Experience

Hypersequent

QA Sphere, a multi-tenant SaaS test management platform. Go, Svelte 5, TypeScript, PostgreSQL.

• › Shipped features across the whole product, from PostgreSQL queries to Svelte components: test planning, CSV import and export, Jira and Linear integrations, and most of the public REST API. Also carried the frontend through a design-system migration and the Svelte 5 upgrade.
• › Reviewed 1,352 pull requests for six teammates, 2.1x my own output, and became the default reviewer on the product monorepo. Authored 648 PRs, 91% merged.
• › Chased performance across the app: pre-created tenant schemas in a pool so sign-ups stopped throwing 502s under load, virtualized the heaviest list views, and pushed pagination and sorting into SQL instead of slicing results in memory.
• › Built the security controls behind customer workspaces: two-factor auth and later its org-wide enforcement, Google SSO with domain restrictions, RBAC across every resource type, and per-key API permissions.
• › Owned the team’s own testing infrastructure: rewrote the Playwright E2E suite, built an API benchmarking harness wired into CI, and replaced handwritten test doubles with gomock. Usually the one root-causing flaky tests, mostly hydration races and shared fixtures.
• › Moved OpenAI calls off the client into the Go backend behind per-tenant quotas, then built a feature that drafts test cases in bulk and streams them back as they generate.
• › Owned billing and subscriptions for 2.5 years: the FastSpring integration, trials, plan changes, seat limits, and the panel support staff run it from. Fixed a run of consistency bugs where payments raced an eventually-consistent third-party API, including a lost-update hazard resolved with row-level locking.

WebNTech

• › Led frontend for an event management system that carried 30,000+ active users through the F1 Abu Dhabi Grand Prix. Also built the frontends for Misk Global Forum and the World Government Summit.
• › Reviewed the team’s code, paired with them on hard problems, and coached the junior developers.

WebNTech

• › Built React PWAs that worked offline and delivered VAPID web push notifications. Shipped a Point of Sale and Kitchen Display System for ordering food from terminals inside event venues.
• › Cut time-to-interactive on a Next.js site from 10s+ to 3–5s.

Advance Telematics Solutions

• › Built the company’s car rental management application and owned every stage of it, from requirements through deployment.
• › Wrote a GPS geofencing algorithm that alerts when a rental vehicle strays off route, the main safeguard against cars being driven off and never returned.

Education

Colegio de San Lorenzo