Rafael Takeshi

Rafael Takeshi Senior Full Stack Developer - - Cebu, Mango Street SUMMARY Senior DevOps Full Stack Developer with over 11 years of experience in designing and implementing scalable high-quality, tested, and documented applications using Object-Oriented Design principles and DevOps practices. Skilled in C++, JavaScript, TypeScript, Node.js, PHP, Java, Python, C#. Proven ability to enhance system reliability, reduce operational costs, and improve user satisfaction through cloud computing, CI/CD pipeline implementation, and team mentoring. Adept at leading teams, ensuring code quality, and optimizing performance in dynamic development environments. PROFESSIONAL EXPERIENCE DevOps Full Stack Engineer Zivelo • • • • • • Orange and Bronze Software Labs • • • • • • 10/2023 - 11/2024 Architected scalable systems with master-master replication, resulting in a 30% increase in system reliability. Designed cloud-based infrastructures with replication methodologies, achieving 99.99% uptime. Ensured cross-browser and cross-platform compatibility for responsive designs, increasing user satisfaction by 25%. Configured CI/CD pipelines with Jenkins and GitHub Actions, reducing deployment time by 50%. Deployed and maintained web and mobile applications on AWS and GCP, resulting in a 35% reduction in operational costs. Built E2E test scripts with JUnit, Selenium, and Cypress, achieving 95% code coverage. Full Stack Developer • • • • Scottsdale, United States Makati City, Philippines 01/2020 - 09/2022 Led over 20 projects as a full stack developer using MERN stack and Spring Boot, Laravel and Django, Flask, and various DBMS. Designed REST APIs to integrate external services, adhering to OAuth2 standards for secure data access. Conducted performance and security monitoring using New Relic, improving application stability and performance by 30%. Collaborated with cross-functional teams to implement new features and resolve critical incidents using efficient debugging and monitoring tools. Implemented GraphQL for efficient data fetching, improving data retrieval speed by 40%. Updated legacy codebases and added new features based on customer feedback, increasing user retention by 30%. Utilized Agile and Waterfall methodologies in project development, leading to a 20% improvement in project delivery times. Designed and implemented monitoring dashboards for distributed systems using ELK Stack and Grafana, identifying issues proactively. Automated infrastructure provisioning and configuration using Terraform and AWS CloudFormation, reducing deployment times by 30%. Partnered with development teams to implement CI/CD pipelines with Jenkins and Kubernetes, improving release frequency and reliability. Back End Developer TechSpring Innovations Toronto, Canada 11/2016 - 12/2019 • Designed and developed complex backend systems in PHP, MySQL, PostgreSQL, Oracle and Spring Boot, Express.js, MongoDB, enhancing system performance and reducing query times by 30%. • Optimized MySQL database queries, reducing response times by 25% and improving data handling. • Collaborated with frontend teams to integrate PHP backends with React-based UIs, ensuring seamless data flow. • Engineered secure RESTful API endpoints in PHP and JavaScript, enabling seamless third-party integrations with JSON and XML data formats. • Automated system monitoring and performance tuning scripts, improving fault detection and resolution time. • Automated testing workflows using PHP Unit, improving deployment reliability and reducing bugs in production. Front End Developer Manila, Philippines TechWave Innovations 06/2015 - 10/2016 • Developed applications and tools using React.js, Angular.js, Vue.js, achieving code abstraction, stability, and reuse goals by 40%. • Integrated frontend components with backend APIs for real time updates, increasing user engagement by 10%. • Improved system usability by developing interactive single-page applications with JavaScript and RESTful APIs. • Developed customer-facing single-page applications using HTML, CSS, JavaScript, and TypeScript, increasing client retention by 10%. • Developed technical workflows to educate and train new hires, reducing onboarding time by 40%. Junior PHP Developer Symph • Developed backend functionalities for web applications using PHP and MySQL. • Worked on REST API integrations, handling JSON and XML data for third-party services. • Gained experience in deploying applications on Heroku and AWS for cloud-based projects. Cebu City, Philippines 08/2013 - 05/2015 EDUCATION Bachelor's Degree in Computer Science Kochi University of Technology • Basic Programming • Language C/C++ • Assembly Language • Web Development Software Engineering SKILLS Programming Languages: JavaScript, TypeScript, C++, C#, Python, Java, Bash Cloud & Infrastructure: AWS (EC2, S3, CloudWatch, Lambda, RDS), Terraform, AWS CloudFormation Distributed Systems: Ceph, HDFS, NFS, Amazon S3, Kubernetes, ArgoCD Monitoring & Performance: ELK Stack, Grafana, AWS CloudWatch, Performance Tuning API Integration: Third-party APIs, Payment Gateways, Authentication APIs Project Management Tools: Jira, Confluence, Trello LANGUAGES English, Japanese STRENGTHS Team Collaboration Problem Solving Established effective communication and increased team cohesion, resulting in 20% faster project completion. Identified and resolved complex issues with code efficiency. Japan 09/2009 - 07/2013