Senior Fullstack .Net Developer

freeC's Client

• Software Development (Approx. 80%):
• Maintain and enhance existing features and functionalities within the client’s CRM system.
• Design, develop, test, and deploy software solutions using the .NET/C# stack and AWS services.
• Focus on delivering high-quality, efficient, and robust code to meet defined business requirements.
• Participate in code reviews and contribute to the team's technical standards and best practices.
• System Support & On-Call (Approx. 20%):
• Actively participate in the team's rotation for after-hours and weekend support coverage to reduce the burden on the client's US-based team. This includes evening shifts (e.g., M-F 2 PM - 9 PM Eastern time / with some overlap with VN core hours) and weekend coverage (with overtime pay, rate to be confirmed).
• Monitor the system and quickly troubleshoot and resolve urgent production issues and incidents.
• Demonstrate high responsiveness and proactivity in addressing urgent client requests and technical challenges.
• Occasionally join evening calls with the US client for coordination and issue resolution.
• Collaboration & Communication:
• Collaborate effectively with cross-functional and geographically dispersed teams.
• Build and leverage relationships with client-side contacts to facilitate effective technical resolution and project execution.
• Clearly communicate technical concepts and solutions, both written and verbally, in English.

Required Technical Skills

Candidates must be technically strong with exceptional problem-solving abilities across the full stack:

• Core .NET: Strong proficiency in .NET (Web) development and C# (5+ years)
• API Development: Expertise with ASP.NET Web API.
• Cloud & Infrastructure (AWS): Hands-on experience with AWS Lambdas and a solid understanding of cloud-native development.
• Databases: Proficiency in SQL, including experience with PostgreSQL and SQL Server.
• DevOps & Tools: Experience with modern practices and tools such as:
• Docker
• Terraform (for Infrastructure as Code)
• AWS CDK (Cloud Development Kit)
• GitHub Actions (for CI/CD)
• Messaging: Experience working with message brokers like Kafka.
• Software Design: Solid understanding and practical application of various Design Patterns.
• Fluent English in both verbal and non-verbal skills

Ideal Candidate Profile

• Mindset: Possesses a strong focus on meeting customer expectations and commitments, understanding that the work is largely maintenance-oriented, focused on improving necessary functionalities, rather than constantly seeking "thrills" in working with new topics.
• Problem-Solving: An exceptional problem solver who can approach issues creatively and effectively.
• Adaptability: Highly energetic and thrives in a dynamic, changing environment with evolving priorities.
• Communication: Reasonably good written and verbal English skills are a must for effective client interaction.
• Proactivity: Ability to anticipate issues and take initiative, demonstrating a high degree of urgency and responsiveness to customer needs.

Working condition

• Core Working Hours: 9:00 AM - 6:00 PM Vietnam Time (GMT+7).
• Support Coverage: Mandatory participation in a team rotation for after-hours and weekend support, including a few hours of overlap with US Eastern Time (e.g., M-F 2 PM - 9 PM Eastern).

• Fully-remote working (Vietnam time)
• Net salary (PIT will be covered by the company)