Senior Backend Engineer

PayNet (Payments Network Malaysia); Kuala Lumpur; On-site; MYR 60,000 - 80,000; Full time

Job summary

PayNet (Payments Network Malaysia) is looking for a Senior Backend Engineer to design and own scalable backend services that support the national payment onboarding platforms. The role requires strong proficiency in Java and experience in building RESTful APIs.

You will develop and maintain backend systems, mentor engineers, and ensure high-performance by optimizing databases and ensuring best engineering practices are upheld. Join us to impact the reliability of Malaysia's payment ecosystem.

Qualifications

• Strong proficiency in at least one backend language such as Java.
• Proven experience building RESTful APIs and scalable backend systems.
• Solid understanding of relational databases and performance optimization.

Responsibilities

• Design and lead architecture for scalable backend systems.
• Develop and maintain backend services and RESTful APIs using relevant languages.
• Review code, mentor junior engineers, and uphold engineering best practices.

Skills

Java

RESTful APIs

SQL

Problem-solving

Agile

Tools

Golang

Node.js

Job description

Why PayNet / Why Now

• Strengthen backend platforms critical to onboarding participants into Malaysia’s payment ecosystem
• Scale and stabilize systems as onboarding volumes, complexity, and integration demands increase
• Reduce long‑term operational and performance risk through better backend architecture and design
• Own backend decisions that directly affect platform reliability, security, and partner experience

TL;DR

• Design and own backend services that underpin critical participant onboarding platforms
• Build scalable, secure, and high‑performance systems used at national scale
• Act as a senior technical owner, shaping architecture and delivery standards
• Mentor engineers while ensuring production‑grade reliability and maintainability

Why This Role Matters

• Backend systems directly impact the reliability and scalability of national payment onboarding
• Poor architectural decisions create long‑term operational risk and rework
• Senior engineers set the technical bar for quality, performance, and security
• Strong backend ownership enables faster delivery without compromising stability

What You Will Actually Do

• Design and lead architecture for scalable, high‑performance backend systems
• Develop and maintain backend services and RESTful APIs using Java, Golang, or Python
• Design and optimize database schemas and queries to ensure performance and data integrity
• Own end‑to‑end delivery from design through deployment and post‑release stability
• Review code, mentor junior engineers, and uphold engineering best practices
• Troubleshoot complex production issues and drive continuous system improvement

Examples of This Role in Practice

• Designing a backend service that scales onboarding without latency or failure risk
• Refactoring database queries to remove performance bottlenecks
• Leading code reviews that prevent security or reliability issues
• Resolving a critical production incident through deep root‑cause analysis
• Collaborating with frontend, DevOps, and product teams to deliver secure solutions

What Will Help You Succeed

Required

• Strong proficiency in at least one backend language such as Java
• Proven experience building RESTful APIs and scalable backend systems
• Solid understanding of relational databases, SQL, and performance optimization
• Strong problem‑solving ability to diagnose and resolve complex technical issues
• Experience mentoring engineers and working in Agile environments

Helpful

• Experience across multiple backend languages or frameworks (e.g. Golang, Node.js)
• Exposure to microservices and distributed systems architecture
• Experience integrating third‑party APIs and external services
• Familiarity with CI/CD pipelines and deployment automation
• Knowledge of backend security best practices (authentication, authorization, data protection)
• Experience with monitoring, logging, and performance tuning tools