Principal Security Software Engineer at SpaceX | Washington, DC

Space Exploration Technologies Corp.Washington, DC

On-site Full-time

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Experience Level

Mid to Senior

Qualifications

Proven experience in software engineering with a focus on security. Expertise in developing secure software systems and protocols. Strong problem-solving skills and a passion for security innovation. Ability to work collaboratively in a fast-paced environment.

About the job

Join SpaceX as a Principal Security Software Engineer, where you will play a critical role in ensuring the security and integrity of our software systems. You will lead initiatives to develop, implement, and enhance security protocols that safeguard our operations and data.

About Space Exploration Technologies Corp.

SpaceX is a pioneering aerospace manufacturer and space transport services company. Our mission is to revolutionize space technology, with the ultimate goal of enabling human life on Mars. Join us in making history!

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Defensive Security Analyst - Hybrid Opportunity in Washington, DC

SpecterOps

Full-time|$110K/yr - $160K/yr|Hybrid|Hybrid, Washington DC

Join SpecterOps as a Defensive Security Analyst and play a pivotal role in enhancing security operations for our valued clients. In this hybrid position, you will collaborate directly with client teams, providing independent support in managing and monitoring Security Operations Center (SOC) systems. We are seeking a detail-oriented individual with robust te…

Mar 17, 2026

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Security Engineer at Helsing | Washington, DC

Helsing

Full-time|On-site|Washington, DC

About UsAt Helsing, we are pioneering the future of defense through artificial intelligence. Our mission is clear: to safeguard our democracies and ensure that open societies retain the authority to make sovereign decisions while upholding their ethical standards.We recognize the profound responsibility that comes with developing and deploying powerful technologies such as AI. Our commitment to thoughtful innovation is unwavering.As a dynamic and dedicated team of engineers, AI experts, and program managers, we invite mission-driven individuals to join us in addressing some of the most intricate and impactful challenges in the defense sector. Our culture fosters openness and transparency, encouraging constructive debates about technology use in defense, its advantages, and ethical considerations.Your RoleJoin us as we establish our first engineering team in the U.S. based in Washington, DC. As a key early member, you will play a crucial role in creating a secure infrastructure for our applications and cloud architecture. Your responsibilities will bridge security and engineering, encompassing cloud architecture, application SBOM, vulnerability scanning, and continuous monitoring of our cloud infrastructure (AWS/Azure/GCP).This position serves as a vital link between engineering and security operations, focusing on risk identification, designing and implementing security controls (firewalls, IAM, encryption), and performing in-depth analyses of cloud-native security logs to detect and address threats.Daily ResponsibilitiesCloud Infrastructure Security Design: Architect and implement secure cloud infrastructure while ensuring compliance with leading security frameworks (NIST, CIS Benchmarks, ISO 27001).Security Operations Collaboration: Collaborate closely with engineering teams to integrate security best practices into all phases of the software development lifecycle.Vulnerability Management: Conduct regular assessments and penetration tests to identify vulnerabilities and implement remediation strategies.Threat Intelligence: Stay updated on emerging threats and security trends, providing recommendations for proactive measures.

Feb 12, 2026

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Senior Security Operations Analyst at Anduril Industries | Washington, DC

Anduril Industries

Full-time|$166K/yr - $220K/yr|On-site|Washington, District of Columbia, United States

Anduril Industries is a pioneering defense technology company dedicated to enhancing the military capabilities of the U.S. and its allies through advanced technologies. By integrating the cutting-edge expertise, innovative technologies, and modern business models of today's leading companies, Anduril is revolutionizing the design, construction, and sale of military systems. Our suite of systems is powered by Lattice OS, an AI-driven operating system that transforms myriad data streams into a real-time, 3D command and control hub. As we navigate a new era of strategic competition, Anduril remains committed to delivering state-of-the-art autonomy, AI, computer vision, sensor fusion, and networking solutions to the military in a matter of months, not years.ABOUT THE TEAMJoin Anduril's Detection and Response team as a Senior Security Operations Analyst, where you will serve as the vigilant guardian of our critical defense technologies. In this role, you will actively monitor and respond to potential threats while collaborating closely with the detection engineering team to enhance detection feedback mechanisms. As a Senior SecOps Analyst, you will take on the role of incident commander, guiding the response efforts alongside fellow senior analysts. Your responsibilities will also include analyzing data sets, conducting threat hunting, and normalizing data across the organization to pinpoint user behavior anomalies.

Feb 13, 2026

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Industrial Security Lead at Helsing | Washington, DC

Helsing

Full-time|On-site|Washington, DC

About Helsing Helsing develops artificial intelligence solutions to help protect democracies worldwide. As the company grows its presence in the United States, Helsing seeks professionals who bring dedication and expertise to complex security challenges. Role Overview The Industrial Security Lead will oversee and strengthen Helsing’s security framework for U.S. operations based in Washington, DC. This includes responsibility for facility security, personnel security, CMMC compliance, and COMSEC operations. The role ensures adherence to the company’s Special Security Agreement and addresses the challenges of foreign ownership, control, or influence (FOCI) mitigation. The position offers the chance to design and implement security infrastructure that supports advanced AI technologies for defense applications. Key Responsibilities Serve as Facility Security Officer (FSO) for the U.S. subsidiary, maintaining full compliance with NISPOM (32 CFR Part 117), DCSA requirements, and all obligations under the Special Security Agreement (SSA).

Apr 15, 2026

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Systems Engineer at Sigma Defense | Washington, DC

Sigma Defense

Full-time|$135K/yr - $160K/yr|On-site|Washington, District of Columbia, United States

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.

Apr 23, 2026

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Defensive Security Analyst

Palantir Technologies

Full-time|On-site|Washington, D.C.

Join Palantir as a Defensive Security Analyst, where you'll play a pivotal role in safeguarding our global team and infrastructure. Your expertise in security will be complemented by your integrity and passion for technology. The ideal candidate thrives in a collaborative environment, is highly driven, and relishes the opportunity to tackle complex challenges. In this position, you will take charge of managing critical Security Operations Center (SOC) systems, ensuring they are meticulously engineered, maintained, and monitored to uphold our robust security posture.

Jan 8, 2026

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Senior Security Engineer at Anduril Industries | Washington, DC

Anduril Industries

Full-time|$166K/yr - $220K/yr|On-site|Washington, District of Columbia, United States

Anduril Industries is at the forefront of defense technology, dedicated to revolutionizing military capabilities for the U.S. and its allies through the integration of advanced technology. By leveraging innovative expertise and a modern business model, we are reshaping the design, construction, and deployment of military systems. Our state-of-the-art systems are driven by Lattice OS, an AI-enhanced operating system that seamlessly transforms vast data streams into a dynamic, real-time 3D command and control center. As global strategic competition intensifies, Anduril is resolutely focused on delivering cutting-edge solutions in autonomy, AI, computer vision, sensor fusion, and networking technology to military applications within months, not years.ABOUT THE TEAMThe Security Engineering team at Anduril is seeking a talented Senior Security Engineer to create top-tier defensive controls that safeguard our infrastructure connected to advanced defense technology products. In this pivotal role, you will conceptualize and execute innovative security architectures that shield our global network while acting as a vital security ally across the organization.ABOUT THE JOBWHAT YOU’LL DODesign and implement robust security controls across cloud environments, production setups, and corporate infrastructures.Develop tools and systems aimed at enhancing security posture and operational efficiency.Conduct thorough security architecture and design evaluations for various systems and applications.Automate processes to detect, monitor, and resolve security vulnerabilities.Collaborate across infrastructure, application, and operational security domains.

Mar 26, 2026

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IT Requirements Analyst

Agile Defense

Full-time|On-site|Washington, D.C.

Join Agile Defense, where innovation meets action! As a forward-thinking national security company, we tackle new challenges with creativity and expertise, ensuring our nation is prepared for tomorrow's demands.Our mission is to deliver cutting-edge solutions that enhance the safety and effectiveness of our nation's most critical operations. By integrating advanced technology with brilliant minds, we foster a culture of agility and adaptability to protect vital interests.Requisition: 1169Contract: NSB ITRole: IT Requirements AnalystClearance Requirement: Top Secret/SCI – CI PolygraphLocation: Washington, DCNon-Employee Referral Bonus: $2,000Overview:Agile Defense is seeking an IT Requirements Analyst to provide crucial support for a federal client’s national security initiatives. The Analyst will play a key role in aligning IT services with operational requirements and priority programs. This is an exempt position.As a valued employee at Agile Defense, you will enjoy a comprehensive benefits package, including health, dental, and vision insurance, a 401K plan with company matching, paid time off, holidays, and annual tuition/training support. For further details, please visit our website.Clearance:· Candidates must hold an active Top Secret clearance at the time of application and be able to complete a Counterintelligence (CI) Polygraph exam if a successful CI Poly has not been recorded in the last five years.Responsibilities:· The selected candidate will provide essential IT support for a priority national security program, including:o Assisting in the user requirements process by collecting, identifying, defining, aggregating, conceptualizing, and prioritizing both strategic and immediate needs.o Documenting detailed business and functional user requirements through interviews, workshops, and analysis of existing systems, aimed at evaluating legacy systems and processes for potential cloud migration.o Conducting regular assessments of technical systems and monitoring development efforts to evaluate risks, ensure alignment with current technology trends, and identify improvement opportunities for cost savings and system optimization.o Engaging with stakeholders across the organization to manage the collection, tracking, and analysis of user requirements.

Sep 9, 2025

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Senior Technical Analyst - Remote Opportunity in Washington, DC

Prosidian Consulting

Full-time|Remote|Washington

Join our dynamic team at Prosidian Consulting as a Senior Technical Analyst. In this role, you will leverage your analytical skills to provide critical insights and recommendations that drive business success. You will work closely with clients to understand their needs, conduct thorough technical analyses, and present your findings in clear, actionable formats.This position is fully remote, allowing you to contribute to impactful projects while enjoying the flexibility of working from home.

Nov 17, 2021

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IT Engineer at Helsing | Washington, DC

Helsing

Full-time|On-site|Washington, DC

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.

Feb 12, 2026

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Technical Analyst I - Remote Opportunities in Washington, DC

Prosidian Consulting

Full-time|Remote|Washington

Join Prosidian Consulting as a Technical Analyst I, where you will engage in impactful technical analysis to support our clients' needs. This is a unique opportunity to leverage your analytical skills in a remote work setting while collaborating with a talented team in Washington, DC.

Nov 17, 2021

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Cybersecurity Data Analyst at NexThreat | Washington, DC

NexThreat

Full-time|Hybrid|Washington, DC

Position: Cybersecurity Data AnalystLocation: Washington, DCJob Category: Information TechnologyEmployment Type: Full-timeTelework Potential: Offsite work permitted with prior written approval from the COR.Clearance Requirement: Must be ClearableEmployee Type: W2 or 1099Citizenship: US Citizen (no dual citizenship)NexThreat is on the lookout for a skilled Cybersecurity Data Analyst to join our team. In this role, you will play a critical part in the establishment, upkeep, and operational execution of cybersecurity analytics, dashboards, and reporting frameworks that bolster DOT OCIO cybersecurity initiatives. Your expertise will be vital in converting analytical directives and functional requirements into efficient data pipelines, visualizations, and metrics that inform executive and operational decisions.Key Responsibilities:• Design, develop, and sustain cybersecurity analytics and dashboards utilizing Databricks and Power BI.• Integrate data from key DOT systems, including SIEMs, CSAM, LMS, and various other enterprise data sources.• Implement data validation, reconciliation, and quality assurance measures to ensure the precision of reporting.• Create risk, compliance, training, and workforce metrics that align with NIST CSF and NIST SP 800-53 standards.• Assist in the ingestion and preparation of data from phishing exercises and training performance.• Generate analytical outputs that contribute to executive reporting, trend analysis, and situational awareness.

Feb 5, 2026

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Network Security Monitoring Analyst at Accenture Federal Services | Washington, DC

Accenture Federal Services

Full-time|$91.3K/yr - $184.9K/yr|On-site|Washington, DC

At Accenture Federal Services, our mission is to empower the US federal government to enhance the nation’s security and improve the quality of life for its citizens. With a dedicated team of over 13,000 professionals, we harness the full potential of technology and innovation to serve diverse sectors including defense, national security, public safety, civilian, and military health organizations. As part of Accenture Federal Services, a recognized leader in technology solutions within the global Accenture network, we have earned a place as one of Glassdoor's Top 100 Best Places to Work. Our collaborative culture fosters belonging, offering you opportunities for growth, learning, and advancement through practical experience, certifications, and industry training. Join us in our commitment to driving meaningful and sustainable change to advance government missions! The RoleThe Network Security Monitoring Analyst plays a crucial role within the Security Operations Center (SOC), acting as the frontline defense against cyber threats. This position involves the continuous surveillance of security systems, analyzing alerts, detecting potential incidents, and responding effectively to minimize risks. Analysts utilize various security tools, threat intelligence, and established protocols to uphold a robust security posture. This position demands a combination of technical proficiency, analytical skills, effective communication, and a dedication to ongoing learning.Key Responsibilities:Continuously monitor SIEM, IDS/IPS, EDR, firewalls, and other security systems for unusual activities.Triage and assess security alerts, distinguishing genuine threats from false positives.Facilitate incident response efforts, including triage, containment, eradication, and recovery.Examine security logs and correlate events across multiple sources.Incorporate threat intelligence into monitoring workflows and incident investigations.Document incident specifics, timelines, and actions taken.Assist in tuning, configuring, and maintaining security tools.Support compliance initiatives following NIST, FISMA, and internal policies.Collaborate with SOC team members, incident responders, and IT operations.Stay informed about emerging cyber threats, vulnerabilities, and security practices.

Apr 9, 2026

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Security Software Engineer at SpaceX | Washington, DC

SpaceX

Full-time|On-site|Washington, DC

Join SpaceX as a Security Software Engineer and play a pivotal role in safeguarding our advanced technologies. You will be involved in developing, implementing, and maintaining cutting-edge security software solutions to counteract emerging cyber threats. Collaborate with a team of passionate engineers and contribute to the safety and security of SpaceX’s missions.

Mar 27, 2026

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Business Analyst - Join CGS Federal in Washington, DC

CGS Federal

Full-time|Hybrid|Washington, DC

Business AnalystEmployment Type: Full-Time, ExperiencedDepartment: Information TechnologyCGS Federal is actively seeking talented Business Analysts to collaborate with a major federal agency! In this role, you will engage with internal business stakeholders and external partners to identify and explore new business opportunities while defining functional requirements that drive operational success.At CGS, we unite driven, highly skilled, and innovative professionals to tackle the most pressing challenges faced by the government through the application of advanced technology. We are in pursuit of candidates who are passionate about contributing to government innovation, thrive in collaborative settings, and possess the ability to foresee and address the needs of others. At CGS, we cultivate a supportive work environment and promote professional development through various learning initiatives. Key Responsibilities:- Assist in the preparation of briefings, agendas, and documentation, including training materials and demonstrations for stakeholders.- Document and analyze business and functional requirements to ensure accurate translation into process maps and technical specifications.- Create comprehensive documentation that adheres to organizational standards, including system architecture diagrams, concepts of operations, and status reports.- Develop high-level briefings and communication materials tailored for customers, management, and executive stakeholders.- Collaborate with government representatives and team members to identify, propose, and implement improvements in service delivery and technology adoption.- Evaluate program materials and devise innovative strategies for enhancement.- Independently collect information from subject matter experts to craft procedure manuals, technical specifications, and process documentation.- Acquire in-depth knowledge of Microsoft and Atlassian products (Teams, SharePoint, Visio, Jira, Confluence) to effectively convey complex product information in a clear and engaging manner.- Research, outline, write, and edit new and existing content to enhance clarity and engagement.

Mar 3, 2026

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FSR Analyst at CGS Federal | Washington, DC

CGS Federal

Full-time|On-site|Washington, DC

Join CGS Federal as an FSR Analyst, where you'll play a pivotal role in transforming complex data into actionable insights. In this full-time, mid-level position based in Washington, DC, you will work closely with teams on-site to enhance their understanding of data, improve decision-making processes, and integrate analytics into daily operations through a robust data platform.At CGS, we unite passionate and skilled professionals to tackle the government's most pressing challenges using innovative technology. We value collaboration and are looking for individuals who are eager to drive government innovation while anticipating the needs of their colleagues. Our supportive work environment fosters professional growth through various learning opportunities.

Feb 10, 2026

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Data Analyst at Catalist | Washington, DC

Catalist

Full-time|On-site|Washington, DC

With nearly two decades of pioneering contributions to civic data and data science, Catalist stands at the forefront of innovation in these fields. Our primary goal is to empower progressive organizations by equipping them with essential data, software, and services that enhance their ability to engage and mobilize communities effectively. Our esteemed clientele includes some of the most influential organizations in the U.S. focused on civic engagement, advocacy, and political campaigns.Catalist is proud to foster a dynamic and creative environment, bringing together a team of dedicated technologists, data scientists, and campaign specialists. We are committed to leveraging our expertise and technology to cultivate a thriving progressive community.The Catalist Analytics department plays a crucial role in supporting data-driven progressive organizations, enhancing civic participation, and executing effective electoral initiatives. Our team specializes in developing innovative statistical methodologies to address unique challenges such as systematic missing data, latent variable detection, supervised modeling, and unsupervised modeling.As an integral member of the Analytics team, Analysts are responsible for fulfilling client data requests, contributing to internal research and development efforts, managing data, and translating complex analytics materials into accessible formats for clients. Analysts will also have the opportunity to receive mentorship from senior analytics and technical personnel both within Catalist and through our community and academic partnerships.This position reports directly to the Deputy Director of Analytics and collaborates closely with the Client Services, Data, and Tech teams.This position is part of our CWA bargaining unit.

Feb 27, 2026

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Principal Security Software Engineer at SpaceX | Washington, DC

Space Exploration Technologies Corp.

Full-time|On-site|Washington, DC

Mar 27, 2026

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Junior Physical Security Specialist at CGS Federal | Washington, DC

CGS Federal

Full-time|On-site|Washington, DC

CGS Federal is actively seeking a dedicated Junior Physical Security Specialist (PhySS) to enhance our critical operations supporting a federal client. This role is pivotal in maintaining a secure environment while ensuring compliance with established physical security standards.Key Responsibilities:Manage and secure Sensitive Compartmented Information Facility (SCIF) environments, ensuring adherence to all security protocols and standards.Collaborate effectively with cross-functional teams and stakeholders to foster a secure operational atmosphere.

Apr 6, 2026

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Security Specialist at Gavin de Becker & Associates | Washington, DC

Gavin de Becker & Associates

Full-time|On-site|Washington, DC

Gavin de Becker & Associates is hiring a Security Specialist based in Washington, DC. This position centers on protecting clients by using risk assessment skills and putting security strategies into practice. Key responsibilities Carry out thorough security evaluations for clients Create and suggest security solutions that fit each client’s needs Collaborate directly with clients to spot and address possible risks Location This role is located in Washington, DC.

Apr 27, 2026

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