Gerwin Klein

Gerwin led seL4’s original verification and has continued to guide its scientific development. Used in commercial products and research, the kernel demonstrates how mathematical proofs can strengthen assurance in software on which other systems depend. Technical community leadership and continuing verification work help sustain that foundation, addressing implementation errors that testing alone cannot rule out.

Gerwin Klein is Chief Scientist and co-founder of Proofcraft, specialising in formal verification and machine-checked mathematical proofs for critical systems. Earlier roles include Conjoint Professor at UNSW Sydney, Chief Research Scientist at Data61, and Senior Principal Researcher at NICTA, uniting software assurance research with real-world systems engineering.

Gerwin planned, led and carried out the original functional-correctness verification of the seL4 microkernel, establishing that the implementation matched its formal specification. Further work has delivered numerous extensions alongside ongoing stewardship of seL4's scientific direction, supporting deployment in commercial products as well as academic research.

At Proofcraft, commercial projects extend the practical reach of verified software across industry. Gerwin also chairs the seL4 Foundation Technical Steering Committee, providing technical leadership to the broader community, and was part of the seL4 team honoured with the ACM Software System Award for strengthening the foundations of dependable software.