Principle Software Engineer

Location: Dong Nai, Vietnam

Primary Duties & Responsibilities

• Design, develop, test, and maintain enterprise-grade applications using C#, .NET, and modern software engineering practices.

• Develop scalable, highly available, and performant services and applications.

• Produce clean, maintainable, well-tested, and production-ready code.

• Conduct and participate in code reviews and provide constructive technical feedback.

• Troubleshoot complex production and performance issues.

• Collaboration & Mentoring

• Work closely with Product engineers, test engineers, QA, and other engineering teams.

• Translate business requirements into robust technical solutions.

• Mentor Senior Software Engineers and help develop the technical capabilities of the engineering team.

• Promote knowledge sharing through technical presentations, documentation, workshops, and communities of practice.

• Act as a technical escalation point for complex engineering challenges.

Education & Experience

• Bachelor or master’s degree in Computer Science, Software Engineering, Information Technology, or a related field, or equivalent practical experience

• 8+ years of professional software development experiences

• Strong expertise in object-oriented programming, for example C#, .NET / .NET Core, C++, python, Java…

• Strong knowledge of software architecture, design patterns, SOLID principles, and clean code practices.

• Extensive experience designing and developing enterprise-scale applications.

• Understanding of relational and/or SQL databases and data-access technologies will be preferred.

• Strong troubleshooting, debugging, and performance-optimization skills.

• Excellent communication, collaboration, and technical leadership skills.

• Familiar with AI tools will be preferred.

Safety Requirements

 

All employees are required to follow the site EHS procedures and Coherent Corp. Corporate EHS standards.

Quality and Environmental Responsibilities

 

Depending on location, this position may be responsible for the execution and maintenance of the ISO 9000, 9001, 14001 and/or other applicable standards that may apply to the relevant roles and responsibilities within the Quality Management System and Environmental Management System.

Culture Commitment

Ensure adherence to company’s values (ICARE) in all aspects of your position at Coherent Corp.:

Integrity – Create an Environment of Trust

Collaboration – Innovate Through the Sharing of Ideas

Accountability – Own the Process and the Outcome

Respect – Recognize the Value in Everyone

Enthusiasm – Find a Sense of Purpose in Work

Coherent Corp. is an equal opportunity/affirmative action employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.

About Us

Coherent is a global leader in lasers, engineered materials and networking components. We are a vertically integrated manufacturing company that develops innovative products for diversified applications in the industrial, optical communications, military, life sciences, semiconductor equipment, and consumer markets. Coherent provides a comprehensive career development platform within an environment that challenges employees to perform at their best, while rewarding excellence and hard-work through a competitive compensation program. It's an exciting opportunity to work for a company that offers stability, longevity and growth. Come Join Us!

Note to recruiters and employment agencies: We will not pay for unsolicited resumes from recruiters and employment agencies unless we have a signed agreement and have required assistance, in writing, for a specific opening.


We are looking for an experienced Principal Software Engineer to provide technical leadership in designing, developing, and evolving high-quality software solutions using the Microsoft .NET ecosystem. The successful candidate will be a hands-on technical leader who can solve complex engineering problems, establish development standards, mentor senior engineers, and work closely with architects, product engineers, and engineering teams to deliver scalable, secure, reliable, and maintainable software.