Senior Application Support Engineer

Insight Global; United States; On-site; USD 90,000 - 120,000; Full time

Job summary

A leading technical services company is seeking a skilled application support engineer to provide Level 2 and Level 3 support for mission-critical systems. Candidates should have 7+ years of experience, strong proficiency in Python, and a solid understanding of distributed systems and Linux/Unix. Responsibilities include diagnosing application issues, developing automation tools, and monitoring system health. Excellent communication skills and the ability to work under pressure are crucial.

Qualifications

• 7+ years of experience in Application Support, Production Support, or Site Reliability Engineering.
• Strong proficiency in Python, including scripting, debugging, and building support tooling.
• Experience supporting distributed systems, APIs, or microservices in a production environment.

Responsibilities

• Provide Level 2 and Level 3 application support for mission-critical systems in a production environment.
• Diagnose and resolve complex application issues using Python, logs, metrics, and debugging tools.
• Develop and maintain Python scripts and tools for automation, monitoring, data analysis, and operational efficiency.

Skills

Application Support

Production Support

Site Reliability Engineering

Python

Distributed Systems

APIs

Microservices

Linux/Unix

Database Management

Troubleshooting

Communication

Job description

• US Citizen eligible to obtain a Clearance. Do not need clearance to start
• 7+ years of experience in Application Support, Production Support, or Site Reliability Engineering
• Strong proficiency in Python, including scripting, debugging, and building support tooling
• Experience supporting distributed systems, APIs, or microservices in a production environment
• Solid understanding of Linux/Unix systems, processes, and networking fundamentals
• Hands-on experience with log analysis, monitoring, and alerting tools
• Strong troubleshooting skills with the ability to analyze complex technical issues under pressure
• Experience working with databases (SQL and/or NoSQL)
• Excellent communication skills and the ability to work cross-functionally

Key Responsibilities

• Provide Level 2 and Level 3 application support for mission-critical systems in a production environment
• Diagnose and resolve complex application issues using Python, logs, metrics, and debugging tools
• Develop and maintain Python scripts and tools for automation, monitoring, data analysis, and operational efficiency
• Perform root cause analysis (RCA) and implement long-term fixes to prevent recurring incidents
• Monitor application health, performance, and availability using observability and alerting tools
• Collaborate with software engineers to support releases, deployments, and post-deployment validation
• Participate in on-call rotations and incident response efforts as needed
• Create and maintain clear documentation, runbooks, and support procedures
• Identify and recommend improvements to system architecture, support processes, and tooling
• Serve as a mentor to junior support engineers and contribute to team best practices