Senior .Net Software Engineer (English)

About Trustify TechnologyTrustify 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 PositionWe’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 systemsRequirements· 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 stakeholdersPreferred 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 systemsContact Us· Trustify Technology JSC.· Contact HR Dept. via email: thanh.vo@trustifytechnology.com· Head Office: 307/20-21 Nguyen Van Troi, Tan Son Hoa Ward, HCMC· Website: https://trustifytechnology.com/