Tomas Nicolorich

A budgeting app for couples and roommates who split expenses by income, not evenly: each person contributes a share of shared costs proportional to what they earn, so spending stays fair even when incomes differ.

• npm workspaces + Turborepo monorepo with a shared domain package for financial calculation logic
• Type-safe domain modeling: Zod schemas/types consumed by both the Prisma/Supabase API and the React 19 SPA
• Architecture decisions documented as ADRs
• Calculation-on-read design: quotas recompute live from incomes instead of stored balances, avoiding stale-data bugs
• API deployed as Vercel serverless functions: Prisma 7 against Supabase Postgres through PgBouncer, with Zod validation, Supabase Auth, and transactional email via Resend
• Quality gates enforced in GitHub Actions CI: Vitest unit/integration suites, TypeScript strict mode, ESLint, and Husky pre-commit hooks

Live site ↗Source ↗

• Turborepo
• React 19
• Prisma 7
• Supabase Postgres
• Zod
• Vercel
• GitHub Actions

Design and maintain content delivery services and a transactional email platform on Java 21 / Spring Boot 3.5 microservices for a global hotel chain, using contract-first development from OpenAPI specs.

• Cut API response time by 30% after architecting a Couchbase caching layer
• Diagnosed and resolved recurring production memory-leak issues, cutting unplanned service restarts
• Delivered a new GraphQL endpoint in Magnolia CMS for faster frontend data fetching
• Collaborated within a ~30-person cross-functional Agile team

• Java 17/21
• Spring Boot 3.5/4
• Couchbase
• GraphQL
• OpenAPI
• Magnolia CMS
• ServiceNow
• Claude Code

Built and maintained the backend for a loan origination platform processing thousands of applications monthly for enterprise financial clients across Italy, including validation pipelines and rule engines integrating 5+ third-party services.

• Raised test coverage by 70% on a legacy platform — ~300 unit and integration tests authored, cutting regression incidents in production
• Collaborated within a ~20-person cross-functional Agile team across the full development lifecycle

• Java 8
• Spring
• Oracle SQL
• Jira
• ServiceNow

Developed a company website in Vue 3, backed by a Java/Spring middleware, as a freelance frontend engineer based in Argentina.

• Vue 3
• Java
• Spring

Maintained and extended a legacy Java travel-package application for the tourism sector during an internship — reading, debugging, and improving existing code.

• Java 5/8
• AS400
• TortoiseCVS