Johan Vargas

Full Stack Developer with 2+ years of experience building scalable web applications, automating business processes, and integrating enterprise systems. Skilled in React, Node.js, Astro, PostgreSQL, SQL Server, Docker, and cloud technologies. Experienced in API integrations, database optimization, workflow automation, and ERP-related solutions.

Strong background collaborating with cross-functional teams to deliver software that improves operational efficiency, reporting, and data-driven decision making.

Software Development Intern - SOIN - San José, Costa Rica

(2026-02)

• Automated ERP reporting workflows, reducing manual processing and improving operational visibility.
• Developed full-stack applications using React, Node.js, Astro, PostgreSQL, and Docker.
• Integrated Jira APIs to automate worklog collection and synchronization with internal time-tracking systems.
• Built monitoring and analytics tools to track epics, activities, and project deviations across historical and weekly periods.
• Optimized PostgreSQL queries and database operations, improving application performance and data retrieval efficiency.
• Integrated multiple enterprise APIs to centralize operational data and automate business processes.
• Collaborated with ERP, development, and business teams in an Agile environment to gather requirements and deliver software solutions.

Software Developer - Constructora verde caribe - Limón, Costa Rica

(2024-12 - 2025-08)

• Designed and implemented a website using React (frontend) and Node.js (REST API), integrating MySQL and cloud services for scalability.
• Contributed to the full development lifecycle: design, coding, testing, and deployment in cloud environments.
• I experimented with 3D modeling and collaborated with designers.

Software Developer - Instituto Tecnológico de Costa Rica - Limón, Costa Rica

(2020-06)

• Full-stack development using React, Node.js, and SQL Server, focused on performance, scalability, and security.
• Designed and implemented data workflows and platform integration using APIs and cloud services.
• Improved backend performance through query optimization.
• Gained hands-on experience with cloud platforms (AWS, Azure)
• Collaborated in agile teams, working closely with multidisciplinary stakeholders.

Bachelor's Degree - Computer Engineering - Tecnológico de Costa Rica (2026-07)