Mainmatter

About Mainmatter

Mainmatter is a Munich-based software development company specializing in web applications built with Rust, Elixir, and Ember.js. Their 12 reviews reflect 100% client satisfaction, with the founder Marco frequently commended for technical leadership and clear communication. They serve 7 industries with a compact team, positioning themselves as a specialist rather than a generalist shop.

Who Mainmatter Is Best For

Mainmatter is the right fit for companies building technically demanding web applications in specialized stacks like Rust or Elixir. Their senior team brings deep framework knowledge that generalist agencies typically lack. Best for clients who already know their tech stack and want a Munich-based specialist to execute it with precision.

Why Choose Mainmatter

Things to Consider

Mainmatter Services

Selected Work

Trainline — Full Market Potential for a Leading Travel Platform

Trainline

Mainmatter partnered with Trainline's engineering team to deliver a high-performance mobile web app alongside improved engineering process — pair programming, iterative delivery, SSR, and localization that increased sales.

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Qonto — Helping Hand for a Visionary Fintech Startup

Qonto

Embedded with Qonto's frontend team after Series B: migrated off legacy templates, cut CI times in half, shipped critical Ember.js features, and established visual regression and bundle-size tracking for sustainable velocity.

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Aleph Alpha — Preprocessing Trillions of Tokens with Rust

Aleph Alpha

Team reinforcement with Aleph Alpha to architect and implement a distributed Rust data pipeline that preprocessed 4.5 trillion tokens on time for GPU cluster training — architecture, StackIt infra, and Rust mentoring.

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Photos