Matias Castelnuovo
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Buenos Aires, Argentina
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Flexible work
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USD15/hour
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Résumé
Jobs
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Fullstack Engineer verified_user Verified experience public Remote experienceSAS - Scandinavian AirlinesSep 2025 - Jul 2026 (11 months)- Member of the 3-person app-core team maintaining Octopus, the internal framework where ADG teams host their applications as microfrontends, with authentication, design system integration and access to the Azure serverless ecosystem (Azure Functions, Azure Static Web Apps) already solved.
- Built the platform using Vite, utilized daily throughout the experience.
- Provided day-to-day support to the 12 hosted microfrontends: styling issues, bugs and performance requests.
- Became the de facto maintainer of the internal design system after a teammate's reassignment, utilizing Tailwind CSS daily for all changes and new features.
- Carried out the design system v3 to v4 migration across all 12 microfrontends: mapped legacy- Frontend Engineer public Remote experienceFinalisMay 2022 - May 2025 (3 years 1 month)- Worked in cross-functional squads (2 FE, 2 BE, QA, designer, PM, TL) with exclusive ownership of one or two microfrontends within a monorepo of backend microservices (users, compliance, checkout, marketplace) and Next.js microfrontends.
- Fixed bugs and shipped features on the legacy investment banking platform (React, Express REST, PostgreSQL) and took part in the execution of the 2023 rebuild towards Next.js, NestJS and GraphQL.
- Built and maintained the regulatory onboarding flow for broker dealers: a set of 6 to 10 forms (engagement letter, KYC, marketing materials, among others), with JSON Schema validation on the legacy platform and Zod on the new one.
- Developed the main dashboard of the new platform: profile appro - JSOFTWARE ENGINEERJP Morgan Chase & CoApr 2021 - May 2022 (1 year 2 months)- Re-Engineering team: rebuilt 4 internal trading applications from scratch, replicating legacy functionality.
- Implemented Redux with Redux Saga as the central state layer for real-time trading data, including store normalization, separation of domain and UI state, and management of complex asynchronous flows and effects. - SOFTWARE DEVELOPERQUADION TECHNOLOGIESSep 2018 - Apr 2021 (2 years 8 months)- Project reference for Attune (formerly Senseware), a US IoT client: real-time sensor visualization interface for industrial plants.
- Built an authoring tool for algorithms written in the client's proprietary pseudo-language.
- Built a demo landing page with widgets consuming live sensor data for a client presentation.
- Took part in the backend migration from Node.js + Express to Go + Kafka, and in the MySQL to PostgreSQL migration (table and type adaptation to avoid data corruption). - BFULLSTACK DEVELOPERBase GlobalMay 2015 - Jul 2018 (3 years 3 months)- Built and maintained the company's web ecosystem: institutional site plus localized product sites for Mexico, Colombia and Chile.
- Integrated business units: CRM, a basic marketplace and an IoT control add-on.
Education
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- IBM AI Developer Professional CertificateIBMJul 2026 - Current (4 months)
- FFirst Certificate B2Jan 2022 - Mar 2022 (3 months)
- ISYSTEMS ANALYSTISTEA - INSTITUTO SUPERIOR TECNOLÓGICO EMPRESARIAL ARGENTINOAug 2020 - Jul 2022 (2 years)
- ISystems AnalystISTEA Instituto Superior Tecnológico Empresarial ArgentinoJul 2020 - Aug 2022 (2 years 2 months)Systems Analyst
- OOratoryNov 2017 - Dec 2017 (2 months)
- SYSTEMS ENGINEERINGUAI - Universidad Abierta InteramericanaMar 2016 - Dec 2019 (3 years 10 months)