Juan Pablo Gallardo

Backend Developer & Tech Lead with 4+ years of experience in microservices architectures using Node.js (Express / NestJS), MongoDB, and MySQL.

Background in marketplace and fintech, JWT authentication, CI/CD pipeline implementation, Docker, AWS ECS deployments, and backend team technical leadership. Frontend knowledge in Next.js for fullstack collaboration in production environments.

Backend Developer & Tech Lead at Macro Intell SA (2025-06 – 2026-02)

Led backend development of AgroCarteira, a digital wallet complementary to TodoAgro for the Brazilian market.

• Led a team of 3 backend developers building a digital wallet complementary to TodoAgro (similar to MercadoPago) for the Brazilian market, supporting PIX payments, boletos, credit card, and P2P transfers.
• Designed and maintained a 12-microservice architecture with NestJS, using RabbitMQ for event-driven communication between services, with automated production deployments via GitLab → Docker → Portainer.
• Built and published agrocarteira-utils, an internal reusable library with shared logic across all 12 microservices, achieving a 40% reduction in code duplication and standardizing the team's stack.

Backend Developer at Macro Intell SA (2022-03 – 2025-06)

Contributed to backend development of TodoAgro, an agro marketplace with 15-microservice architecture.

• Contributed to the backend development of an agro marketplace (similar to MercadoLibre) in a team of 4 developers, building a 15-microservice architecture with orchestrating CI/CD pipelines via Jenkins and Docker.
• Modeled and optimized NoSQL schemas in MongoDB for key marketplace modules improving response performance by 20%; the project reached production during my time on the team.

Frontend Developer at Freelance / External Projects (2025-08 – Present)

Part-time frontend developer working on multiple production projects including Biolink and InboxVIP.

• Took over a live production project after the previous developer left: refactored the codebase, fixed bugs, improved performance, and implemented Python scrapers for automated data extraction from social media.
• Built new landing pages with SSR and full integration with backend and SQL database.
• Sole frontend developer on a private subscription messaging app (Telegram premium model): took over in production, built new components, refactored legacy code, and developed landings.

QA Automation Engineer at Various Projects (2022-01 – 2025-05)

Part-time QA automation engineer specializing in functional testing and REST API testing.

• Systematized functional test cases and REST API testing; integrated automated reports into CI pipelines, reducing manual validation time per release.

Bachelor's in Information Systems – Universidad Nacional del Nordeste – UNNE (2021)