Senior Fullstack Engineer (.NET & Salesforce)

What You'll Do

• Develop and maintain scalable, high-performance web applications using .NET technologies (C#, .NET Core/.NET Framework) across backend services and fullstack systems.
• Design and build robust APIs, microservices, and enterprise integrations to support business and product requirements.
• Collaborate closely with cross-functional teams, stakeholders, and global clients to deliver technical solutions with high quality and scalability.
• Participate in architecture discussions, technical design, code reviews, and continuous improvement initiatives.
• Contribute to frontend development and system enhancements using modern web technologies and frameworks.
• Support and enhance eCommerce-related features and integrations, including working with Salesforce Commerce Cloud (SFCC) platforms when needed.
• Integrate systems with external services such as payment gateways, ERP, CRM, OMS, and third-party platforms via REST/SOAP APIs.
• Optimize application performance, security, maintainability, and user experience.
• Apply software engineering best practices including clean code, testing, CI/CD, and Agile/Scrum methodologies.
• Investigate technical issues, propose practical solutions, and actively contribute throughout the development lifecycle.
• Continuously learn new technologies and contribute ideas to improve engineering standards and product quality.

Who We Are Looking For

• 5+ years of experience in software development with strong hands-on experience in fullstack/backend development using .NET technologies.
• Strong proficiency in C#, .NET Core/.NET Framework, ASP.NET, Web APIs, and backend architecture design.
• Experience building scalable enterprise applications, APIs, and system integrations.
• Good understanding of Object-Oriented Programming (OOP), design patterns, SOLID principles, and clean architecture.
• Experience working with Microservices, RESTful APIs, and distributed systems.
• Familiarity with frontend technologies such as JavaScript, HTML5, CSS3, and modern frontend frameworks (React, Angular, Vue, etc.).
• Experience working with relational databases such as SQL Server/MySQL and understanding of database optimization concepts.
• Familiarity with cloud environments, CI/CD pipelines, Git, and modern development workflows.
• Experience with eCommerce platforms or Salesforce Commerce Cloud (SFCC/Demandware).
• Strong problem-solving and analytical skills with the ability to work independently and handle complex technical challenges.
• Good English communication skills for meetings and cross-team collaboration.
• Proactive, collaborative, and eager to continuously learn and grow in a dynamic engineering environment.

What We Offer

• Attractive and competitive performance-based compensation package.
• Full gross salary during probation.
• Generous 13-month salary and dedication bonus.
• Comprehensive healthcare insurance package and annual health check-ups.
• Flexible check-in time before 10:00 AM on weekdays.
• 12 annual leave days, 5 sick leave days, 11 public holidays as required by Vietnamese Labor Law, plus one extra day off for Christmas.
• Opportunity to work on global projects, collaborate with international teams.
• Daily breakfast, Happy hours gatherings to connect with colleagues.
• Active sport clubs such as badminton, running, football, music clubs.
• Teambuilding activities, annual company trips, and year end party.
• Continuous learning opportunities through technical & soft skills training, English classes, and internal communities.
• Financial assistance for important life events, including marriage, childbirth, and bereavement, ensuring support at every stage of life.