Senior System Administrator

Luma Financial Technologies

$105K — $130K *
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in Computer Science, Information Technology, or equivalent experience.
  • 5-10 years of professional systems administration experience in medium to large enterprises.
  • Advanced expertise in managing Windows and Mac OS environments, including Active Directory and Group Policies.
  • Deep experience with VMware, Hyper-V, AWS, or Microsoft Azure.
  • Strong understanding of networking fundamentals such as TCP/IP, DNS, DHCP, VLANs, and firewalls.
  • Excellent problem-solving skills and ability to communicate technical concepts to non-technical stakeholders.

Responsibilities

  • Plan, test, and implement enterprise-level server, storage, and network configurations.
  • Develop custom scripts in PowerShell, Bash, or Python to automate administrative tasks.
  • Implement routine security patching, manage access controls, and perform vulnerability scanning.
  • Design and maintain data backup schedules and business continuity plans.
  • Monitor infrastructure health and optimize resource allocations for high availability.
  • Serve as the primary escalation point for complex engineering problems and mentor junior team members.
  • Coordinate with vendors for technology evaluation and system migrations.

Benefits

  • Opportunities for professional growth and advancement.
  • Flexible work hours and potential for remote work arrangements.
  • Collaborative and innovative team environment.
  • Access to cutting-edge technology and tools in a thriving industry.
  • Comprehensive health, dental, and vision insurance plans.
Full Job Description
About the role

We are seeking a highly skilled Senior Systems Administrator to join our IT operations team. In this role, you will be responsible for ensuring the stability, security, and scalability of our enterprise technical environments. You will lead infrastructure upgrades, automate routine administrative tasks, and serve as the highest tier of internal technical support. The ideal candidate possesses a deep understanding of system architecture and a strategic mindset to align our technology with broader business goals.

What you'll do

  • Infrastructure Design & Maintenance: Plan, test, and implement enterprise-level server, storage, and network configurations across physical, virtual, and cloud environments.
  • Automation & Scripting: Develop custom scripts using PowerShell, Bash, or Python to automate repetitive administration tasks and maximize system efficiency.
  • Security & Compliance: Implement routine security patching, manage access controls through Active Directory, and perform vulnerability scanning to safeguard infrastructure.
  • Disaster Recovery: Design, test, and maintain robust data backup schedules, retention policies, and business continuity plans to guarantee zero data loss.
  • Performance Optimization: Monitor infrastructure health and fine-tune resource allocations to eliminate system bottlenecks and ensure high availability.
  • Technical Leadership: Serve as the primary escalation point for Tier 2/3 engineering problems while coaching and mentoring junior team members.
  • Vendor & Project Management: Coordinate directly with external hardware, software, and cloud service vendors to evaluate new technologies and manage system migrations.

Qualifications

Required

  • Education: Bachelor's degree in Computer Science, Information Technology, or a related discipline (or equivalent practical experience).
  • Experience: 5-10 years of professional systems administration experience in a medium to large enterprise environments.
  • Operating Systems: Advanced expertise managing and troubleshooting Windows and Mac OS environments, Active Directory, Group Policies, or AWS deployments.
  • Virtualization & Cloud: Deep experience with virtualization platforms like VMware or Hyper-V, alongside cloud environments such as AWS or Microsoft Azure.
  • Networking Fundamentals: Strong grasp of core network infrastructure, including TCP/IP, DNS, DHCP, VLANs, and firewalls.
  • Soft Skills: Excellent root-cause problem-solving capabilities under pressure, alongside the communication skills required to translate technical ideas to non-technical stakeholders.

Preferred

  • Certifications: Microsoft Certified Azure Administrator / AWS Certified SysOps Administrator
  • Platform experience: Microsoft Entra ID, Okta, Rippling and Snowflake
  • Industry Exposure: Prior Exposure to fintech, insurance or broader finance services organizations.


The pay range for this role is:

105,000 - 130,000 USD per year (Cincinnati)

135,000 - 160,000 USD per year (New York)

Similar Jobs

More Jobs at Luma Financial Technologies

More Information Technology Jobs

Find similar Senior System Administrator jobs: