Roberto Salazar

ROBERTO SALAZAR Senior Full-Stack Developer E - - Nicanor Reyes St, Metro Manila, 412 Sampaloc, Manila SUMMARY SKILLS Senior Full Stack Developer with over 7 years of experience, specializing in MERN/MEAN stack and quite familiar with frameworks such as ASP.Net, SpringBoot, Django, Laravel also CMS with a focus on expanding technical boundaries and integrating AI solutions. Proven track record of delivering scalable, high-performance web applications across diverse industries, including ecommerce, healthcare, fintech, and e-learning. Expertise in AI integration, cloud-native development, and microservices architecture. Strong collaboration and mentorship skills as a Senior Full Stack Developer, encouraging teams to achieve technical excellence. Proficient in almost modern web frameworks with hands-on experience in AWS, Docker, and Kubernetes. Adept at solving complex technical challenges, optimizing system performance, and delivering measurable business outcomes. React, Angular, TypeScript, Vue Mercari GMO Pepabo Loco Partners, hybrid 08/2020 - 01/2022 Fukuoka, remote 11/2018 - 08/2020 Tokyo, hybrid At Loco Partners, I stepped into the role of a Full Stack Developer for HealthTrack, I contributed to the backbone of the project. I participated in the backend development crafting a robust system that handled sensitive patient data with precision. On the frontend, I brought the platform to life with Angular, ensuring clinics could manage records and appointments effortlessly. • Implemented role-based access control (RBAC), ensuring 100% data security. • Optimized database queries, reducing latency by 37% using PostgreSQL indexing. • Integrated real-time notifications using WebSockets. • Migrated legacy systems to a modern stack with zero data loss. • Achieved 99.9% uptime through load balancing and fault. Web Developer BrainPad, on site 08/2017 - 10/2018 Tokyo, on site At BrainPad, I was the driving force behind e-commerce project's frontend architecture. I took charge of building a dynamic, user-friendly interface with React.js, ensuring the platform wasn’t just functional but also a joy to use. I also was part of the integration of RESTful APIs, making sure the frontend and backend communicated flawlessly, setting the foundation for a scalable ecommerce solution. • • • CMS, WordPress, Shopify MongoDB, PostgreSQL, Redis WebGL, Three.js Flutter, React Native Tokyo, hybrid At GMO Pepabo,I contributed to the architect of PayFlow, a payment platform that redefined security and efficiency. As a Full Stack Developer, I participated in integrating AI for fraud detection, a feature that became the heart of the platform. I also designed and implemented a microservices architecture, transforming the system into a scalable, high-performance solution that could handle the demands of modern fintech. • Integrated AI-based fraud detection using TensorFlow.js, achieving 95.1% accuracy. • Implemented microservices architecture, improving scalability by 60%. • Reduced API latency by 35% using GraphQL. • Automated testing, achieving 93% test coverage. • Migrated to AWS, reducing infrastructure costs by 25%. Full-Stack Web Developer Django, Flask, Ruby on Rails AWS, GCP, Docker, Kubernetes 02/2022 - 11/2024 At Mercari, I built an e-learning platform—LearnIQ. As a Senior Full Stack Developer, I led the integration of AI/ML models, turning raw data into personalized learning paths. I was responsible for key features in the full-stack development process, using the MERN stack to create a platform that wasn’t just functional but also intelligent and adaptive. My role wasn’t just about writing code but creating an experience that empowered learners and educators alike. • Integrated AI-based recommendation engine, improving course suggestions by 56%. • Optimized backend performance, handling over 10,000 concurrent users. • Implemented JWT/OAuth-based authentication, ensuring 100% secure access. • Reduced server costs by 20.6% using serverless architecture. • Achieved 99.99% uptime using AWS Lambda and CloudFront. Full-Stack Developer ASP.Net, SpringBoot, Laravel Git, Jest, Cypress EXPERIENCE Full-Stack Developer Node.js, Express.js, Node.js, Nest.js Implemented responsive design, achieving 100% mobile compatibility with CSS, Flexbox, JavaScript. Reduced page load time by 25.3% through code splitting and lazy loading in React. Integrated secure payment gateways (Stripe, PayPal) with zero downtime during peak traffic. EDUCATION Bachelor in Computer Science Tokyo Institute of Technology 06/2013 - 06/2017 • • • • Data Structures and Algorithms Web Development Machine Learning/Artificial Intelligence Computer Network/Internet of Things LANGUAGES English Proficient Japanese Filippino Native Intermediate PASSIONS Innovating Customer Experiences Community Development Sustainable Technology STRENGTHS Problem Solving Team Collabration Communication Continuous Learning