Senior Fullstack .NET Software Engineer (.NET & JavaScript/ReactJS)

• Perform hands-on coding and code review as a senior/lead developer when needed.
• Understand customer/business requirements and develop applications that are consistent with this.
• Lead technical discussions with clients/internal teams to clarify requirements, propose solutions, and align on architecture/design decisions.
• Provide technical guidance on solution design, coding standards, performance, scalability, security, and maintainability.
• Design, develop, review, implement, maintain, and manage CI/CD, build management, deployment scripts, systems, and related code as required.
• Take technical ownership of key modules and support the team in solving complex technical issues.
• Participate in Agile/Scrum activities: daily standup, demo, retrospective, estimation, planning, etc.
• Mentor/train junior members if any.
• Perform other tasks assigned by the Line Manager.

General requirements:

• At least intermediate English communication, able to discuss technical topics and work directly with international clients.
• Bachelor’s degree in Computer Science, Information Technology, or a related field.
• Likely having 8+ years of software development experience.
• Experience as a senior/lead engineer, technical owner, or key technical contributor.
• Ability to analyze requirements, propose technical solutions, and explain technical trade-offs.
• Familiar with Agile methodologies such as Scrum, XP, or Kanban.
• Ability to work independently with minimum guidance and quickly adapt to new technologies.

Technical requirements:

• Proficiency in C#, ASP.NET, .NET Core, and .NET Framework.
• Experience with HTML/CSS/JavaScript and front-end frameworks, especially ReactJS/TypeScript.
• Experience with RESTful API design and integration.
• Experience with SQL Server and ORM frameworks such as Entity Framework.
• Strong experience with OOP, design patterns, IoC container, and clean code practices.
• Experience in application architecture/design, including scalability, maintainability, and performance considerations.
• Ability to review technical design, identify risks, and recommend improvements.
• Performs effectively and independently in design, coding, verification, unit testing, integration testing, and debugging.
• Has basic knowledge of software requirements and software testing.

Nice to have:

• Experience in setting up CI/CD pipelines and web security issues
• Experience using AI chat tools (ChatGPT, Claude, Gemini, etc.) for research, debugging, and learning
• Familiarity with at least one AI coding assistant (GitHub Copilot, Cursor, Claude Code, or similar)
• Ability to write clear, contextual prompts to generate code snippets, unit tests, or documentation
• Awareness of AI output limitations and responsible AI use (data privacy, handling of sensitive client data)

Perks You'll Enjoy 

• Working in one of the Best Places to Work in Vietnam
• Building large-scale & global software products
• Working & growing with Passionate & Talented Team
• Diverse careers opportunities with Software Outsourcing, Software Product Development, IT Solutions & Consulting
• Attractive Salary and Benefits
• Performance appraisals every year and performance bonus
• Onsite opportunities: short-term and long-term assignments in North American (U.S, Canada), Europe, Asia.
• Flexible working time
• Various training on hot-trend technologies, best practices and soft skills
• Premium healthcare insurance for you and your loved ones
• Company trip, big annual year-end party every year, team building, etc.
• Fitness & sport activities: football, tennis, table-tennis, badminton, yoga, swimming…
• Joining community development activities: 1% Pledge, charity every quarter, blood donation, public seminars, career orientation talks,…
• Free in-house entertainment facilities (foosball, ping pong, gym…), coffee, and snack (instant noodles, cookies, candies…)

And much more, join us and let yourself explore other fantastic things!