Database Engineer (DBA / MongoDB)

We are looking for an experienced Database Administrator (DBA) with strong hands-on expertise in MongoDB administration and database performance tuning . The successful candidate will be responsible for maintaining reliable, secure, highly available and high-performing database environments supporting business-critical applications.

Working Hours: Mon-Fri Working Location: Central (on-site) Salary Package: Up to $7,500 (basic) + AWS +VB

Key Responsibilities

• Administer, configure, maintain and support MongoDB databases across development, testing and production environments.
• Monitor database health, availability, capacity and performance to ensure stable operations.
• Perform database performance tuning , identifying and resolving performance bottlenecks, slow queries and resource constraints.
• Analyse and optimise queries, indexes, execution behaviour and database configurations to improve application and database performance.
• Configure and manage MongoDB Replica Sets and sharded environments to support high availability and scalability.
• Perform database installation, configuration, upgrades, patching and migrations.
• Develop and maintain appropriate backup, restore and disaster recovery (DR) procedures.
• Troubleshoot database incidents, outages, replication issues and performance degradation, including root cause analysis and preventive actions.
• Conduct regular database health checks and capacity planning to support future growth.
• Implement and maintain database security, authentication, authorisation and access controls.
• Support application releases, deployments and database changes while minimising production impact.
• Automate routine database administration and monitoring activities using scripting where applicable.
• Work closely with application developers, infrastructure, cloud and DevOps teams to troubleshoot issues and improve database performance.
• Maintain database configurations, operational procedures, technical documentation and support runbooks.
• Provide production support and participate in standby/on-call support where required.

Requirements

• Bachelor Degree in Computer Science, Information Technology, Engineering or a related discipline.
• Relevant experience in Database Administration , preferably supporting enterprise or production environments.
• Strong hands-on experience with MongoDB administration .
• Good understanding of MongoDB architecture, Replica Sets, sharding, indexing and replication .
• Strong experience in database performance monitoring, troubleshooting and performance tuning .
• Experience analysing and optimising slow queries, indexing strategies and database resource utilisation .
• Knowledge of High Availability (HA), backup/recovery and Disaster Recovery (DR) concepts.
• Experience with database upgrades, patching and migration activities.
• Good knowledge of Linux/Unix environments.
• Scripting or automation experience using Python, Bash/Shell or equivalent would be advantageous.
• Exposure to cloud database environments such as AWS, Azure or GCP would be advantageous.
• Experience with MongoDB Atlas, Ops Manager or database monitoring tools would be an advantage.
• Exposure to other relational or NoSQL databases such as PostgreSQL, MySQL, Microsoft SQL Server, Oracle, Redis or Cassandra would be beneficial.
• Strong troubleshooting, analytical and problem-solving skills.
• Ability to work independently and collaborate effectively with cross-functional technical teams.

Key Technical Skills

MongoDB | Database Administration | Performance Tuning | Query Optimization | Indexing | Replica Sets | Sharding | High Availability | Backup & Recovery | Disaster Recovery | Linux/Unix | Database Monitoring | Production Support | Python/Bash

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Elane Yap Theng Yu- R1989397 ScienTec Consulting Pte Ltd - 11C5781