Software Test Engineer III; Clearance Required

Position: Software Test Engineer III (Clearance Required)
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** 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 Test Engineer III is responsible for leading testing processes, designing comprehensive test plans, developing testing strategies, and architecting testing frameworks for large and complex aerospace software projects. You will participate in the development and execution of comprehensive test plans, test cases, and test procedures to verify the functionality, performance, and reliability of aerospace software systems used in space vehicles and other aerospace applications.

In this role you will also be responsible for coordinating testing activities, ensuring thorough coverage of all requirements, and performing defect triage.

Your role will involve significant interaction with cross-functional teams, including software development, systems engineering, and quality assurance to ensure compliance with technical specifications and adherence to software quality standards. You will also mentor and guide junior engineers, fostering a culture of continuous improvement and technical excellence while contributing to the success of complex space missions.
Key responsibilities include developing and executing test plans, cases, and procedures to ensure software functionality, performance, and reliability. This involves creating and reviewing automated test scripts, collaborating with developers to design effective test strategies, and managing the defect lifecycle from discovery to resolution. Additional duties include optimizing testing processes, performing regression testing, maintaining test documentation, and implementing automated tools to enhance efficiency.

The role also requires mentoring junior engineers, participating in code reviews, staying updated on industry best practices, and designing complex test systems to meet project requirements.#
** 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.##
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* 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.##
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* Preferred Qualifications:

*** Proficiency with Linux-based and Windows-based software development environments.
* Experience with automated testing tools and frameworks.
* Knowledge of software testing methodologies and best practices.
* Familiarity with continuous integration and continuous deployment (CI/CD) processes.
* Understanding of software development lifecycle (SDLC) and agile methodologies.
* Ability to rapidly work with minimal supervision on projects involving both small and large engineering teams.
* Ability to…