Agustin Castiarena

Senior Fullstack Engineer

Led technical initiatives within the Recording Studio, the company's core product area, focusing on scalability, performance, and long-term maintainability.

• Improved the Recording Studio platform architecture to better support scalability and long-term maintainability
• Decomposed core business logic into GraphQL-powered microservices, enabling a more modular platform architecture
• Reduced frontend complexity through large-scale technical refactoring that improved maintainability
• Introduced AI-assisted engineering workflows and code review automation to streamline development practices
• Delivered features across engineering teams for one of the company's most business-critical products
• Developed Livestream integrations, enabling platform login and RTMP streaming with refresh token circuits
• Facilitated stable peer-to-peer communication for video calls, enhancing user experience
• Provided technical support to high-profile clients including Microsoft, TED, X, and Spotify

• React
• GraphQL
• Microservices
• Integration Testing

Frontend Team Lead

Started as a Frontend Engineer and progressed into a Team Lead role responsible for both technical delivery and team management.

• Built and evolved a client-facing VR/AR healthcare platform used to deliver product improvements
• Improved delivery planning and team coordination across engineering workstreams
• Expanded the team by contributing to hiring and recruitment efforts
• Strengthened team growth through mentoring and resource planning
• Shipped product improvements in close partnership with stakeholders

• React
• Integration Testing

Senior Frontend Engineer

Played a key role in one of the company's largest frontend modernization initiatives.

• Advanced the platform migration toward a decentralized micro frontend architecture
• Built and maintained a shared UI kit that improved consistency across frontend teams
• Migrated core checkout and payments functionality to support the broader modernization effort
• Developed an internal tool utilizing the company UI library, enabling contributions from all team members
• Implemented automated processes for seamless version creation and publishing, enhancing team efficiency

• React
• Micro frontends
• Integration Testing

Fullstack Engineer

AXA

• Led the migration of a React project from JavaScript to a typed solution, enhancing code reliability.
• Advocated for end-to-end testing based on BDD using Gherkin language for the E-Rescue project.
• Contributed to the significant migration of the E-Lawyers project, ensuring secure database connections with Redux Saga.

• React
• Test-Driven Development
• Redux Saga

Senior Frontend Engineer

Worked on one of Latin America's largest e-commerce platforms, delivering product improvements for millions of users.

• Built and maintained purchase flow functionality across the platform
• Rolled out purchase flow initiatives across multiple Latin American countries
• Improved automation processes and engineering quality
• Strengthened testing practices within the engineering team
• Delivered scalable solutions in collaboration with multiple product teams
• Built and nurtured a team focused on Frontend implementations, fostering collaboration and innovation
• Developed a modular component for Google Maps integration, widely adopted across the company
• Implemented an E2E test suite supporting over 1000 cases for various payment methods, ensuring reliability in key markets
• Transitioned inline JavaScript to a Node.js process, enhancing compatibility with modern frontend technologies

• React
• TypeScript
• Node.js
• Test-Driven Development

Senior Frontend Developer

Basso Brovelli

• Developed innovative web solutions for high-profile marketing campaigns for brands like Branca and Villa del Sur.
• Collaborated with cross-functional teams to enhance frontend applications for various clients, including N.A.S.A (Argentina) and DutyFree.
• Utilized modern frontend technologies to ensure optimal user experience and engagement across all projects.

• React
• Test-Driven Development

Junior Frontend Developer

Cobranzas

• Improved and maintained a legacy user interface from 1999, transitioning to modern JavaScript frameworks.
• Integrated Bootstrap to enhance the UI's responsiveness and user experience.
• Contributed to asynchronous operations by adding JSON support to existing XML API responses on ASP.NET servers.

• jQuery
• SQL

Freelance Developer

Ilcacto

Support building and maintaining websites, also contributed on-site presentation for interactive projects at Tecnolopis in Buenos Aires.

Freelance Developer

Octavo Círculo

• Provided frontend support for e-commerce pages tailored to natural pharmacies in Spain.
• Maintained and integrated new features to enhance user experience and functionality.
• Contributed to the updating of promotional websites, ensuring they remained current and engaging.
• Collaborated with Octavo Círculo, a dynamic advertising services startup, to drive online presence.