Mainmatter

Mainmatter is a European software engineering consultancy headquartered in Munich, Germany. Formerly known as simplabs, the company works with startups, scaleups, and established organizations to build reliable, maintainable, and high-performing digital products.

The company is known for its focused expertise in modern software technologies, particularly Rust, Ember.js, and Svelte. Mainmatter combines hands-on engineering with deep involvement in open-source ecosystems, helping clients adopt robust technical foundations while benefiting from practical experience in building production-grade applications.

Beyond client delivery, Mainmatter contributes to the broader developer community through open-source work, technical education, and participation in technology events. Its positioning is especially strong for organizations seeking a specialized engineering partner with deep knowledge of frameworks, collaborative delivery practices, and a long-term approach to software quality.