Open to opportunities

Luis Cabrera

@luiscabrera

Message

I am a full-stack engineer specializing in scalable SaaS, API integrations, and cloud-native deployments.

United States

Message

What I'm looking for

I seek a collaborative engineering role building scalable SaaS products, leading API and cloud integrations, and improving observability, CI/CD, and cost-efficient infrastructure in a product-focused team.

I am a full-stack engineer focused on building scalable SaaS applications using Next JS and Java Spring Boot, prioritizing user data security and application performance.

I have built a full-stack SaaS product secured with JWT and PostgreSQL, and integrated marketplace APIs (eBay, Amazon, BackMarket, Swappa, Reebelo, Walmart, Shipstation) using WebHooks, WebSockets, and async workflows to improve data synchronization.

I architect systems with clean layered design, observability (logs, metrics, alerts), and scalable deployments; I migrated infrastructure from AWS to IONOS to cut operational costs and streamline deployments while maintaining CI/CD and strong Git workflows.

Previously I served as CEO and technical lead, built internal platforms, automated marketing and checkout flows, onboarded freelance developers, and delivered mobile and web projects; I seek product-focused engineering challenges where I can drive reliable, customer-centric solutions.

Experience

Work history, roles, and key accomplishments

Current

Full Stack Engineer

Current

Resellsync

Jan 2024 - Present (1 year 8 months)

Built a full-stack SaaS using Next.js frontend and Java 21 (Spring Boot, Hibernate) backend secured with JWT and PostgreSQL, improving data security and application performance. Integrated marketplace APIs via WebHooks, WebSockets and RabbitMQ to improve data synchronization and reduce manual data entry.

Next.js Java Spring Boot PostgreSQL JWT RabbitMQ API Integration WebSockets

Software Engineer & CEO

Wegowefix

Jan 2021 - Jan 2024 (3 years)

Built an internal Java platform to track sales, product trends, and generate reports from WordPress data, improving business reporting and insights. Automated email marketing and developed a custom WordPress checkout to streamline payments and increase conversion reliability.

Java WordPress PHP JavaScript HTML CSS MySQL Email Automation

Full-Stack Developer

Freelancer

Jan 2020 - Jan 2021 (1 year)

Developed user management, messaging, event subscriptions, and email features using Spring, MySQL, REST, and WebSockets, improving user interaction and communication. Built a React single-page application to enhance performance and provide seamless navigation.

Spring Java MySQL REST APIs WebSockets React JavaScript SPA

Flutter Developer

Freelancer

Jan 2021 - Present (4 years 8 months)

Developed lightweight cross-platform mobile applications in Flutter integrating with RESTful backends and third-party APIs to deliver smooth UX on Android and iOS. Implemented authentication flows and user-friendly interfaces to improve client app usability.