Software Integration Engineer 3 (Containerization) with Security Clearance

Cornerstone Defense; Annapolis (MD); On-site; USD 190,000 - 210,000; Full time

Benefits offered by this job

Medical, Dental and Vision Plans

Generous PTO Policy

401(k)

HSA and FSA options

Life and Disability Insurance

Tuition Reimbursement and Training

Perks at Work Discount Program

Referral Program

Leads Generation Program

CollegeAmerica 529

Fitness Reimbursement Program

Travel Assistance

Norton Lifelock Benefit Solutions

Life Planning Financial & Legal

Job summary

Cornerstone Defense is seeking a Software Integration Engineer III to install, configure, and maintain a large-scale on‑prem Kubernetes cluster powering mission-critical apps. You will partner with DevOps, Security, and application teams to drive automation and best practices across tenants.

The role requires extensive experience in Linux, scripting, Kubernetes, Docker, and IaC tooling, with a focus on reliability, performance, and security in a defense/comms environment.

Qualifications

• Bachelor's degree in CS or related field with strong Linux background.
• 8+ years for senior level with relevant systems integration experience.
• Experience integrating, installing, configuring, upgrading software in heterogeneous environments.

Responsibilities

• Install, configure, maintain, and troubleshoot a large on‑prem Kubernetes cluster.
• Collaborate with DevOps, Security, and App teams to implement automation and best practices.
• Support integration of new services within Kubernetes and ensure reliability and security.
• Manage IaC and automation tools such as Helm and Ansible, monitor performance with Prometheus/Grafana.

Skills

Linux CLI

Bash/Python

Kubernetes troubleshooting

CI/CD pipelines

Git & collaboration

Jira/Confluence

Education

Bachelor's Degree in Computer Science or related field

Master's Degree substitute 2 years experience

Tools

Docker

Kubernetes

Helm

Ansible

Prometheus Grafana

Job description

Title: Software Integration Engineer 3 Location: Annapolis Junction, MD Compensation Range: $190 -$210K

• Clearance:


• Active TS/SCI w/ Polygraph needed to apply


• Company Overview: Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation's toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don't look any further than Cornerstone Defense. Benefits Overview: Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans


• Generous PTO Policy


• 401(k)


• HSA and FSA options


• Life and Disability Insurance


• Tuition Reimbursement and Training


• Perks at Work Discount Program


• Referral Program


• Leads Generation Program


• CollegeAmerica 529


• Fitness Reimbursement Program


• Travel Assistance


• Norton Lifelock Benefit Solutions


• Life Planning Financial & Legal Services


• Position Description: The Software Integration Engineer shall be responsible for the installation, configuration, maintenance, and troubleshooting of a large-scale multi-tenant Kubernetes "on-prem" cluster which serves as the foundation for mission-critical applications across multiple tenants. In this role, the Software Integration Engineer shall collaborate closely with DevOps, Security, and Application teams to implement automation, enforce best practices, and support integration of new services within the Kubernetes cluster ensuring the reliability, performance, and security of the Kubernetes-based infrastructure.


• Qualifications : Bachelors Degree in Computer Science or related field and have at least eight (8) years of demonstrable experience with integrating, installing, configuring, upgrading, compiling, and supporting COTS/GOTS software in a heterogeneous operating system environment. OR The individual shall have five (5) years full time Computer Science directly related work that can be substituted for a degree and have at least eight (8) years of demonstrable experience. OR An industry recognized professional certification, as defined in the TT0s, may substitute as one (1) year experience. A Masters Degree in Computer Science or related field may substitute for two (2) years experience.


• Position Required Skills:


• Experience with Linux CLI


• Experience writing scripts using Bash/Python


• Experience troubleshooting and resolving issues related to Kubernetes workloads, networking, ingress, storage, and performance


• Experience with containerization technologies such as Docker


• Demonstrated experience administrating/monitoring Kubernetes clusters


• Experience with IaC (Infrastructure as Code) principles and automation infrastructure provisioning and configuration using tools such as Helm and Ansible


• Demonstrated experience using system monitoring tools such as Prometheus/Grafana


• Experience with Git for source code management, branching strategies, and team collaboration


• Position Desired Skills:


• Experience with the Atlassian Tool Suite (JIRA, Confluence)


• Experience designing, implementing, and managing continuous integration and continuous deployment (CI/CD) pipelines


• CKA (Certified Kubernetes Administrator)