Ernst Christian Catedral
PRO
Available to hire
I am Ernst Christian Catedral, a Senior Full Stack Engineer with over 8 years of experience delivering scalable enterprise-grade web applications. I excel at building modular React + TypeScript architectures, leading teams, and collaborating with product and UX to translate complex requirements into intuitive user experiences. I am passionate about leveraging cloud-native tech, modern CI/CD practices, and robust testing to drive innovation while maintaining quality and security.
Currently, I mentor junior developers, design scalable frontend ecosystems, and design intuitive interfaces for complex healthcare and software workflows. I enjoy partnering with UX designers to improve usability and implement real-time features (WebSockets) and reliable API integrations that streamline operations across legacy and modern systems.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Language
English
Fluent
Work Experience
Fullstack Engineer at Quorini
August 1, 2024 - June 24, 2024Responsible for frontend and backend development of the Quorini platform, a developer-centric API access and user provisioning management tool. Architected a modular React component library using TypeScript for scalability and performance. Implemented complex UI state management with XState and Redux, integrated real-time features using WebSockets, and maintained micro frontends to promote team autonomy. Engineered TypeScript SDK components for seamless third-party API integration. Orchestrated CI/CD pipelines with GitHub Actions and AWS CodePipeline, deployed serverless backend services using AWS Lambda, S3, and API Gateway. Integrated AWS Cognito for authentication and multi-tenant user management. Employed AWS Amplify for hosting and CI/CD, plus developed real-time permission editing UI. Collaborated on enterprise security compliance and authored unit and integration tests utilizing Jest and Cypress. Monitored application health with AWS CloudWatch and mentored junior developers thr
Fullstack Engineer | Tech Leader at IKI Health Group
March 1, 2022 - April 30, 2024Led a five-developer team to build a healthcare management platform, improving patient data processing speed by 40%. Architected a microservices-based backend with Node.js and AWS Lambda, reducing server costs by 30%. Implemented real-time data synchronization using WebSockets to enhance user experience by 25%, and developed a custom React and Redux dashboard to increase admin efficiency by 35%. Integrated payment APIs, optimized database queries, and established CI/CD pipelines with GitHub Actions to improve deployment efficiency. Conducted code reviews and mentoring sessions to increase productivity and designed a secure authentication system with AWS Cognito, lowering security incidents by 40%. Collaborated with UX designers to boost usability and satisfaction. Monitored performance using AWS CloudWatch to minimize downtime and increased test coverage by 50% via Jest and Cypress. Developed a scalable notification system to improve communications by 35%.
Fullstack Developer at Hofy
January 1, 2021 - March 1, 2022Developed a property management platform using React and Node.js that increased user engagement by 30%. Implemented real-time chat with WebSockets, improving customer support response times by 40%. Enhanced frontend performance by reducing load times by 35%. Integrated third-party APIs for property listings to expand database coverage by 50%. Designed responsive UI using CSS3 and HTML5, improving mobile UX by 25%. Established automated testing with Mocha increasing test coverage by 40%, optimized API responses to reduce latency by 30%, and developed a custom admin dashboard increasing operational efficiency by 35%. Conducted performance audits and mentored junior developers to elevate coding standards.
Frontend Developer at Sprout Solutions
April 1, 2017 - December 31, 2020Developed a HR management system with Angular.js, improving employee onboarding efficiency by 30%. Implemented responsive design to increase mobile engagement by 25% and optimized frontend code to reduce load times by 40%. Integrated RESTful APIs for faster data retrieval and collaborated with UX designers to enhance usability and increase user satisfaction by 20%. Conducted code reviews that improved code quality by 25% and developed a reporting module increasing admin efficiency by 30%.
Internship Trainee at Taxumo
March 1, 2016 - February 28, 2017Assisted in developing a tax management platform using PHP and Laravel, improving data processing speed by 20%. Implemented frontend components with HTML5 and CSS3 enhancing the UI by 15%. Conducted testing and debugging reducing bug reports by 25% and collaborated with senior developers on new feature development to boost team productivity by 10%. Participated in code reviews and learned best practices to improve coding skills.
Fullstack Engineer at Quorini
August 1, 2024 - June 4, 2024Responsible for frontend and backend development of the Quorini platform, a developer-centric tool for API access management and user provisioning. Architected a modular React component library using TypeScript, implemented complex UI state management with XState and Redux, and integrated real-time WebSockets features. Developed micro frontends to promote team autonomy, engineered SDK components for external developer integration, and orchestrated CI/CD pipelines using GitHub Actions and AWS CodePipeline. Deployed serverless backend services on AWS Lambda, S3, and API Gateway, integrated AWS Cognito for authentication and multi-tenant management, and utilized AWS Amplify for optimized hosting. Collaborated with DevOps and product teams to meet security standards, wrote unit and integration tests with Jest and Cypress, monitored application health via AWS CloudWatch, and mentored junior developers through code reviews and knowledge sharing.
Fullstack Engineer | Tech Leader at IKI Health Group
March 1, 2022 - April 30, 2024Led a team of 5 developers in building a healthcare management platform that improved data processing speed by 40%. Architected a microservices backend using Node.js and AWS Lambda, reducing server costs by 30%. Implemented real-time data sync with WebSockets, developed custom dashboards with React and Redux to improve admin efficiency, and integrated third-party payment APIs. Optimized database queries, created CI/CD pipelines with GitHub Actions, and implemented secure authentication using AWS Cognito. Collaborated closely with UX designers to enhance usability and monitored application performance with AWS CloudWatch. Improved team productivity through mentoring and code reviews, increased test coverage using Jest and Cypress, and developed a scalable notification system.
Fullstack Developer at Hofy
January 1, 2021 - March 1, 2022Developed a property management platform using React and Node.js, increasing user engagement by 30%. Implemented real-time chat features using WebSockets, optimized frontend performance to reduce load times, and integrated third-party APIs for property listings. Designed responsive UI with CSS3 and HTML5, and implemented automated testing with Mocha. Collaborated with backend developers to optimize API responses and developed a custom admin dashboard for enhanced operational efficiency. Conducted performance audits to identify bottlenecks and mentored junior developers for improved coding standards.
Frontend Developer at Sprout Solutions
April 1, 2017 - December 31, 2020Developed an HR management system using Angular.js, improving employee onboarding efficiency by 30%. Implemented responsive designs that increased mobile engagement, optimized frontend code for faster load times, and integrated RESTful APIs to improve response times. Collaborated with UX designers to enhance interface usability and conducted code reviews to improve code quality. Developed a custom reporting module to increase administrative efficiency.
Internship Trainee at Taxumo
March 1, 2016 - February 28, 2017Assisted in developing a tax management platform using PHP and Laravel, improving data processing speed. Implemented frontend components with HTML5 and CSS3, conducted testing and debugging to reduce bugs, and collaborated with senior developers on feature development. Participated in code reviews and gained experience in coding best practices.
Fullstack Engineer at Quorini
August 1, 2024 - PresentResponsible for frontend and backend development of the Quorini platform—a developer-centric tool for API access management and user workflows. Architected modular React component libraries with TypeScript, managed complex UI state with XState and Redux, integrated real-time communication with WebSockets, and developed micro frontends to promote team autonomy. Engineered SDK components for external integration, implemented CI/CD pipelines using GitHub Actions and AWS services, deployed serverless backend with AWS Lambda, integrated authentication with AWS Cognito, and utilized AWS Amplify for hosting and deployment. Mentored junior developers and ensured enterprise-grade security and compliance with AWS CloudTrail and monitoring using AWS CloudWatch.
Fullstack Engineer | Tech Leader at IKI Health Group
April 30, 2024 - July 10, 2025Led development of scalable e-commerce platform for health products, increasing sales by 35%. Implemented responsive design to improve mobile engagement by 40%, integrated secure payment gateways reducing transaction failures by 25%, optimized inventory management and order tracking, and mentored a team of 5 developers. Established CI/CD pipelines to cut deployment times by 50%, designed microservices architecture enhancing system reliability by 45%, and leveraged AWS services for cloud scalability and cost reduction. Collaborated on UI/UX improvements, developed RESTful APIs, and boosted conversion rates and business partnerships.
Fullstack Developer at Hofy
March 1, 2022 - July 10, 2025Built and maintained high-performance e-commerce platform, increasing user retention by 30%. Implemented responsive design for mobile conversion, integrated secure payments, developed custom inventory features, optimized backend APIs, and real-time order tracking. Collaborated with marketing to boost sales, conducted code reviews, mentored juniors, deployed AWS cloud solutions, and implemented automated testing to reduce bugs.
Frontend Developer at Sprout Solutions
December 31, 2020 - July 10, 2025Developed responsive e-commerce interfaces enhancing user engagement and checkout success. Optimized frontend performance, implemented UI/UX best practices, collaborated on API integrations, conducted A/B testing for improved conversion rates, and mentored junior developers to increase team efficiency.
Internship Trainee at Taxumo
February 28, 2017 - July 10, 2025Assisted in developing e-commerce features contributing to increased sales, applied responsive design principles, supported backend development, participated in code reviews, and gained experience with payment gateway integrations enhancing transaction success.
Full Stack Engineer at Quorini
August 1, 2024 - PresentResponsible for frontend and backend development of the Quorini platform, a developer-centric tool for API access management and user provisioning workflows. Architected a modular and reusable React component library using TypeScript. Implemented complex UI state management with XState and Redux. Integrated real-time communication features with WebSockets. Developed micro frontends to promote faster feature releases and team autonomy. Engineered SDK components for secure external developer integrations. Orchestrated CI/CD pipelines using GitHub Actions and AWS CodePipeline. Deployed serverless backend services with AWS Lambda, S3, and API Gateway. Integrated AWS Cognito for authentication and multi-tenant user management. Used AWS Amplify for hosting and CI/CD. Designed real-time permission editing interfaces using React. Developed and documented internal and public SDKs. Collaborated with DevOps and product teams to meet enterprise security and compliance standards. Wrote unit and int
Fullstack Engineer | Tech Leader at IKI Health Group
April 30, 2024 - July 21, 2025Led frontend development of a healthcare platform, improving performance and accessibility, increasing adoption by 35%. Built scalable React-based frontend architecture integrated with backend microservices, reducing latency by 25%. Mentored and managed a small frontend team, increasing team output by 30%. Implemented real-time data visualization for healthcare analytics, boosting user engagement by 40%. Optimized platform for cross-browser compatibility and responsive design, reducing bounce rates by 20%. Integrated third-party APIs for patient data management, cutting administrative time by 30%. Developed UI design system to promote consistency and reusability, accelerating development cycles by 25%. Collaborated with UX designers to improve usability by 35%. Implemented automated tests reducing bugs by 40%. Deployed on AWS with ECS and Lambda, reducing infrastructure costs by 20%. Conducted performance audits to improve user satisfaction by 30%. Established coding standards, reducin
Full Stack Developer at Hofy
March 1, 2022 - July 21, 2025Developed healthcare platform using React and Node.js focusing on user-friendly interfaces and robust backend services, increasing user retention by 25%. Built reusable UI components with TypeScript, reducing development time by 20%. Integrated RESTful APIs enhancing system reliability by 30%. Implemented authentication and authorization with JWT, reducing unauthorized access by 40%. Optimized platform for mobile devices, increasing mobile traffic by 35%. Collaborated with designers to improve usability by 25%. Conducted code reviews and pair programming reducing bug rates by 30%. Deployed platform using Docker and Kubernetes, improving uptime by 20%. Monitored performance using AWS CloudWatch, enhancing system efficiency by 25%. Participated in agile ceremonies increasing sprint completion rates by 30%.
Frontend Engineer at Sprout Solutions
December 31, 2020 - July 21, 2025Developed and maintained frontend applications using Angular.js and React, improving user satisfaction by 20%. Implemented state management solutions using Redux, reducing bugs by 25%. Collaborated with backend developers for API integration enhancing system performance by 30%. Optimized applications for speed and scalability reducing bounce rates by 15%. Conducted usability testing improving user engagement by 20%. Mentored junior developers boosting team productivity by 25%. Participated in code reviews and sprint planning increasing sprint completion rates by 30%.
Internship Trainee at Taxumo
February 28, 2017 - July 21, 2025Learned fundamentals of frontend development including HTML, CSS, and JavaScript, building a strong foundation. Assisted in developing small features, improving technical skills by 30%. Participated in code reviews and team meetings enhancing teamwork abilities by 25%. Shadowed senior developers increasing knowledge retention by 20%. Completed assigned tasks demonstrating commitment and growth, leading to a positive performance review.
Fullstack Engineer at Quorini
August 1, 2024 - PresentResponsible for frontend and backend development of the Quorini platform, a developer-centric tool to streamline API access management and user provisioning workflows. Architected a modular React component library using TypeScript, implemented complex UI state management with XState and Redux, and integrated real-time communications using WebSockets. Developed SDK components for external developers, orchestrated CI/CD pipelines using GitHub Actions and AWS CodePipeline, and deployed serverless backend services with AWS Lambda, S3, and API Gateway. Integrated AWS Cognito for authentication and user management, utilized AWS Amplify for seamless hosting, and collaborated with DevOps and product teams to meet enterprise security standards. Mentored junior developers and maintained robust test coverage with Jest and Cypress.
Fullstack Engineer | Tech Leader at IKI Health Group
April 30, 2024 - August 2, 2025Led development of a healthcare platform, improving patient engagement by 40% with intuitive UI/UX design. Integrated third-party APIs, reducing manual entry by 60%, and optimized backend performance with efficient database queries, reducing server response time by 30%. Implemented secure OAuth 2.0 authentication, developed real-time appointment notification systems, and designed scalable microservices architecture enhancing system reliability by 35%. Automated CI/CD pipelines with Jenkins, mentored junior developers improving code quality, performed A/B testing for features, integrated analytics for data-driven decisions, redesigned mobile-responsive frontend increasing mobile traffic by 45%, and collaborated with stakeholders to align project requirements with business goals.
Fullstack Developer at Hofy
March 1, 2022 - August 2, 2025Developed a property management platform increasing user engagement by 30% through responsive design. Integrated Stripe and PayPal for payments, built a custom WordPress CMS, optimized database queries improving page load times by 40%, implemented secure user authentication, created interactive dashboards for property owners, automated report generation saving 20 hours monthly, collaborated with UX designers, deployed application on AWS for scalability, and conducted performance audits to resolve bottlenecks.
Frontend Developer at Sprout Solutions
December 31, 2020 - August 2, 2025Developed an HR management system improving onboarding efficiency by 50%. Implemented responsive design for seamless multi-device access, integrated third-party HR tools reducing manual data entry by 40%, optimized frontend performance reducing load times by 30%, created reusable UI components speeding development by 25%, collaborated with backend teams for API integration, and conducted user training to improve adoption rates.
Internship Trainee at Taxumo
February 28, 2017 - August 2, 2025Assisted in developing a tax management platform improving user experience by 20%. Fixed frontend bugs to enhance stability, participated in code reviews learning best practices, supported testing new features, and documented development processes to improve team efficiency.
Full Stack Engineer at Quorini
August 1, 2024 - PresentResponsible for frontend and backend development of the Quorini platform, a developer-centric tool designed to streamline API access management and user provisioning workflows. Architected a modular React + TypeScript frontend library, integrated with backend microservices, and established secure API access controls and provisioning workflows. Implemented real-time feedback, dashboards, and monitoring integrations to support product teams and partners.
Tech Lead / Full Stack Engineer at IKI Health Group
April 30, 2024 - October 3, 2025Led end-to-end frontend and backend development of a healthcare platform, improving accessibility and performance. Designed and implemented a scalable React + TypeScript frontend with backend microservices. Built real-time health analytics visuals, implemented JWT-based authentication, and established a comprehensive UI design system. Mentored junior developers, implemented Jest and Cypress tests, and deployed on AWS (ECS/Lambda) with CloudWatch monitoring; collaborated with UX designers to optimize workflows.
Full Stack Developer at Hofy
March 31, 2022 - October 3, 2025Developed a healthcare platform using React and Node.js, focusing on user-friendly interfaces and robust backend services; increased user retention by 25%. Built reusable UI components with TypeScript, ensured consistency, and reduced development time by 20%. Integrated RESTful APIs for data exchange, improved system reliability by 30%, and implemented authentication using JWT to reduce unauthorized access incidents by 40%. Optimized mobile experiences, increasing mobile traffic by 35%. Collaborated with UX designers to streamline health care workflows.
Frontend Engineer at Sprout Solutions
December 31, 2020 - October 3, 2025Developed frontend applications using Angular.js and React, delivering high-quality user interfaces and improving user satisfaction by 20%. Implemented Redux for state management, enabling multi-scene flows and reducing bugs by 25%. Collaborated with backend teams to integrate APIs, improving system reliability by 30%. Optimized apps for speed and scalability, reducing bounce rate by 15%. Wrote unit tests, conducted pair programming, and mentored junior developers; deployed on AWS (ECS/S3) with CloudWatch monitoring; improved team productivity by 25%.
Intern at Taxumo
February 28, 2017 - October 3, 2025Learned frontend fundamentals (HTML, CSS, JavaScript) and contributed small features to the company platform. Gained hands-on experience, participated in code reviews and team meetings, and built foundational skills contributing to project milestones.
Education
Bachelor of Technology at Ateneo de Davao University
January 1, 2011 - December 31, 2015Bachelor of Technology (BTech) in Computer Software Engineering at Ateneo de Davao University
January 1, 2011 - January 1, 2015Qualifications
Industry Experience
Software & Internet, Healthcare, Real Estate & Construction, Financial Services, Retail, Professional Services, Consumer Goods, Computers & Electronics
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
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