Backend Engineer - Fintech APIs & Scalable Payments

StraitsX; Kuala Lumpur; On-site; MYR 120,000 - 180,000; Full time

Job summary

StraitsX is seeking a Backend Engineer to join the Card Issuing Team. You will design, develop, and maintain backend services and APIs enabling card programs across Southeast Asia. You’ll work with payment providers, third-party systems, and build scalable fintech infrastructure.

The role requires 3–5 years of backend experience, strong Golang, RESTful APIs, and Kubernetes. Join a fast-paced team building issuing platforms with emphasis on reliability and security.

Qualifications

• Bachelor's degree in Computer Science, Engineering, or a related field.
• 3–5 years of backend engineering experience with production systems.
• Strong proficiency in Golang.
• Experience building and maintaining RESTful APIs.
• Familiarity with microservices architecture.
• Experience with MariaDB/MySQL.
• Familiarity with Git and GitHub workflows.
• Experience with Docker and CI/CD pipelines.
• Strong debugging, troubleshooting, and problem-solving skills.
• Willingness to learn and operate in a fast-paced environment.
• Familiarity with AI-assisted development tools such as Claude, Codex, Cursor, or similar.
• Familiarity with Kubernetes, cloud infrastructure, and observability tools.

Responsibilities

• Design, develop, test, and maintain backend services and APIs for the Card Issuing platform.
• Build and maintain high-availability scalable systems supporting card issuance and payment processing.
• Work with third-party APIs and payment integrations for local and global card transactions.
• Troubleshoot and resolve system issues, performance bottlenecks, and scalability challenges.
• Support regression testing, integration testing, and system reliability improvements.
• Address bugs, technical debt, and operational support requests.
• Participate in sprint planning, code reviews, and technical discussions.
• Implement security and engineering best practices across services and infrastructure.
• Build internal operational tools and reporting systems for platform management.
• Support incident response and on-call duties when required.
• Collaborate closely with Product, Design, QA, and Operations teams on feature delivery and platform improvements.

Skills

Backend engineering

RESTful APIs

Microservices

Problem solving

Education

Bachelor's degree in Computer Science, Engineering, or a related field

Tools

Golang

MariaDB/MySQL

Docker

CI/CD

Git/GitHub

Kubernetes

Cloud infrastructure

Observability tools

Claude

Codex

Cursor

Job description

StraitsX is seeking a Backend Engineer to join the Card Issuing Team. You will design, develop, and maintain backend services and APIs enabling card programs across Southeast Asia. You’ll work with payment providers, third-party systems, and build scalable fintech infrastructure.

The role requires 3–5 years of backend experience, strong Golang, RESTful APIs, and Kubernetes. Join a fast-paced team building issuing platforms with emphasis on reliability and security.