Looking for a job

Joan Yang

@joanyang1

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I build high-throughput fintech systems, data products, and Agile delivery teams.

Singapore

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What I'm looking for

I'm looking to build scalable, high-impact systems with collaborative cross-functional teams that value open communication, diverse perspectives, Agile delivery, and continual learning.

At Red Dot Payment, I build high-throughput fintech systems and data products that support daily processing of 30,000 transactions. I translate complex business requirements into scalable software, data flows, and system designs.

I architected end-to-end interactions for gateway switching, fraud detection, and recurring transaction processing, using UML sequence, activity, and class diagrams. I also developed REST APIs in Java and Spring to connect applications with AWS Aurora.

I reduced internal report-building workload from two weeks to four hours by creating a self-service Mendix interface. I have also merged and curated data from two legacy databases for more than 3,000 merchants, resolving discrepancies along the way.

I lead cross-functional delivery for frontend and backend ACL-driven modules and champion Agile practices as a Scrum Master. I value open communication, diverse perspectives, and continual learning while building reliable cloud data pipelines and microservices.

Experience

Work history, roles, and key accomplishments

Data / Software Engineer

Red Dot Payment Pte Ltd

Aug 2019 - Feb 2026 (6 years 6 months)

Architected end-to-end system interactions and data flows, producing UML diagrams to integrate gateway switching, fraud detection, and recurring transaction processing. Developed a user-friendly interface in Mendix, reducing workload from 2 weeks to 4 hours, and led a cross-functional team to deliver frontend and backend systems.