Software Reverse Engineer (TS/SCI)- Senior & Mid Vexterra GroupSoftware Reverse Engineer (TS/SCI)- Senior & MidBethesda, MDAdvanced or Expert knowledge of the types and techniques of cyber exploitation and attack, including virus, worm, Trojan horse, logic bomb, and sniffer to identify, quantify, prioritize, and report vulnerabilities in enterprise architecture, networks, communications, applications, and systems. Advanced or Expert experience with reverse engineering and network security tools, including Ida Pro, Immunity Debug, WinDdg, VIM, Emacs, Trace32/JTAG, GDB, make, ctags, git, mercurial, and/or Wireshark.
Senior Software Engineer Sharetec Systems IncSenior Software EngineerMDRemote$120,000–$140,000 / yearYou'll contribute directly to significant product modernization initiatives, deliver features across our Digital Banking applications, and play a key role in architecting a new API layer that will expand the capabilities of Sharetec's Digital Banking platform. Experience shipping production mobile applications to the App Store (iOS) and Google Play (Android) - our mobile apps are built with React Native; candidates with native Swift or Kotlin experience are encouraged to apply as that experience transfers well.
Senior Software Engineer (Reverse Engineering) Visionist, Inc.Senior Software Engineer (Reverse Engineering)Fort Meade, MD$160,000–$240,000 / yearThis premier program encompasses traditional software services including Systems Design and Engineering, Database Administration, Data Science and Knowledge Management, Enterprise Risk Management, Integration and Test, as well as Operations and Systems Support. We embed small engineering teams with analysts to rapidly identify and solve mission capability gaps playing a critical role in defending our nation's cyber infrastructure & providing expertise in malware analysis, attribution, mapping adversarial infrastructure, pen testing, and operational planning.
Software Engineer Visionist, Inc.Software EngineerAnnapolis Junction, MD$150,000–$190,000 / yearWe embed small engineering teams with analysts to rapidly identify and solve mission capability gaps playing a critical role in defending our nation's cyber infrastructure & providing expertise in malware analysis, attribution, mapping adversarial infrastructure, pen testing, and operational planning. This premier program encompasses traditional software services including Systems Design and Engineering, Database Administration, Data Science and Knowledge Management, Enterprise Risk Management, Integration and Test, as well as Operations and Systems Support.
Advanced Software Engineer - Applied Mathematics General Dynamics Mission Systems, IncAdvanced Software Engineer - Applied MathematicsManassas, VA$118,570–$131,539 / yearGeneral Dynamics Mission Systems (GDMS) engineers a diverse portfolio of high technology solutions, products and services that enable customers to successfully execute missions across all domains of operation. Requires a Bachelor’s degree in Computer Engineering, Software Engineering, Computer Science, or a related Science, Engineering, Technology or Mathematics field.
Mid Level Software Engineer C# System OneMid Level Software Engineer C#Merrifield, VA$95,000–$105,000 / yearSystem One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. Join our team and help build innovative software solutions that drive business success while advancing your career in a dynamic and collaborative environment.
Lead Automation Test Engineer Karsun Solutions, LLCLead Automation Test EngineerHerndon, VirginiaFull timeThis individual must be able to lead and drive a team of senior automation engineers, establish reusable prompt templates, coach the team, and clearly explain and defend AI tools, framework, and migration decisions while consistently delivering on customer commitments. Establish reusable prompt templates and AI-assisted workflows for test generation, automation development, Selenium-to-Playwright migration, API testing, failure triage, flaky test analysis, and requirements coverage analysis.
Senior Software Engineer (Leadership) 2026-0138 Acclaim Technical ServicesSenior Software Engineer (Leadership) 2026-0138Chantilly, VAFull timeAcclaim Technical Services, founded in 2000, is a leading cyber operations, intelligence solutions and operations, network infrastructure, engineering and business enablement and enterprise operations company supporting a wide range of U.S. Federal agencies. You will take direct ownership of the control plane, administrative interfaces, user and role management, and peripheral/device management services, enabling the broader platform to be deployed and operated consistently in the field.
C/C++ Software Engineer AMERICAN SYSTEMSC/C++ Software EngineerMcLean, VirginiaFull timeOverview: We are seeking a highly skilled C/C++ Software Engineer to support mission-critical Command, Control, Communications, Computers, and Intelligence (C4I) systems for U.S. Customs and Border Protection’s Air and Marine Operations Center (AMOC). This role supports the Air and Marine Operations Surveillance System (AMOSS) and related ISR systems that provide real-time air and maritime domain awareness across national and international operating areas.
NewSr. Systems Engineer System OneSr. Systems EngineerGaithersburg, MDBachelor's degree in Systems Engineering, Computer Science, Software Engineering, Electrical Engineering or a related STEM discipline and 8-12 years of prior relevant experience or a Master’s with 6-10 years of prior relevant experience. Lead system performance assessments, troubleshoot complex issues across applications, infrastructure, interfaces, networks, and data flows, identify and mitigate technical risks, and drive solutions that ensure system reliability, mission effectiveness, and operational performance.
Senior Software Engineer Appian CorpSenior Software EngineerMcLean, VA$125,000–$250,000 / yearGrowth Opportunities: Appian provides a diverse array of growth and development opportunities, including our leadership program tailored for new and aspiring managers, a comprehensive library of specialized department training through Appian University, skills based training, and tuition reimbursement for those aiming to advance their education. As a performance-focused Mid to Senior level Software Engineer at Appian you will help build tools to solve complex performance problems and tackle our most challenging technical problems alongside other brilliant engineers.
Software Engineer (Distributed Systems & Cloud) Visionist IncSoftware Engineer (Distributed Systems & Cloud)Fort Meade, MD$150,000–$190,000 / yearThis premier program encompasses traditional software services including Systems Design and Engineering, Database Administration, Data Science and Knowledge Management, Enterprise Risk Management, Integration and Test, as well as Operations and Systems Support. We embed small engineering teams with analysts to rapidly identify and solve mission capability gaps playing a critical role in defending our nation's cyber infrastructure & providing expertise in malware analysis, attribution, mapping adversarial infrastructure, pen testing, and operational planning.
Software Engineer - Developer 3 The Structures Company, LLCSoftware Engineer - Developer 3Chantilly, VAAs trusted partners to leading aerospace and defense OEMs and Tier 1 suppliers, we connect professionals with career opportunities to grow and excel in aviation, aerospace, and defense. Bachelors degree in an engineering discipline (e.g., Computer Science, Software Engineering, Computer Engineering).
Desktop Packaging Engineer System OneDesktop Packaging EngineerReston, VA$99,000 / yearWork closely with infrastructure, endpoint engineering, application, security, and operations teams to ensure software is packaged and deployed consistently across large scale enterprise environments. Create, test, troubleshoot, and maintain software packages used across Windows 10 and Windows 11 desktop environments, focusing on reliability, security, automation, and operational efficiency.
Cloud Software Engineer, Level 2 Avalore, LLCCloud Software Engineer, Level 2Annapolis Junction, MDThree (3) years experience in Utility Computing, Network Management, Virtualization (VMWare or VirtualBox), Cloud Computing 2. Multi Node Management and Installation: Management and installation of Cloud and Distributed Computing on multiple nodes, Python, CFEngine, Bash, Ruby or related technologies. Provides specific input to the software components of system design to include hardware/software trade-offs, software reuse, use of Commercial Off-the-shelf (COTS)/Government Off-the-shelf (GOTS) in place of new development, and requirements analysis and synthesis from system level to individual software components.
Test Automation Engineer - U.S. Citizenship Required CGI IncTest Automation Engineer - U.S. Citizenship RequiredFairfax, VAHowever, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with CGI's legal duty to furnish information. You'll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.
Senior Software Engineer FacilityOSSenior Software EngineerAnnapolis, MarylandThis role is well suited for someone who is comfortable navigating legacy systems, applying strong architectural principles, and making thoughtful technical decisions that improve delivery throughput without compromising quality. Back-End Engineer who can ramp up quickly, collaborate effectively with the existing team, and begin contributing meaningful delivery outcomes within the first few weeks.
Full Stack Software Engineer Reinventing GeospatialFull Stack Software EngineerFairfax, VAWe may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. RGi provides opportunities, resources, training, and mentorship to all our employees to let them take control of their careers and become a leader or a crucial member of our company.
Software Engineer (Ai-Assisted Developer Tooling) Visionist, Inc.Software Engineer (Ai-Assisted Developer Tooling)Laurel, MD$170,000–$240,000 / yearWe embed small engineering teams with analysts to rapidly identify and solve mission capability gaps playing a critical role in defending our nation's cyber infrastructure & providing expertise in malware analysis, attribution, mapping adversarial infrastructure, pen testing, and operational planning. This premier program encompasses traditional software services including Systems Design and Engineering, Database Administration, Data Science and Knowledge Management, Enterprise Risk Management, Integration and Test, as well as Operations and Systems Support.
Principal Software Engineer Bigbear.aiPrincipal Software EngineerColumbia, MarylandFull timeEngineer will work closely with mission stakeholders to analyze software requirements, design innovative technical solutions, develop software applications, and implement high-performance capabilities supporting advanced mission objectives. About BigBear.ai: BigBear.ai is a leading provider of AI-powered decision intelligence solutions for national security, supply chain management, and digital identity.