Technical Lead
2017 - PRESENTMCB A/S- Worked as a technical supervisor for an offshore development team to ensure the quality of the code by doing peer reviews and applied unit tests/automation tests heavily.
- Contributed as a system architect or technical advisor to research and propose the best technical solutions that meet customer-specific requirements and feature enhancement while still being able to ensure the system integrity and conformity.
- Led the team of five senior developers to maintain and develop the eCommerce platform - the core product - that has several versions developed in ASP Classic, ASP.NET WebForm, ASP.NET MVC, and React.
- Used React as a drop-in solution into the existing ASP.NET MVC application to enhance user experiences, flexibility, as well as application performance and throughput.
- Maintained and optimized the whole system using DI (dependency injection); varnish and Redis cache; and appropriate patterns, practices, and algorithms in deep codes.
- Optimized front-end applications on both desktop and mobile devices using dynamic bundling and chunking system plus device-splitting solutions in order to minimize page loads as neatly as possible.
- Ran and supervised several big projects like a new template-based front-end version, new CMS version, and APIs as microservices simultaneously.
- Successfully built a new version for online shops that is faster, lighter, more flexible, and more stable with a much better user experience.
- Built a high-performance offshore development team.
- Collaborated with the CTO and other technical leads to build up the standard of technologies, principles, patterns, coding conventions, and quality.
- Participated in building up an effective and productive CI/CD infrastructure using TeamCity, Octopus, PowerShell, and self-developed APIs.
- Worked together with the product owner and management boards to create development strategies and plans.
- Applied and ran the development process smoothly using Agile/Scrum/Kanban on a daily basis.
- Continuously evaluated, refactored, and optimized the system for better stability and performance.
- Supported and trained other departments/colleagues about how to use the system correctly.
- Improved and ran the recruitment process to be more effective in matching great candidates.
- Mentored and coached colleagues (mostly developers) to be more professional, proactive, and productive.
Technologies: GitHub, RESTful Web Services, Web Services, Sass, Bootstrap 4, Windows PowerShell, VBScript, CSS, jQuery UI, Swagger, Visual Studio Code, Scrum, Git, Redux, HTML5, Selenium, MVC Razor, Bootstrap 3, REST APIs, XML, SQL Server Management Studio, Microsoft SQL Server, ASP.NET Web API, ASP.NET Web Forms, Agile, Visual Studio, SQL, .NET, C#, Windows, Docker Swarm, Docker, Microservices, TeamCity, Continuous Delivery (CD), Continuous Integration (CI), DI, LLBLGen, Entity Framework, Web API, .NET Core, ASP.NET MVC, Blazor, JavaScript, jQuery, Bootstrap, Node.js, Gulp.js, TypeScript, React, AngularOffshore Development Lead
2012 - 2019ChangeDriver- Led a team of three offshore developers to maintain and develop more advanced features for a product that allows large organizations to control and publish their blueprints.
- Maintained and enhanced ActiveX control for embedding Microsoft Office applications into a web-based organization-blueprint editor tool using COM+/DCOM/ActiveX and JavaScript.
- Set up CI (continuous integration) and CD (continuous delivery) system using ThoughtWorks GO and MS Build scripts to automate the build and deployment of the product.
- Developed a new version of web-based publication wiki application where organization employees could sign in to see information and instructions about the processes, activities, regulations, and compliances that they need to follow and perform.
- Developed SharePoint WebParts that help show organization blueprint publications inside SharePoint which is used as their ERP system.
- Built and developed a centralized claim-based authentication and authorization system for the product using AD FS (Active Directory Federation Services), C#, SAML1.1/2, WIF, and WCF.
- Implemented SSO (single sign-on) function which can be federated with clients' organization corporate network seamlessly using AD FS and WIF.
- Integrated and developed extended Identity Provider Service to allow federation with Google/Facebook/LinkedIn using C#, WIF, and OpenAuth1/2.
- Built and developed API using WCF, XML/JSON, WIF to allow integration with the clients' ERP system.
- Profiled and optimized performance in database queries; services loads using asynchronous + fire-and-forget calls; and web applications thoughput.
- Used WiX, XAML, and C# to build an installer of the whole product for customers who want to run their own private version of the product within their corporate network.
- Set up and developed an on-demand infrastructure with AWS CLI and C# that would automatically scale up or down to server multiple heavy operations simultaneously.
- Created an automated backup/restore system to improve product availability and fault-tolerance.
- Built and developed a remote logging system to synchronize logs from private installations of the product with a cloud-based logging system for easier support and diagnostics.
- Applied Agile/Scrum using JIRA and MS Excel.
Technologies: RESTful Web Services, Visual Basic for Applications (VBA), MySQL, AWS EC2, AWS EC2 API, VBScript, OpenXML, jQuery UI, Android, Git, HTML5, C, Continuous Delivery (CD), ADFS, MVC Razor, VB, Bootstrap 3, Visual Basic .NET (VB.NET), Telerik, REST APIs, C++, SQL Server Management Studio, Microsoft Office, Microsoft SQL Server, ASP.NET Web API, ASP.NET MVC, ASP.NET Web Forms, Agile, XML, Visual Studio, SQL, .NET, C#, Windows, Windows PowerShell, Batch, SAML, Active Directory Federation, StringTemplate, WiX, Selenium, Microsoft Excel Interop, DCOM, ActiveX, CSS, HTML, JSON, SharePoint, WIF, Windows Communication Framework (WCF), Web Services, JavaScript, jQuery, Ajax, ASP.NETProject Lead
2010 - 2012DTT Globeteam Incorporation- Led the team of around eight developers to build a product that helps large organizations to document, maintain, and publish their blueprints.
- Coordinated with clients for ideas and feedback to improve the product.
- Re-architectured and designed product based using Visio, UML, and Rational Rose.
- Developed an ActiveX control for embedding Microsoft Visio, Word, and Excel into a browser to allow users to work with the product seamlessly using C++, JavaScript, and COM+/DCOM/ActiveX.
- Ensured that ActiveX control is aligned and could run smoothly in various security scenarios within corporate networks.
- Developed web-based editor tools using ASP.NET WebForms, AJAX, jQuery, JavaScript, HTML/CSS, Web services, and XML/JSON for users to edit the content of their organization's blueprints such as diagrams, documents, instructions, and publications.
- Developed a publishing system including a web-based application and publishing services to allow organizations to create an official publication of their blueprints.
- Created ClickOnce installation for WinForm application using Visual Studio.
- Used JIRA/MS Excel to apply Agile/Scrum into the development process.
Technologies: Visual Basic for Applications (VBA), MySQL, jQuery UI, C, Continuous Delivery (CD), ADFS, Selenium, MVC Razor, VB, Bootstrap 3, Visual Basic .NET (VB.NET), REST APIs, JavaScript, SQL Server Management Studio, Microsoft Office, Microsoft SQL Server, ASP.NET Web Forms, Agile, XML, Visual Studio, SQL, .NET, C#, Windows, Telerik, CSS, HTML, Microsoft Excel Interop, DCOM, ActiveX, C++, ClickOnce, WIF, RESTful Web Services, Web Services, jQuery, JSON, Windows Communication Framework (WCF), Ajax, ASP.NET, VB.NETDevelopment Lead
2007 - 2009DTT Globeteam Incorporation- Worked closely with the project manager, QA lead, and customers to evaluate requirements; provide technical solutions; define SRS (software requirement specifications); and define scopes, milestones, and high-level iteration plans using MS Project and Microsoft Word/Excel.
- Coordinated with all team leads to work out detailed implementation plans for each and every iteration using MS Project and Excel.
- Set up and built a CI (continuous integration) system using TFS (Team Foundation Server) and Cruise Control.
- Built and developed core business services with ESB (Enterprise Service Bus) using C#, WCF (Windows Communication Foundation), XML, and SOAP.
- Built and set up a unit testing system to integrate into CI in order to ensure quality. Trained and embraced developers to create unit tests which eventually reached 55% code-coverage.
- Supported front end team to built up web-based applications using ASP.NET Web-forms, JavaScript, WCF, SOAP, and AJAX.
- Participated in recruiting and training new developers for project needs.
- Joined scrum review sessions every week with the project manager and customer to update them with status, progress and issues.
- Set up a network load-balancing system to improve the availability and performance of web-based applications that could serve thousands of concurrent users.
Technologies: Continuous Delivery (CD), REST APIs, SQL Server Management Studio, Microsoft SQL Server, XML, Visual Studio, SQL, .NET, C#, Windows, Infragistics, Oracle Service Bus, Object-oriented Programming (OOP), SOA, JavaScript, Microsoft Project, CruiseControl, TFS, Ajax, ASP.NET, Windows Presentation Foundation (WPF), Windows Communication Framework (WCF), Web ServicesTeam Lead
2007 - 2007DTT Globeteam Incorporation- Developed a rich and smart desktop-base PIM (Product Information Management) client application using C#, WinForms, Infragistics library, WCF (Windows Communication Foundation).
- Participated in designing an SOA (Service-oriented Architecture) for the whole system.
- Used WCF to build an ESB (Enterprise Service Bus) to serve as a generic message-based communication channel for all services and applications.
- Designed and built a dynamic form-based application using C# and XML which can easily be extended and modified to meet UI and UX requirements without having to change the codes.
- Widely applied asynchronous communications between end applications and services to give users the best experiences.
- Led a small team of six developers to work mostly on end applications.
- Coordinated with the services and databases team to ensure development priorities and planned are aligned together efficiently.
- Worked together with the QA team and customers to evaluate requirements, to review and continuously improve the application.
Technologies: Continuous Delivery (CD), SQL Server Management Studio, Microsoft SQL Server, XML, Visual Studio, SQL, .NET, C#, Windows, Infragistics, Oracle Service Bus, Object-oriented Programming (OOP), SOA, JavaScript, Microsoft Project, CruiseControl, TFS, Ajax, ASP.NET, Windows Presentation Foundation (WPF), Windows Communication Framework (WCF), Web ServicesTeaching Assistant
2004 - 2006Faculty of Technologies, National University of Hanoi- Developed and created a digital library for the faculty using Greenstone open-source software.
- Assisted in giving lectures to students in various areas of computer and information systems.
- Trained and supported students to work on a lot of small projects using C#, C/C++, VB, VB.NET, SQL, and ASM.
- Set up and worked on different internship projects with several government departments using Microsoft Access + VBA, PHP, MySQL, and .NET-based WinForms.
Technologies: Assembly, Visual Basic .NET (VB.NET), Microsoft SQL Server, Visual Studio, SQL, C#, Windows, MySQL, PHP, Pascal, VB, C++, CIntern Developer
2003 - 2004Data Technology Co. Ltd.- Created production-level codes using both C++ and C# to build a unified communication system.
- Applied Agile methodologies to build a professional software development process that acted fast on changes and reduced time to live.
- Widely used and applied OOP/OOAD, design patterns/SOLID, and best practices.
- Built an interactive voice response system based on XML and VXML.
Technologies: C, XML, Visual Studio, SQL, .NET, C#, Windows, Remoting, VXML, C++