Defined 0nce

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Thoughts on systems, Rust and our company!

Ferris the Rustacean, but giant and in blue.
conferenceindustry

A Recap of EuroRust 2026

EuroRust is yearly conference that focuses on community and new ideas throughout the language and its use.

·5 min read
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Elias (left) and Max (right) in the audience at the Oxidize conference in Berlin.
conferencesafety-criticalindustry

The Direction of Safety-Critical Rust: Oxidize 2026

Known as 'The Applied Rust Conference', Oxidize focuses on industry, embedded and increasingly about using Rust in safety critical contexts.

·5 min read
Max behind his monitor and plants in the new office
company

Announcing the New Defined Once HQ!

To be able to grow further, Defined Once has moved its headquarters to the A'DAM tower, right across Amsterdam Central station.

·1 min read
RCN launch image with white text on a blue background saying 'Rust Commercial Network Launches to Bring Commercial Users of Rust Language Together'.
companycommunity

We're joining the Rust Foundation's Rust Commercial Network (RCN)

Defined Once Engineering B.V. has joined the Rust Commercial Network as a founding member to stay in contact with Rust's commecial users and to give back to the Rust programming language.

·2 min read
Elias (left) and Max (right) at RustWeek 2026 in Utrecht
company

And We're Live - Launching at RustWeek 2026

We're officially launching Defined Once at RustWeek 2026 in Utrecht. Here is who we are, what we do, and why we do it.

·2 min read
Abstract visualization of a gap between private data (a sovereign cloud) and a shady corporate cloud, illustrated by a bridge between secured data storage and a crumbling bridge to a dark landscape with a cloud that shows a question mark.
companystrategy

Pushing for digital sovereignty as a member of NLdigital

Why we do and do not believe that being part of NLdigital is beneficial to our values and operation.

·4 min read
Abstract visualization of two people on a computer screen, with charts and technical icons on the background in Rusty colors.
companylaunch

Why this might be the worst time to start a consultancy

With the world on the verge of an economic crisis and AI getting better and better, now might be the worst time to launch a development consultancy. Why are we determined to proceed anyway?

·8 min read