Steven Clark
Software Developer - Vault Cryptosec at HashiCorp
Montreal, Quebec, Canada
Summary
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RockstarSteven Clark is a seasoned software developer with 12 years of hands-on experience building secure, high-availability backend systems and developer tooling, currently contributing to HashiCorp Vault’s PKI, Transit, and Transform features. Based in Montreal, he blends deep Java/Linux expertise from long tenure at Intelerad—where he built analytics pipelines, serverless processors, CI/CD automation and zero-downtime migrations—with open-source security work enhancing certificate management, ACME support, OCSP handling and PKI test coverage in the widely used hashicorp/vault project. He excels at operationalizing complex, regulated workflows and automating release and infrastructure processes, bringing both developer and operator perspectives to security-sensitive systems. Pragmatic and detail-oriented, he often focuses on edge cases (for example email handling in certificate CNs) that improve reliability in real-world deployments.
12 years of coding experience
18 years of employment as a software developer
English, French
Github Skills (10)
certificate10
go10
api10
cert10
x50910
acme10
apidoc10
cryptography10
pki10
testing9
Programming languages (12)
Github contributions (5)
hashicorp/vault
Oct 2021 - Jan 2023
A tool for secrets management, encryption as a service, and privileged access management
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1656 reviews, 181 commits, 980 PRs in 1 year 3 months
Contributions summary:Steven primarily contributed to the PKI component of the Vault project, with a focus on enhancing and maintaining certificate management functionalities. They addressed a regression in the PKI certificate generation process related to email addresses in common names and also added support for ACME directory APIs. They also made improvements to the handling of signature and revocation, specifically by adding support for verifying specific OCSP signatures and certificate expiry. Additionally, they implemented various test cases and performed refactoring.
golanghashicorp-vaultaccess-managementsecurityvault
hashicorp/vault-pki-cieps-example
Sep 2023 - Apr 2025
Example Certificate Issuance External Policy Service (CIEPS) implementation
Contributions:12 reviews, 21 PRs, 20 pushes in 1 year 6 months
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