Web Services, 2025
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Articles

LinkedIn
GitHub
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