Leonhard Melzer is a software developer with 15 years of hands-on experience building full-stack web applications and shipping business-driven product features. He combines JavaScript/TypeScript, Node.js, React and backend expertise with a pragmatic, KPI-focused product mindset honed at VincuVentas and Peerigon, where he scaled systems and helped steer prioritization between impact and effort. Comfortable owning features end-to-end, he has driven measurable outcomes such as scaling email throughput to 1M/week and growing user databases while keeping delivery metrics stable. Leonhard contributes to notable open-source work on ApostropheCMS, improving backend redirect behavior and documentation, showing a commitment to production-grade maintenance beyond his day job. He also brings interdisciplinary experience from public-sector product design at Tech4Germany and leads sustainability and diversity efforts at his current company, including producing their carbon footprint report. With a B.Sc. in Computer Science & Multimedia, he blends technical depth with product intuition and cross-functional collaboration.
14 years of coding experience
12 years of employment as a software developer
Information Engineering, Information Engineering at Universität Konstanz
Bachelor of Science (B.Sc.), Computer Science and Multimedia, Bachelor of Science (B.Sc.), Computer Science and Multimedia at University of Augsburg
A full-featured, open-source content management framework built with Node.js that empowers organizations by combining in-context editing and headless architecture in a full-stack JS environment.
Role in this project:
Backend Developer
Contributions:11 commits, 4 PRs, 10 comments in 2 months
Contributions summary:Leonhard primarily focused on backend development within the Apostrophe CMS framework, specifically addressing soft redirects and related configuration. Their work involved modifying the server-side logic to handle redirects with different HTTP status codes. They also implemented features to enhance redirect behavior, including the addition of configuration options and documentation examples. Furthermore, the user refactored existing code and addressed dependencies.
Simple dashboard for different management tasks, works on our LDAP tree
Contributions:1 release, 179 commits, 25 PRs in 5 months
dashboardtasks-managementldap
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Leonhard Melzer - Software Developer at Peerigon GmbH