Database Administrator

Helius Technologies Pte Ltd; Singapore; On-site; SGD 120,000 - 150,000; Full time

Job summary

Helius Technologies Pte Ltd in Singapore seeks an experienced Operations DBA to support mission‑critical systems in a secured environment, focusing on production stability, high availability, incident response and disaster recovery for MSSQL and MongoDB.

The role involves on‑call support, performance tuning, capacity planning, backup/restore strategies, and compliance with government security policies. Singapore Citizens with clearance eligibility are encouraged to apply.

Qualifications

• 5–8+ years of DBA experience.
• Strong hands‑on experience in Microsoft SQL Server (Always On, HA, Performance Tuning).
• MongoDB (Replica Sets, Backup/Restore).
• Experience supporting 24/7 mission‑critical systems.
• Experience handling Severity 1 production incidents.
• Experience in risk and change management in government/regulated environments.

Responsibilities

• Provide L2/L3 support for MSSQL and MongoDB in Production and DR environments.
• Participate in standby/on‑call roster for critical incidents.
• Troubleshoot outages, failovers, blocking, deadlocks, bottlenecks, and IO constraints.
• Perform root cause analysis and implement preventive measures.
• Manage HA/DR including Always On and replica sets; monitor health and perform patches.

Skills

DBA expertise

Problem solving

Communication

Incident management

Tools

Microsoft SQL Server

MongoDB

Always On

Job description

Role Overview

We are seeking a hands‑on Operations DBA to support the mission‑critical system operating in a secured environment. This role focuses primarily on Production (Day 2) stability, high availability, incident response, performance tuning, and disaster recovery readiness for Microsoft SQL Server and MongoDB platforms supporting 24/7 operations.

• Day 2 Infra Engineers
• Day 2 System Engineers
• Day 2 Software Engineers
• Security & Compliance teams

Key Responsibilities

1. 24/7 Production Database Operations
   • Provide L2/L3 support for MSSQL and MongoDB in Production and DR environments.
   • Participate in standby/on‑call roster for critical incidents.
   • Troubleshoot and resolve:
     • Database outages
     • Always On failover issues
     • Blocking / deadlocks
     • Performance bottlenecks
     • Storage / IOPS constraints
   • Perform root cause analysis (RCA) and implement preventive measures.
2. High Availability & Reliability Management
   • Microsoft SQL Server (MSSQL)
     • Manage Always On Availability Groups.
     • Monitor replication and failover health.
     • Perform database patching and cumulative updates.
     • Maintain backup and restore strategy (Full, Differential, Log backups).
     • Conduct periodic DR drills and restoration validation.
     • Optimize indexing strategies and execution plans.
   • MongoDB
     • Manage Replica Sets and automatic failover.
     • Monitor memory, disk, and index performance.
     • Manage backup/restore and periodic recovery validation.
     • Maintain cluster health and sharding (if applicable).
3. Performance & Capacity Management
   • Conduct proactive health checks.
   • Analyze:
     • Query execution plans (MSSQL)
     • Slow queries and indexing (MongoDB)
   • Perform database tuning and optimization.
   • Forecast capacity growth and scaling requirements.
4. Change & Release Support
   • Review database changes prior to production deployment.
   • Support data migration and release windows.
   • Validate database stability post‑deployment.
   • Ensure proper rollback and recovery procedures are in place.
5. Security & Compliance (Government Environment)
   • Implement database security hardening.
   • Manage:
     • Role‑based access control
     • Auditing and logging
     • Support vulnerability assessment (VA) remediation
   • Ensure compliance with government security policies.
   • Maintain proper documentation and SOPs for audit readiness.

Technical Requirements (Mandatory)

• 5–8+ years of DBA experience.
• Strong hands‑on experience in:
  • Microsoft SQL Server (Always On, HA, Performance Tuning)
  • MongoDB (Replica Sets, Backup/Restore)
• Experience supporting 24/7 mission‑critical systems.
• Experience handling Severity 1 production incidents.
• Experience in supporting application deployment (data patching, data seed, etc.).
• Strong troubleshooting and analytical skills.

Preferred

• Experience in Singapore Government projects.
• Familiarity with virtualized or containerized environments.
• Microservices architecture.
• Integration‑heavy systems (Kafka, REST APIs, ETL).
• Experience in structured ITIL‑based incident management environments.

Soft Skills

• Calm and decisive during major incidents.
• Strong communication skills during incident bridge calls.
• Proactive in identifying operational risks.
• Comfortable working in audit‑heavy and compliance‑driven environments.

Security Requirement

• Must be a Singapore Citizen.
• Must be eligible for Government security clearance.