Senior Engineer, Software Development

Working Location: Empire Tower (100% onsite, accessible via BTS Chong Nonsi)

We are looking for an Senior Engineer, Software Development to join our team in Thailand. The candidate will support backend development for both existing payment platforms and new payment solutions.

The ideal candidate should have good backend development skills, basic understanding or interest in the payment / fintech / financial domain, good English communication, and willingness to learn and use AI tools to improve software development efficiency.

• Development of reliable and critical services of the payment platform.
• Design and develop new features and enhancements on the payment sub-systems such as transaction processing, merchant services, refund, settlement, reconciliation, reporting, and partner integration.
• Analyse impacts and build APIs, backend services, batch jobs, and system integration components to be compatible on both legacy and new payment platforms
• Collaborate with cross function teams such as Product, DevOps, Business, and support teams to ensure the Business requirements are fulfilled.
• Understand business requirements and identify technical gaps, risks, dependencies, and edge cases before development starts. Then collaborate with team members to troubleshoot and resolve production incidents, and system improvement
• Guide junior and mid-level engineers on implementation approach, coding standards, and troubleshooting.
• Review code quality and ensure proper design, performance, security, and maintainability.
• Take responsibility for end-to-end module understanding, design, development, testing support, deployment support, and production issue follow-up.
• Ensure the module is stable, maintainable, and aligned with product and technical requirements.
• Propose practical and scalable technical solutions for assigned modules.
• Apply AI Coding tools (Claude, Codex, Kiro) to increase development efficiency and code quality. 

Required Qualifications

• Bachelor's degree in Computer Science, IT, Software Engineering, or related field.
• At least 3-5 years of software development experience, preferably in backend development and familiarity with basic SDLC including Agile development
• Solid programming ability in at least one backend technologies such as Java, C# .NET, Python, or similar, building REST APIs, system integration, and backend service development.
• Foundational knowledge with both TSQL databases (SQL Server, MySQL) and No-SQL databases and distributed systems
• Hand-on experience on some of the AI Coding development tools (Claude, Codex, Kiro) 
• Strong analytical and problem-solving skills to break down complex problems, understand requirements, identify root causes to deliver reliable backend solutions and willingness to apply new technologies (leveraging AI) to enhance productivity. 
• Good communication skills and teamwork. 
  

Payment Domain Knowledge

Experience or knowledge in the following areas is preferred but not mandatory:

•  Payment gateway
  Card payment acquiring or issuing
  Authorization, capture, void, refund, and reversal
  Merchant integration
  Settlement and reconciliation
  QR payment, wallet payment, bank transfer, or PromptPay
  Payment security, encryption, tokenization, or PCI DSS
  

We offer an attractive remuneration package, a fast-paced and exciting working environment, and provide challenging opportunities for life-long learning and career development.

Interested candidates are invited to send your comprehensive resume with current and expected salary package via this job ad. Please note that only shortlisted candidates will be notified.

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