Nicolas Stalder is a mathematician-turned-entrepreneur with 13 years of technical experience, currently serving as Cofounder and CEO of Cordial Systems while holding leadership roles at SoloKeys and yamnord GmbH. He blends deep formal training (Dr. sc. ETH Zurich in Mathematics) with hands-on engineering—contributing C firmware and build system improvements to the prominent open-source SoloKeys security key project. His background spans cryptography research at Jump Crypto, quantitative modeling roles in finance and adtech, and applied data science, giving him a rare mix of theoretical rigor and production-grade systems skills. Nicolas focuses on secure, auditable custody and zero-trust architectures, and is comfortable moving between low-level embedded work and strategic product leadership. An understated detail: beyond leadership he still commits code to open-source security firmware, showing he maintains technical craft even while scaling companies.
13 years of coding experience
9 years of employment as a software developer
Dr. sc. ETH Zurich, Mathematics, Dr. sc. ETH Zurich, Mathematics at Eidgenössische Technische Hochschule Zürich
Contributions:2 releases, 165 commits, 83 PRs in 3 years 6 months
Contributions summary:Nicolas focused on firmware development for the Solo 1 security key, working primarily in C. Their contributions involved adding missing standard headers, creating and modifying udev rules for device access and symlinks, and refactoring build processes. The user also incorporated improvements in the build system by incorporating build targets for different Solo versions within a Docker build environment.
Contributions:2 reviews, 26 commits, 3 PRs in 1 year 1 month
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