Open to opportunities

Matias Alonso Pisani

@matiasalonsopisani

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Full Stack Software Engineer building fast web apps and distributed backend systems.

Argentina

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What I'm looking for

I’m looking to keep building full-stack products with distributed backends and clean microservices, using AI tooling daily to accelerate delivery. I want a team that values reliability, testing, and code review—end to end.

I’m a Full Stack Software Engineer with 4+ years of experience building web applications and distributed backend systems in Java, TypeScript, Node.js, and React. At Nera, I worked across merchant management services and B2B portals in a multi-bank payment fintech, contributing to the full microservices architecture and shipping merchant lifecycle features, onboarding, document processing, and agreement management.

I’m also an AI-native developer, using Claude Code and Cursor in daily production work for 1+ year—leveraging agentic workflows to ship features faster, generate tests, and conduct code reviews. I’m comfortable directing AI agents to write, review, and iterate on production code, and I’ve translated that same end-to-end mindset into freelance projects like RipeAI (ESP32 firmware, Node.js backend with MQTT and InfluxDB 2, and Vision API with FastAPI + OpenCV).

Experience

Work history, roles, and key accomplishments

Full Stack Software Engineer

Nera

Oct 2023 - Jun 2026 (2 years 8 months)

Built and maintained a multi-bank payment fintech platform across merchant management services and B2B portals for the agribusiness sector. Delivered features across Java/Spring microservices and React/Next.js frontends, including merchant lifecycle, onboarding and document processing, and agreements management.

MongoDB AWS S3 SQS Lambda NestJS React Next.js PostgreSQL Redis

Frontend Developer Jr.

No Country

May 2022 - Nov 2022 (6 months)

Developed frontend for a retro multiplayer gaming platform using React with Node.js and MongoDB for real-time scoring and leaderboard functionality. Contributed to a website redesign for Centro Cultural San Martín, implementing event ticketing, course registration, and newsletter features.

React MongoDB Real Time Scoring Leaderboards Ticketing

Frontend Developer Trainee

Root IT Service Provider

Feb 2021 - Jun 2021 (4 months)

Maintained an internal website and implemented UI improvements using HTML, CSS, JavaScript, and Bootstrap. Supported ongoing updates to keep the frontend consistent and usable for internal stakeholders.

HTML CSS JavaScript Bootstrap Frontend UI Maintenance Responsive UI