Fullstack Developer, Network/OS Engineer, CMS Expert

David Tamayo Urrego

Full Stack Engineer

Colombia *****************@*****.*** /in/david-tamayo-urrego-b7682b374 PROFESSIONAL SUMMARY

Full Stack Engineer with 9+ years of experience building web applications using React, Vue, Spring Boot, Gin, Django, and cloud platforms like AWS and GCP. Delivered systems that process over 50,000 transactions daily and reduced infrastructure costs by 15%. Strong focus on performance, maintainability, and clear code. Worked on both frontend and backend for microservices, internal tools, and data platforms across remote teams. TECHNICAL SKILLS

Languages: JavaScript, TypeScript, Python, Java, Go, SQL, HTML5, CSS3, Shell Script Frontend Frameworks/Libraries: React, Next.js, Angular, Vue.js, NestJS, Tailwind CSS, Zustand, TanStack Backend Frameworks: Node.js, Express.js, Django, Flask, FastAPI, Spring Boot, Gin, Fiber, Echo Cloud & DevOps: AWS, Google Cloud Platform (GCP), Docker, Kubernetes, Jenkins, GitHub Actions, CI/CD Databases: PostgreSQL, MongoDB, MySQL, OracleDB

Testing & QA: Jest, Cypress, Mocha, Selenium, Automated Testing Other Technologies: REST APIs, GraphQL, Figma, Cyber Security, Microservices, Git, Linux, Network/OS Engineering Methodologies: Agile Scrum, Remote Collaboration

PROFESSIONAL EXPERIENCE

Full Stack Engineer Aug 2023 – Oct 2025

Rootstack Medellín, Colombia (Hybrid)

• Migrated legacy systems to GCP microservices with modern software architecture, reducing costs by 15% and downtime by 70%, while creating documented migration procedures that standardized future transitions across a $2M infrastructure budget.

• Built backend services in Node.js and PostgreSQL handling 50K+ daily financial transactions across U.S. and EU markets, improving cross-border transaction success rates by 12%.

• Developed and maintained 30+ reusable React components with responsive design principles, enhancing UI efficiency and ensuring consistency across 6 internal applications.

• Reported directly to the VP of Engineering while mentoring 5 junior engineers, leading code review practices that cut onboarding time from 3 months to 5 weeks and strengthened team alignment with business goals.

• Orchestrated quarterly feature rollouts across 3 teams, delivering new customer-facing features with a 95% on-time release rate that directly addressed findings to fix the three biggest causes of customer churn.

• Aligned engineering efforts with business objectives by facilitating requirement workshops, ensuring clarity between stakeholders and engineers while guiding technical trade-off discussions.

• Investigated system anomalies through log analysis, integration testing, and performance tracing, uncovering root causes that reduced error rates by 18% and advising teams on preventive patterns.

• Directed cross-functional release coordination across engineering, QA, and DevOps groups by applying DevOps practices, eliminating recurring deployment delays and improving delivery predictability. Full Stack Engineer Dec 2021 – Jun 2023

Resolve studio Bogotá, Colombia (Remote)

• Engineered 8 SPAs with Vue.js, HTML, and Django for healthcare and e-commerce clients, supporting platforms with 500K+ monthly users and directly improving customer onboarding speed by 20%.

• Upgraded AWS cloud services with auto-scaling and monitoring, increasing uptime by 3% and reducing hosting costs by 18%, ensuring compliance with HIPAA security requirements.

• Collaborated across 3 Agile teams (25+ engineers) in sprint planning and retrospectives, aligning project delivery with client release deadlines.

• Increased test coverage from 45% to 85% through unit testing and automated suites, reducing QA bugs by 25% and cutting regression testing cycles by 30%.

• Refactored Angular frontend using HTML and CSS to reduce load time by 15% with lazy loading and optimized change detection.

• Tuned backend microservices to handle over 800K API requests daily with improved response latency.

• Assembled CI/CD pipelines with Jenkins and Docker, establishing continuous integration and deployment workflows that cut manual deployment errors by 30%.

• Resolved over 100 production issues by debugging backend and frontend systems, directly contributing to maintaining a 99.8% service uptime SLA.

Junior Full Stack Engineer Aug 2020 – Sep 2021

Umbel Partners Sabaneta, Colombia (Onsite)

• Created e-commerce and logistics applications with React, Angular, Node.js, HTML, and MySQL, reducing page load times by 40%.

• Developed APIs for seamless integration with microservices and third-party platforms, supporting 1M+ concurrent users.

• Championed automated testing by introducing unit testing coverage, reducing post-launch issues by 30%.

• Streamlined deployments through continuous deployment processes, improving release speed by 25%.

• Engineered a new user authentication module with OAuth 2.0, increasing user sign-ups by 15%. EDUCATION

National University of Colombia Bogota, Colombia

Bachelor’s Degree Aug 2015 – Jun 2020

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