Leong Xin Nan

Java Developer (Fund Risk) @ Ant International

About

Leong Xin-Nan (Alex) is a backend engineer with experience building reliable high-performance systems across fintech, banking and risk management. He works with Go, Java, Python and cloud-native technologies and has hands-on expertise with AWS, Docker and distributed systems.At Ant International, he designs and optimises fund-risk tools achieving millisecond-level performance and improving reconciliation efficiency by 50%. Previously at GXBank, he participated in backend integration for insurance products contributing to a launch that surpassed 50,000 policy purchases in its first month. He also developed internal tools that strengthened QA, observability and on-call workflows including an award-winning troubleshooting portal.His background includes chatbot development for financial institutions, IEEE-published research in assistive technology and full-stack engineering across multiple frameworks. Based in Malaysia, Leong is actively seeking opportunities locally or relocating to Japan or Singapore to contribute to teams building scalable impactful technology.

Country

Malaysia

City

Federal Territory of Kuala Lumpur

Industry

Information Technology & Services

Skill

Spring Framework, Sofa Boot, Site Reliability Engineering, MySQL, Redis, Apache Kafka, Amazon SQS, gRPC, Agile Methodologies, API Development, Jakarta Servlet, Prompt Engineering, Generative AI, javascipt, AWS Lambda, Serverless Computing, Amazon ECS, Amazon Web Services (AWS), Cloud Computing, Amazon EC2

Experience

Java Developer (Fund Risk)

Ant International

2025-8 - Present · 1 yr 2 mos

Federal Territory of Kuala Lumpur, Malaysia

Backend Engineer

GXBank

2024-5 - 2025-8 · 1 yr 4 mos

Selangor, Malaysia

- Laid the groundwork for integrating insurance products into the bank’s application. - Successfully launched an insurance product, achieving over 50k policy purchases within the first month. - Developed an internal tool for date-specific testing without altering system time. - Won first prize in GxBank’s Internal Hackathon, which sought to address challenges encountered by on-call engineers, technical support staff, and quality assurance testers. Our solution was a user-friendly portal named Overseer, which offered a centralised platform for troubleshooting issues on Datadog logs and alerts, database queries, and Jira technical support tickets.

Programmer

Silverlake

2023-12 - 2024-4 · 5 mos

Malaysia

- Participated in the research and development phase of a chatbot application, contributing to its conceptualization and implementation. - Engaged in prompt engineering, actively involved in crafting and fine-tuning prompts to enhance user interactions and optimize performance. - Contributed to the development of a chatbot configuration system using Java, enabling efficient configuration and deployment of chatbots across various platforms.

Software Engineering Ninja

Infront Consulting Group Asia Pacific

2022-5 - 2022-8 · 4 mos

Selangor, Malaysia

- Assisted in software development projects using Django, Python, JavaScript, and Vue.js. - Collaborated with experienced teams to gain hands-on experience in innovative solutions. - Supported code quality through testing and adherence to best practices. - Eagerly embraced Agile methodologies, contributing to project progress and learning.