// building scalable systems and thoughtful solutions

Lucas Carrias

Senior Fullstack Engineer

I build and improve complex web applications, focusing on performance, scalability, and clean architecture. Experienced in leading teams and delivering real-world impact across large-scale systems.

Lucas Carrias

About

I'm a fullstack developer with experience across backend-heavy systems and modern frontend applications.

Over the past years, I've worked on large-scale platforms, including ticketing systems used by millions of users, focusing on performance, system reliability, and maintainability.

Beyond coding, I enjoy solving complex problems, mentoring developers, and contributing to healthier engineering environments.

Selected Work

Ticketing Platform Performance & Reliability

Improved performance and stability of a large-scale ticketing platform used by millions of users.

Problem: High latency and instability during peak traffic, affecting checkout experience and system reliability.

Solution: Optimized backend queries, improved API interactions, and worked on system-wide performance fixes across a multi-service architecture.

Impact: Reduced response times and improved system stability during high-traffic events.

Ruby on RailsReactGraphQLPostgreSQLMongoDB

Large-Scale Rails Migration & Modernization

Contributed to the migration and modernization of a complex legacy application at Autodesk.

Problem: A large, aging codebase with outdated dependencies and performance bottlenecks.

Solution: Refactored critical parts of the system, resolved integration issues, and updated external dependencies while maintaining system stability.

Impact: Improved maintainability, reduced technical debt, and enabled continued evolution of the platform.

Ruby on RailsJavaScriptDocker

Payments & Third-Party Integrations

Led and contributed to integrations with payment systems and external services in a production environment.

Problem: Need for reliable and scalable integrations with payment providers and third-party services.

Solution: Implemented and maintained integrations with services such as Stripe and PayPal, ensuring consistency, reliability, and proper error handling.

Impact: Enabled secure and scalable payment flows, supporting critical business operations.

StripePayPalRubyAPIs

Technical Leadership & Team Enablement

Acted as a tech lead across multiple projects, supporting teams and improving delivery processes.

Problem: Teams facing complex technical challenges, coordination issues, and evolving product requirements.

Solution: Mentored developers, guided architectural decisions, and facilitated communication between stakeholders and engineering teams.

Impact: Improved team efficiency, delivery quality, and overall project outcomes.

LeadershipArchitectureMentorship

Career

Currently working as a Fullstack Developer at Autodesk, contributing to large-scale applications and migration efforts across complex codebases.

Previously, I worked at Universe (a Ticketmaster company), where I helped build and maintain a global ticketing platform. My work involved backend systems, frontend applications, performance improvements, and third-party integrations such as Stripe and PayPal.

I’ve also contributed as a tech lead at Globant, mentoring developers, supporting teams, and helping deliver high-impact features across multiple projects.

Contact

Feel free to reach out — I'm always open to discussing interesting problems, opportunities, or collaborations.