About Carlos
Need to scale your SaaS product or untangle a tricky technical integration? I help you build and ship full-stack features (React, Node.js, .NET) without friction, from architecture through production. 10+ years delivering dashboards, APIs, and AI-driven automations for startups and enterprise clients.
I'm a Full-Stack Software Engineer and Technical Consultant with over 10 years of experience across Spain, Brazil, and Argentina.
I work hands on across the full stack: React, Next.js, TypeScript, and Angular on the frontend; Node.js and .NET Core/C# on the backend, with PostgreSQL, MongoDB, and SQL Server. Most recently, I've built multi-tenant SaaS platform from scratch, owning the architecture and integrating AWS , Stripe, Auth0, and Sentry among others end to end.
I'm equally comfortable defining the architecture of a new product and getting into the weeds to fix a production bug. I speak Spanish, Portuguese, and English, and I'm available to start immediately on short-term or multi-month projects, remote or based in Barcelona.
Results-oriented and comfortable working against tight timelines.
Spanish
Native or bilingual
Portuguese
Native or bilingual
English
Fluent
Can work on-site
Barcelona (up to 50km), Madrid (up to 50km)
Experience
- ForgeSenior Full-Stack EngineerJuly 2024 - Today (2 years and 1 month)Architected and built scalable SaaS dashboard from scratch (dash.forge.gg): React, TypeScript, Node.js, PostgreSQL Designed multi-tenant architecture supporting playtester management, quest systems, real-time analytics, and staff tooling Integrated AWS services (S3, Lambda) and third-party platforms (Steam, Stripe, Auth0, Sentry, SendGrid) — owned architecture, implementation, and deployment end-to-end
- MerthinEngagement Director – Software EngineerDecember 2021 - July 2024 (2 years and 7 months)Led full-stack development of cloud-based SaaS products from MVP to production (MERN & PERN stacks) Architected database schemas, REST APIs, and React frontend for GGWP — a moderation and behavioral analytics platform Maintained hands-on engineering ownership while coordinating cross-functional team delivery
- LisztSoftSenior Software EngineerJune 2019 - December 2021 (2 years and 6 months)Buenos Aires, ArgentinaDeveloped asset management solutions in .NET for Bloomberg in a high-standards agile environment Designed and implemented high-performance integration solutions with a multi-cloud approach Collaborated with cross-functional teams across geographies to deliver against client specifications
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Education
- Instituto Superior Politécnico José Antonio Echeverría2014
- Object Oriented Software Analysis and DesignEscuelaIT2019Object Oriented Software Analysis and Design