It's me, Lam Doan

Sendo Farm

E-commerce Platform

🗓️ 05/2025 – Present

Responsibilities:

• Delivered key e-commerce features, including D2D delivery, Station Pickup refactoring, and Membership Packages, improving the platform's ordering and customer experience.
• Maintained the Micro Frontend architecture, led frontend rebranding initiatives, and managed the development and release of the Zalo Mini App.
• Integrated Firebase Analytics for product tracking and owned deployment and release processes across web and Mini App platforms.

Stor.ai

Enterprise E-commerce Platform

🗓️ 04/2025 – 04/2026

Responsibilities:

• Developed and maintained business-critical workflows, including order-related processes, delivery integrations, and operational CMS features for a large-scale e-commerce platform
• Owned the implementation of a unified Google authentication flow (OIDC + People API) across web and Cordova-based Android/iOS applications.
• Implemented webhook-based integrations with third-party delivery providers to handle driver assignment and delivery events.
• Rebuilt and standardized transactional email workflows (order, payment, refund), ensuring consistent behavior across multiple clients.
• Maintained CMS modules, fixed production issues, and ensured system stability in a high-traffic environment.

Yuzu

Product sales management for a Jpop band

🗓️ 01/2025 – 03/2025

Responsibilities:

• Set up the system and documented technical specifications.
• Assisted in debugging and resolving issues left by the previous development team.

PTA

Government Education System, Japan

🗓️ 06/2024 – 01/2025

Responsibilities:

• Contributed to the development of a nationwide management system for parents, teachers, students, and school staff.
• Built and maintained CMS features for managing announcements, documents, and media content used across schools.
• Designed and implemented role-based access control and bulk account provisioning via CSV for parents and guardians.
• Developed family relationship management features to handle parent–child and guardian associations.
• Integrated notification workflows, including email subscriptions and daily Slack alerts for system activities.
• Contributed to system design and long-term operation, including maintenance and coverage testing.

EMLINX

🗓️ 04/2024 – 06/2025

Responsibilities:

• Contributed to the development and debugging of ReactJS application with Material UI.
• Built a Line Chat integration feature.
• Improved user experience.

AIdaBot

AI-powered Q&A & Document Intelligence Platform

🗓️ 12/2023 – 04/2024

Responsibilities:

• Contributed to the design and implementation of an AI-assisted document Q&A platform, focusing on system architecture and CMS.
• Developed and maintained CMS features for managing documents, configurations, and chatbot behavior.
• Designed system workflows to support document-based question answering using ChatGPT, LangChain, and AWS OpenSearch.
• Integrated the chatbot with Facebook Fanpage messaging to enable real-time user interactions and automated responses.
• Integrated the chatbot into external websites via embeddable scripts, including a proof of concept using a custom Liferay portlet.
• Implemented unit tests and contributed to system stability through iterative improvements and ongoing maintenance.

PMS

Smart Hotel & Facial Recognition Platform

🗓️ 12/2021 – 11/2023

Responsibilities:

• Developed and maintained a smart hotel management platform enabling contactless, unmanned operations for enterprise clients in Japan, covering reservations, check-in workflows, and on-site services.
• Played a key role in designing and implementing facial recognition–based check-in systems, including end-to-end UI and backend workflows for iPad devices and kiosk environments.
• Integrated OCR and facial recognition into the check-in flow, significantly reducing manual input and on-site staff workload.
• Implemented and optimized AWS Rekognition, improving facial recognition accuracy by approximately 90% compared to the previous solution.
• Optimized backend APIs for reservation and check-in flows, reducing response time by around 20% in critical user journeys.
• Contributed to complex third-party integrations, including OTA platforms, payment kiosks, room cleaning systems, and real-world deployments such as a facial recognition–based ticketing system for the Sado Gold Mine tourist site.

Nhat Quang Edu Game

AI-assisted Career Orientation Platform

🗓️ 06/2024 – 11/2024

Responsibilities:

• Developed an educational simulation platform for career orientation, using structured assessments and AI-assisted recommendations to guide users toward suitable career paths.
• Designed and built interactive user interfaces with React and TypeScript, focusing on usability, responsiveness, and performance.
• Implemented AI-assisted logic and backend data workflows to support questionnaire evaluation and career recommendations.
• Integrated third-party services such as ReadyPlayer.me for 3D avatar customization, enhancing user engagement and personalization.

HR Lotus

Human Resource Management System (Healthcare)

🗓️ 06/2025 – Present

Responsibilities:

• Developed a healthcare-focused HR management system supporting administrators, support workers, and clients.
• Designed and implemented core HR workflows, including staff management, task assignment, payroll calculation, and operational tracking.
• Built the Leave Request module, enabling employees and managers to submit, approve, and track leave requests through configurable approval workflows.
• Developed the Daily Care Plan feature, allowing caregivers to create personalized daily care schedules for patients.
• Implemented task management workflows within Daily Care Plans to help caregivers monitor patient health conditions, treatment progress, and daily activities.
• Designed and developed backend services and RESTful APIs using Node.js and TypeScript.
• Deployed and maintained the application in a Docker-based VPS environment.