UNIX/Linux Sr. Systems Administrator (Projects)

Unisys•East Hartford, CT

19h

About The Position

Position Title Senior Systems Engineer – Linux (Project Implementation) Position Summary We are seeking a Senior Systems Engineer with deep expertise in UNIX, and Linux platforms to lead and deliver infrastructure and platform implementation projects supporting mission-critical environments. This role is heavily focused on design, build, migration, modernization, and integration initiatives, rather than day-to-day operations. The ideal candidate will have a strong background in deploying enterprise systems, leading technical implementations, and driving infrastructure transformation efforts, particularly in hybrid UNIX/Linux ecosystems.

Requirements

BA/BS degree and 6-8 years’ relevant experience OR equivalent combination of education and experience
Extensive hands-on experience with UNIX environments, with a strong focus on system build and deployment activities
Proven experience delivering infrastructure or platform implementation projects in enterprise environments
Strong expertise in Linux (RHEL, CentOS, or equivalent) in build, migration, and integration scenarios
Experience with application server deployment and configuration (e.g., WebSphere, WebLogic)
Demonstrated ability to execute system migrations, upgrades, and large-scale rollouts
Experience with automation and Infrastructure as Code practices (Ansible, shell scripting, or similar)
Solid understanding of system performance tuning, validation, and troubleshooting during project delivery
Familiarity with enterprise security standards and implementation of hardened builds
Experience working in regulated or highly controlled enterprise environments
Knowledge of virtualization platforms (e.g., VMware) and enterprise storage solutions

Nice To Haves

Experience with IBM Power Systems and AIX-specific project implementations
Exposure to cloud or hybrid infrastructure deployments (Azure, AWS)
Familiarity with CI/CD pipelines and DevOps practices
Experience in data center migrations or workload relocations
Knowledge of ITIL change and release management processes

Responsibilities

Lead and execute end-to-end infrastructure implementations, including system builds, migrations, upgrades, and decommissioning activities
Design and deploy UNIX and Linux environments aligned with enterprise architecture standards
Drive platform modernization initiatives, including OS upgrades, consolidation, and automation adoption
Implement and integrate application server platforms (e.g., WebSphere, WebLogic) within high-availability architectures
Perform environment build-outs for new applications, ensuring scalability, resilience, and performance requirements are met
Collaborate with cross-functional teams (application, network, storage, security) to support project delivery and system integration
Develop and execute deployment plans, runbooks, and cutover strategies for production releases
Automate system provisioning and configuration using Ansible, shell scripting, or similar tools
Conduct performance validation, tuning, and capacity planning during and after implementation
Implement security controls, system hardening, and compliance requirements as part of build processes
Support data center migrations, cloud/hybrid transitions, and platform transformations
Produce and maintain engineering documentation, including build standards, architecture diagrams, and implementation guides
Provide post-implementation knowledge transfer to operations teams and limited escalation support