Application Developer (L2/L3 Support & Automation)

Luxoft; Singapore; On-site; SGD 60,000 - 100,000; Full time

Job summary

Luxoft is seeking an experienced L2/L3 Application Support engineer in Singapore to maintain production systems, manage incidents, and perform root cause analysis. You will work with development and infrastructure teams, run SQL queries for investigations, and monitor health with Grafana/ELK.

You will leverage Unix/Linux expertise, strong communication, and ability to handle multiple priorities in a fast-paced environment. On-call rotations and CI/CD familiarity are part of the role.

Qualifications

• 4–6 years of experience in Application Support, Production Support, or similar L2/L3 roles.
• Hands-on Unix/Linux experience.
• Strong SQL skills for data analysis and troubleshooting.
• Experience supporting business-critical production applications.
• Proven skills in troubleshooting, incident management, and RCA.
• Familiarity with monitoring/observability tools (Grafana, ELK).
• Exposure to MQ or Kafka messaging systems.
• Knowledge of CI/CD processes and release support.

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.
• Utilize Unix/Linux environments for monitoring, diagnostics, log analysis, and automation.
• Monitor application health using Grafana, ELK, MQ/Kafka, and related tools.
• Collaborate with development, infra, and business teams to resolve issues.
• Support deployment activities, release validation, and production readiness processes.
• Contribute to process improvements and on-call/rotation coverage.

Skills

Unix/Linux

SQL

Incident management

Root cause analysis

Production support

On-call rotations

CI/CD

Release support

Tools

Grafana

ELK

MQ/Kafka

Job description

Project 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.

SKILLS

Must have

• 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 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

• 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.