Senior Middleware Administrator

Unisys Corporation; Norwich (CT); On-site; USD 110,000 - 140,000; Full time

Job summary

Unisys Corporation in the United States is seeking a Senior Middleware Administrator to oversee enterprise platforms including WebSphere, WebLogic, and Apache. You will automate maintenance, manage security, and ensure compliance across Linux and Windows servers, while driving efficiencies through scripting and CI/CD support.

The role emphasizes proactive performance tuning, incident restoration, and meticulous documentation to support audit readiness and stable, scalable middleware services for

Qualifications

• 6+ years of middleware administration experience.
• Experience supporting enterprise WebSphere and WebLogic environments.
• Experience in security remediation, vulnerability management, and audit compliance.
• Demonstrated experience developing automation solutions that improve operational efficiency and reduce manual effort.

Responsibilities

• Manage and support IBM WebSphere, IBM HTTP Server, Oracle WebLogic, Apache, Tomcat, IIS, and WebSphere Portal environments.
• Perform security remediation activities, vulnerability management, patching, upgrades, and compliance validation.
• Manage SSL/TLS certificates, keystores, truststores, LDAP, Kerberos, Active Directory integration, SSO, and LTPA security.
• Administer Linux and Windows servers supporting middleware environments.
• Design, develop, and maintain automation solutions for middleware administration, patching, compliance validation, and operational support activities.
• Develop and maintain Shell, Python, and JACL scripts to automate recurring administrative tasks.
• Automate deployments, middleware configuration updates, certificate management processes, reporting, and system health checks.
• Support CI/CD deployment processes and enterprise automation tools where applicable.
• Perform middleware performance monitoring, JVM tuning, troubleshooting, and root cause analysis.
• Execute change management, incident management, and service restoration activities.
• Maintain documentation, procedures, audit evidence, and compliance records.

Skills

Middleware administration

Automation development

Security remediation

Troubleshooting

Documentation and compliance

Education

Bachelor's degree or equivalent experience

Tools

WebSphere Application Server

IBM HTTP Server

WebLogic

Apache

Tomcat

IIS

Linux administration

Windows Server administration

SSL/TLS

LDAP/AD

Kerberos

SSO

SSO

Shell scripting

Python

JACL

XML

HTML

Awk

Sed

Curl

REST API

IBM DB2

Oracle databases

JVM tuning

Job description

What success looks like in this role:

Position Summary

The Senior Middleware Administrator is responsible for the administration, configuration, maintenance, security remediation, compliance management, automation, troubleshooting, and operational support of enterprise middleware platforms and supporting infrastructure. The role focuses on maintaining highly available, secure, and compliant environments while leveraging automation to improve operational efficiency, reduce manual effort, and ensure consistency across middleware services.

Key Responsibilities

• Manage and support IBM WebSphere, IBM HTTP Server, Oracle WebLogic, Apache, Tomcat, IIS, and WebSphere Portal environments.
• Perform security remediation activities, vulnerability management, patching, upgrades, and compliance validation.
• Manage SSL/TLS certificates, keystores, truststores, LDAP, Kerberos, Active Directory integration, SSO, and LTPA security.
• Administer Linux and Windows servers supporting middleware environments.
• Design, develop, and maintain automation solutions for middleware administration, patching, compliance validation, and operational support activities.
• Develop and maintain Shell, Python, and JACL scripts to automate recurring administrative tasks.
• Automate deployments, middleware configuration updates, certificate management processes, reporting, and system health checks.
• Support CI/CD deployment processes and enterprise automation tools where applicable.
• Perform middleware performance monitoring, JVM tuning, troubleshooting, and root cause analysis.
• Execute change management, incident management, and service restoration activities.
• Maintain documentation, procedures, audit evidence, and compliance records.

Required Qualifications

• Bachelor's degree or equivalent experience.
• 6+ years of middleware administration experience.
• Experience supporting enterprise WebSphere and WebLogic environments.
• Experience in security remediation, vulnerability management, and audit compliance.
• Demonstrated experience developing automation solutions that improve operational efficiency and reduce manual effort.

Required Technical Skills

• WebSphere Application Server, IBM HTTP Server, WebLogic, Apache, Tomcat, IIS, WebSphere Portal.
• Linux (RHEL, SUSE, AIX, Solaris) and Windows Server administration.
• SSL/TLS, LDAP, Active Directory, Kerberos, SSO, security hardening.
• Shell Scripting, Python, JACL, XML, HTML, Awk, Sed, Curl.
• Automation, REST API integration, task scheduling, and operational scripting.
• IBM DB2 and Oracle databases.
• JVM tuning, monitoring, and performance analysis.

Preferred Qualifications

• WebSphere Liberty experience.
• Kafka, Zookeeper, Artifactory, WordPress, ServiceNow, or Remedy administration experience.
• Ansible, Jenkins, Git, GitLab CI/CD, or similar automation tools.
• Experience supporting security audits and compliance frameworks.

Key Competencies

• Strong middleware administration and troubleshooting skills.
• Security-focused mindset and operational discipline.
• Strong automation and scripting capabilities.
• Strong documentation and communication skills.
• Ability to manage multiple priorities in production support environments.

You will be successful in this role if you have:

BA/BS degree and 6-8 years' relevant experience OR equivalent combination of education and experience

This role may require access to export-controlled commodities and technology. Therefore, to conform to U.S. export control regulations, applicant should be eligible for any required authorizations from the U.S. Government.

Unisys is proud to be an equal opportunity employer that considers all qualified applicants without regard to age, caste, citizenship, color, disability, family medical history, family status, ethnicity, gender, gender expression, gender identity, genetic information, marital status, national origin, parental status, pregnancy, race, religion, sex, sexual orientation, transgender status, veteran status or any other category protected by law.

This commitment includes our efforts to provide for all those who seek to express interest in employment the opportunity to participate without barriers. If you are a US job seeker unable to review the job opportunities herein, or cannot otherwise complete your expression of interest, without additional assistance and would like to discuss a request for reasonable accommodation, please contact our Global Recruiting organization at [e-mail] or alternatively Toll Free: 888-560-1782 (Prompt 4). US job seekers can find more information about Unisys' EEO commitment here.