About Castelion

Castelion is bringing a new approach to defense development and production: one that focuses on short, iterative design cycles, rapid testing in development, and modern commercial manufacturing strategies for production at scale. Were designing, building, and testing next generation long range strike weapons systems to give America and its Allies a definitive edge and deter future conflicts.

DevOps Engineer

Castelion is seeking a DevOps Engineer to design, implement, and maintain automated infrastructure, CI/CD pipelines, and cloud-based deployments. The ideal candidate has a strong background in Linux administration, scripting, containerization, and infrastructure automation, along with experience managing Azure cloud services and improving system reliability.

Responsibilities

• Infrastructure & Cloud Management: Deploy, manage, and optimize cloud-based services using Azure

• CI/CD & Version Control: Build and manage CI/CD pipelines using Jenkins, GitHub Actions, and Git, ensuring smooth deployments across development, staging, and production environments

• Containerization & Orchestration: Design, implement, and troubleshoot Docker and Kubernetes based deployments

• Monitoring & Data Analysis: Implement and maintain monitoring and data analysis solutions using Grafana and Foxglove

• Security & Compliance: Enforce security best practices, manage access controls, and ensure compliance with industry standards

• Artifact & Dependency Management: Maintain Nexus binary repository and manage build dependencies using Conan, Cargo, and Pypi

• Collaboration & Troubleshooting: Work with development and operations teams to identify, troubleshoot, and resolve issues in production and development environments

Basic Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or a related field

• 4+ years of experience in DevOps, infrastructure automation, or cloud engineering

• Expertise in Linux server administration

• Proficiency in scripting languages (e.g., Bash, Python, Shell Scripting)

• Strong experience with Git and GitHub workflows

• Hands-on experience with CI/CD tools (e.g., Jenkins, GitHub Actions)

• Deep understanding of containerization and orchestration (Docker, Kubernetes, etc.)

• Experience with Azure cloud services

• Ability to diagnose and troubleshoot networking, performance, and deployment issues in production environments

Leadership Qualities

• Bias to Action and Creative Problem Solving. Desire and experience questioning assumptions in ways that lead to break through ideas that are ultimately implemented. Successfully bring in applicable processes/concepts/materials from other industries to achieve efficiency gains. Ability to personally resolve minor issues in development without requiring significant support.
• High Commitment, High Initiative. A successful candidate will have a genuine passion for Castelion's mission and consistently look for ways to contribute to the company's technical goals and prevent hardware blockers. Ability to work in a fast paced, autonomously driven, and demanding atmosphere. Strong sense of accountability and integrity.
• Clear Communicator. Proactively communicates blockers. Trusted in previous roles to be voice of company with regulators, suppliers, gate keepers and customers. Capable of tactfully managing relationships with stakeholders to achieve company-desired outcomes without compromising relationships. Emails, IMs and verbal interactions are logical, drive clarity, and detailed enough to eliminate ambiguity.

ITAR Requirements

• To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State.

Employment with Castelion is governed on the basis of competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.

All employees are granted long-term stock incentives as part of their employment at Castelion. All employees receive access to comprehensive medical, vision, and dental insurance, and the company offers four weeks of paid time off per year.