L2 Application Support Engineer

Citigroup Inc.; Pune District; On-site; INR 900,000 - 1,200,000; Full time

Job summary

Citigroup Inc. is seeking an L2 Application Support Engineer to provide high-quality technical support, troubleshooting, and incident resolution for complex enterprise applications, bridging L1 monitoring and L3 development teams.

You will ensure service availability, operate within strict SLAs, and collaborate across DBAs, network engineers, and systems admins to restore services quickly and prevent recurrence.

Qualifications

• > Bachelor\'s degree in Computer Science, Information Technology, Engineering, or a related technical discipline.
• "> 5+ years of experience in an application support, technical support, or systems engineering role (enterprise/financial services).
• "> ITIL v3/v4 Foundation certification desirable; certifications in AWS/Azure, Kubernetes, Linux Admin, or Oracle/SQL preferred.

Responsibilities

• Incident & Problem Management: Acknowledge and own incidents escalated by L1 or monitoring alerts.
• Troubleshooting & Diagnosis: Perform in-depth technical analysis and root cause investigations.
• Workaround Implementation: Apply approved temporary workarounds or permanent hotfixes.
• Collaboration: Partner with L3 developers, DBAs, network engineers, and sysadmins to resolve multi-tier issues.
• Incident Lifecycle Management: Track and document incidents in ITSM (e.g., ServiceNow).
• Monitoring & Preventive Maintenance: Monitor health, identify trends, and initiate preventive actions.
• Health Checks: Perform daily health checks, SOD/EOD verifications, batch runs.
• Release & Config Management: Validate deployments, manage config files, and environment consistency.
• Communication & Stakeholder Mgmt: Provide timely updates to stakeholders; participate in bridges/war rooms.
• Documentation & Knowledge Mgmt: Update runbooks, SOPs, architecture maps; train L1 teams.

Skills

Shell scripting

PowerShell

Python

SQL

Middleware

Databases

Docker

Kubernetes

OpenShift

AWS/Azure

Monitoring tools

ServiceNow/Jira

Git

Education

Bachelor's degree in Computer Science/IT/Engineering

Tools

Docker

Kubernetes

OpenShift

AWS/Azure

ServiceNow

Jira

Git

Job description

TheL2 Application Support Engineeris a critical role within the Production Support and Operations team. This individual is responsible for providing high-quality technical support, troubleshooting, and incident resolution for complex enterprise applications and platforms. Acting as the bridge between L1 Helpdesk/Monitoring teams and L3 Development/Engineering groups, the L2 Engineer ensures system availability, stability, and adherence to strict Service Level Agreements (SLAs) in a fast-paced, enterprise technology environment.

Key Responsibilities

1. Incident & Problem Management

• Escalation Handling:Acknowledge and own incidents escalated by the L1 support team or monitoring alerts.
• Troubleshooting & Diagnosis:Perform in-depth technical analysis and root cause investigation of application, database, middleware, and infrastructure failures.
• Workaround Implementation:Apply approved temporary workarounds or permanent hotfixes to restore services quickly and minimize business impact.
• Collaboration:Partner with L3 developers, database administrators (DBAs), network engineers, and system administrators to resolve complex, multi-tiered issues.
• Incident Lifecycle Management:Track and document all incident progression within the ITSM platform (e.g., ServiceNow) from creation through to resolution.

2. Monitoring, Observability & Preventive Maintenance

• System Monitoring:Actively monitor application health, batch jobs, integration feeds, and system performance using enterprise observability suites.
• Proactive Interventions:Identify recurring patterns, error trends, or capacity bottlenecks and initiate preventative actions.
• Health Checks:Perform daily health checks, start-of-day (SOD) and end-of-day (EOD) verifications, and batch processing runs.

3. Release, Deployment & Configuration Management

• Deployment Validation:Support the verification of application deployments, system patches, and infrastructure upgrades during maintenance windows.
• Configuration Controls:Maintain and update application configuration files, environment variables, and parameter settings under strict change management processes.
• Environment Management:Assist in maintaining non-production (UAT/Staging) and production environments to ensure consistency.

4. Communication & Stakeholder Management

• Status Updates:Provide clear, timely, and precise communications to business stakeholders, product owners, and technology leadership during critical (Sev-1/Sev-2) incidents.
• Bridges & War Rooms:Participate in or lead technical incident bridges to coordinate restoration efforts.
• Post-Incident Reviews:Contribute technical inputs to Post-Incident Reviews (PIRs) and Root Cause Analysis (RCA) documentation.

5. Documentation & Knowledge Management

• Runbooks & SOPs:Document and update Standard Operating Procedures (SOPs), application architecture maps, and troubleshooting runbooks.
• Knowledge Sharing:Train L1 teams on common issue resolution paths to shift-left workloads and improve first-contact resolution rates.

Required Technical Skills

• Scripting & Automation - Proficiency in writing and debuggingShell scripting(Bash),PowerShell, orPythonto automate daily tasks and analyze log files.
• Databases & Querying - StrongSQLskills (Oracle, MS SQL, Sybase, or PostgreSQL). Ability to write complex select queries, joins, analyze execution plans, and run database scripts.
• Middleware & Web Servers - Working knowledge ofApache,Tomcat,Nginx,WebSphere,and messaging queues likeIBM MQ,RabbitMQ, orApache Kafka.
• Cloud & Containerization - Familiarity withDocker,Kubernetes,OpenShift, or cloud infrastructure (AWS/Azure) concepts and container deployments.
• Monitoring & Logging - Hands-on experience with tools such asSplunk,ELK Stack,AppDynamics,Dynatrace,Grafana, orITRS Geneos.
• ITSM & Collaboration - Experience with ticketing tools likeServiceNoworJira, and version control systems likeGitor Bitbucket.

Required Professional & Soft Skills

• Analytical Mindset:Excellent logical reasoning and problem-solving skills; ability to systematically break down a complex issue.
• Communication:Exceptional verbal and written communication skills, with the ability to translate technical details into plain language for business teams.
• Pressure Tolerance:Calm demeanor under pressure, especially during high-severity system outages.
• Team Collaboration:Ability to work cohesively in a global, distributed cross-functional environment.

Qualifications & Experience

• Education:Bachelor's degree in Computer Science, Information Technology, Engineering, or a related technical discipline.
• Experience:5+ years of experience in an application support, technical support, or systems engineering role (preferably in an enterprise or financial services environment).
• Certifications (Desirable):
  • ITIL v3 or v4 Foundation certification.
  • Professional certifications in AWS/Azure, Kubernetes (CKAD), Linux Administration, or Oracle/SQL.

Job Family Group:

Technology

Job Family:

Applications Support

Time Type:

Full time

Most Relevant Skills

Please see the requirements listed above.

Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi. View Citi’s EEO Policy Statement and the Know Your Rights poster.