Juan C.
Senior Full Stack Developer
Open to offersNew to PlatformAbout
Juan Carlos A. is a seasoned Full Stack Developer with over 8 years of experience specializing in financial and enterprise systems development. He has a proven track record in building robust banking platforms with Java and Spring Boot microservices, complemented by front-end expertise using React.js. His proficiency in Clean Architecture and Domain-Driven Design (DDD) positions him as an integral contributor to international teams, having led code reviews and architectural decisions among groups of 40+ engineers. Juan Carlos's work includes creating fraud-aware, cloud-native, and scalable banking solutions, fostering secure API integrations, and enhancing distributed tracing using DataDog. His experience spans diverse fintech environments, where he has navigated complex integrations with services such as BioCatch and developed modular UI architectures. Bilingual in Spanish and English, Juan Carlos is remote-ready and available for opportunities globally, particularly within the LATAM region.
Experience
Full Stack Developer
SoFi / Technisys (Galileo) · 2024 — 2026Engineered microservices for LATAM digital banking platforms with high user concurrency. Implemented secure integrations with BioCatch for fraud detection and third-party banking APIs. Developed crucial use cases including session management and token handling. Built API connectors and enhanced observability for microservices through DataDog. Contributed to architectural decisions and PR governance, adhering to Clean Architecture and DDD standards. Maintained React.js web banking applications with a focus on modular architecture and integrated behavioral fraud detection into various user flows.Full Stack Engineer
WorkLlama · 2023 — 2024Developed features for a cloud-native, AI-driven workforce platform utilizing Node.js/NestJS and React.js. Created SSR-enabled React.js components and integrated them with backend APIs. Maintained RESTful APIs and collaborated with AI teams to integrate machine learning pipelines. Upheld code quality through TDD practices and established secure API integrations on AWS and GCP.Full Stack Developer
W2G Logistics — via BairesDev (USA) · 2022 — 2023Constructed backend services for logistics systems using Node.js/NestJS and managed GCP infrastructure. Developed frontends with React.js for internal logistics dashboards while ensuring secure connections to external platforms through REST APIs. Contributed to the transition of core backend modules from Java to Node.js and implemented CI/CD pipelines on Docker within GCP.Backend Engineer / Scrum Master
TessPay Inc (USA) · 2021 — 2022Developed web applications and established AWS cloud infrastructure using React.js and Node.js/NestJS. Optimized APIs to enhance performance and reduce operational costs. Led sprint planning and managed team coordination as Scrum Master.IT Systems Coordinator — Team Lead
Cooperativa de Ahorro y Crédito CREA · 2019 — 2021Led a team in migrating legacy banking systems to a cloud-based architecture on OCI. Integrated external credit APIs while managing deployment pipelines utilizing Git and Docker for core banking functionalities.Backend Engineer
Cooperativa JEP · 2016 — 2018Developed banking modules in Java and PHP, later transitioning to Node.js, and assembled REST and SOAP APIs. Gained extensive experience in fintech, focusing on credit products and integrations with central banking systems.
Skills & Expertise
Education
- Bachelor of Engineering in Systems / Software EngineeringUniversidad Politécnica Salesiana
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