Senior Fullstack Developer

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.

Key Responsibilities

·      Maintain, troubleshoot, and upgrade existing web systems and applications.

·      Enhance and optimize backend services, REST APIs, and business logic using C#/.NET Core.

·      Work on ongoing website maintenance and upgrade activities for client platforms built with WordPress VIP and Craft CMS.

·      Investigate and resolve production issues through log analysis, request tracing, and browser/network debugging.

·      Collaborate with cross-functional teams to ensure system stability, performance, and maintainability.

·      Participate in code reviews and follow best practices in Git workflows.

·      Ensure responsive, stable, and cross-browser compatible UI behavior.

Required skills and qualifications

·      5+ years of experience with C# + .NET Core.

·      Strong SQL/MySQL skills (query writing + optimization).

·      Good understanding of REST API design patterns.

·      Proven ability to debug, troubleshoot, and maintain production systems independently.

·      Experience working on maintenance, enhancement, and upgrade projects for existing systems.

·      Hands-on experience or familiarity with WordPress, Craft CMS, or PHP-based platforms.

·      Familiarity with Twig templating engine is a plus.

·      Ability to quickly understand and work with existing client systems and architectures.

·      Hands-on experience with AWS or Azure.

·      Curiosity and strong learning mindset.

·      English communication skills are required.

Nice to have

·      Familiarity with JavaScript/TypeScript fundamentals.

·      Experience working with Camera/WiFi systems is a plus.

Your benefits from this position

• Flexible working hours
• Healthcare: Annual health check-up, Premium Health Insurance.
• 12 annual leaves + holidays.
• 13th-month salary.
• Bonus review bi-annually based on performance.  
• Bonus for excellent project performance.
• Year End Party (YEP), company trip, happy hours, team building activities.
• Job-related training courses & certification support (e.g., Agile/Scrum Master).
• Marriage gift, sick leave support, funeral/maternity support.
• Lunar New Year gifts.
• Working devices provided.