Senior .NET Software Engineer

RESPONSIBILITIES:

• Design, develop, and maintain scalable web applications using .NET 8+, C#, and Blazor WebAssembly.

• Architect and implement new features for the VMS (Visitor/Vehicle Management System) with a focus on performance, usability, and maintainability.

• Optimize client-side and server-side application performance to ensure responsiveness under high traffic conditions.

• Design and execute performance, load, stress, and scalability testing to validate system behavior under peak workloads.

• Analyze performance bottlenecks, identify root causes, and implement optimization solutions across applications, databases, and infrastructure layers.

• Collaborate with Product Owners, QA Engineers, and DevOps teams to deliver highquality software solutions.

• Participate in code reviews, technical design discussions, and mentoring junior engineers.

• Contribute to CI/CD pipelines, monitoring, and production support activities.

REQUIREMENTS:

1. Must have

• 5+ years with C# / .NET (VB.NET) development experience.

• Hands-on experience with Blazor WebAssembly and ASP.NET Core.

• Strong understanding of web application architecture, RESTful APIs, and modern frontend/backend development practices.

• Experience with performance tuning, profiling tools, and load testing frameworks (e.g., JMeter, k6, LoadRunner, or similar).

• Experience databases programming (SQL Server, MySQL, PostgreSQL).

• Experience with entity framework

• Experience with RESTful APIs.

• Knowledge of SignalR and real-time communication.

• Understanding of authentication and authorization (gRPC, JWT, OAuth, OpenID Connect).

• Multithreading, asynchronous programming.

• Understanding of responsive design principles.

• Understanding solid object-oriented design skills.

• Experience in developing large-scale server applications.

• English fluent, with strong verbal and written communication skills.

2. Prefer

• Experience with cloud platforms (Azure).

• Knowledge of Docker and CI/CD pipelines.

• Experience with SignalR, WebSocket, or real-time applications.

• Familiarity with Agile/Scrum methodologies.

BENEFITS:

1. Career Path Development

• Working with technology experts, being exposed to new technologies, especially technologies related to the game industry, a new hot trend.

• Having chance to work with hot business trend: IoT, Factory Automation;

• Chance to work in international environment;

• Clearly defined long-term multi-career roadmap;

• Unlimited development & training opportunities (Language Training, Technical Training, Soft-skill Training, On-job Training, etc.)

• Oversea business trips (Japan, China, Singapore, US, Mexico, EU, etc.)

2. Work-life Balance

• Flexible working time that supports work-life balance (Core time: 9:00-16:00; 5 days from Monday - Friday/ week)

• Flexible lunch time;

• Additional special holiday

3. Wellness

• Well-protected with 24/7 personal accident and medical care insurance;

• Well-designed Annual Health Check-up program;

4. Activities

• Team-building activities; Birthday Party; Year-end party; Sport Day/ Family Day

• Summer Vacation (Trip to famous tourist spots domestic/ overseas,…)

5. Cash Benefits

• Attractive and competitive salary & bonus package depend on abilities, performance and competencies

• Diversified allowance scheme

6. Physical Environment

• Grade A Office with creative workplace and open space.

• Well-equipped facilities/ devices and professional working platforms