System Administrator II

Lyntris

San Diego (CA)

On-site

USD 110,000 - 140,000

Full time

4 days ago

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Benefits offered by this job

Paid Time Off

Paid Company Holidays

Medical, Dental & Vision Insurance

Optional HSA and FSA

Base and Voluntary Life Insurance

Short Term & Long-Term Disability

401k Matching

Employee Assistance Program

Job summary

Lyntris, a defense technology company, seeks a System Administrator II to support AWS-based infrastructure and security compliance in San Diego, CA. The role entails provisioning cloud services, automation with IaC, and maintaining documentation for large-scale systems.

The candidate should have 2–5 years of system administration experience, hands-on with Linux/Windows, virtualization, and cloud platforms, plus the ability to obtain and maintain required security clearances.

Qualifications

Active U.S. national security clearance or ability to obtain one (facilitated through the company on hire).
CompTIA Security+ certification (or able to secure upon hire).
2–5 years of system administration experience across Linux (RHEL, CentOS) and Windows Server OS (2020/2022).
Experience with virtualization (VMware, VirtualBox, Hyper-V) and cloud infra (AWS, Azure).
Knowledge of Information Assurance (STIGs, ACAS, ENS/HBSS) and scripting (Bash, Python, PowerShell).
Experience enabling user support and documenting technical work.

Responsibilities

Provision, configure, and sustain AWS services (EC2, S3, VPC, Event Bridge).
Monitor assets within AWS VPC using appropriate tools.
Develop and execute Infrastructure as Code (IaC) with Ansible Playbooks.
Create and maintain clear system documentation and configurations.
Run baseline Build Test Frameworks to validate environments and performance.
Maintain patches and OS compliance per STIG guidance.
Scan systems and remediate vulnerabilities with ACAS.
Administer Windows and Linux workstations and servers; provide analytics support.
Guide and coordinate issue resolution for complex problems.
Assist developers and operations with CI/CD, automation, and deployment workflows.
Perform server administration tasks: users, permissions, group policies, event logs, monitoring, and integration across components.

Skills

Security clearance eligibility

Automation and scripting

Documentation

User support

Tools

VMware

AWS

Azure

Ansible

Terraform

Bash

Python

PowerShell

ACAS

STIGs

Docker

Kubernetes

OpenShift

OpenAM

Keycloak

Job description

Lyntris is a defense technology company that connects sensing to action across the connected battlespace. Lyntris brings together the talents of Accelint and Vitesse teams under one mission, with each contributing deep expertise within their domain. Combining differentiated hardware, software and mission expertise, Lyntris helps customers sense threats, make sense of complex conditions and act with greater speed, precision and confidence in contested environments.

Lyntris supports U.S. and allied defense organizations across every branch — including Navy, Army, Air Force, Space Force and allied partners — spanning strategic, operational and tactical missions and every domain: Space, Air, Land, Sea and Cyber. With more than 200 active defense programs, Lyntris works at every level of the mission, from national command authority to the tactical edge.

Solutions are designed by operators who understand the mission, engineered for the conditions that degrade or defeat standard systems, and built on an open, modular architecture that integrates into existing programs without requiring them to start over. Lyntris moves faster than the traditional defense cycle — with integrated design, build and test capabilities in-house — and delivers systems that sustain and endure long after initial fielding.

Job Description

System Administrator II
Full time
Onsite

Duties And Responsibilities

Responsible for provisioning, configuring, and sustaining AWS services such as but not limited to EC2, S3, VPC, and AWS Event Bridge.
Utilizing resource monitoring tools to manage and report on assets within AWS VPC.
Experience developing and executing Infrastructure as Code (IaC), primarily using Ansible Playbooks
Create and maintain clear, concise, and comprehensive documentation for technical work performed, including system configurations, troubleshooting steps, and project implementations
Execute baseline BTFs (Build Test Frameworks) to validate environmental functionality and ensure system performance aligns with specified requirements
Maintain system patches, as well as operating system, in accordance with Security Technical Implementation Guide (STIG) compliance.
Scan systems and assist the team in remediating vulnerabilities using ACAS.
Administrate, monitor, troubleshoot, and maintain Window or Linux-based workstations, enterprise IT servers, systems software requirements, and analytical support.
Provide guidance, assistance, coordination, and follow-up on complex problems and ensure resolution.
Familiar with automated deployment and CI/CD workflows to assist with application developers and operations to support production applications.
Perform server administration tasks, including user/group administration, security permissions, group policies, research event log warnings and errors, resource monitoring and resolution, while ensuring system architecture components work together seamlessly.

Required Qualifications

Currently holds an active U.S. national security clearance OR can obtain one (process is facilitated through the company upon hire; to learn more about the security clearance process, please access this link).
CompTIA Security+ Certified (or able to secure certification upon hire)
2-5 years system administration experience related to:
- Linux operating systems (i.e., RHEL, CentOS)
- Windows Server Operating Systems (i.e., 2020, 2022)
- Virtual machines (i.e., VMware, VirtualBox, Hyper-V)
- Cloud computing infrastructure (i.e., Amazon AWS, Microsoft Azure)
- Information Assurance Compliance (i.e., STIGs, ACAS, ENS/HBSS)
- Automation and Scripting (i.e., Bash, Python, PowerShell, etc.)
Experience with providing user support

Preferred Qualifications

Cloud Certification (i.e., CompTIA Cloud +, ISC2 CCSP, VMWare Cloud Service Solutions)
Containerization (i.e., Docker, Kubernetes, OpenShift)
Infrastructure-as-Code (i.e., Ansible, Terraform, CloudFormation)
Identity management administration (i.e., Active Directory, AWS IAM, OpenAM, Keycloak)
Cloud infrastructure management tools (i.e., AWS Systems Manager, Azure Monitor)

Clearance Requirements

Some positions will require access to U.S. National Security information. Positions that require this access will be required to receive and maintain a U.S. government personnel security clearance (PCL). In order to qualify for this position, the candidate must be a US Citizen and either currently possess this National Security eligibility or be able to complete the investigation application process with a favorable determination and maintain that eligibility throughout their employment. To learn more about the security clearance process please access this link.

EEOC & Know Your Rights

Lyntris companies are Equal Opportunity Employers. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, disability, status as a protected veteran or any other status protected by applicable federal, state, and local law. We ensure that all employment decisions, including hiring, promotion, compensation, and other terms and conditions of employment, are based on merit, qualifications, and business needs. For more information about your rights, please review the "Know Your Rights" poster from the Equal Employment Opportunity Commission (EEOC). Know your Rights: English Spanish

Pay Scales & Benefits

The listed pay scale reflects the broad, minimum to maximum, pay scale for this position for the location for which it has been posted and is not a guarantee of compensation or salary. Other compensation considerations may include, but are not limited to, job responsibilities, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, or other applicable factors.

Benefits include…