Penetration Test Engineer III at True Zero Technologies | Washington DC

Join True Zero Technologies, a distinguished veteran-owned small business, dedicated to the strategic integration of technology and human potential to enhance organizational success. We believe that our achievements are fueled by our community of passionate, driven individuals committed to delivering outstanding services to our clients. Recognized as a "Best Places to Work" in 2023 in both the "Prosperous and Thriving" and "Mid-Atlantic Region" categories, and featured in Inc. Magazine's Top 5000 Fastest Growing Companies in 2022, we are looking for talented professionals to join our dynamic team.

Join True Zero Technologies, a proud veteran-owned small business dedicated to the meaningful integration of people and technology. We believe that the success of any organization is deeply rooted in the strengths and capabilities of its workforce. Our team comprises passionate and innovative individuals who share a common vision of delivering exceptional services to our clients. Our commitment to fostering a positive work culture has earned us numerous accolades, including recognition as one of the Best Places to Work in 2023 across two categories: “Prosperous and Thriving” and “Mid-Atlantic Region”. We were also honored on the Inc. 5000 list of America’s fastest-growing companies in 2022, 2023, and 2025. This recognition reflects our sustained growth driven by our unwavering dedication to excellence and a people-first approach.

True Zero Technologies, a veteran-owned small business, is dedicated to the meaningful integration of people and technology, which we believe is directly linked to the quality of outcomes achieved by organizations. Our commitment to our workforce is paramount; we have cultivated a community of passionate innovators who strive to deliver exceptional services to our clients. In 2023, we were honored with the title of “Best Places to Work” in two categories: "Prosperous and Thriving" and "Mid-Atlantic Region". Additionally, in 2022, we were proud to be listed among Inc. Magazine’s Top 5000 Fastest Growing Companies.As the Information Systems Security Officer (ISSO) Lead, you will be the key advisor to the Information System Owner (ISO), the Business Process Owner, and the Chief Information Security Officer (CISO) / Information System Security Manager (ISSM) on all technical and operational matters concerning the security of their designated information systems. Your expertise will be crucial in fortifying our security posture and ensuring compliance with relevant regulations.

A new era of space exploration has commenced! True Anomaly is on the lookout for talented and driven individuals to create groundbreaking technology that addresses the engineering, manufacturing, and operational challenges of space security and sustainability.OUR MISSIONEnsuring the peaceful utilization of space is vital for the ongoing prosperity of life on Earth—impacting everything from communications and finance to navigation and logistics. At True Anomaly, we develop innovative technology that merges spacecraft, software, and AI, enhancing the capabilities of the U.S., its allies, and commercial partners. Our commitment is to safeguard global security by promoting sustainable access to space for everyone.OUR VALUESBe the offset. We create asymmetric advantages through creativity and ingenuity.What would it take? We challenge assumptions to achieve ambitious results.It’s the people. Our team is our competitive edge; together, we are stronger.YOUR MISSIONAs a key member of the Proposal team, you will play an essential role in driving True Anomaly’s growth and revenue generation. Working within a dynamic start-up environment, you will collaborate with account leads from the business development team and technical teams to craft compelling content that caters to a variety of use cases across the acquisition lifecycle—from early-stage capture and sales enablement to advanced proposal artifacts (RFx). Your ability to translate complex technical language into accessible customer-friendly content will be crucial in delivering high-quality artifacts that support our business objectives. As an effective communicator, detail-oriented professional, and creative writer, you will transform intricate technical concepts into persuasive RFx documents, white papers, and more. By understanding customer needs, you will produce content tailored to their unique requirements. We seek mission-driven teammates who are eager to dive into diverse writing projects and deliver top-notch outputs within tight deadlines.

Role Overview Accenture Federal Services is hiring a Penetration Tester in Washington, DC. This position supports cybersecurity efforts for government clients. The role focuses on finding vulnerabilities and strengthening security controls to protect sensitive information.

Job Overview:Join our dynamic team at Shield AI as a Senior Engineer focusing on Systems Test, where your expertise in simulation-driven testing and software quality assurance will play a crucial role in advancing our groundbreaking Hivemind autonomy technology. You will be responsible for creating and implementing robust testing frameworks and methodologies, ensuring our systems deliver reliable performance across both simulated and real mission scenarios.As a rapidly growing company, we value adaptability, a growth mindset, and a passion for learning new technologies. Be a part of our mission-driven culture where your contributions will help shape the future of intelligent systems designed to protect service members and civilians alike.

Role overview SOS International LLC is hiring a Senior Penetration Tester based in Washington, DC. This position centers on evaluating the security of client systems and networks by performing detailed penetration tests. The work aims to uncover vulnerabilities and provide actionable recommendations to improve overall security. What you will do Perform comprehensive penetration tests across various client environments Identify, analyze, and document security weaknesses and possible exploits Create and deliver recommendations to enhance security measures Work closely with clients and internal teams to share findings and discuss solutions Requirements Solid technical experience in penetration testing and vulnerability assessment Strong analytical skills for effective problem-solving Ability to communicate findings and recommendations clearly

About UsHelsing is at the forefront of defense AI technology, dedicated to safeguarding our democratic values. Our goal is to establish technological supremacy that empowers open societies to make independent choices and uphold their ethical standards.As a defender of democracy, we recognize our unique obligation to thoughtfully develop and implement transformative technologies like AI. We take this duty with utmost seriousness.We are a passionate and dedicated team of engineers, AI experts, and program managers, seeking mission-driven individuals to join our European teams and leverage their skills to tackle some of the most challenging and significant issues. We foster a transparent and open culture that encourages constructive discussions about the application of technology in defense, its advantages, and its ethical considerations.The RoleAs an IT Engineer, you will oversee Helsing's IT and infrastructure in the United States. Your responsibilities will span across teams and locations to create a secure and reliable infrastructure that supports collaborative efforts focused on the transmission, development, and delivery of defense technologies in compliance with relevant regulations, standards, and industry best practices. You will play a critical role in enabling Helsing to provide advanced systems that address the challenges of future battlefields.Daily ResponsibilitiesConfigure and manage endpoints, including workstations, laptops, and servers.Provide support for an office consisting of approximately 10-25 employees.Establish and maintain on-premises computer environments primarily based on Linux.Manage and configure our network and VPN infrastructure.Collaborate with Helsing's broader IT team to optimize the operational efficiency of Helsing US's corporate, development, and customer environments, largely utilizing Microsoft 365, Azure, and other SaaS solutions.

Role overview MetroStar Systems is hiring a Senior Network Engineer III for its Washington, DC office. The focus of this position is on designing, implementing, and managing network solutions that ensure reliable connectivity and strong performance for clients. What you will do Design and implement network architectures that address specific client requirements Manage and optimize network infrastructure to support stability and efficiency Troubleshoot and resolve complex network challenges Work closely with team members to deliver secure, high-performing solutions What sets this role apart This role involves tackling challenging projects within a team that values creative problem-solving and professional growth. The work directly supports MetroStar Systems' reputation for providing reliable network infrastructures. Location Washington, DC

Join ableserve as a Chief Engineer, where you will lead innovative engineering projects and spearhead the development of cutting-edge solutions. In this pivotal role, you will oversee engineering operations, manage a talented team, and ensure the successful execution of projects from conception to completion.

Join XMSTART, a leading company in the field of systems engineering, as we seek talented and strategic full-time Systems Engineers to join our dynamic team in Chantilly, VA or Washington, DC. This role requires 100% on-site presence to foster collaboration and innovation.Security Clearance Requirements:Active TS/SCI with Polygraph is mandatoryEducation:Bachelor's Degree is preferredQualifications:Proven technical experience with Intelligence Community (IC) analytic toolsStrong understanding of the system development lifecycle (SDLC)Hands-on experience with systems integration and configurationFamiliarity with programming languages such as Python and Java, along with scripting capabilitiesExpertise in operating systems including Windows and Linux, as well as knowledge of network protocolsResponsibilities:System Design and DevelopmentAssess user requirements and system specificationsCreate system architectures and detailed specificationsIntegrate hardware and software components to deliver fully functional systemsSystem ImplementationInstall, configure, and rigorously test system componentsDevelop and maintain critical documentation, including technical specifications and user manualsEnsure system compatibility and interoperabilitySystem Maintenance and OptimizationMonitor system performance and effectively troubleshoot issuesImplement necessary updates, patches, and upgradesOptimize system processes to enhance efficiency and reliabilityCollaboration and CommunicationCollaborate with cross-functional teams, including developers, network engineers, and project managersCommunicate complex technical concepts to non-technical stakeholdersProvide training and support to end-usersCompliance and SecurityEnsure adherence to industry standards and organizational policiesImplement robust security measures to safeguard system integrity and protect dataXMSTART Inc. is an Equal Opportunity Employer

Join the dynamic team at XMSTART, where we are actively seeking skilled and strategic full-time Systems Engineers based in either Chantilly, VA or Washington, DC. These roles require a commitment to working 100% onsite.Key Responsibilities:Analyze user requirements and system specifications to design effective solutions.Develop system architectures and detailed specifications tailored to client needs.Seamlessly integrate hardware and software components to produce operational systems.System Implementation:Install, configure, and rigorously test system components for optimal performance.Create and maintain comprehensive documentation, including technical specifications and user manuals.Ensure systems are compatible and interoperable with existing infrastructure.System Maintenance and Optimization:Continuously monitor system performance, troubleshoot issues, and implement necessary updates.Enhance system processes to boost efficiency and reliability.Collaboration and Communication:Engage with cross-functional teams including developers, network engineers, and project managers.Translate complex technical concepts into understandable terms for non-technical stakeholders.Provide training and support to end-users to ensure effective system utilization.Compliance and Security:Ensure all systems adhere to industry standards and internal policies.Implement robust security measures to safeguard system integrity and data privacy.XMSTART Inc. is committed to fostering a diverse and inclusive workplace.

Role Overview Viderity is seeking a DevOps Engineer based in Washington, DC. This role focuses on automating build, test, and deployment systems to support a range of codebases, tools, and platforms. What You Will Do Design and implement automated solutions for building, testing, and deploying applications across multiple environments and technologies. Work closely with both legacy and new project teams to improve development pipelines and streamline the software development lifecycle. Maintain and troubleshoot continuous integration systems to keep build and deployment processes running smoothly. Develop, maintain, and troubleshoot automated testing frameworks and tools for a variety of projects and methodologies, including Agile and Waterfall. Set standards for static code analysis and track related metrics across project teams. Architect cloud-based solutions, including configuring and launching virtual machines for application deployment. Work with both Linux and Windows systems, emphasizing automation and scalability. Communicate proactively with project teams to ensure coordination and efficient workflows. Identify and implement improvements to speed and efficiency as technologies evolve. Research new DevOps tools and trends, evaluating open-source options and industry developments for possible adoption.

Join VIA Science and Make a Difference!At VIA, we are dedicated to transforming communities into cleaner, safer, and more equitable places. Our collaborative approach allows us to achieve greater collective good across organizational boundaries.VIA is a trusted partner for the U.S. Department of Defense and Fortune 100 companies, tackling their most challenging data and identity protection issues. Our innovative Web3, quantum-resistant, passwordless technologies—backed by 20 issued patents—ensure that we safeguard data against theft, manipulation, and misuse.The heart of our mission lies in developing unbreakable software.We are searching for a strategic Senior Quality Assurance Engineer to establish and uphold our quality standards. This role transcends traditional QA functions; you will pioneer systems that enable our engineers to seamlessly incorporate testing into their daily workflows. By harnessing AI-driven automation, you will replace manual processes and ensure our products adhere to stringent security requirements.Your Responsibilities Will Include:Defining the quality gates and testing methodologies applicable across the engineering organization.Collaborating with engineering teams to integrate developer-level testing, promoting early detection of issues and fostering a culture of shared ownership over testing processes.Overseeing the testing infrastructure, including the selection, implementation, and maintenance of tools and systems needed for scalable, resilient software.Identifying and implementing AI tools to eliminate manual bottlenecks and automate repetitive testing tasks, optimizing efficiency and coverage.Championing QA excellence by partnering with technical leadership and Client Delivery Leads to prioritize testing throughout project planning and resource allocation.

We are seeking a talented Solutions Architect to join our dynamic team at cape. In this role, you will play a pivotal part in designing and implementing innovative solutions that meet the needs of our clients. You will collaborate closely with cross-functional teams to ensure that our offerings are aligned with the latest technological advancements and best practices.Your expertise will help shape the future of our projects, driving efficiency and effectiveness in our solutions. If you are passionate about technology and eager to make a significant impact, we want to hear from you!

True Zero Technologies is a distinguished veteran-owned small business that operates on the belief that the strategic empowerment of individuals and technology within an organization is fundamentally linked to the quality of its results. Our commitment starts and ends with our people, fostering a community of passionate, innovative individuals driven by a shared mission of delivering exceptional services to our clients. Our workplace culture has garnered recognition, earning us accolades such as being named one of the Best Places to Work in 2023 in two categories: “Prosperous and Thriving” and “Mid-Atlantic Region”. Furthermore, we have been honored as a Best Places to Work honoree in 2025 and have consistently appeared in the Inc. 5000 list of the fastest-growing companies in America in 2022, 2023, and 2025, reflecting our ongoing growth fueled by a people-first approach and dedication to excellence. In this role, the selected candidate will be responsible for executing vulnerability identification, scanning, analysis, and coordination to mitigate system attacks. The candidate will maintain rigorous vulnerability workflows from discovery through validation and resolution. Additionally, the role supports compliance scanning and troubleshooting across various environments, including cloud and on-site settings, ensuring that reporting is timely, accurate, and actionable for stakeholders.

Role overview MetroStar Systems seeks a Senior Network Security Engineer III in Washington, DC. This position centers on protecting network infrastructure and maintaining a secure operational environment. Candidates must be clearable and demonstrate strong attention to detail, along with a proactive mindset toward network security. What you will do Identify vulnerabilities within network systems and provide recommendations for effective solutions Implement security measures to reinforce network defenses Support and encourage best practices in network security across the organization Apply expertise to help maintain a secure and reliable infrastructure Location This position is based in Washington, DC. Work is onsite or as determined by MetroStar Systems.

Join our dynamic team as a Senior Site Reliability Engineer (SRE) III, where your expertise will be instrumental in delivering cutting-edge technical solutions to the highest levels of the federal government. At MetroStar, we believe that exceptional technology services stem from extraordinary people. With a two-decade legacy of cultivating the best teams, we are deeply committed to our mission: Passion for our people. Value for our customers. If you're eager to contribute to our mission and help us achieve our goals, we invite you to explore the job description below!

Join Our Innovative AI Lab as a DevOps Engineer!At Cognition, we are at the forefront of applied artificial intelligence, creating cutting-edge software agents that transform the engineering landscape. Our flagship products, Devin—the world's first AI software engineer—and Windsurf, an AI-native integrated development environment (IDE), embody our vision for collaborative AI that allows engineers to tackle more challenging and rewarding problems.Our team is a powerhouse of talent, featuring elite competitive programmers, former entrepreneurs, and leaders from top-tier AI companies such as Scale AI, Palantir, Waymo, Tesla, and Google DeepMind.While we have successfully developed Devin and Windsurf, we recognize that our most significant challenges are still ahead. If you are passionate about solving major global issues and developing AI that can reason through real-world tasks, we invite you to become a part of our journey.About the RoleThis is an exceptional opportunity to become a foundational engineer within our newly established federal division. As one of the pioneering engineers in this vital area, you will have a significant impact on shaping our technical direction and achieving initial project milestones. You will also be crucial in guiding the strategic growth and scalability of our federal engineering team, establishing essential engineering practices, defining our technical stack for federal clients, and influencing the culture of a mission-driven team.As a Federal DevOps Engineer, you will be a full-stack deployment expert, responsible for managing the technical lifecycle of our key federal enterprise deployments.You will lead a focused set of strategic deployments, collaborating directly with customer engineering teams to outline complex deployment requirements, ensure adherence to security protocols, and implement necessary platform modifications.A pivotal aspect of this role is enhancing our products from a deployability and operability perspective. You will make direct modifications to the core codebase, ensuring our products can be deployed efficiently and reliably across various environments. You will identify deployment patterns in the field and translate those insights into actionable requirements that guide future core engineering developments. When customers encounter challenges that our product does not address, you will be the problem-solver who identifies the necessary solutions and brings them to fruition.You will steer the technical strategy of our deployments, making critical decisions that influence long-term adoption, architectural design, and the evolution of the Cognition platform in real-world applications.

Sigma Defense is hiring a Systems Engineer in Washington, DC to support Navy Above Water Sensor and Combat System projects. This position covers the full system lifecycle, from shaping early requirements through delivery and evaluation. The role involves close collaboration with government stakeholders, industry partners, and cross-functional teams. What you will do Perform engineering analyses and help develop requirements Contribute to system design and participate in technical reviews Apply Model-Based Systems Engineering and digital engineering methods Assist with risk management, trade studies, and technology assessments Evaluate system performance and help plan testing and evaluation Support modeling and simulation activities Assist with cybersecurity engineering and RMF documentation Provide technical input for acquisition milestones Work closely with stakeholders and project teams Location This position is based in Washington, District of Columbia, United States. Additional details Employment is contingent upon the successful award of a contract. Offers will be extended once the contract is finalized. Equal Opportunity Sigma Defense is an Equal Opportunity Employer/Veterans/Disabled. All qualified applicants will be considered for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status. Sigma Defense does not discriminate on the basis of disability.