Curriculum Vitae

Professional summary

Full-stack software engineer, strongest on the frontend, shipping production systems for a hospitality software company since 2023. I lead the page-by-page migration of a multi-tenant management SaaS from legacy Razor / jQuery to React 19, and own an e-commerce platform's payment, kiosk and marketplace surfaces end-to-end — including an exactly-once payment confirmation flow.

Now: At Sibylla I lead the page-by-page React 19 migration of a multi-tenant hospitality SaaS (Portal) and own the e-commerce platform's payment, kiosk and marketplace surfaces (Network) — including an exactly-once payment confirmation flow — while running the team's AI-augmented engineering workflow on Claude Code.

Impact highlights

• Exactly-once payment confirmation

  Beforepayment-gateway callbacks can arrive more than once, and a confirmation has to be recorded exactly once.

  Aftera payment-lock keyed by a unique transaction code and an explicit state machine (pending → paid → confirmed | failed) that no-ops on replays and checks the downstream result before confirming.

  Resulta payment is confirmed only once its booking is confirmed; replayed callbacks are ignored.

• React 19 frontend as three independent SPAs

  Beforethe rebuilt e-commerce platform needed marketplace, kiosk and quote-landing surfaces owned end-to-end.

  Afterthree SPAs on Redux Toolkit + RTK Query with a single-flight 401-refresh auth layer, a ports-and-adapters payment architecture (card gateway / wallet / discount behind one interface), and react-hook-form + Zod over legacy payloads.

  Resultprincipal contributor and top author by commit volume; booking, cart, checkout, wallet and account from zero to production.

• Multi-tenant SaaS migration without a big-bang rewrite

  Beforea multi-tenant hospitality-management SaaS was locked in legacy ASP.NET MVC / Razor / jQuery.

  Aftera page-by-page React 19 migration mounted behind a backend-for-frontend, with a route manifest deciding per page whether to SPA-navigate or full-reload.

  Resultpages move incrementally with no big-bang rewrite; deploy pipeline hardened against stale frontend bundles.

• Security & tenancy audit

  Beforemulti-tenant data isolation and request validation had not been adversarially reviewed.

  Afterled a security and tenancy audit of the multi-tenant surfaces, reviewing data isolation and the request path end-to-end.

  Resultfindings remediated before release; data isolation and request validation hardened.

• AI-augmented engineering framework (Claude Code)

  BeforeAI-assisted migration was ad-hoc and risked unbounded blast radius.

  Afterper-layer instruction files, narrow tool-scoped specialist subagents, an orchestration skill that classifies a task and injects the right invariants, and a plan-first process where a human approves before anything mutates.

  Resulta repeatable migration pipeline; read-only review subagents surfaced three latent payment-flow bugs before release.

Selected projects