Senior Systems Application Engineer

Marsh McLennan - Louisville, KY

Full-time - Mid Level

Louisville, KY

10,001+ employees

Insurance Carriers and Related Activities

About the position

We are seeking a highly skilled, motivated System Engineer to join our dynamic team. This role can be located in the Louisville Kentucky area or out of one of the other offices in the US. In this role, you will be responsible for providing engineering support for both internal and client-facing web applications running on Solaris, Oracle Linux, and Windows operating systems. You will collaborate with international teams, including Solaris and Linux Server Administration, Cyber Security, and Network teams. Additionally, you will work on Production system issues, participate in troubleshooting, security vulnerability management, patching, and ensure application availability, reliability, and stability. As a Senior Systems Application Engineer, you will participate in application operations management in Linux systems, running UNIX commands to administrate PROD and non-PROD application environments. You will provide Tier III administrative support per Operations and project needs; investigate and troubleshoot Production issues. Your responsibilities will include planning and performing major version upgrades of Application Servers such as Tomcat and Apache Web Server, following change control processes to support application releases, and remediating application and software-related security vulnerabilities. You will analyze and fine-tune server parameters for achieving better application performance and support operational excellence by identifying ongoing operational issues, conducting root-cause analyses on Severity 1 system outages, and identifying relevant remediation plans to strategically address them. You will also create and maintain technical documents such as knowledge base articles, infrastructure diagrams, and FAQs. Routine housekeeping and health monitoring will be part of your duties, along with writing Linux/UNIX Shell Scripts for monitoring, recycling, and automating tasks. You will support and resolve issues like application recycles, disk space issues, process hung, port conflict, logs archiving, and SSL certificate expiry. The candidate must be flexible in terms of working hours due to the nature of the role providing 24X5 weekdays support and weekend On-Call support on a rotational basis. Willingness to work on weekends to support application releases and maintenance is required.

Responsibilities

• Provide engineering support for internal and client-facing web applications running on Solaris, Oracle Linux, and Windows operating systems.
• Collaborate with international teams including Solaris and Linux Server Administration, Cyber Security, and Network teams.
• Participate in troubleshooting, security vulnerability management, patching, and ensure application availability, reliability, and stability.
• Administer PROD and non-PROD application environments using UNIX commands.
• Provide Tier III administrative support per Operations and project needs; investigate and troubleshoot Production issues.
• Plan and perform major version upgrades of Application Servers such as Tomcat and Apache Web Server.
• Follow change control processes to support application releases.
• Remediate application and software-related security vulnerabilities.
• Analyze and fine-tune server parameters for better application performance.
• Support operational excellence by identifying ongoing operational issues and conducting root-cause analyses on Severity 1 system outages.
• Create and maintain technical documents such as knowledge base articles, infrastructure diagrams, and FAQs.
• Perform routine housekeeping and health monitoring.
• Write Linux/UNIX Shell Scripts for monitoring, recycling, and automating tasks.
• Support and resolve issues like application recycles, disk space issues, process hung, port conflict, logs archiving, and SSL certificate expiry.

Requirements

• Minimum 5 years of hands-on experience in administering Oracle Linux systems in a corporate environment.
• Working experience in public cloud AWS console management.
• Solid understanding of Windows servers.
• Good understanding of 3 tier or high availability application architecture.
• Good understanding of network topology.
• Sound knowledge of F5 Load Balancer, Firewalls, DNS, etc.
• Knowledge of WebLogic and other related Web/App Servers.
• Task-oriented with strong ability to multi-task and provide status updates using ticketing systems such as ServiceNow.
• Strong verbal and written communication skills to work effectively with international teams.

Nice-to-haves

• Experience with incident management and change management tools like ServiceNow.
• Experience working in AWS hosting enterprise applications; Azure is also a plus.
• Experience working in a global enterprise environment.
• Documentation experience on application architecture of production environment.
• Experience with application and server monitoring tools such as AlertSite and App Dynamics.
• Understanding of security vulnerabilities of web-based applications and their remediation techniques.

Benefits

• Competitive pay (salary and bonus potential)
• Full benefits package starting day one (medical, dental, vision, STD/LTD, life insurance)
• Retirement Savings Plan (RSP) or Tax-Free Savings Account (TFSA)
• Tuition Reimbursement plan
• Participation in Employee Stock Purchase Plan
• Entitled to vacation, floating holidays, time off to give back to the community, sick days, and national holidays (with early dismissal)