SENIOR SYSTEM ADMIN/DevOps Engineer 5575

Tier4 Group; Quincy (MA); On-site; USD 120,000 - 180,000; Full time

Job summary

Tier4 Group is seeking a Senior System Analyst/DevOps Engineer to join our AWS-based production environment. The role focuses on managing and optimizing a critical management application, combining traditional system administration with modern cloud-native practices.

You will build a Proof of Concept to re-architect the legacy Java/J2EE application for scalability and cost efficiency on AWS, including Lambda, ECS/EKS, and Postgres migration efforts.

Qualifications

• Bachelor's degree or 7+ years of relevant experience.
• Experience in healthcare administration settings is a plus.
• Proven track record in AWS-based system administration and DevOps implementations.

Responsibilities

• Provide system admin/DevOps support for the client application and oversee release activities.
• Install, configure, and maintain RHEL servers in AWS EC2.
• Administer WebLogic/J2EE apps including JDBC sources, pools, and JVM performance.
• Support Oracle RDS with DBA teams for tuning, backup, and recovery.
• Monitor performance, availability, and security using cloud/APM tools.
• Build a POC to transform the legacy app to a scalable, cloud-native AWS environment.
• Automate routine admin tasks using Shell, Python, or WLST.
• Collaborate with development and testing teams to streamline delivery and knowledge sharing.

Skills

AWS Cloud

RHEL Admin

WebLogic/J2EE

Oracle RDS

GitLab CI/CD

Containerization

Networking & Security

Healthcare Compliance

Java/J2EE Knowledge

Education

Bachelor's degree or 7+ years experience

Tools

GitLab

Job description

POSITION SUMMARY:

This position will report to the Technical Manager and will serve as the Senior System Analyst for our clients application. We are seeking a versatile AWS System Administrator/DevOps Engineer to manage, maintain, and optimize our critical Management application environment.

This role requires expertise in traditional system administration (RHEL, WebLogic, Oracle) and modern DevOps practices on AWS. A key responsibility will be building a Proof of Concept (POC) to re-architect and rebuild the legacy application in a scalable, cloud-native AWS environment.

DETAILED LIST OF ROLE AND RESPONSIBILITIES:

• Responsible for providing technology initiatives, support on-going release activities and POC for application transformation as System Admin/DevOps engineer.
• Install, configure, and maintain Red Hat Enterprise Linux (RHEL) servers in AWS cloud environments (EC2 instances).
• Administer and troubleshoot Java/J2EE applications deployed on WebLogic application servers, including configuration of JDBC data sources, connection pools, and JVM performance monitoring.
• Provide system-level support for Oracle RDS, collaborating with DBA teams for performance tuning, backup, and recovery.
• Monitor system performance, availability, and security using tools like Dynatrace, CloudWatch and implement robust troubleshooting procedures for application and infrastructure issues.
• Build a Proof of Concept (POC) for rebuilding the legacy Java/J2EE application using modern AWS services (e.g., Lambda, ECS/EKS, S3), micro services to improve scalability, reliability, and cost-efficiency.
• Automate routine administrative tasks using scripting languages (Shell, Python, Jython, WLST) to increase operational efficiency.
• Work closely with development, testing, and operations teams to bridge the gap between development and operations, ensuring smooth software delivery and knowledge sharing.

SKILLS:

• Proven experience as a System Administrator or DevOps Engineer managing enterprise-level applications.
• Strong expertise in AWS cloud services (EC2, S3, VPC, IAM, CloudWatch, etc.).
• Hands-on experience with Red Hat Enterprise Linux (RHEL) administration.
• Proficiency in administering WebLogic application servers and supporting Java/J2EE applications.
• Install, configure, and maintain Red Hat Enterprise Linux (RHEL) servers in AWS cloud environments (EC2 instances).
• Familiarity with Oracle databases from a system administration perspective.
• Experience with version control systems, specifically GitLab, and CI/CD practices.
• Knowledge of networking concepts and security best practices in cloud environments.
• Experience or familiarity with healthcare data management and compliance standards is a plus.
• Develop POC for migrating code base from WebLogic to JBoss, and ORACLE RDS to Postgres
• Hands on with Containerization
• Collaboration work with development teams to streamline the process.

QUALIFICATIONS: (Experience and Education)

• Bachelor's degree preferred or 7+ years of relevant experience in lieu of a degree is acceptable
• Experience in a healthcare administration setting