Nicolás Amorosi
Full-stack engineer. I build the systems organizations run on — academic records, HR, accounts payable — end to end, from the legacy database to production. Remote from Argentina, working in English, Spanish and Italian.
Open to full-time remote roles. Contracts too.
Selected work
Client code is private, so these pages show problems, decisions and outcomes instead of code. Happy to walk through any of it in an interview.
Villa Aurora, Florence2026 – present
Libretto
The academic records system of a theological faculty in Florence: courses, curricula, enrollments, grades and credits, with portals for teachers and students.
- Data models
- 55
- API modules
- 46
- Automated tests
- ~1,200
Villa Aurora, Florence2026 – present
Zero lost characters
The migration behind Libretto: a 46-table legacy database in mixed text encodings, moved record by record without a single corrupted character.
- Legacy tables
- 46
- Canonical users
- 436
- Mapped records
- 14,227
Italian Adventist Church Union2025 – 2026
HR & admin platform
Monthly work reports, absences, medical expenses, travel and treasury for the staff and ministers of the Union, with approval chains and three languages.
- Data models
- 29
- API modules
- 29
- Automated tests
- ~520
Universidad Adventista del Plata2026 – present
Inherited systems
Leading the rewrite of a Progress 4GL accounts-payable system, and taking technical ownership of a research-protocol platform built by someone else.
- Legacy code
- ~53k lines
- Revisions analysed
- 5,774
- Bugs traced to root cause
- 20
Personal project, for churches2026 – present
WorshipApp
A desktop projection app for church services — songs, Bible, slides and media on a second screen — built to replace EasyWorship.
- Automated tests
- ~320
- Version
- 2.1 beta
- Ships as
- Windows installer
Also built
2023 – present
Dental laboratory management
Clients, monthly billing, payments and a credit ledger for Laboratorio Dental Valdense, with PDF summaries shared on WhatsApp through signed links generated on demand. Co-developed the 2023 version and led its 2026 migration to Next.js.
Next.js, MongoDB, Vercel
2025 – present
Real-estate visit scheduling
A SaaS for agencies: an embeddable booking widget isolated in shadow DOM, a WordPress plugin that keeps listings in sync, reminders and Stripe subscriptions.
NestJS, TypeORM, MySQL, Google Cloud
2025 – 2026
Radio staff absences
Absence and on-air substitution management for a radio station, with admin-editable permissions — plus a video playlist player for Raspberry Pi screens fed by an ffmpeg pipeline to S3.
Next.js, Prisma, PostgreSQL, ffmpeg
2026
Planner wall display
A read-only office monitor showing the team’s Microsoft Planner tasks, rendered on the server and refreshed incrementally.
Next.js, Microsoft Graph, MSAL
2026
Database backups to S3
A reusable tool for dockerized databases: dump, compress, verify integrity, upload encrypted to S3, expire after 60 days. It backs up the Union’s production databases.
Bash, Docker, AWS CLI
Experience
University, client work and freelance have run in parallel since 2023.
Sep 2026 – present
Entre Ríos, Argentina
Universidad Adventista del Plata
Software developer, part-time
- Technical owner of VID, the research-protocol platform: audited the inherited codebase and traced 20 reported bugs to their root causes.
- Leading the rewrite of the accounts-payable system from Progress 4GL (~53k lines) to a web stack on PostgreSQL.
Aug 2026 – present
Remote, for Florence, Italy
Villa Aurora
Freelance full-stack engineer
- Lead developer of Libretto, the faculty’s academic records system, and of the migration of its twenty-year-old database.
Jan 2025 – Aug 2026
Rome, Italy
HopeMedia Italia
IT infrastructure & lead developer
- Led a team of three developers, plus two rotating, building the HR and admin platform of the Italian Adventist Church Union.
- Built the radio station’s absence and on-air substitution system, and a video player for Raspberry Pi screens fed by an ffmpeg pipeline to S3.
- Ran production: Docker deploys on AWS EC2, CI/CD with GitHub Actions, encrypted database backups to S3 with 60-day retention.
- Started Libretto, which I continued as a freelancer.
Oct 2023 – present
Remote
Freelance
Full-stack developer
- Management system for a dental laboratory: co-developed the 2023 version and led its 2026 migration to Next.js.
- A real-estate visit-scheduling SaaS: embeddable booking widget, WordPress plugin, Stripe subscriptions.
Mar 2023 – Dec 2024
Entre Ríos, Argentina
Universidad Adventista del Plata
Junior developer
- Upgraded three production systems to the latest Ruby on Rails.
- Built an internal tool to keep the university’s database organized, and started two new systems: an expense-reimbursement assistant and an early-warning system for students at risk of dropping out.
Education
Universidad Adventista del Plata
- Systems EngineerMar 2023 – Nov 2024
- Systems AnalystMar 2020 – Nov 2022
How I work
Habits that show up in every repository.
Permissions, not booleans
Access is a registry of permissions with scopes — own, assigned, all — checked by the server on every request. The interface hides what you can’t do; the API is what stops you.
Tests pin the business rules
Grades, credits, approval chains, balances: the rules people depend on get tests first. Libretto runs about 1,200 of them; the HR platform about 520.
Migrations with a gate
Legacy data moves through previews, idempotent syncs and quality gates that refuse to write rather than write something wrong.
Docs the next developer can use
Every repository carries its own knowledge base: decisions, gotchas, runbooks, handoffs. Libretto’s has 146 documents.
Strict types, shared contracts
TypeScript in its strictest settings, and one contracts package shared by API and interface — a breaking change fails the build, not the user.
AI with guardrails
I work with Claude Code every day — custom skills, MCP servers, a knowledge base per repository. It makes me faster; it doesn’t decide what ships.
Tools
What I reach for, grouped by layer.
- Languages
- TypeScript, JavaScript, SQL, Python, Ruby, Bash
- Interface
- Next.js (App Router, RSC), React 19, Tailwind CSS, shadcn/ui, next-intl
- Back end
- NestJS, Node.js, Express, Ruby on Rails, Prisma, TypeORM, Drizzle
- Data
- PostgreSQL, MySQL, MongoDB, SQLite
- Identity
- JWT + refresh rotation, CSRF, Microsoft Entra ID, NextAuth, Scoped RBAC, Audit logs
- Infrastructure
- Docker, AWS (EC2, S3), GitHub Actions, Vercel, Google Cloud Build, Linux
- Testing
- Jest, Vitest, Playwright
- Integrations
- Microsoft Graph, Stripe, Excel & PDF generation, Electron
About
I studied at Universidad Adventista del Plata — Systems Analyst in 2022, Systems Engineer in 2024 — and wrote my first production code there, upgrading the university’s Rails applications.
In 2025 I moved to Rome to run IT and development at HopeMedia Italia, the media centre of the Italian Adventist Church Union. Since August 2026 I work remotely from Entre Ríos, Argentina, for clients in Italy and Argentina. I’m an Italian citizen.
Off the clock I fly FPV drones and keep a repair log for each one, go running, self-host a home server, and I’m building an ESP32 rack that waters balcony plants on its own.
Languages
- Spanish
- Native
- English
- Full professional
- Italian
- Professional working
- Portuguese
- Limited working
Contact
Looking for a full-time remote role — contracts work too. Write to me:
nicolasamorosi@gmail.comEntre Ríos runs on UTC−3, all year.
My working day overlaps the European afternoon and the whole US East Coast day.