Fresenius Medical Care · 21 hours ago
Sr Enterprise Sys Engineer - UNIX/AIX
Lexington, MA
Full-time
Onsite
Mid, Senior Level
$94K/yr - $158K/yr
5+ years expFresenius Medical Care is seeking a Senior Enterprise Systems Engineer specializing in UNIX/AIX. The role involves the design, implementation, and support of IBM Power Systems environments, requiring deep expertise in AIX and related infrastructure components to ensure system performance and availability.
BiotechnologyHealth CareMedical Device
Responsibilities
Administer, configure, and maintain IBM Power Systems
Administer, configure and maintain HPUX servers
Manage and support AIX 7.2 and 7.3 operating systems, including patching, tuning, and troubleshooting
Perform installation, configuration, and maintenance of AIX servers through NIM (Network Installation Manager)
Design and configure PowerVM virtualization services including SEA, VLANs, VLAN tagging, IVE, NPIV, CPU pooling, and Live Partition Mobility (LPM)
Configure and manage VIOS (v3+) and HMC (v10+) consoles, ensuring proper resource allocation and firmware updates
Perform microcode, firmware, and operating system upgrades for AIX, VIOS, and Power hardware
Manage Logical Volume Manager (LVM) configuration and administration for optimal storage performance and reliability
Implement and maintain SAN storage connectivity (Dell/EMC PowerPath, PowerMax, PowerStore) and ensure high availability
Configure and support Veritas InfoScale Clustering for critical workloads
Develop and maintain shell scripts to automate administrative tasks and improve operational efficiency
Participate in AIX support activities, including troubleshooting, incident resolution, and performance tuning
Lead or support data center migration projects involving AIX and Power Systems
Collaborate with storage, network, and application teams to ensure end-to-end infrastructure stability and performance
Maintain detailed system documentation, including architecture, configurations, and operational procedures
Qualification
Required
Bachelor's Degree required; Advanced Degree desirable
5+ years of hands-on experience administering IBM AIX systems in enterprise environments
3+ years of hands-on experience administering HPUX systems in enterprise environments
Strong proficiency with IBM Power hardware (Power9+), AIX 7.2/7.3, VIOS, and PowerVM
Demonstrated experience with LPAR virtualization design and management
Expertise with NIM setup, configuration, and patch management
Deep understanding of HMC operations and LPM migrations
Experience with SAN technologies and EMC/Dell PowerPath, PowerMax, and PowerStore integration
Working knowledge of Veritas InfoScale Cluster configuration and support
Proficient in shell scripting for system automation and monitoring
Strong troubleshooting and performance analysis skills
Excellent documentation, communication, and teamwork skills
Preferred
IBM Certified System Administrator – AIX or equivalent certification
Experience with hybrid data center or cloud migration projects
Knowledge of security hardening and compliance best practices for AIX and HPUX environments
Familiarity with modern DevOps and automation tools (e.g., Ansible, PowerVC, etc.)
Benefits
Medical, dental, and vision insurance
A 401(k) with company match
Paid time off
Parental leave
Company
Fresenius Medical Care
Fresenius Medical Care is a healthcare company that provides dialysis treatment for those with chronic kidney diseases.
10001+ employees
H1B Sponsorship
Fresenius Medical Care has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (2)
2024 (5)
2023 (14)
2022 (18)
2021 (10)
2020 (20)
Funding
Current Stage
Public CompanyTotal Funding
$758.43M2025-11-17Post Ipo Debt· $579.5M
2025-07-21Post Ipo Equity· $4.86M
2020-02-25Post Ipo Equity· $6.07M
Leadership Team
Helen Giza
Chief Executive Officer and Chair of the Management Board
Olaf Schermeier
Member of the Management Board - CEO Global R&D
Recent News
2025-11-19
2025-11-11
Company data provided by crunchbase