Nahuel Santos

Barcelona, Spain

• Founded Staysy, an app-free digital guidebook for short-term rental hosts: guests open a single link for check-in details, WiFi, house rules, local tips and emergency contacts, with nothing to install.
• Own the product end to end as a solo founder: research, positioning, design, build, launch and iteration, from the first prototype to paying customers.
• Run the commercial side: free and Pro plans, subscription billing, pricing and onboarding, plus the sales and support conversations that decide what gets built next.
• Delivered the platform for hosts managing 10-20+ properties, with per-booking guest access that expires automatically at checkout and support for English, Spanish and French.
• Also own delivery, security and operations: automated tests, staged releases before production, and documented, repeatable deploys on self-hosted infrastructure.

Barcelona, Spain

• Leading backend development for a multi-tenant AI analytics platform using .NET Core, designing and implementing scalable microservices and core features consumed via a Backend-for-Frontend (BFF) architecture.
• Architecting solutions and providing technical guidance across multiple teams and senior engineers, ensuring consistency and quality.
• Proactively identifying and addressing performance bottlenecks and architectural limitations in existing services, managing the modernization of legacy components.
• Driving improvements in system observability using Datadog and Sentry within AWS.
• Contributing to frontend development (React/React Native) and managing multi-tenancy aspects via Piranha CMS.

Barcelona, Spain

• Designed and developed microservices (Go, .NET, gRPC, REST) enabling integration between the core VMS product and 3rd party analytics tools, empowering external developers.
• Operated extensively within a Kubernetes environment, defining deployment strategies and optimizing distributed services for high throughput and reliability.
• Mentored two junior developers, guiding their technical growth and contributions.
• Contributed to team building as part of the events committee.

Auckland, New Zealand

• Architected and delivered a mission-critical, microservices-based integration layer (using .NET Core, Go, Lambda, DynamoDB, S3) between Xero's accounting platform and Shopify, automating key financial workflows for numerous customers.
• Collaborated closely with multiple Xero teams to ensure seamless end-to-end functionality.
• Managed cloud infrastructure via Terraform, promoting Infrastructure as Code practices.

Auckland, New Zealand

• Led development of a comprehensive transport management platform (.NET Framework/Core, SQL Server, React) serving 100+ enterprise clients across New Zealand and Australia.
• Architected and implemented a multi-tenant SaaS solution handling millions of transactions, ensuring 99.9% uptime and sub-second response times.
• Designed and built RESTful APIs and integration layers connecting with 50+ third-party systems (payment gateways, mapping services, government APIs).
• Led a team of 4 developers on a new transport product initiative, implementing automated CI/CD pipelines and database migration strategies.
• Championed engineering best practices through knowledge transfer sessions on SOLID principles, Clean Architecture, and Microservices patterns.
• Mentored interns as part of the company's official program.

Buenos Aires, Argentina

• Led development (team of 5) for a GIS application (web/desktop) for government agencies using .NET Framework and Oracle DB, managing large cadastral datasets.
• Successfully designed and implemented an internal time-tracking tool (.NET, EF, SQL Server).

Buenos Aires, Argentina

• Led a small team (3 developers) focused on integrations for advertising industry clients (.NET Framework, EF, SQL Server).
• Successfully developed and delivered a URL shortening product integrating with the Google+ API.

La Plata, Argentina

• Developed features for a financial industry client using Java, Spring, Hibernate, and DB2, gaining exposure to different technology stacks.

La Plata, Argentina

• Rapidly progressed from learning .NET/C#/ASP.NET Web Forms to taking lead responsibility (team of 3) for integrating with SAP via SOAP web services after the senior lead departed.
• Engaged directly with the client for requirements gathering for a major refrigeration industry client. Became a key technical referent for the team.