Principal Fullstack Software Engineer - Based in Ha Noi & Da Nang

We are open to candidates at both Senior and Principal levels for this position, based in our Hanoi and Da Nang offices. We are particularly looking for someone with strong exposure to emerging technologies and hands-on experience in commercial bidding and proposal activities with clients.

Responsibilities

• Lead the development of high performance, distributed systems capable of handling rapid growth and evolving business needs.

• Ensure system stability, fault tolerance, and high availability through robust design, monitoring, and proactive maintenance.

• Work closely with team members to deliver high-quality code and uphold strong engineering standards and shape technical vision and ensure client satisfaction.

• Practice agile development and demonstrate strong teamwork.

• Contribute to a dynamic, collaborative, transparent, and ego-free culture that values talent and behavior over titles.

• Continuously learn and apply innovative ideas to benefit the project.

Requirements

• At least 7 years working as a Principal Software Engineer with extensive experience designing, architecting, and delivering large-scale enterprise systems.

• Strong expertise across backend such as .NET, Java, Python, or others; and frontend (modern JavaScript frameworks).

• Deep understanding of microservices architecture, distributed systems, and API-led design (Kong Gateway or relevant).

• Solid knowledge of OOP, design principles (SOLID, KISS, DRY, Dependency Inversion, SoC) and best coding practices.

• Experience with Entity Framework and performance tuning.

• Experience with Azure or a similar cloud-based platform.

• Proven capability in unit testing, integration testing, and building maintainable testable architectures.

• Hands-on experience with CI/CD pipelines such as Git, Terraform, Octopus Deploy.

• Experience working within Scrum/Agile environments.

• Familiarity with real-time or event-driven architecture (e.g., Kafka, Azure SignalR).

• Experience with Azure Service Bus, RabbitMQ, or other messaging systems.

• Effective verbal English communication for technical discussions, architecture reviews, and stakeholder meetings.

• Resilient, proactive, self-driven, and committed to continuous learning and innovation.

• Strong ownership mindset with the ability to influence without authority and navigate ambiguity.

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.

• 2-day remote work per week.

• 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 Thursday 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.