Senior .Net Software Engineer (English)

About Trustify Technology
Trustify Technology is a fast-growing software engineering and digital transformation company providing AI-driven software development, verification & validation, and automation solutions for global clients across the US, UK/EU, Japan, and Singapore.
Trustify aims to be the top-tier technology outsourcing partner from Vietnam, combining human expertise with AI power to deliver high-quality, cost-effective solutions.
About Senior Software Engineer Position
We're looking for a Senior .NET Engineer to join a large-scale travel platform serving complex booking and supplier integration workflows. This role offers the opportunity to work on real-world enterprise systems, solve production-critical challenges, and contribute to improving the reliability and scalability of a high-traffic platform.
Your Benefits upon this position
· Flexible working hours + 1 WFH day per week
· Healthcare: Annual health check-up, Premium Health Insurance.
· 12 annual leaves + holidays.
· 13th-month salary.
· Annual project bonus
· Year End Party (YEP), company trip, team building activities.
· Marriage gift, sick leave support, funeral/maternity support.
· Lunar New Year gifts.
· Working devices provided.
Responsibilities
· Investigate and resolve production/system issues
· Develop and maintain features in a large enterprise travel platform
· Debug cross-service and asynchronous workflows
· Work with distributed/domain-based architecture
· Collaborate with product, operations, and support teams
· Improve system reliability, performance, and maintainability
· Support integrations with suppliers and third-party systems
Requirements
· Strong experience with C#, .NET Framework 4.8, ASP.NET MVC/Web API
· Solid knowledge of SQL Server, query optimization, and REST API integration
· Experience with RabbitMQ or message-driven/distributed systems
· Familiar with IIS, Windows Server, and enterprise/legacy applications
· Strong debugging, troubleshooting, and production support skills
· Understanding of distributed/SOA architectures
· Effective English communication skills (written and spoken) for working with UK-based stakeholders
Preferred Experience
· Experience with travel, OTA, or booking platforms
· Experience with supplier/third-party integrations and distributed systems
· Familiar with AWS/cloud infrastructure, Solr, and logging/audit/tracing systems
Contact Us
· Trustify Technology JSC.
· Contact HR Dept. via email: [protected info]
· Head Office: 307/20-21 Nguyen Van Troi, Tan Son Hoa Ward, HCMC
· Website: [protected info]