Senior System Admin / DevOps Engineer

Job Title: Senior System Admin / DevOps Engineer

Location: Massachusetts (Hybrid)

Job Type: Contract (W-2)

Experience: 15+ years

Job Overview:

Our client, a large state government health and human services organization, is seeking a versatile Senior System Administrator / DevOps Engineer to manage, maintain, and optimize a critical Medicaid Management Information System (MMIS) application environment. This role combines traditional system administration with modern cloud-native DevOps practices, including building a Proof of Concept to re-architect a legacy Java/J2EE application on AWS.

Key Responsibilities:

• Install, configure, and maintain Red Hat Enterprise Linux (RHEL) servers on AWS EC2 instances
• Administer and troubleshoot Java/J2EE applications on WebLogic application servers (JDBC, connection pools, JVM tuning)
• Provide system-level support for Oracle RDS in collaboration with DBA teams
• Monitor system performance and availability using Dynatrace and CloudWatch
• Build a POC to rebuild the legacy application using modern AWS services (Lambda, ECS/EKS, S3) and microservices architecture
• Develop POC for migrating codebase from WebLogic to JBoss and Oracle RDS to PostgreSQL
• Automate administrative tasks using Shell, Python, Jython, and WLST scripting
• Collaborate with development, testing, and operations teams to support smooth software delivery

Required Skills:

• AWS cloud services: EC2, S3, VPC, IAM, CloudWatch
• Red Hat Enterprise Linux (RHEL) administration
• WebLogic application server administration and Java/J2EE support
• Oracle RDS (system administration perspective)
• GitLab and CI/CD practices
• Scripting: Shell, Python
• Containerization experience
• Networking concepts and cloud security best practices

Preferred Skills:

• Experience with Dynatrace monitoring
• Familiarity with Jython / WLST
• Healthcare data management and compliance standards
• JBoss and PostgreSQL migration experience

Location & Work Model:

Hybrid — Massachusetts. Maximum 37.5 hours per week, no overtime.

Engagement Details:

W-2 hourly contract. Candidate must be available to start approximately 3 weeks after accepting the offer.