Database Reliability Engineer (Junior) - HK

Your mission

We are looking for a motivated Junior Database Reliability Engineer (DBRE) to join our expanding IT Operations team. The successful candidate will be part of a large global multi-international organization working with an array of NoSQL database platforms and applications. You will own the end-to-end lifecycle of NoSQL database instances.

What You Will Do

• Lifecycle Management: Own the full lifecycle of NoSQL database instances, including provisioning, configuration, upgrades, monitoring, performance tuning, and decommissioning.

• Provisioning & Deployment: Use Infrastructure-as-Code tools (Terraform, Ansible, Puppet) to provision and manage NoSQL clusters in a mixture of containerized (Docker/Kubernetes) and non-containerized environments.

• Monitoring & Observability: Implement and maintain monitoring dashboards, alerting, and health checks for distributed NoSQL clusters to enable proactive incident detection and resolution.

• Performance Engineering: Profile server resource usage, analyze query and cluster-level performance, identify bottlenecks, and implement data models, indexing strategies, and configuration changes to optimize throughput and latency.

• Capacity Planning: Plan and model resource requirements based on usage trends, and recommend right-sizing or scaling actions to prevent capacity-related incidents.

• Incident & Change Management: Follow established change management processes, participate in on-call rotations, and contribute to post-incident reviews to drive long-term reliability improvements.

• Cross-Data Centre Replication: Support replication and failover configurations across data centres to ensure high availability and disaster recovery.

• Automation: Develop and maintain automation scripts (Shell, Python) and tooling to reduce manual operational overhead and improve consistency.

• Documentation: Prepare clear, well-structured documentation covering database architecture, runbooks, procedures, and operational standards.

• Collaboration: Work closely with SREs, platform engineers, application teams, and business stakeholders to understand requirements and deliver reliable database services.

What you’ll bring

• 2+ years of experience in IT operations, site reliability, database administration, or a related engineering role.

• Solid understanding of NoSQL databases (e.g., Cassandra, Elasticsearch, MongoDB) — hands-on experience with at least one of these is expected.

• Strong Linux administration skills and comfort working in shell-based environments.

• Experience with Infrastructure-as-Code and configuration management tools (Terraform, Ansible, Puppet).

• Proficiency in scripting languages (Shell, Python, or Ruby).

• Familiarity with Docker and/or Kubernetes for containerized database deployments.

• Basic knowledge of SQL databases (MySQL, PostgreSQL, Oracle, etc.) is a plus.

• Experience with Git and working in an open-source version control workflow.

• Working knowledge of *nix system tuning (kernel parameters, filesystem, memory, CPU) is a plus.

• Strong interpersonal skills, the ability to work in a team, and a proactive problem-solving mindset.

• Up-to-date knowledge of database reliability best practices and industry standards.

• Ability to plan and model resource requirements from high-level specifications.

• Training or certifications in cloud platforms (AWS/Azure/GCP) or NoSQL databases is a plus.

• Able to communicate fluently in written and spoken English.