A global leader in the building, civil works, energy, and services sectors. Established to provide high-quality IT services, BYCN IT VN focuses on software development, system monitoring, security, and user support.• Created an enterprise Employee Management System using Java, Spring Boot, Angular, PrimeNG UI, MS SQL, SonarQube, Azure Active Directory, and Git, reducing paperwork by 70% and improving approval times by 60%.• Developed a web application for validating concrete quality using Java, JSF, Primefaces, enhancing issue reporting efficiency, leading to a 40% reduction in response time for concrete quality issues.• Maintained a vigilance management system using Java helping with monitoring, reporting issues via mobile app with photos, resulting in a 30% increase in operational efficiency.• Resolved security issues based on the top 10 OSWAP report for a web application, streamlining document management processes, reducing manual errors by 60% and improving notification response times by 45%.• Implemented a service based on Java, OpenID Connect (OIDC), and OAuth2, transitioned to Azure Active Directory (Azure Entra ID) for all the projects, enhancing security and reducing authentication issues by 35%.

Specializes in digital transformation solutions, leveraging Agile and Lean methodologies. The company offers consulting services and AI-powered solutions designed to enhance efficiency and effectiveness.• Contributed (https://gitlab.com/users/nhatlv/activity) to the Conformance Suite (https://gitlab.com/openid/conformance-suite/) using Java, Spring Boot, OpenID Connect, OAuth2 and other technologies, an open-source project managed by the OpenID Foundation, resolving 80 issues and successfully released milestones for FAPI tests, and CIBA-v1.• Implemented video call feature in a healthcare system with JavaScript, TypeScript, React.js, AWS, and Twilio Video API, which facilitates video call connections between patients, doctors, clinics, and hospitals, boosting user satisfaction by 50% and reducing connection issues by 60% during COVID-19.• Designed and deployed an eKYC solution for Japanese financial institutions using .Net Core, Vue.js, Azure Cloud Services, and biometric authentication, reducing account opening time by 50% and enhancing security compliance by 45%.

A Japanese agile software development and offshore company.• Developed and maintained an e-commerce web application using Java, Spring MVC, jQuery, MySQL, and other technologies, enabling users to rent or purchase properties, achieving a 60% increase in user engagement.• Improved an entertainment web application using Java, Spring Boot, AngularJS, and other technologies, allowing users to listen to music, watch movies, sing karaoke, and buy or rent DVDs/VCDs, improving user satisfaction and user engagement by 50%.• Collaborated with teams in Japan and Vietnam to develop and maintain the Dartslive Search web application (https://search.dartslive.com/), using various technologies, which supports users in easily finding the nearest shop and visiting them, increasing user visits by 50%.• Optimized the loading time for a CMS system using various technologies, which enables users to rent or purchase properties, including houses and apartments, resulting in a 50% increase in user visits.