Phuong Nguyen Duy - Senior Software Engineer
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About Me

Phuong Nguyen Duy

Results-driven Senior Software Engineer with 6+ years building scalable systems that serve 100K+ users. I've reduced deployment time by 40% through CI/CD implementation and improved system performance by 30% via architectural optimization.

My expertise spans the entire .NET ecosystem with proven leadership in mentoring teams and driving technical decisions across legal, e-commerce, banking, and education domains. I transform complex business requirements into scalable, high-performance solutions that drive business success.

Ready to Drive Results Together?

Let's explore how my proven track record of 40% performance improvements and 99.5% deployment success can accelerate your next project.

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Education

2012 to 2016

Software Engineering

VNUHCM - University of Science

2019

ASP.NET Core 3.0 Certificate

NashTech Limited

12-2020 to 1-2022

Diploma in English level 14

Wall Street English

Experience

May-2023 to Present

MANTU

SENIOR SOFTWARE ENGINEER
Customer: Mantu | Team Size: Up to 10 members
Project Description: Company-wide IT infrastructure platform providing common services: Location management, Survey systems, MessageHub, and enterprise integrations.
Key Achievements:
  • Accelerated feature delivery by 25% implementing Agile best practices and sprint optimization
  • Improved cross-team integration efficiency by 40% building reusable Vue3/TypeScript components
  • Reduced production bugs by 35% through comprehensive code reviews and database optimization
  • Achieved 99.5% deployment success rate implementing automated CI/CD pipelines with Azure DevOps
  • Mentored 3 junior developers improving team productivity and code quality standards
Technologies: Back-end: .NET 6, .NET Framework 4.8, SQL Server, Hosted services | Front-end: Vue3, Vite, CSS, TypeScript | Cloud: Azure (App Services, Monitoring, Pipeline) | Testing: Unit testing, Specflow
Jun-2022 to May-2023

POSITIVE THINKING COMPANY

SENIOR SOFTWARE ENGINEER
Customer: McKinsey & Company - Global | Team Size: Up to 10 members
Project Description: SaaS diagnostic tool for mining operations used by McKinsey consultants. Transformed Excel-based cost analysis model into scalable web platform serving global mining companies with real-time analytics.
Key Achievements:
  • Increased system scalability by 60% refactoring monolithic architecture to microservices pattern
  • Boosted API performance by 45% implementing GraphQL with optimized query strategies and caching
  • Improved code coverage from 40% to 85% implementing comprehensive unit/integration testing framework
  • Reduced Excel processing time by 50% optimizing NPOI operations and Azure Storage integration
  • Implemented real-time data sync using Hangfire for parallel processing of large datasets
  • Delivered 12 major features ahead of schedule exceeding client satisfaction targets
Technologies: Back-end: .NET 6, PostgreSQL, GraphQL, Hangfire, Hasura | Front-end: ReactJS | Cloud: Azure Storage, Dapper ORM
Jul-2021 to Jun-2022

SAIGON TECHNOLOGY

.NET DEVELOPER
Customer: Idealpos - Australia | Team Size: Up to 7 members
Project Description: Enterprise POS system managing users, invoices, orders, and subscriptions for Australian retail market. Multi-tenant SaaS platform with comprehensive reporting and third-party integrations.
Key Achievements:
  • Accelerated development velocity by 30% designing reusable framework components and templates
  • Reduced technical debt by 50% refactoring legacy codebase to modern .NET Core standards
  • Achieved 95% client satisfaction delivering comprehensive documentation, training materials, and API guides
  • Built responsive Angular SPA improving user experience across all devices
  • Implemented RESTful API architecture supporting seamless third-party integrations
Technologies: .NET framework, .NET core 3.1, RestfulAPI, Angular 5, SQL, EF6, EF Core.
Jan-2021 to Jul-2021

NASHTECH LIMITED

SENIOR SOFTWARE ENGINEER
Customer: Ebiquity - UK | Team Size: Up to 35 members
Project Description: Media analytics platform processing TV advertising data for UK market. Handles massive datasets from multiple broadcasters for cost optimization analysis and advertising effectiveness measurement.
Key Achievements:
  • Optimized large file processing by 70% implementing advanced caching strategies for multi-GB datasets
  • Architected hybrid database solution synchronizing SQL Server and MongoDB for optimal performance
  • Led code review process for 15+ developers establishing quality standards and best practices
  • Designed database schemas supporting complex media analytics across multiple data sources
  • Achieved 80%+ code coverage across critical modules through comprehensive testing strategy
Technologies: ASP .Net Core 3.1 Web API, SignalR, EF Core Code First, SqlServer, MongoDB, Angular, Material UI, XUnit, NUnit, Lib: Aspose, EPPlus

Aug-2019 to Jan-2021
Software Engineer
Project: Management System - Internal Tools
Key Achievements:
  • Implemented OWASP TOP 10 security compliance ensuring enterprise-grade security standards
  • Developed 20+ RESTful APIs supporting critical business operations
  • Modernized legacy systems while maintaining backward compatibility and zero downtime
  • Improved system reliability by 40% through proactive monitoring and error handling
Technologies: ASP .Net Core 3.1 Web API, Web Socket, EF Core Code First, SqlServer, Angular, Flutter, Material UI, XUnit, Nunit, EPPlus.
Aug-2018 to Jul-2019

DEVINITION SOFTWARE SOLUTIONS SUPPLIER

ASSOCIATE DEVELOPER
Customer:TOG Recruitment - Holland | Team Size: Up to 5 members
Project Description: Recruitment platform connecting IT professionals with employers across Holland and Vietnam markets. Features job matching, resume parsing, and applicant tracking systems.
Key Achievements:
  • Designed database architecture supporting 10K+ job postings and candidate profiles
  • Built responsive web application with modern UI/UX principles and mobile-first design
  • Analyzed business requirements translating needs into scalable technical solutions
  • Optimized application performance achieving sub-2-second page load times
Technologies: .NET Core 2.1, EF core code first, SQL server, Bootstrap, HTML, CSS, JavaScript.
Oct-2015 to Sep-2016

THAISON TECHNOLOGY DEVELOPMENT COMPANY LIMITED

FRESHER
Project Description: Government social insurance management system supporting Vietnamese businesses in compliance and transaction processing with Vietnam Social Security Administration.
Key Contributions:
  • Supported 100+ businesses in social insurance transaction processing
  • Developed record management features streamlining government compliance workflows
  • Built strong foundation in enterprise software development and system architecture

Skills

🧠 CORE COMPETENCIES

  • System Architecture: Microservices, SOA, Clean Architecture, Domain-Driven Design
  • Performance Optimization: Caching strategies, Database tuning, Load balancing
  • Technical Leadership: Team mentoring, Code review, Agile/Scrum facilitation
  • Problem Solving: Complex debugging, Root cause analysis, Solution design
  • DevOps: CI/CD pipelines, Automated deployment, Infrastructure as code

⚙️ BACKEND TECHNOLOGIES

  • .NET Ecosystem: .NET 6, .NET Core, .NET Framework (6+ years experience)
  • Web APIs: RESTful APIs, GraphQL, SignalR, Microservices
  • ORM & Data Access: Entity Framework Core, Dapper, LINQ
  • Architecture Patterns: Clean Architecture, CQRS, Repository Pattern

💻 PROGRAMMING EXPERTISE

  • C# .NET: Advanced (6+ years) - Enterprise applications, Web APIs
  • SQL: Expert - Complex queries, Performance optimization, Database design
  • JavaScript/TypeScript: Proficient - Modern ES6+, Vue3, Angular
  • HTML/CSS: Advanced - Responsive design, Modern CSS frameworks

🗄️ DATABASE EXPERTISE

  • SQL Server: Advanced - Performance tuning, Index optimization
  • PostgreSQL: Proficient - Complex queries, Data modeling
  • MongoDB: Intermediate - NoSQL design, Aggregation pipelines
  • Azure Cosmos DB: Basic - Cloud NoSQL solutions

☁️ CLOUD & DEVOPS

  • Microsoft Azure: App Services, Functions, Storage, Monitoring
  • CI/CD: Azure DevOps, GitHub Actions, Automated deployment
  • Containerization: Docker, Container orchestration
  • Version Control: Git (GitHub, Azure DevOps), TFS, SVN

🎯 OTHER SKILLS

  • Testing: Unit testing, Integration testing, XUnit, NUnit, Specflow
  • Security: OWASP compliance, Authentication, Authorization
  • Tools: AutoMapper, Hangfire, NPOI, Postman
  • Mentoring: Training & Development, Technical guidance

Contact

Phuong Nguyen Duy

Senior Software Engineer

phuongnd.tech@gmail.com

+84 979 891 673

13 Thanh Xuan Street, Thoi An Ward, District 12, Ho Chi Minh City