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