Independent Technical Consulting
Hands-on engineering and technical leadership for companies and investors — building and integrating systems, migrating data, assessing architecture, leading teams, and technical due diligence.
Karl Kastan — 20+ years in engineering, from enterprise financial services to venture-backed startups to big tech. Engineering leadership from 0-to-1 builds through platforms serving tens of millions of users, and hands-on from application code through cloud infrastructure and data migration. Deep focus on applied AI.