Understand the problem
Establish the product context, reproduce the failure, and separate symptoms from the root cause.
Selected work
Case studies focused on the problem, implementation, and operating reality.
Client identities and private system details are intentionally excluded. Each case study explains the type of product, my responsibilities, the technical challenge, and the solution delivered.
26case studies
45work categories
81+technical skills
What each story covers
From the reported problem to reliable operation.
Each representative case study is structured around decisions, tradeoffs, delivery, and the production state that follows.
Implement deliberately
Choose changes that fit the existing stack, data model, integrations, and delivery constraints.
Verify operating reality
Check important workflows, recovery states, deployment behavior, and what maintainers need next.
1 case study tagged Authentication
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Passkey & TOTP Account Security
A security-focused account upgrade combining passkey registration and sign-in with authenticator-app TOTP, recovery boundaries, and existing PHP session rules.
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