Software Testing Jobs in Frederick, MD (NOW HIRING)

Location: Northern Virginia
Travel: Up to 25%
Clearance: Active Top Secret clearance or higher required
Citizenship: US Citizenship required

Grimm is an innovative, forward-looking cybersecurity organization focused on solving complex technical challenges across hardware, firmware, and software systems. Our teams specialize in reverse engineering, vulnerability research, and security engineering, supporting mission-critical efforts across national security, defense, and critical infrastructure sectors.

Our work is rooted in real-world operational experience identifying advanced threats, uncovering critical vulnerabilities, and developing meaningful solutions to complex problems. Grimm engineers operate across embedded systems, vehicles, IoT, and enterprise technologies, with a focus on understanding systems deeply and demonstrating real-world impact.

We are a highly technical and hands-on organization. Our engineers and researchers specialize in breaking systems, discovering vulnerabilities, and improving resilienceworking directly with real hardware and software to understand how systems function and how they fail.

Grimm is seeking a Mid-Level Software Tester to support mission-focused software development and testing efforts.

This role is centered on software test automation, test procedure development, operational testing, and full lifecycle test support for mission-critical software systems. The ideal candidate will have experience building and maintaining automated test frameworks, supporting test readiness activities, and working within modern containerized software environments.

We're looking for individuals who are detail-oriented, technically capable, and passionate about ensuring software systems operate reliably and effectively in complex operational environments.

• Develop, maintain, and update automated test procedures and scripts
• Support testing activities across the full software development lifecycle
• Develop automated testing solutions using existing test automation frameworks
• Generate automated test reports detailing performance, results, and identified issues
• Containerize test code and maintain testing workflows within Docker environments
• Automate test procedures for REST-based backend services using SOAPUI or equivalent tools
• Support enterprise Java Message Service (JMS) testing activities
• Conduct and participate in Test Readiness Reviews (TRRs)
• Participate in Test Review Meetings covering system test execution and results
• Maintain repositories of test data supporting operational testing activities
• Prepare, review, and execute test plans, test cases, and test procedures
• Collaborate with software engineers, developers, and government stakeholders

• Bachelor's degree in a technical field or equivalent related experience
• Minimum five years of relevant hands-on software testing experience
• Experience performing software testing throughout the full system development lifecycle
• Experience developing and maintaining:
  • Test plans
  • Test cases
  • Test procedures
• Experience with test automation frameworks and automated testing methodologies
• Experience containerizing test code using Docker
• Experience automating REST-based backend testing using SOAPUI or equivalent tools
• Experience working with enterprise Java Message Service (JMS) solutions
• Experience generating automated testing reports and operational test documentation
• Strong written and verbal communication skills
• Ability to work collaboratively across technical and operational teams
• Must be a US Citizen

• Experience supporting classified government programs
• Experience managing multiple interdisciplinary efforts concurrently
• Management or technical lead experience
• Experience supporting:
  • Government contracting
  • DoD programs
  • Intelligence Community customers
• Ability to professionally prepare and present technical documentation to senior government leadership
• Experience supporting operational test environments and mission systems
• Familiarity with Agile development and DevSecOps environments

Grimm offers a comprehensive benefits package that includes medical, dental, and vision coverage, life and disability insurance, retirement benefits, paid leave, and opportunities for tuition assistance and ongoing professional development.

You'll be working alongside highly specialized engineers and technical teams supporting mission-critical software systems and national security efforts. Our work requires strong technical ownership, attention to detail, and the ability to operate effectively within fast-moving engineering and operational environments.

If you enjoy solving technical problems, improving software quality, and supporting complex systems through testing and automation, you'll find this environment both challenging and rewarding.

• Prolonged periods sitting at a desk and working on a computer

Grimm is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, sexual orientation, and gender identity), national origin, age, disability, genetic information, veteran status, or any other characteristic protected by applicable federal, state, or local laws.