(Senior) Backend Engineer (FinTech / SaaS)

What you will do: • Design, build, and maintain scalable backend APIs and platform services

• Develop backend systems using Node.js, Express.js, and PostgreSQL

• Integrate with banking, payment, and financial APIs

• Collaborate with cross-functional product and engineering teams on new platform capabilities

• Contribute to system architecture and technical design decisions

• Ensure backend reliability, performance, and scalability

• Support the development of fintech and SaaS product features for international markets

• Work closely with overseas stakeholders and distributed engineering teams

What you will need: • Strong backend engineering experience with modern JavaScript ecosystems

• 3-5+  years of software engineering experience

• Deep experience with and understanding of:

• JavaScript

• Node.js

• Express.js  framework

• APIs

• Databases (PostgreSQL)

• Architecture

• Fintech web applications

• Good understanding of API design and backend system integration

• Comfortable working in fast-paced startup or product-driven environments

• Strong ownership mindset and ability to work independently

• Excellent collaboration and communication skills

• Fluent English communication skills are essential

• Ability to work flexible hours to collaborate with US-based teams

• Candidates should already be based in Taipei