Hi, I am Hieu
(Harry)
4 years building modern web applications. Passionate about solving real problems and continuously learning through hands-on development.
About
I'm a Software Engineer based in Ho Chi Minh City with 4 years of experience building modern web applications. I specialise in front-end development with a strong focus on clean UI, performance, and developer experience. I enjoy working in collaborative teams, taking ownership of features end-to-end, and continuously learning new technologies.
Name
Ho Dac Hieu (Harry)
Address
Ho Chi Minh City, Vietnam
Phone
+84902233257Telegram
@hdh13300Skills
Languages
Frontend
Backend & Database
Testing & Tools
Experience
Rikkeisoft
HRM Management System
Software Engineer
An internal HR management platform handling employee data, permissions, and cross-border integrations with partner systems. As a Software Engineer, I designed and published internal APIs, enhanced permission controls and data validation for secure API reuse, and generated YAML-based documentation integrated with Scalar UI. I also integrated a third-party AI library to automate data generation, wrote unit tests for delivered features, and resolved data transfer manager issues while collaborating with the overseas development team to maintain delivery quality.
HRM Management System
Software Engineer
An internal HR management platform handling employee data, permissions, and cross-border integrations with partner systems. As a Software Engineer, I designed and published internal APIs, enhanced permission controls and data validation for secure API reuse, and generated YAML-based documentation integrated with Scalar UI. I also integrated a third-party AI library to automate data generation, wrote unit tests for delivered features, and resolved data transfer manager issues while collaborating with the overseas development team to maintain delivery quality.
Appointment Booking System
Software Engineer
A scheduling platform that allows organizers to manage appointments with visitors, backed by Google Calendar synchronization. As a Software Engineer, I implemented the OAuth 2.0 authorization flow and integrated the Google Calendar API to keep appointments in sync with users' personal calendars. I also developed an appointment synchronization flow with automated email notifications, built a PAD device scan workflow to track visitor check-ins and meeting room access, maintained core APIs, and conducted code reviews across front-end and back-end.
Appointment Booking System
Software Engineer
A scheduling platform that allows organizers to manage appointments with visitors, backed by Google Calendar synchronization. As a Software Engineer, I implemented the OAuth 2.0 authorization flow and integrated the Google Calendar API to keep appointments in sync with users' personal calendars. I also developed an appointment synchronization flow with automated email notifications, built a PAD device scan workflow to track visitor check-ins and meeting room access, maintained core APIs, and conducted code reviews across front-end and back-end.
Tego Global JSC
Perkify CRM
Front-end Engineer
A customer loyalty CRM platform that helps businesses manage contacts, run campaigns, and build landing pages through a no-code website builder. As a Front-end Engineer, I migrated and enhanced features from the legacy system, implemented a media uploader that reduced duplicated file uploads by 30%, and resolved bugs across contact filters, smartlists, and custom contact lists. A key contribution was leveraging GrapeJS to introduce drag-and-drop functionality similar to Canva, reducing website creation time by up to 50% compared to the previous version.
Perkify CRM
Front-end Engineer
A customer loyalty CRM platform that helps businesses manage contacts, run campaigns, and build landing pages through a no-code website builder. As a Front-end Engineer, I migrated and enhanced features from the legacy system, implemented a media uploader that reduced duplicated file uploads by 30%, and resolved bugs across contact filters, smartlists, and custom contact lists. A key contribution was leveraging GrapeJS to introduce drag-and-drop functionality similar to Canva, reducing website creation time by up to 50% compared to the previous version.
Vivas Leisure CRM
Front-end Engineer
A CRM platform designed for gyms and fitness clubs to manage members, automate outreach, and send targeted email campaigns. As a Front-end Engineer, I built a visual workflow automation module using Reactflow in collaboration with a team of 5 developers, eliminating redundant manual processes and saving up to 30% of admin time in client outreach and opportunity tracking. I also implemented two types of email editors using Tiptap and easy-email-editor, giving users flexible options for creating professional email templates.
Vivas Leisure CRM
Front-end Engineer
A CRM platform designed for gyms and fitness clubs to manage members, automate outreach, and send targeted email campaigns. As a Front-end Engineer, I built a visual workflow automation module using Reactflow in collaboration with a team of 5 developers, eliminating redundant manual processes and saving up to 30% of admin time in client outreach and opportunity tracking. I also implemented two types of email editors using Tiptap and easy-email-editor, giving users flexible options for creating professional email templates.
Connector
Front-end Engineer
An internal operations tool that centralizes HR processes including employee recognition, absence tracking, and overtime management. As a Front-end Engineer, I gathered requirements from the operations team and planned features for the dev team. Key contributions include a Slack-integrated kudos module that boosted employee satisfaction for over 70% of staff, an absence management module with three display types and XLSX export that saved 40% of monthly payroll processing time for nearly 100 employees, and a FullCalendar-based interface for reviewing absence records by week, month, or year.
Connector
Front-end Engineer
An internal operations tool that centralizes HR processes including employee recognition, absence tracking, and overtime management. As a Front-end Engineer, I gathered requirements from the operations team and planned features for the dev team. Key contributions include a Slack-integrated kudos module that boosted employee satisfaction for over 70% of staff, an absence management module with three display types and XLSX export that saved 40% of monthly payroll processing time for nearly 100 employees, and a FullCalendar-based interface for reviewing absence records by week, month, or year.
Insurance Platform
Front-end Engineer
A digital platform that enables users to browse, compare, and apply for insurance products through dynamic form-driven workflows. As a Front-end Engineer, I implemented product listing and application form features, built complex multi-step forms using Formkit to handle diverse insurance data inputs, and wrote unit tests with Vitest to ensure reliability. I also collaborated closely with the back-end team to integrate APIs for product data and application submissions.
Insurance Platform
Front-end Engineer
A digital platform that enables users to browse, compare, and apply for insurance products through dynamic form-driven workflows. As a Front-end Engineer, I implemented product listing and application form features, built complex multi-step forms using Formkit to handle diverse insurance data inputs, and wrote unit tests with Vitest to ensure reliability. I also collaborated closely with the back-end team to integrate APIs for product data and application submissions.
Golden Gate
Front-end Engineer
An admin and member portal for managing restaurant chain operations including promotions, memberships, and reporting. As a Front-end Engineer, I assisted in identifying and fixing around 20 bugs across two client releases and collaborated with the client's development team to resolve issues related to template file uploads and build configurations across three release cycles.
Golden Gate
Front-end Engineer
An admin and member portal for managing restaurant chain operations including promotions, memberships, and reporting. As a Front-end Engineer, I assisted in identifying and fixing around 20 bugs across two client releases and collaborated with the client's development team to resolve issues related to template file uploads and build configurations across three release cycles.
DVMS Co., Ltd
Bshield Security Landing Page
Intern Front-end Engineer
A responsive marketing landing page for a security software product. I converted Figma visual designs into a polished, pixel-accurate implementation using a mobile-first layout approach, ensuring consistent cross-browser styling throughout.
Bshield Security Landing Page
Intern Front-end Engineer
A responsive marketing landing page for a security software product. I converted Figma visual designs into a polished, pixel-accurate implementation using a mobile-first layout approach, ensuring consistent cross-browser styling throughout.
Nanglucso Digital Assessment Website
Intern Front-end Engineer
A university digital assessment system enabling administrators to manage question banks and conduct online tests for students. I implemented two admin portal modules covering question source management and various question types, and iteratively updated features based on stakeholder requirements and feedback.
Nanglucso Digital Assessment Website
Intern Front-end Engineer
A university digital assessment system enabling administrators to manage question banks and conduct online tests for students. I implemented two admin portal modules covering question source management and various question types, and iteratively updated features based on stakeholder requirements and feedback.
Contact
I'm actively open to new opportunities — whether on-site or hybrid in Ho Chi Minh City, or fully remote. If you have a role, project, or collaboration in mind, please get in touch through any of the channels below.