Backend Developer (C# / API / Database) - KGI Securities (Thailand) Public Company Limited

• Design, develop, and maintain backend services and APIs
• Develop and optimize database queries, stored procedures, and data processing logic
• Build scalable and reliable backend systems for internal and external applications
• Collaborate with frontend, mobile, QA, and infrastructure teams
• Troubleshoot system issues and optimize system performance
• Participate in technical design, architecture discussions, and code reviews
• Prepare technical documentation and deployment support when required

• Bachelor’s degree in Computer Science, Information Technology, Engineering, or related field
• 6–11 years of software development experience
• Strong programming experience in C#
• Experience in backend service/API development
• Experience in SQL programming and stored procedure development
• Familiar with relational databases such as Microsoft SQL Server, MariaDB
• Understanding of distributed systems and service-oriented architecture
• Good analytical, troubleshooting, and problem-solving skills
• Able to work independently and as part of a team
• Preferred Qualifications
• Experience with gRPC, microservices, or messaging systems
• Experience in financial systems, market data, or trading platforms

KGI Securities (Thailand) is one of the leading securities firms in Thailand and provides a full range of services such as equity broking (a member of the Stock Exchange of Thailand with broker seat no. 13), investment and financial advisory, securities underwriting, securities registrar, selling of mutual funds, securities borrowing and lending, and OTC derivative and Futures business.