Jacek Radko is a Staff Software Engineer based in Saint Paul, Minnesota with 11 years of experience building and leading engineering teams across retail and consumer platforms. He progressed through technical and leadership roles at Target—rising from Senior to Principal Engineer—and brought that scale experience to product-focused companies like ModCloth and Gravie before joining Clerk.com. Jacek combines hands-on engineering with architectural stewardship, shipping reliable systems for high-traffic retail environments and mentoring cross-functional teams through complex migrations and feature rollouts. He has a track record of moving between startup and enterprise contexts, which gives him a pragmatic approach to balancing velocity, quality, and operational stability. Colleagues would note his ability to translate business needs into maintainable technical roadmaps while keeping an eye on developer experience.
Official JavaScript repository for Clerk authentication
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