About Us
Ensono is an expert technology adviser and managed service provider. As a relentless ally, we accelerate clients’ digital transformation to achieve business outcomes that stand to last. Our dedicated team helps organizations optimize today’s systems across any hybrid environment with services such as consulting, mainframe and application modernization, public cloud migration and cloud-native development. With certified experts in AWS, Azure and Google Cloud and recognized as Microsoft Datacenter Transformation Partner of the Year, Ensono has over 3500+ associates globally and is headquartered in greater Chicago.
We care about your success, offering comprehensive strategic and managed services for mission-critical applications. Our Advisory and Consulting services can help upfront with an application strategy or find the right places for your applications – whether it’s public, multi or hybrid cloud, or mainframe. And because we span across all mission-critical platforms, we can meet you wherever you are in your digital transformation journey, with 24/7 support when you need it. We are your relentless ally, flexing with you when challenges emerge so you don’t feel stuck in place. With cross-platform certifications and decades of experience, our technology experts have become an extension of your team so you’re continuously innovating – doing more with less while remaining secure. And that’s just the beginning.
Role Summary
The L2 ARO Engineer provides advanced application support, focusing on Java and .Net based troubleshooting, incident resolution, RCA, change support, and reliability improvements. The role serves as the primary escalation point for L1, partnering with development, infrastructure, and middleware teams to ensure availability, performance, and operational excellence.
Key Responsibilities
Incident & Problem Management
- Own end‑to‑end resolution of incidents escalated from L1.
- Perform deep troubleshooting of Java applications, logs, JVM parameters, and platform components.
- Actively participate in or lead Major Incident (MI) bridges.
- Perform RCA and implement permanent fixes.
- Identify recurring issues, trends, and preventive actions.
Change, Release & Operational Readiness
- Review and support production changes related to applications/middleware.
- Perform post‑change validation and production checkouts.
- Highlight risks related to Java versions, certificates, dependencies, and configurations.
- Ensure applications meet availability, performance, and resilience targets.
Monitoring, Automation & Maintenance
- Monitor application health, performance metrics, and system behavior.
- Develop and enhance automation scripts (Shell/Python/PowerShell) for health checks, validations, and repetitive tasks.
- Improve monitoring dashboards, alerts, and observability coverage.
- Maintain and update runbooks, SOPs, and KB articles.
Collaboration & Stakeholder Communication
- Work closely with Dev (L3/L4), Infrastructure, DB, Middleware, and Security teams.
- Serve as the primary operational contact for assigned applications.
- Provide clear technical updates during incidents and changes.
Skills & Qualifications
Technical Skills
- Strong Java and .Net fundamentals and troubleshooting.
- Strong Unix/Linux and networking skills.
- Scripting (Shell/Python/PowerShell) – development & optimization.
- Experience with observability tools: Splunk, Grafana, AppDynamics, ELK.
- Solid understanding of ITSM processes (Incident, Problem, Change).
- Experience in RCA, DR validation, and resilience operations.
Soft Skills
- Strong analytical and problem-solving capabilities.
- Ownership mindset and ability to handle high pressure issues.
- Clear communication with stakeholders at all levels.
Experience & Education
- 3–6 years in application support, production operations, or ARO.
- Bachelor’s degree in engineering, Computer Science, or equivalent.
Working Conditions
- Rotational shifts including nights/weekends/holidays.
- Fast-paced environment with multiple priorities.
- Hybrid working model
"We are an equal opportunity employer. All qualified applicants will be considered for employment without regard to caste, color, creed, religion, gender, gender identity, sexual orientation, age, disability, HIV status, or any other status protected by law. Candidates with disabilities who require accommodation during the recruitment process are encouraged to contact our Talent Acquisition team to place a request."
_0.png)
