Senior Software Engineer In Test Jobs in Argyle, TX

Trusted Connectivity for AI-Powered Dominance. Everfox delivers trusted connectivity to protect the world’s most critical environments and safeguard the sensitive data powering decision advantage. Built for mission-critical operations, Everfox protects what matters most by securing how data moves, how users access it, and how threats are neutralized across every domain. We enable mission speed and secure collaboration across networks, domains, and allies, while ensuring the data powering AI and advanced analytics remains trusted and protected. We don’t just defend systems; we deliver decision dominance. Our Purpose. Protect what matters most by enabling organizations to operate security in the most complex and high-risk digital environments. Our Vision. To be the most trusted authority in high-assurance cybersecurity, enabling secure collaboration across every domain. Our Belief. Security should never limit mission success – it should enable it. Our Promise. We deliver absolute confidence in environments where failure is not an option.

We’re hiring for a hybrid role. You’ll work on-site with your team several days each week (typically 2–3), with the specific days set by your manager. Because regular in-person collaboration is central to this job, we look for candidates who live within about 50 miles of the office. Everfox will consider reasonable accommodation as required by law.

The role of Software Engineer in Test II at Everfox presents an exciting opportunity to advance your career in cybersecurity. This role involves utilizing various engineering and interpersonal skills to enhance the quality of our products. As a member of the QA Software Integration team, you will be responsible for planning, creating, and executing complex manual and automated tests across our portfolio of cybersecurity products.

Location: Hybrid - Dallas/Fort Worth, TX or Richardson, TX

• Create scripts in various programming languages to automate testing of Linux‑based cybersecurity applications.
• Plan, create and execute integration tests across Everfox’s portfolio of products.
• Validate cybersecurity software products using systematic tests to develop, apply, and maintain quality standards.
• Create, update, and execute software testing processes in an agile scrum environment.
• Maintain documentation of test results to assist in debugging and modification of software.
• Analyze test results/data to ensure existing functionality and recommend corrective action.
• Consult with members of the development team in resolution of challenges.
• Develop professional expertise, apply company policies and procedures to resolve a variety of issues.
• Provide feedback in preparation of technical appraisals and regulatory approval.
• Apply standard principles, theories, concepts, and techniques in daily workflow.
• Exercise judgment within defined procedures and practices to determine appropriate action.
• Contribute to the fulfillment of projects and organizational objectives.

• Ability to obtain US‑government‑issued Secret Security Clearance.
• University degree and 2-4 years of related experience, or equivalent work experience.
• Experience with Linux/Unix based operating systems.
• Good understanding of network protocols (TCP, UDP, HTTP, SFTP, IP) and network security (Firewall, RSA, PKI).
• Test automation using Linux shell scripting, Python etc., including experience with Pytest frameworks or similar.
• Experience with CI/CD pipelines (e.g., Jenkins, or equivalent).
• Team player with strong written and verbal communication skills.
• Ability to work from the office 2–3 days per week or on an as‑required basis.

• Experience with Lab Base Security Assessments.
• Experience using Zephyr Scale test case manager in JIRA.
• Experience with virtualized environments (VMware, Vsphere, ESXi).
• Experience utilizing GenAI tools (e.g., Claude, Copilot) to accelerate test design, automation, and analysis.

A reasonable estimate of the base salary range for this role is: $98,900.00-129,200.00 USD The actual salary offered may vary within the range based on a candidates' unique experience, locale, and business needs.

In addition to a base salary and bonus plans, Everfox offers a generous benefits package including flexible PTO, a 401k match, and contribution to healthcare coverages.

Our Talent Acquisition team will provide specific information regarding bonus eligibility and benefits offerings.

Don’t meet every single qualification? Studies show people are hesitant to apply if they don’t meet all requirements listed in a job posting. If there is something slightly different about your previous experience, but it otherwise aligns and you’re excited about this role, we encourage you to apply. You could be a great candidate for this or other roles on our team.

Everfox is an equal employment opportunity employer and complies with all applicable federal, state, and local laws prohibiting discrimination. Everfox does not discriminate against any employee or applicant based on race, color, religion, sex, age, national origin, disability, veteran status, marital status, medical condition, or any other category protected by applicable law.

If you are a qualified individual with a disability or a disabled veteran, you may request a reasonable accommodation if you are unable or limited in your ability to use or access the Company’s career webpage as a result of your disability. You may request reasonable accommodations by sending an email to humanresources@everfox.com.

Everfox is a Federal Contractor. Certain positions with Everfox require access to controlled goods and technologies subject to the International Traffic in Arms Regulations or the Export Administration Regulations. Applicants for these positions may need to be "U.S. Persons," as defined in these regulations. Generally, a "U.S. Person" is a U.S. citizen, lawful permanent resident, or an individual who has been admitted as a refugee or granted asylum.

Applicants must have the right to work in the location to which you have applied.

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Everfox delivers trusted connectivity to protect the world’s most critical environments and safeguard the sensitive data powering decision advantage. Built for mission-critical operations, Everfox protects what matters most by securing how data moves, how users access it, and how threats are neutralized across every domain. We enable mission speed and secure collaboration across networks, domains, and allies, while ensuring the data powering AI and advanced analytics remains trusted and protected. We don’t just defend systems; we deliver decision dominance. Our Purpose. Protect what matters most by enabling organizations to operate security in the most complex and high-risk digital environments. Our Vision. To be the most trusted authority in high-assurance cybersecurity, enabling secure collaboration across every domain. Our Belief. Security should never limit mission success – it should enable it. Our Promise. We deliver absolute confidence in environments where failure is not an option.