HR & Payroll Integration Platform – Australia
Software Architecture, Feb 2026 – current
Project description
- This is a cloud-based HR and payroll platform that supports employee management, leave administration, payroll processing, and integrations with third-party HRIS and payroll systems. The platform incorporates AI capabilities to assist with intelligent data processing, workflow automation, and HR-related information analysis, while leveraging secure cloud services to synchronize data across multiple business entities. Worked closely with Product Owners and distributed teams to design and deliver scalable features, enhance security, and automate complex business workflows.
Responsibilities
- Define and evolve the overall solution architecture across HR, payroll, integration, and AI-enabled business capabilities
- Translate business and technical requirements into scalable, secure, and maintainable solution designs and architectural decisions
- Design integration architecture between the core HR/payroll platform and third-party HRIS and payroll systems using RESTful APIs, gRPC, and event-driven messaging
- Define data synchronization and workflow architectures for employee information, leave management, and payroll processing across multiple business entities
- Design and integrate AI-enabled capabilities to support intelligent HR data processing, information analysis, and workflow automation
- Evaluate AI service integration approaches and define suitable architecture patterns for incorporating LLM-powered capabilities into existing business workflows
- Establish application architecture patterns, service boundaries, and integration standards to improve system scalability, maintainability, and extensibility
- Design security architecture and application-wide protection mechanisms, including secure API communication, CSRF protection, authentication, authorization, and sensitive HR/payroll data handling
- Assess technical risks, identify architectural bottlenecks, and recommend solutions to improve system performance, reliability, and operational resilience
- Define cloud and deployment architecture on AWS, considering scalability, availability, security, monitoring, and operational requirements
- Collaborate with Product Owners, developers, and distributed engineering teams to validate technical solutions and align implementation with architectural standards
- Provide technical guidance and architectural direction to development teams throughout solution design and implementation
- Establish testing and quality strategies covering unit testing, integration testing, and end-to-end automation to ensure solution reliability
Technologies
- Architecture & Design: Solution Architecture, Distributed Systems, Microservices, Design Patterns, Event-Driven Architecture, API Architecture
- .NET 7/8, .NET Framework, RESTful APIs, gRPC
- LLM, AI Service Integration, Prompt Engineering, AI-powered Workflow Automation
- API Security, Authentication & Authorization, CSRF Protection, Secure Data Handling
Education - Canada
Software Architecture, Technical Lead, 2023 - Present
Project description
Work in a transformative education project, focusing on integrating innovative solutions to enhance learning experiences. We create various applications tailored for different purposes and users. Key achievements include promoting inclusive education, supporting teacher development, fostering student engagement with cutting-edge technologies, and managing staff effectively.
Responsibilities
- I joined this project as a software architect and technical lead. I am responsible for designing the Database and Architecture for the new requirements from my customer and implementing core features both of Backend and Front end.
- Follow the development Team and make sure their implementation meets the design.
- Code review and building the process to improve code quality
- Define and build CI/CD processes using Azure DevOps.
Technologies
- C#, .NET 7, Web API, and RESTful for back-end
- Single sign on use Azure B2B and Azure B2C
- Single applications using Angular, and Material design for front-end
- MS SQL Server, Redis Cache
- Azure Cloud: CI/CD, App Service, Azure SQL, Logic App, Azure function, Queue, Storage, API Management
FinTech – Canada
Software Architecture, Backend Team Lead, 2020 – 2023
Project description
- I worked on a project that delivered a Financial Services Network, where we designed applications using a microservices architecture. All services were deployed and managed on Azure Cloud.
- The team size is around 70 members
- We were responsible for developing the core product, including the web application and supporting services for both web and mobile platforms.
- Developed tools to back up and restore SQL databases, Cosmos DB, and Gremlin DB.
Responsibilities
- I joined this project as a Software Architect and Backend Team Leader. I am responsible for designing the database and architecture for the new requirements from my customers and implementing core features.
- Follow the development team and make sure their implementation meets the design.
- Improve performance for existing databases and services.
- Code review and build the process to improve code quality
- Join daily meetings to work with BAs and designers in Canada to analyze requirements.
Technologies
- C#, .NET framework, Web API, and RESTful for back-end.
- Single applications using HTML5, CSS3, jQuery, LINQ JS, Angular, and Bootstrap UI for front-end.
- MS SQL Server, Azure Cosmos DB
- Azure Cloud: CI/CD, App Service, Azure SQL, Logic App, Azure function, Server bus, Queue, Storage, API Management
- Data Transformation (ETL): Azure Data Factory.
HEALTH CARE SYSTEM – Australia
Senior Developer - Project Team Lead, 2019–2020
Project description
- This is a survey system for healthcare services in Australia. We designed the application using a microservices architecture, with all services managed and deployed on Amazon Web Services (AWS).
- The team size is around 20 members
- The project focuses on data security; we proposed a method for masking and encrypting sensitive patient data.
Responsibilities
- Work with the project owner in Australia to get the requirements and integrate the features to deliver for clients
- Design schemas for databases and build data encryption for SQL Server
- Review code and work closely with the developer team to improve and control code quality
Technologies
- .NET Core 3.1, Android Java, IOS Objective-C
- Amazon Cloud: EC2, S3, RDS, SNS queue
AUTO SERVER SYSTEM – Japan
Project Team Leader, 2017–2019
Project description
- Auto Server System is a big project from Japan. The main business is supporting Car/ and motorcycle bidding at more than 250 auctions in Japan, and it also supports connecting more than 8000 car stores in Japan to buy and sell cars.
- Mainly focus on building a solution to get raw data from Auctions Storage and import to SQL server
- The project deployed to on-premises servers: Web App, Mobile App, Background Services
Responsibilities
- I have been part of the project for nearly three years, working as the project team leader at the Vietnam office.
- I am responsible for system design and resolving technical issues based on requests from the Japanese team
- Design database to track the status of background services.
- Improve performance for existing databases.
Technologies
- Window Service, Console App, ASP.NET MVC / Web Api, Xamarin, Web Socket, Html, CSS, JavaScript/jQuery.
- On-premises servers: Public Zone (End user) and Private Zone (backend services).
- We use multiple data centers in Japan to store car images. In every single data center, we have about 20–25 servers.
GPS TRACKING SYSTEM – Malaysia
Technical Lead, 2016–2017
Project description
- This project originates from Malaysia and includes a GPS server and tracking website used to monitor cars and motorcycles equipped with tracking devices (GPS devices and fuel sensors) when they are on the road.
- Build web and mobile tracking apps.
Responsibilities
- I joined this project for nearly 2 years in a Technical Lead role, supporting technical design and system architecture development.
- Build core features to integrate with GPS devices
- Work with clients to clarify the requirements
- Work with the development team to deliver projects to clients.
Technologies
LEGAL TECH/ DATA PROTECTION FOR LAW FIRMS – Turkey
Developer, 2015-2016
Project description
- Worked on a web and mobile project for a Turkish law firm focused on protecting client data and copyright using a government-approved electronic signature device. Implemented product requirements based on input from the product owner.
Responsibilities
- I worked on this project as a developer and implemented requests from the product owner.
Technologies
TELEVISION ADVERTISEMENT MANAGEMENT SYSTEM – Vietnam
Developer, 2014–2015
Project description
- The primary source of income for television stations in Vietnam today mostly comes from advertising. Therefore, many stations require a comprehensive system to manage advertisements effectively. Clients using this system include SCTV, YEAH1TV, and HTV.
Responsibilities
- I worked on this project as a developer and implemented requests from the line manager.
Technologies
OIL AND GAS – US
Developer, 2013–2014
Project description
- Contributed to the development of a web-based application designed to assist with well completion design in the oil and gas industry. The tool enables users to select and configure various equipment components to generate detailed completion string schematics. It features a user-friendly graphical interface and supports report generation with multiple paper size options.
Responsibilities
- Implement the requests from the product owner and execute code reviews for team members.
Technologies
