Senior Software Engineer / Bangkok, Thailand

Paphawit
Ngamchaliew.

Senior Software Engineer developing a new flagship product at LSEG to deliver an enhanced user experience. Experienced in high-performance financial applications, application modernization, and cloud infrastructure.

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Experience

THE WORK SO FAR

Oct 2025 — Present

CURRENT ROLE

Senior Software Engineer

London Stock Exchange Group

  • Develop a new flagship product at LSEG, designed to deliver an enhanced user experience.
  • Lead development and maintenance of core products on LSEG’s high-performance financial data platform.
  • Collaborate with cross-functional teams to align technical strategy and delivery plans with business priorities.
  • Modernize application architecture to improve performance, scalability, and maintainability.
  • Optimize application performance through Largest Contentful Paint (LCP) improvements and dynamic loading.
  • Use AI-assisted workflows to automate repetitive development tasks and improve engineering efficiency.
  • Translate user feedback into features that improve everyday workflows.

Jan 2023 — Sep 2025

Software Engineer

London Stock Exchange Group

  • Maintained and enhanced core products for LSEG’s financial data platform, working closely with QA and business stakeholders.
  • Migrated the application from Angular 9 to Angular 20 to improve maintainability and performance.
  • Delivered performance improvements including a 10% reduction in CPU usage and a feature supporting 9× the previous data size.
  • Researched and implemented Web Workers, WebAssembly, and Node.js server-side calculations.
  • Automated deployment and code analysis in CI/CD pipelines; planned releases and mentored new team members.

July 2022 — Jan 2023

Software Engineer

42Bangkok

  • Developed and containerized applications with Docker, Kubernetes, and ArgoCD.
  • Migrated on-premises infrastructure to AWS EC2 and ECR for improved reliability and scalability.
  • Designed a microservices architecture for the 42Bangkok Registration Platform.
  • Introduced modern web technologies including Next.js, and promoted maintainable engineering practices.

Apr 2011 — Dec 2022

Professional Photographer

Freelance

  • Led teams of 3–5 photographers and videographers for events, advertising, and concerts.
  • Managed client requirements, production schedules, and delivery; introduced cloud storage to streamline collaboration.