Job title: Database Engineer (DBA / MongoDB)

Job Description

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