全职 Senior Linux Systems Engineer 工作, 薪水 up to SGD 8,000, KAROOOOO MANAGEMENT COMPANY PTE. LTD. Central Region (Singapore) 公司招聘中 - Ricebowl

About the Role

You will be a hands-on member of the global Systems team responsible for operating and evolving Cartrack's large-scale, multi-region Linux infrastructure spanning Africa, Europe, and Asia. The estate comprises 1,000+ Linux servers, hyperconverged compute, distributed databases, and container platforms — all supporting a 24/7 fleet telematics platform.

What You Will Do

Infrastructure & Virtualisation

• Provision, configure, and maintain bare metal and virtual machines on Nutanix AHV/Prism hyperconverged infrastructure across ZA, EU, and ASIA data centres

• Manage Proxmox virtualisation nodes and VM lifecycle

• Deploy and operate Docker containers and Kubernetes clusters (including Rancher-managed K8s)

• Implement and maintain Infrastructure as Code (IaC) and configuration management using Ansible, Puppet, or CFEngine

• Maintain OS standards across SUSE Linux Enterprise Server, Ubuntu LTS, and RHEL/CentOS fleets
  

Database Administration

• Administer large-scale PostgreSQL deployments — performance tuning, replication, patching, backup/recovery — across hundreds of database instances globally

• Monitor and optimise query performance; respond to lock contention and capacity events

• Maintain database standards, schema migrations, and DR runbooks
  

Basic Networking (Server-side)

• Configure server network interfaces, bonding, VLANs, and static routes on Linux hosts

• Manage host-based firewalls (firewalld / iptables) and basic DNS resolution

• Liaise with the Network team for advanced firewall policy, routing, VPN, and switching requirements
  

Identity & Access Management

• Administer FreeIPA (Kerberos, PKI/CA, HBAC, sudo policy) and Samba AD / LDAP identity services

• Manage user and host enrolment, group policy, and SSH key distribution
  

Monitoring & Observability

• Operate and extend Zabbix monitoring across the full server estate

• Maintain Graylog centralised log management

• Perform capacity planning and periodic performance reporting; make recommendations for upgrades
  

Messaging & Streaming

• Support Apache Kafka and RabbitMQ message queue infrastructure underpinning the comms engine and mswitch layers
  

CI/CD & Developer Tooling

• Maintain GitLab (primary, secondary, registry) and Jenkins CI infrastructure

• Collaborate with Software Engineers on pipeline design and deployment automation
  

Operations

• Enforce automated backup operations and validate recovery procedures

• Apply OS patches and security updates on a regular, scheduled basis

• Support the Zammad ticketing system and respond to escalated incidents

• Administer Zimbra mail infrastructure

• Contribute to GRC compliance activities tracked in Eramba
  

What You Bring

Essential

• 5+ years Linux system administration (SUSE, Ubuntu, RHEL/CentOS)

• Hands-on Nutanix AHV/Prism administration — node management, storage pools, VM provisioning, cluster operations

• Solid PostgreSQL DBA skills — replication, PITR backup, vacuum tuning, connection pooling

• Configuration management experience — Ansible preferred; Puppet or CFEngine also relevant

• Kubernetes and Docker — deploying, scaling, and troubleshooting containerised workloads

• FreeIPA / Samba AD / LDAP identity management and Kerberos

• Experience with Zabbix or comparable monitoring platforms

• Linux server networking fundamentals — bonding, VLANs, routing, firewalls/iptables

• Scripting proficiency — Bash; Python advantageous

• Hybrid on-premises + cloud (AWS) environment experience
  

Advantageous

• Kafka and RabbitMQ operational experience

• GitLab administration and CI/CD pipeline development

• Graylog or ELK log management

• Proxmox virtualisation

• Eramba or other GRC tooling

• BS Computer Science or equivalent industry qualification
  

Personal Attributes

• Self-disciplined, reliable, and accountable

• Strong documentation and communication habits

• Comfortable operating across time zones in a globally distributed team

• Willingness to participate in on-call rotation

Karooooo Management Company Pte Ltd is a leading global provider of data analytic solutions for mobile asset management, asset recovery and workforce optimisation based on a proven Software-as-a-Service platform. Fleet management, Stolen Vehicle Recovery and insurance telematics services remain its core business, with a focus on technology development to enhance customer experience. The company is a service-centric organisation focusing on the in-house design, development and installation of telematics technology and data analytics.

Karooooo Management Company Pte Ltd technology is widely accepted by motor manufacturers and insurers. Its customer telematics web interface provides a comprehensive set of features ensuring the optimisation of both fleet and human resources. As an expansion of its integrated service offering, Karooooo also provides driver risk assessment offerings in the insurance telematics field.