Junior L2 Application Support Engineer (Unix/Linux & SQL)

Luxoft Singapore; Singapore; On-site; SGD 60,000 - 96,000; Full time

Job summary

Luxoft Singapore is seeking an experienced L2/L3 production support professional to maintain and support production applications. The role emphasizes incident management, root-cause analysis, and close collaboration with development, infrastructure, and business teams.

Ideal candidates will have strong Unix/Linux and SQL skills, hands-on experience with Grafana/ELK for monitoring, and familiarity with MQ/Kafka messaging.

Qualifications

• 4 to 6 years of experience in Application/Production Support (L2/L3).
• Hands-on Unix/Linux proficiency.
• Strong SQL skills for data analysis and troubleshooting.
• Experience supporting business-critical production apps.
• Proven incident management and root-cause analysis abilities.
• Experience with monitoring/observability tools (Grafana/ELK).
• Familiarity with messaging (MQ/Kafka) and CI/CD processes.
• Ability to manage multiple priorities in a fast-paced production environment.

Responsibilities

• Provide L2/L3 application support for production systems, ensuring high availability and operational stability.
• Investigate, troubleshoot, and resolve application, system, and data-related issues.
• Perform incident management, problem management, and root-cause analysis for production incidents.
• Execute SQL queries to analyze data and support business investigations.
• Use Unix/Linux environments for monitoring, diagnostics, and automation.
• Monitor health with Grafana, ELK, MQ/Kafka and related platforms.
• Collaborate with development, infra and business teams to drive timely resolutions.
• Support deployments, release validation and production readiness processes.
• Contribute to process improvements and operational excellence initiatives.
• Participate in on-call rotations as required.

Skills

Unix/Linux

SQL

Incident management

L2/L3 production support

Troubleshooting

Communications

Stakeholder management

Grafana

ELK

MQ/Kafka

CI/CD

Tools

Grafana

ELK

MQ

Kafka

Job description

• As a member of our Software Engineering Group, you will play a key role in supporting and maintaining business-critical applications in a production environment. The primary focus of this role is L2/L3 application support, incident management, troubleshooting, and ensuring system stability and availability. You will work closely with development teams, infrastructure teams, and business stakeholders to investigate issues, perform root cause analysis, and support continuous service improvements.
• This position is ideal for professionals with a strong production support background and hands-on expertise in Unix/Linux and SQL who are comfortable operating in a fast- paced support environment.

Responsibilities:

• Provide L2/L3 application support for production systems, ensuring high availability and operational stability.
• Investigate, troubleshoot, and resolve application, system, and data-related issues.
• Perform incident management, problem management, and root cause analysis for production incidents.
• Execute SQL queries to analyze data, troubleshoot issues, and support business investigations.
• Utilize Unix/Linux environments for monitoring, diagnostics, log analysis, automation, and operational support activities.
• Monitor application health using tools such as Grafana, ELK, MQ/Kafka, and related monitoring platforms.
• Collaborate with development, infrastructure, and business teams to drive timely issue resolution.
• Support deployment activities, release validation, and production readiness processes.
• Contribute to process improvements, documentation, and operational excellence initiatives.
• Participate in on-call or production support rotations as required.

Mandatory Skills Description:

• 4 to 6 years of experience in Application Support, Production Support, or a similar L2/L3 support role.
• Strong hands-on experience working with Unix/Linux operating systems.
• Strong hands-on SQL skills, including query writing, troubleshooting, and data analysis.
• Proven experience supporting business-critical applications in production environments.
• Strong troubleshooting, incident management, and root cause analysis skills.
• Experience working with monitoring and observability tools such as Grafana and ELK.
• Exposure to messaging technologies such as MQ or Kafka.
• Familiarity with CI/CD processes and release support activities.
• Ability to manage multiple priorities in a fast- paced production support environment.
• Strong communication and stakeholder management skills.

Nice-to-Have Skills Description:

• Basic to intermediate knowledge of Java.
• Experience with Python or Shell (Bash) scripting for automation and operational tasks.
• Knowledge of WebSocket and SFTP integrations.
• Exposure to SRE practices and production monitoring frameworks.