Linux Systems Administrator

LegalSight; Ocean City (NJ); On-site; USD 90,000 - 130,000; Full time

Job summary

LegalSight is seeking a hands-on Linux Systems Administrator to own and optimize our Ubuntu-based infrastructure, including virtualization, cloud footprint, and network edge. You will read logs, write Bash/Python scripts, document configurations, and push toward automation and monitoring to keep systems secure and reliable.

In the first months you’ll own Linux and virtualization, migrate from SonicWall to OPNsense, and implement monitoring and backup processes.

Qualifications

• 3+ years of hands-on Linux administration in a production environment.
• Willingness to take ownership and follow through without being chased.
• Solid scripting for automation (Bash required, Python or similar strong plus).
• Working knowledge of virtualization: Proxmox is ideal, but KVM/hypervisor experience translates.
• Sound networking fundamentals: firewalls, VPNs, DNS, routing.

Responsibilities

• Administer and maintain Linux servers (Ubuntu): provisioning, patching, hardening, storage, users/permissions, troubleshooting.
• Manage Proxmox virtualization: VMs and containers, resources, snapshots, backups, cluster health.
• Own the network edge and firewall: migrate from SonicWall to OPNsense, manage firewall rules, VPN, DNS, routing.
• Automate repetitive tasks with Bash/Python scripts and leverage AI tooling for scripting/automation.
• Set up and maintain monitoring, alerting, logging, and backups/restores.
• Support Docker container hosts, deployment targets, and databases used by engineers.
• Operate and maintain AWS footprint: EC2, RDS, S3, IAM, VPC, with cost/security considerations.
• Respond to incidents, diagnose root causes, implement durable fixes.
• Document configurations and procedures for maintainability.

Skills

Linux administration

Bash scripting

Python scripting

Networking fundamentals

Cloud AWS

Proxmox virtualization

Docker

Documentation

Tools

Proxmox

Docker

AWS

OPNsense

pfSense

Job description

LegalSight is a creative and innovative company that develops software for a broad range of legal and business functions. Our team includes veterans of the legal services industry, technology experts, and business operations professionals. We leverage our expertise to maximize opportunities for improved workflows and processes. We bring together our talent and technology to help clients achieve greater operational efficiency, reduce risks, and take advantage of innovative software solutions.

We're looking for a hands-on Linux Systems Administrator who likes getting into the guts of a system and making it perform optimally. The candidate must take ownership of the infrastructure and keep it healthy and secure.You'll manage our Linux servers, virtualization, cloud footprint, and network edge, and you'll have plenty of latitude to shape how it all fits together.

We expect strong Linux fundamentals, a genuine curiosity about how systems work, and the drive to grow into the unfamiliar parts. We need someone who is comfortable reading logs, scripting fixes, and documenting their work.

In your first few months you'll take ownership of the Linux and virtualization environment, help move us off SonicWall onto OPNsense cleanly, and put automation and monitoring in place so the infrastructure runs quietly and predictably. Over time you'll grow into the broader systems role we need, steadily making the environment more secure and more automated.

**Candidates must live within commutable distance to our office in Ocean City, NJ and must be able to work in-office two (2) days per week.**

Responsibilities:

• Administer and maintain Linux servers (Ubuntu): provisioning, patching, hardening, storage, users/permissions, and day-to-day troubleshooting.
• Manage our Proxmox virtualization environment: VMs and containers, resource allocation, snapshots, backups, and keeping the cluster healthy.
• Own the network edge and firewall: we currently run SonicWall and are transitioning to OPNsense, so you'll help drive that migration and then run it (firewall rules, VPN, DNS, and routing).
• Automate the repetitive stuff: write Bash/Python scripts so routine admin work, provisioning, and monitoring run themselves instead of consuming your day. We leverage AI tooling (including Claude) day-to-day, and you're welcome to use it here too.
• Set up and maintain monitoring, alerting, logging, and backups/restores.
• Support the infrastructure our engineering team builds upon: Docker container hosts, deployment targets, and databases.
• Operate and maintain our AWS footprint: EC2, RDS, S3, IAM, and VPC networking, all while maintaining an eye on cost, security, and reliability.
• Respond to incidents, dig into root causes, and put fixes in place that keep problems from recurring.
• Document configurations and procedures so the environment is maintainable by more than just you.

Required Qualifications:

• 3+ years of hands-on Linux administration in a production environment. Must be comfortable at the command line, networking, storage, and package management.
• A doer's mindset. You'd rather fix the thing and script it than file a ticket and wait. You must be willing to take ownership and follow through without being chased.
• Solid scripting for automation (Bash required, Python or similar a strong plus).
• Working knowledge of virtualization: Proxmox specifically is ideal, but solid KVM/hypervisor experience translates.
• Sound networking fundamentals: firewalls, VPNs, VLANs, DNS, and routing. Must know enough to run and troubleshoot the network edge.
• Some AWS exposure (EC2, RDS, S3, IAM, VPC) and must be clearly capable of ramping quickly on the unknown components.
• Curiosity and the drive to grow into the areas of the stack you haven't mastered yet.
• Clear written communication and a habit of documenting what you build.

Preferred/Nice-to-Have Qualifications:

• Hands-on Proxmox experience specifically (clustering, backups, ZFS/Ceph storage).
• OPNsense or pfSense firewall experience (bonus if you've run a SonicWall-to-OPNsense-style migration before).
• Experience configuring network switches with MLAG, preferably using MikroTik devices.
• Docker experience and comfortable creating highly-integrated container stacks.
• PostgreSQL or general database operations experience.
• Experience with AI tooling (e.g., Claude) for scripting, troubleshooting, or automation (we use it here, so hands-on experience is a plus).
• Relevant certifications (e.g., LPIC, RHCSA, or AWS SysOps/Solutions Architect).