Principal Full-Stack Software Engineer (.NET, ReactJS)

KMS Technology is a strategic engineering company helping businesses turn bold ideas into high-impact solutions - faster. Founded in 2009 as a U.S.-based services company, we’ve grown into a global organization with locations in the US, Vietnam, and Mexico.

KMS is trusted globally for the quality of our engineering and consulting services. We bring deep expertise in product development and quality assurance, AI-native engineering, and delivery excellence to every engagement. Our mission is to help customers build what’s next—accelerating innovation, crafting brilliant solutions, and creating real-world impact. At KMS, we believe sustainable growth is built on the success of our clients and employees and in making a lasting contribution to our communities within 3 main business sectors:

• Enterprise software development services: Leverage software domain expertise to help clients make better business decisions in technology platforms, increase speed-to-market, and gain critical development support through innovative technology solutions
• Healthcare technology solutions: Build transformative next-gen technologies to solve healthcare’s most challenging problems, providing innovative tools and expertise to providers, payers, life sciences, and medical technology vendors
• Banking, Financial Services & Insurance (BFSI) technology solutions: Empower BFSI businesses to embrace the digital finance revolution and expedite clients’ journey towards complete digitalization, technology consulting, data analytics, software development, and software quality

Responsibilities

• Develop and maintain high-quality, scalable applications using .NET (C#) and JavaScript (ReactJS)
• Collaborate with Product Owner, Development Lead, and other developers to define and deliver product increments.
• Develop and maintain applications, ensuring code quality and scalability.
• Implement and optimize continuous integration and continuous delivery (CI/CD) processes using tools like Azure DevOps, Jira and JFrog Artifactory.
• Utilize tools like SonarQube and Github CodeQL for static code analysis to ensure software security and quality.
• Design, develop, review, implement, maintain and manage continuous integration, build management and deployment scripts, systems, and any code as required;
• Write unit tests and run through all the test cases for assigned tasks and ensure all cases are tested and passed before release for testing.
• Participate in Agile/Scrum activities: daily standup, demo session, retrospective, estimate, and planning, etc
• Provide mentoring/training for junior members if any
• Perform other tasks assigned by the Line Manager.

General requirements:

• Having 7+ years of experience depending on how fast of your learning and developing technical capability
• Ability to obtain a deep knowledge of the project technologies and work independently with minimum guidance
• Good problem-solving skills and presentation skills
• Familiar with the Agile development methodologies (Scrum)
• At least upper- intermediate skill level of English and the ability to present to client’s technical leaders and executive team as well as participating online conferences in English

Technical requirements:

• Proficiency in C#, ASP.NET, .NET Core and.NET framework.
• Strong understanding of object-oriented programming (OOP) principles.
• Experience with web development technologies (HTML/CSS/JavaScript) and front-end frameworks ReactJS, Angular, TypeScript)
• Experience with database design and SQL (e.g., SQL Server, Oracle, MySQL).
• Performs effectively & independently in software implementation activities (designing, coding, verification, unit testing, integration testing, and debugging…)
• Experience in source controls and unit test
• Experience with Entity Framework or Dapper, LINQ
• Experience with back-end web development such as RESTful APIs, Authentication/Authorization, CORS,…
• Experience of source controls such as Git
• Experience in microservices and cloud environment (Azure/AWS/GCP) 
• Experience with NoSQL is a plus

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 Services, 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!