The posting
Shape the utilities market of the future with us!
At CUCULUS, we build intelligent digital solutions that help utilities become more efficient, sustainable, and future-ready. By joining our technology team, you’ll work on business-critical systems that power large-scale utility operations, contribute to high-impact projects, and collaborate with global teams across cloud and hybrid environments.
What is the role about?
As a Senior Database Administrator, you will be responsible for highly available, mission-critical database environments and ensure their availability, performance, security, resilience and recoverability. You will:
- Administer and support Oracle 19c databases, including RAC and Data Guard.
- Manage PostgreSQL databases across on-premise and cloud environments.
- Administer and support ClickHouse database environments.
- Support business-critical 24/7/365 production operations within defined SLAs.
- Perform database performance tuning, SQL optimization and capacity planning.
- Implement proactive database monitoring and health checks.
- Plan and execute database migrations, upgrades and patching.
- Maintain backup, restore and recovery strategies.
- Support High Availability and Disaster Recovery environments.
- Deploy and support database workloads on Kubernetes.
- Troubleshoot database, Linux, storage, connectivity and performance issues.
- Develop scripts and automation for recurring DBA activities.
- Perform deep root-cause analysis for database-related incidents.
- Support critical production incidents and customer escalations.
- Maintain DBA procedures, runbooks and technical documentation.
- Work closely with System Engineering, Support and Development teams.
We are always looking for support in the following areas:
Your work will contribute directly to:
- Production database availability
- Database reliability and resilience
- Performance and scalability
- Faster incident resolution
- SLA fulfilment
- Backup and recovery readiness
- HA/DR readiness
- Proactive monitoring
- Automation and operational efficiency
- Continuous improvement of database operations
Your Mission & Impact
Your mission is to ensure that our database platforms remain stable, performant, secure, scalable and recoverable. You will take ownership of complex database issues from investigation through recovery and root-cause analysis while proactively identifying risks before they affect production systems or customers
Your Role at a Glance
We are looking for a Senior Database Administrator with strong expertise in Oracle, PostgreSQL and ClickHouse, backed by solid Linux, Kubernetes and cloud knowledge. You will manage and support highly available, mission-critical production database environments across on-premises, cloud and hybrid platforms. The role requires strong hands-on technical capability, independent troubleshooting, production ownership and the ability to support critical database incidents within strict SLAs.
Must-haves (to thrive in this role)
Strong hands-on experience with Oracle 19c, including:
- Oracle RAC
- Data Guard
- Database administration
- Performance tuning
- SQL optimization
- Execution analysis
- Backup and recovery
- Capacity management
- Patching
- Upgrades
- Migration
- Security
- High Availability
- Disaster Recovery
PostgreSQL Administration Strong production PostgreSQL administration, including:
- Installation and configuration
- Database administration
- Backup and restore
- Replication
- PITR
- Recovery
- Performance analysis
- Query troubleshooting
- Migration
- Upgrades
- Capacity management
- Security
- High Availability
ClickHouse Administration Hands-on ClickHouse administration and operational support, including:
- Installation and configuration
- Cluster operations
- Query troubleshooting
- Performance monitoring and tuning
- Storage and capacity management
- Backup and recovery
- Replication
- High Availability
Performance & Capacity Management Monitor, analyse and optimize database performance, including:
- SQL/query optimization
- Execution analysis
- Database performance tuning
- CPU and memory utilization
- Storage utilization
- Capacity planning
- Connection/session analysis
- Bottleneck identification
- Storage growth
- Database scalability
Proactively identify capacity and performance risks before they become production incidents. Monitoring & Observability Implement, maintain and continuously improve database monitoring and observability. Experience with MONIT, Grafana, Prometheus or equivalent tools is expected. Monitor:
- Database availability
- Database health
- Performance
- Capacity
- Storage
- Connections and sessions
- Replication
- Backup status
- HA/DR status
- Logs
- Alerts
Backup, Recovery & Disaster Recovery Design, maintain and support reliable database backup and recovery capabilities, including:
- Backup strategies
- Restore procedures
- PITR
- Replication
- Recovery procedures
- Recovery validation
- Disaster Recovery
- Failover/failback
- Recovery testing
- Production recovery
Linux Administration Strong hands-on Linux administration and troubleshooting skills, including:
- Processes and services
- CPU and memory
- Disk and storage
- File systems
- Permissions
- Networking
- Logs
- Security
- Performance troubleshooting
The DBA should be able to determine whether a database issue originates from the database itself or from the underlying operating system, storage, infrastructure or network. Kubernetes Experience supporting databases in production Kubernetes environments, including:
- Pods
- Services
- Networking
- Storage
- Persistent volumes
- Configuration
- Monitoring
- Logs
- Database workload troubleshooting
Ability to deploy and support database workloads on Kubernetes. Cloud & Infrastructure Experience with:
- Oracle Cloud Infrastructure (OCI)
- AWS and/or Azure
- Cloud database services
- RDS/PaaS database services
- Cloud networking
- Storage
- Security
- Access control
- HA and multi-AZ concepts
- Backup and recovery
- Hybrid environments
Scripting & Automation Experience with Shell/Bash, Python or equivalent scripting technologies. Use automation to improve:
- Database health checks
- Monitoring
- Backup validation
- Capacity checks
- Diagnostics
- Log collection
- Reporting
- Repetitive DBA activities
- Operational efficiency
Database Security & Reliability Support and maintain:
- Database access controls
- Users and roles
- Permissions
- Security patches
- Database hardening
- Linux security
- Operational security controls
- Database reliability standards
Incident Management & Root-Cause Analysis Independently handle complex and critical database incidents. Responsibilities include:
- Incident investigation
- Database troubleshooting
- Service recovery
- Root-cause analysis
- Corrective actions
- Preventive actions
- Technical escalation
- Post-incident review
- Documentation of findings and solutions
The objective is not only to restore the database service but also to identify the underlying root cause and prevent recurrence.
SLA & Production Support Operate within SLA-driven production environments. You will:
- Prioritize incidents according to severity and customer impact.
- Support critical production incidents.
- Identify potential SLA risks early.
- Escalate when specialist or additional technical support is required.
- Maintain clear technical documentation and ticket updates.
- Drive database issues through sustainable resolution.
Experience with structured ITSM/ticketing tools, preferably Jira / Jira Service Management, is an advantage. Documentation & Knowledge Management Create, maintain and continuously improve:
- DBA procedures
- SOPs
- Runbooks
- Troubleshooting guides
- Backup/recovery procedures
- Monitoring procedures
- Known-error documentation
- Knowledge-base articles
Cross-Skilling – ZONOS Knowledge The primary responsibility of this role remains Database Administration. As part of the Support cross-skilling approach, the DBA will progressively acquire operational knowledge of the ZONOS platform to better understand how databases interact with the wider application environment. This includes basic operational understanding of:
- ZONOS architecture and components
- Application/database dependencies
- Application health
- Application logs
- Linux/Kubernetes dependencies
- Database/application connectivity
- Monitoring
- Standard documented ZONOS troubleshooting procedures
- This knowledge enables the DBA to contribute more effectively to L3 incident investigation and work closely with the E2E Support team.
- The DBA remains the database specialist. Complex ZONOS application troubleshooting, architecture, product defects and code-level investigation remain with the respective E2E/System Engineering/Development specialists.
- Previous ZONOS knowledge is not required at recruitment and will be developed through structured knowledge transfer and practical experience.
24/7 Production Operations Willingness and capability to participate in 24/7/365 production Support operations according to the defined shift/on-call model. This may include scheduled:
- Day/night coverage
- Weekend coverage
- Public-holiday coverage
- Critical incident support
Structured technical handover is required to ensure service continuity.
Required Skills & Qualifications
- Minimum 5 years of relevant DBA experience, including at least 3 years supporting business-critical production database environments.
- Strong Oracle 19c administration.
- Strong Oracle RAC and Data Guard expertise.
- Strong Oracle performance tuning and SQL optimization.
- Strong PostgreSQL administration.
- PostgreSQL backup, replication, PITR, recovery and migration.
- Hands-on ClickHouse administration.
- Strong Linux administration and troubleshooting.
- Kubernetes production knowledge.
- Experience supporting database workloads on Kubernetes.
- Shell/Bash/Python or equivalent scripting skills.
- OCI, AWS, Azure or equivalent cloud experience.
- Strong monitoring and observability capabilities.
- Strong backup, restore and recovery expertise.
- Experience with HA and DR environments.
- Strong production troubleshooting and RCA skills.
- Experience operating within SLA-driven production environments.
- Ability to handle critical production incidents independently.
- Strong documentation and knowledge-sharing skills.
Nice-to-haves (great if you have them, but not a dealbreaker)
- Experience with large-scale enterprise production systems.
- Hybrid and multi-cloud experience.
- Jira / Jira Service Management.
- Grafana, Prometheus, MONIT or equivalent monitoring tools.
- Terraform.
- Ansible.
- Docker.
- Kubernetes Operators.
- OKE.
- Jenkins.
- GitLab.
- GitHub Actions.
Your profile
You bring:
- Strong analytical and problem-solving skills.
- Deep database troubleshooting capability.
- Strong ownership and accountability.
- Ability to work independently on critical production systems.
- Ability to work effectively under pressure.
- A proactive approach to performance, security and reliability.
- Clear technical communication.
- Strong collaboration across technical teams.
- Willingness to continuously develop your technical knowledge.
- Willingness to share knowledge and support cross-skilling.
- Willingness to support 24/7 production operations.
What You Bring to the Team
- Strong problem-solving skills and ability to handle high-pressure production issues
- Experience working in high-availability and disaster recovery environments
- Clear communication and collaboration skills for cross-team coordination
- A proactive mindset with attention to performance, security, and reliability
- Willingness to support 24×7 operations and participate in on-call rotations
Good to Have
- Infrastructure as Code (Terraform, Ansible)
- Docker, Kubernetes Operators, OKE
- CI/CD tools (Jenkins, GitLab, GitHub Actions)
