Software Engineer III, DevOps​/DevSecOps; Clearance Required

Position: Software Engineer III, DevOps/DevSecOps (Clearance Required)

Sierra Space Careers:

At Sierra Space, we build the missions and systems that keep our world secure in the domain above Earth.

Sierra Space team members share a spirit of innovation and collaboration and a belief that we can deliver on the boldest missions in space today. Together with our customers, we aim to safeguard our nation, sustain human presence in space, and secure the freedom of operations in low Earth orbit and beyond.

Our success is measured by the trust of those who rely on what we build and deliver, and our technologies keep the United States and its allies mission-ready throughout space.

We are mission-driven, and together, we are an extraordinary team.

About the Role The Software Engineer III role involves designing, developing, and testing software applications for space systems and technologies. This advanced position requires expertise in at least one programming language, an advanced understanding of software development principles, and the ability to design and architect complex software systems. The role includes writing clean, maintainable code, collaborating with team members to understand project requirements, and contributing to the development of innovative software solutions.

Additionally, this position involves mentoring and guiding other engineers, providing technical leadership and support.

As a key member of our team, you will be responsible for designing, implementing, and maintaining CI/CD pipelines and Kubernetes deployments such as the Big Bang framework, while also developing comprehensive testing strategies throughout the deployment pipeline. This role spans both on-premises and cloud environments, with particular emphasis on air-gapped operations. You will design and maintain infrastructure using secure IaC tools like Terraform or Ansible, implement comprehensive observability solutions for proactive monitoring, and seamlessly integrate security practices throughout the development lifecycle.

Your testing responsibilities will include designing automated test frameworks for infrastructure validation, implementing test-driven development practices, creating testing suites for container security and compliance, and establishing quality gates within CI/CD pipelines. The ideal candidate must have strong expertise in container technologies, Git Ops workflows, infrastructure as code, software development workflows, security tooling, and automated testing methodologies.

Experience with infrastructure testing tools, container image scanning, proficiency in writing automated tests for Kubernetes deployments, and knowledge of security testing frameworks is essential. You should be comfortable collaborating with development teams to optimize processes and ensure high-quality, reproducible software delivery that meets stringent compliance requirements through rigorous testing and validation.

About You

Our mission is driven by an unyielding commitment to advancing space-based technology in service of our customers and safeguarding national security. We seek individuals who are passionate about innovating beyond boundaries and relentlessly pursuing solutions that protect, preserve and empower - to join us in this critical mission.

We're looking for team members who align with our values, mission and goals - while also meeting the minimum qualifications below. The preferred qualifications are a bonus, not a requirement.

Minimum Qualifications:

• Requires bachelor's degree in a related field (or equivalent work experience in lieu of degree or master's +3 yrs experience).

• Typically, 5+ years of related experience.

• Expertise in one to multiple programming languages and advanced understanding of software development principles.

• Ability to design and architect complex software systems.

• Experience with different software development methodologies such as Agile and Scrum/Kanban.

• Strong problem-solving skills.

• Ability to mentor and guide other engineers.

• An active Top Secret U.S. Security Clearance is required.

Preferred Qualifications:

• Proven experience as a Dev Ops/Dev Sec Ops  Engineer

• Experience setting up and maintaining software test infrastructure

• Experience with setting up and…