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IO Tech Solutions Limited

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Senior Java / Full-stack Engineer – Trading & Accounting Systems

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Summary

Senior Java/full-stack engineer building and modernizing trading and portfolio accounting platforms for a global financial institution's Private Wealth Management Technology team in Hong Kong. Day-to-day work centers on high-performance microservices, event-driven streaming (Kafka/MQ), and low-latency distributed systems using Java, Spring Boot, and relational databases like DB2.

My client, a leading global financial institution, is looking for a Senior Java / Full-stack Engineer to join their Private Wealth Management Technology team.

This role sits at the core of building and enhancing both trading platforms and portfolio accounting systems, supporting high-net-worth clients across Asia and globally. You will work on high-performance distributed systems, microservices, and data-intensive applications across multiple asset classes and business domains.

Key Responsibilities

  • Design, develop, and modernize trading and portfolio accounting platforms using Java and related technologies
  • Build scalable microservices, core libraries, and reusable backend components
  • Develop event-driven systems and data streaming workflows (e.g., Kafka, MQ)
  • Contribute to system architecture, design reviews, and engineering best practices
  • Prototype, enhance, and refactor legacy components into modern tech stacks
  • Monitor, troubleshoot, and optimize performance of high-volume, low-latency systems
  • Collaborate with global teams (engineering, QA, product, and architecture)
  • Support production systems (L3) and ensure system stability and reliability
  • Follow Agile methodologies and adopt DevOps practices (CI/CD, automation)

Required Skills

  • Strong Core Java skills with solid Object-Oriented Design experience
  • Hands-on experience with Spring Boot, REST APIs, and microservices architecture
  • Experience with multithreading and building high-performance backend systems
  • Knowledge of event/message-driven architectures (Kafka, MQ, etc.)
  • Strong understanding of relational databases (e.g., DB2) and data modeling
  • Experience working with distributed systems and large-scale data processing
  • Strong debugging, problem-solving, and analytical skills
  • Good communication skills and ability to work in global teams

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