Sustaining Software Engineer, Cloud & Virtualization Platform

Arcfra Pte. Ltd.; Singapore; On-site; SGD 100,000 - 180,000; Full time

Job summary

Arcfra Pte. Ltd. is seeking a Sustaining Software Engineer with hands-on experience in virtualization, cloud infrastructure, and software development using Python or Go.

You will maintain and improve our virtualization and cloud platform products, troubleshoot production issues, and deliver reliable fixes. You will work directly with source code, system logs, APIs, and distributed cloud services, collaborating with support, field teams, QA, and core developers to diagnose complex issues and

Qualifications

• Bachelor's degree or above in CS/CE/SE or related field.
• Professional software development experience with Python or Go.
• Strong Linux administration and troubleshooting.
• Solid understanding of operating systems, processes, threads, networking, storage.
• Experience with virtualization technologies or cloud infrastructure.
• Familiarity with KVM, QEMU, libvirt, OpenStack, or VMware.
• Experience troubleshooting REST APIs or distributed control-plane components.
• Excellent debugging and root-cause analysis skills.
• Ability to read and modify production code and communicate findings in English and Chinese.
• Willingness to work with customer-facing teams on complex incidents.
• Singapore citizen, permanent resident, or hold a valid Singapore work permit.

Responsibilities

• Maintain and improve virtualization and cloud platform products.
• Investigate customer-reported issues involving VMs, hosts, clusters, networking, storage, and orchestration.
• Reproduce production issues and perform root-cause analysis.
• Develop, test, review, and deliver bug fixes using Python or Go.
• Troubleshoot problems across application, service, OS, virtualization, networking, and storage layers.
• Analyze logs, traces, metrics, API requests, service states, database records, and configurations.
• Diagnose issues involving VM lifecycle management, scheduling, HA, live migration, and resource management.
• Collaborate with support and field engineering teams on escalations.
• Provide guidance, workarounds, diagnostic procedures, and corrective actions for production issues.
• Collaborate with core engineering on architectural defects and long-term improvements.
• Develop scripts, diagnostic tools, automated tests, and troubleshooting utilities.
• Improve monitoring, logging, observability, upgradeability, and reliability.
• Participate in release validation and backport fixes to supported versions.
• Write technical documentation and internal knowledge-base articles.

Skills

Python

Go

Linux

Root-cause analysis

English & Chinese

Distributed systems

Education

Bachelor's degree in Computer Science / Software Engineering

Tools

KVM

QEMU

libvirt

VMware vSphere/ESXi

OpenStack

Container runtimes

Cloud management platforms

Hyper-converged infrastructure

Job description

Arcfra Pte. Ltd. is seeking a Sustaining Software Engineer with hands-on experience in virtualization, cloud infrastructure, and software development using Python or Go.

You will maintain and improve our virtualization and cloud platform products, troubleshoot production issues, and deliver reliable fixes. You will work directly with source code, system logs, APIs, and distributed cloud services, collaborating with support, field teams, QA, and core developers to diagnose complex issues and