Senior Administrator Java

Job description

SRE L2 Engineer (Application Operations – Java / WebSphere / JBoss / Oracle) Job Summary The SRE L2 Engineer is responsible for ensuring the stability, availability, and performance of Java-based enterprise applications running on WebSphere/JBoss and Oracle databases. The role focuses on L2 production support, advanced troubleshooting, and proactive reliability engineering, ensuring adherence to SLOs, operational KPIs, and user experience standards. The engineer acts as a key operational bridge between application development, middleware, and database teams, driving reliability and operational excellence. Key Responsibilities Application Operations & Support • Manage end-to-end application operations for Java-based applications hosted on WebSphere/JBoss • Ensure uptime, performance, and stability of production environments • Perform deployments, environment configuration, and release validation • Maintain seamless application runtime and infrastructure alignment ➡ Application Operations ensures cohesive runtime environments and uninterrupted service delivery Incident & Problem Management • Handle L2 incident troubleshooting for escalated production issues • Own resolution of P1/P2 incidents within defined SLAs • Perform deep-dive RCA for recurring issues and implement preventive fixes • Support on-call rotation and critical incident management Middleware Operations (WebSphere / JBoss) • Administer and support: IBM WebSphere Application Server (WAS) or JBoss (WildFly) • Perform: Application deployments (EAR/WAR files) Server configuration (JVM tuning, thread pools, data source configs) Cluster management and load balancing Log analysis and troubleshooting runtime issues • Monitor and optimise application server performance and health ➡ Java stack in the SRE TOM includes Linux, JBoss/WebSphere, and Oracle-based environments Database Operations (Oracle) • Work on Oracle database operations: Query troubleshooting and performance tuning Monitoring DB performance (locks, waits, execution plans) Supporting deployments involving DB changes • Collaborate with DBA teams for complex performance or availability issues Monitoring & Reliability Engineering • Implement and operate monitoring/observability dashboards (logs, metrics, traces) • Track application health KPIs (availability, latency, error rates, throughput) • Support SLO/SLI adherence and reliability reporting • Contribute to proactive incident elimination and improved MTTR ➡ SRE relies on observability, SLIs/SLOs, and performance metrics for reliability engineering Automation & Continuous Improvement • Develop scripts (Shell/Python/Ansible) to reduce manual operational effort (toil) • Automate deployments, health checks, and recovery procedures\\\\r\\\\n• Identify improvement opportunities and support continuous reliability enhancement Collaboration & Documentation • Collaborate with: Application development teams Middleware and infrastructure teams Database administrators • Maintain: Runbooks, SOPs, and knowledge base articles • Support architecture discussions for performance and reliability improvements Skill Requirements Core Technical Skills • Strong experience in Java / J2EE applications • Hands-on expertise in: IBM WebSphere Application Server (WAS) OR JBoss (WildFly) Oracle Database (SQL, performance tuning, troubleshooting) • Good understanding of: Linux/Unix environments Application deployment and configuration SRE / Operations Skills • Experience in L2 Production Support / Application Operations • Strong knowledge of: Incident, Problem, Change Management (ITIL) Monitoring and observability tools such as Splunk Performance and capacity management • Familiarity with: SLO / SLA / Error Budget concepts Reliability engineering practices Soft Skills • Strong analytical and troubleshooting mindset • Ability to handle high-pressure production incidents • Effective stakeholder communication • Collaborative and proactive approach Other Requirements Experience & Qualifications • 3–6 years of experience in Java Application Support / SRE / Production Support • Bachelor’s degree in Computer Science / IT or related discipline • Experience in enterprise-scale distributed environments preferred Apply now Information at a Glance Why HCLTech? At HCLTech, you'll supercharge your potential. You'll find your career. And you'll find your spark. All at a place that knows that helping its customers stay on top starts by putting its people first. HCLTech is a global technology company, home to more than 223,000 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud and AI, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of 12 months ending June 2026 totaled $14.8 billion. Disclaimer Privacy Statement Terms of use Sitemap Raise a Grievance We use cookies on our site. Please read more about cookies policy here. Opens in a new tab. Opens in a new tab. Opens in a new tab. Opens in a new tab. Opens in a new tab. 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