Software Engineer 3 – AI/ML CTRL + LLCSoftware Engineer 3 – AI/MLAnnapolis Junction, MDThe team will also address challenges related to infrastructure provisioning and cloud migration within a hybrid, multi-cloud environment (e.g., VMware, AWS & Azure), Cyber Threat Intelligence, DevOps, and Containerization & Orchestration. The ideal candidate will be responsible for designing and developing robust software solutions that leverage ML and AI techniques to enhance cyber defense and cyber intelligence solutions.
Software Reverse Engineer Percival EngineeringSoftware Reverse EngineerColumbia, MDAssignment includes developing software designs from requirements, implementing these designs in code, developing unit test cases, and supporting integrated software code with the team for builds/integration tests. Design, develop, test, and integrate software for advanced cybersecurity capabilities using the latest software tools and techniques such as Python, C, C++, and other languages and frameworks.
Software Engineer, Rust HelsingSoftware Engineer, RustWashingtonPlease do not submit personal data revealing racial or ethnic origin, political opinions, religious or philosophical beliefs, trade union membership, data concerning your health, or data concerning your sexual orientation. You don't need to be a drone expert — but you should be a strong systems programmer who thrives in low-latency, high-reliability environments and is excited to apply those skills to a mission-critical product.
Principal Software Engineer HireFitPrincipal Software EngineerAnnapolis, MarylandWe're in search of a highly adept Principal Software Engineer to lead and guide our team of software engineers in crafting intricate software systems. Proven leadership and team management abilities, including experience leading software engineering teams.
Software Engineer, Entry Level (AE26041218SWE0U) GTSC-Talent SolutionsSoftware Engineer, Entry Level (AE26041218SWE0U)Hanover, MarylandRemoteIf no degree: four (4) years of additional SWE experience on projects with similar software processes may be substituted for a bachelor's degree. Bachelor's degree in Computer Science or related discipline from an accredited college or university is required.
Software Engineer Level 3 Invictus Strategy & SolutionsSoftware Engineer Level 3MarylandInvictus is seeking a Software Engineer Level 3 to design, develop, and enhance complex software systems in Annapolis Junction, Maryland, supporting data intensive and mission driven operations within secure environments. From cleared federal programs to complex cybersecurity and infrastructure initiatives, we deliver top tier professionals who support secure environments, operational resilience, and mission success.
CNO Python Software Engineer (AE26011431U) GTSC-Talent SolutionsCNO Python Software Engineer (AE26011431U)Hanover, MarylandRemoteDesign and develop new bleeding edge software, leveraging your knowledge in programming and coding with Python to solve challenging problems and create the best solutions. Work with the entire Software Development Lifecycle, including planning, requirements analysis, designing, developing, testing and deployment of new or improved CNO Capabilities.
Software Engineer in Test – C# / WPF CaseGuardSoftware Engineer in Test – C# / WPFArlington, VAHands-on experience writing and maintaining unit tests and integration tests using frameworks such as MSTest, NUnit or xUnit. Our team is driven by a passion for great software design, creating great products, and creative processes; CaseGuard implements innovative ideas across multiple services and agencies.
Principal Software Engineer CVS Health CorpPrincipal Software EngineerDC$144,200–$288,400 / yearOperating as both a senior individual contributor and technical leader, you will partner closely with product, architecture, and engineering leadership to make pragmatic, high‑impact design decisions that balance speed, quality, and long‑term maintainability. Partner with teams and serve as subject matter expert to provide benchmarked solutions to multiple, complex technical projects/initiatives within own area of expertise and organize cross-departmental application architectural solutions.
Software Engineer II DOT NET Developer CbSoftware Engineer II DOT NET DeveloperWashington, District of Columbia$75,000–$85,000 / yearPosition: Software Engineer II (.NET Developer) Position Type: Full-Time Time-Onsite L ocation : Washington, D.C Role Specific Duties/ Role Responsibilities: Plan, design, build, test, deploy, and maintain highly scalable web-based services utilizing modern. Additional Requirements as per contract/client (Optional or Preferred): Candidates must be a US Citizen or a Legal Permanent Resident (Green Card status) for 3 years and be Federal Tax compliant.
Principal Software Engineer - ARINCDirect Core Platform (Onsite) RTX CorpPrincipal Software Engineer - ARINCDirect Core Platform (Onsite)Annapolis, MDQualifications You Must Have: Typically requires a degree in Science, Technology, Engineering, or Mathematics (STEM) and minimum 8 years of relevant experience, or an advanced degree and 5 years of experience, or in absence of a degree, 12 years of relevant experience. ARINCDirect, part of the Connected Aviation Solutions unit of Collins Aerospace, provides planning, scheduling, and connectivity solutions that empower thousands of aircraft operations every day.
Full Stack Software Engineer III w/ TS/SCI Polygraph Deloitte Touche Tohmatsu LtdFull Stack Software Engineer III w/ TS/SCI PolygraphBaltimore, MD$119,000–$198,400 / yearDeloitte's Government & Public Services practice brings together people, ideas, technology, and outcomes to help federal, state, and local government clients and public higher education institutions address complex challenges and advance their missions. This compensation range is specific to Maryland and takes into account the wide range of factors that are considered in making compensation decisions including but not limited to skill sets; experience and training; licensure and certifications; and other business and organizational needs.
Cloud Software Engineer Halcyon Days ConsultingCloud Software EngineerMarylandHDC is seeking a Cloud Software Engineer who will be responsible for designing and implementing advanced functions of Microsoft Office 365 and/or Azure AD premium, including security, governance, and compliance. Halcyon Days Consulting, LLC (HDC) is a veteran owned small business that specializes in the design and engineering of Tactical Mission Networks (TMN).
Data & Software Engineer NewGen TechnologiesData & Software EngineerMcLean, VirginiaSuccessful candidate will have advanced Python programming skills, familiarity with Java, an understanding of data security, privacy, governance and compliance principles and a demonstrated history of building production data pipelines and ETL workflows at scale. Experience integrating Al/ML services and models (translation, OCR, speech-to-text, NLP, language detection, topic modeling), LLMs, and RAG {retrieval-augmented generation) pipelines.
Sr. Software Development Engineer - Veridix AI Emmes GroupSr. Software Development Engineer - Veridix AIRockvilleRemoteFull timeWith industry-leading capabilities in cell and gene therapy, vaccines, infectious diseases, and ophthalmology, Emmes is one of the top clinical service providers to the U.S. government and is rapidly expanding its presence in biopharma. Our “Character Achieves Results” culture is driven by five key values that guide our actions in the way we conduct research and distinguish us as an organization: Integrity, Agility, Passion for Excellence, Collaborative Partnerships and Intellectual Curiosity .
Senior Lead Software Engineer, Back End (GraphDB & API Platform) (Enterprise Platforms Technology) Capital One Financial CorpSenior Lead Software Engineer, Back End (GraphDB & API Platform) (Enterprise Platforms Technology)McLean, VA$229,900–$262,400 / yearThe Senior Lead will work across current and future-state architectures, helping establish patterns that enable applications and consumers to interact consistently with customer data and relationship capabilities as the underlying technology ecosystem evolves. This role will help lead the design and delivery of scalable APIs, data contracts, self-service capabilities, and cloud-native platform services that integrate with multiple underlying data technologies.
Senior Lead Software Engineer, Full Stack (Global Payment Network) Capital One Financial CorpSenior Lead Software Engineer, Full Stack (Global Payment Network)McLean, VA$209,000–$238,500 / yearUtilize programming languages like JavaScript, Java, HTML/CSS, TypeScript, SQL, Python, and Go, Open Source RDBMS and NoSQL databases, Container Orchestration services including Docker and Kubernetes, and a variety of AWS tools and services. Share your passion for staying on top of tech trends, experimenting with and learning new technologies, participating in internal & external technology communities, mentoring other members of the engineering community, and from time to time, be asked to code or evaluate code.
Lead Software Engineer, Data Protection Capital One Financial CorpLead Software Engineer, Data ProtectionMcLean, VA$197,300–$225,100 / yearUtilize programming languages like Go, Python, TypeScript, and SQL, schema validation systems including CUE and JSON Schema, Open Source RDBMS and NoSQL databases (PostgreSQL/Aurora), Container Orchestration services including Docker and ECS Fargate, and a variety of AWS tools and services including Lambda, Step Functions, EventBridge, and CDK. Lead the design and build of platform services that centralize how data protection policies are authored, how findings are routed and scored, and how enforcement is applied across the DLP program, working in vertical slices that span schema, API, deployment automation, and production validation to create solutions that help meet regulatory needs for the company.
Lead Software Engineer, Back End (Java/ Python/ Go Backend, REST/ GraphQL APIs, WAF, HTTP Protocol, AWS) Capital One Financial CorpLead Software Engineer, Back End (Java/ Python/ Go Backend, REST/ GraphQL APIs, WAF, HTTP Protocol, AWS)McLean, VA$197,300–$225,100 / yearWhat You'll Do: Design, build, and operate edge network security infrastructure including WAF rule sets, bot protection services, and traffic inspection pipelines that defend Capital One's applications at scale. Stay current with the WAF, bot protection, and cloud security landscape - experimenting with new capabilities, contributing to internal security communities, and sharing knowledge across engineering teams.
IoT / Edge Software Engineer NTT DATA Group CorpIoT / Edge Software EngineerBethesda, MD$68,076–$141,826 / yearThe engineer works closely with system architects, backend/API engineers, and operational stakeholders to ensure that edge software components support real-time dosimeter data ingestion, device management, firmware updates, and operational status monitoring in compliance with cybersecurity and privacy requirements. Job Summary: The IoT Edge Software Engineer is responsible for the design, development, deployment, and maintenance of edge software components that enable secure, reliable, and scalable integration between field-deployed dosimeter devices, gateways, and cloud environment.
Senior Software Integration Engineer - 725 Freedom Technology Solutions GroupSenior Software Integration Engineer - 725Annapolis JunctionWorking alongside experts in software engineering, cloud computing, DevSecOps, systems engineering, user experience, and enterprise platforms, you'll help modernize legacy systems, automate business processes, integrate commercial technologies, and deliver innovate solutions that improve efficiency, reduce costs, and enhance the user experience. Responsibilities include implementing and customizing COTS solutions, developing and enhancing GOTS applications, troubleshooting complex production issues, supporting cloud migration and modernization initiatives, and delivering innovative technical solutions that improve mission effectiveness.
Lead Software Engineer, Android (Kotlin & Jetpack Compose) Capital One Financial CorpLead Software Engineer, Android (Kotlin & Jetpack Compose)McLean, VA$197,300–$225,100 / yearPartner with Software Engineers, UX/UI, Quality Engineers, Product Owners/Analysts to deliver high performing quality customer experiences that are engaging, purposeful and powerful in their simplicity. Candidates hired to work in other locations will be subject to the pay range associated with that location, and the actual annualized salary amount offered to any candidate at the time of hire will be reflected solely in the candidate's offer letter.
Cloud Software Engineer (Remote) Tactibit Technologies LLCCloud Software Engineer (Remote)Silver Spring, MDRemoteYou will support National Ocean and Atmospheric Administration's (NOAA) cloud initiatives includes services deemed mission critical that ingest, process, disseminate, and store petabytes of environmental data collected from satellites daily. Act as a subject matter expert for end-to-end cloud systems engineering including identifying cloud providers, networking, provisioning, and management/governance.
NewRF Systems and Satellite Communications Engineer Johns Hopkins Applied Physics Laboratory (APL)RF Systems and Satellite Communications EngineerLaurel, MD$105,000–$290,000You will work with mission and spacecraft systems engineers, peer subsystem engineers and project management in overall mission development and execution from concept to launch, including technical concept design, requirements,development phases, technical reviews, budget development and schedule. You will perform conceptual systems design, simulation, link analysis, hardware trade studies, technical tradeoffs, and costing for satellite communications and RF system design concepts for both space and ground segments.
Public Notice for Computer Engineer (Direct Hire) U.S. Department of TransportationPublic Notice for Computer Engineer (Direct Hire)DC$53,528–$173,980 / yearSpecified academic courses -- Successful completion of at least 60 semester hours of courses in the physical, mathematical, and engineering sciences and that included the courses specified in the basic requirements under paragraph A. The courses must be fully acceptable toward meeting the requirements of an engineering program as described in paragraph A. Related curriculum -- Successful completion of a curriculum leading to a bachelors degree in an appropriate scientific field, e.g., engineering technology, physics, chemistry, architecture, computer science, mathematics, hydrology, or geology, may be accepted in lieu of a bachelor's degree in engineering, provided the applicant has had at least 1 year of professional engineering experience acquired under professional engineering supervision and guidance. Specialized Experience* may include but not limited to: experience as a consultant and expert in electronic information systems and systems engineering processes involving integration, testing and quality assurance; leading investigations to resolve unusual and controversial problems relating to the interface and integration requirements for a broad range of existing and new electronic information systems/equipment; and evaluating the feasibility of new technology and state-of-the-art equipment for incorporation into existing NAS systems & equipment.
Cloud Native Software Engineer (Annapolis Junction, MD) Shield Consulting SolutionsCloud Native Software Engineer (Annapolis Junction, MD)Annapolis Junction, MD$205,000–$215,000 / yearJob Description:The Software Engineer shall be responsible for collaborating with Product Owners, System Engineers, and Project Software Engineers to design, develop, test, troubleshoot, and sustain a mission-focused enterprise web application deployed in a containerized Kubernetes Linux environment. Bachelor’s degree in a technical discipline2 additional years of experience as a software engineer may be substituted for a degree.
Cloud Native Software Engineer Shield Consulting SolutionsCloud Native Software EngineerAnnapolis Junction, MD$205,000–$215,000 / yearJob Description: The Software Engineer shall be responsible for collaborating with Product Owners, System Engineers, and Project Software Engineers to design, develop, test, troubleshoot, and sustain a mission-focused enterprise web application deployed in a containerized Kubernetes Linux environment. Bachelor’s degree in a technical discipline 2 additional years of experience as a software engineer may be substituted for a degree.
Principal Software Engineer - Backend Dragos IncPrincipal Software Engineer - BackendDCRemoteStay informed about the latest advancements in Rust programming, security, and software design principles, helping to foster an environment of continuous learning and improvement. Our backend community is the heartbeat of the Dragos Platform, playing a pivotal role in the success of our customers' ability to secure their OT environments.
Java Software Engineer Level 2 or 3 Northrop Grumman CorpJava Software Engineer Level 2 or 3Linthicum, MD$91,800–$137,600 / yearAbout our organization: As an engineer, you'll be joining our growing Aurora Software department which has 200+ Software Engineer, DevOps Engineer, Systems Administrator, Database Administrator, and Network Engineer peers from entry-level to the most senior chief engineers and architects. The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate''s experience, education, skills and current market conditions.
IoT / Edge Software Engineer NTT DATA Services, LLCIoT / Edge Software EngineerBethesda, MD$68,076–$141,826 / yearThe engineer works closely with system architects, backend/API engineers, and operational stakeholders to ensure that edge software components support real-time dosimeter data ingestion, device management, firmware updates, and operational status monitoring in compliance with cybersecurity and privacy requirements. Job Summary: The IoT Edge Software Engineer is responsible for the design, development, deployment, and maintenance of edge software components that enable secure, reliable, and scalable integration between field-deployed dosimeter devices, gateways, and cloud environment.
Software Engineer (Level 2)- TS/SCI POLY Staffed4USoftware Engineer (Level 2)- TS/SCI POLYAnnapolis Junction, MarylandThis role supports complex software development efforts across programs of similar scope, type, and complexity, and requires deep experience with Java-based architectures, analytics frameworks, and enterprise DevSecOps tooling. The ideal candidate will bring strong technical expertise, familiarity with intelligence community analytic processes, and the ability to operate independently in a fast-paced, secure mission environment.
Sr Software Engineer StratAcuity Staffing Partners IncSr Software EngineerMerrifield, VA$60–$75 / hourIn terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts.
Software Engineer (Level 3)- TS/SCI POLY Staffed4USoftware Engineer (Level 3)- TS/SCI POLYAnnapolis Junction, MarylandThis role supports programs of significant scope and complexity and requires deep expertise in modern Java-based microservices, containerized architectures, and system observability. This position includes a competitive and flexible benefits package, including: Paid Time Off: PTO accrues at a rate of 13% of hours worked, which equals approximately 6 weeks, or 30 days, per year for a typical full-time employee.
Data Software Engineer (Annapolis Junction, MD) Shield Consulting SolutionsData Software Engineer (Annapolis Junction, MD)Annapolis Junction, MD$220,000–$230,000 / yearBachelor’s degree in a technical discipline4 additional years of experience as a software engineer may be substituted for a degree. Disclaimer: The salary range provided is an estimate based on current market conditions and may be adjusted based on factors such as experience, skills, and qualifications.
Cloud Software Engineer Booz Allen Hamilton IncCloud Software EngineerFort Meade, MD$112,800–$257,000 / yearOnsite: If this position is listed as onsite, work will primarily be performed at a Booz Allen office or customer facility, where employees will collaborate directly with colleagues and customers as required by the role. Salary at Booz Allen is determined by various factors, including but not limited to location, the individual's particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements.
AI Security Software Engineer Carnegie Mellon UniversityAI Security Software EngineerArlington, VAArtificial Intelligence Security Software Engineers at the SEI use software and machine learning engineering practices, data processing, and data analytics to help our researchers solve AI security challenges. BS in computer science, machine learning, cybersecurity, statistics, or related discipline with eight (8) years of experience; OR MS in the same fields with five (5) years of experience; OR PhD in the same fields with two (2) years of experience.
Sr. Software Engineer - Mixed Portfolio Foundation AppFolio IncSr. Software Engineer - Mixed Portfolio FoundationWashington DC, DC$138,400–$173,000 / yearDevelop scalable, robust, and simple web-based solutions to solve complex business problems - this will involve some combination of leveraging our existing technology, refactoring, integrating with partners, or starting from scratch when it makes sense. This is an ideal opportunity for someone who has a passion for building leading-edge software and solving problems with long term solutions in order to build a scalable successful SaaS product used by thousands of happy businesses.
2026 PhD Graduate - Formal Verification and Software Assurance Engineer Johns Hopkins Applied Physics Laboratory2026 PhD Graduate - Formal Verification and Software Assurance EngineerLaurel, MarylandFull timeExperience with (1) Static Analysis tools such as Coverity and Klockwork, (2) Dynamic Analysis tools such as Valgrind, libFuzzer, and Java Pathfinder, (3) Symbolic Execution Engines such as KLEE and angr, (4) Model Checkers such as TLA+ and SPIN, (5) SMT Solvers such as CVC5 and MathSAT (6) Automated Theorem Provers such as Z3 and ACL-2, (7) Interactive Theorem Provers such as Lean and Rocq, and any other formal methods tools. Understanding or experience with formal methods tools and techniques, such as language safety properties, symbolic execution, abstract interpretation, model checking, automated and interactive theorem proving, programming language analysis and design, type theory, static source code analysis, and formal logic.
Test Automation Software Engineer Booz Allen HamiltonTest Automation Software EngineerMcLean, VirginiaOnsite : If this position is listed as onsite, work will primarily be performed at a Booz Allen office or customer facility, where employees will collaborate directly with colleagues and customers as required by the role. Salary at Booz Allen is determined by various factors, including but not limited to location, the individual’s particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements.
Senior Software Engineer (SWE-3) LeidosSenior Software Engineer (SWE-3)MarylandThe software engineer will work closely with data scientists and end users to develop innovative analytic tools to further discovery and tradecraft around critical global challenges, then deliver innovative solutions focused on operationalizing data science. Mission Focus : Work directly with data scientists as well as mission analysts to solve the most demanding strategic problems; perform end-to-end software engineering to prototype, develop, integrate, test, and deploy tools and tradecraft into the customer’s corporate architecture.
Software Engineer 0 Reflexive ConceptsSoftware Engineer 0Annapolis Junction, MarylandProvides 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. The Software Engineer develops, maintains, and enhances complex and diverse software systems (e.g., processing-intensive analytics, novel algorithm development, manipulation of extremely large data sets, real-time systems, and business management information systems) based upon documented requirements.
ME00518-Mid-Senior Software Engineer Momentum Engineering OpeningsME00518-Mid-Senior Software EngineerAnnapolis JunctionThe individual will provide software process management and control throughout the coding portion of the software development process and will promote code reuse and cross-program collaboration while reducing maintenance costs by creating common functions and shared actions for developers and testers. Must have experience or familiarity with multiple Java frameworks: Spring to include Boot and Data, Java Enterprise Edition (JEE) (i.e., JPA, EJB, JTA, Servlet), Jackson, Jersey, Swing, JavaFX.
Software Engineer TS/SCI Poly LeidosSoftware Engineer TS/SCI PolyAnnapolis Junction, MarylandYou will provide software process management and control throughout the coding portion of the software development process and will promote code reuse and cross-program collaboration while reducing maintenance costs by creating common functions and shared actions for developers and testers. Must have experience or familiarity with multiple Java frameworks: Spring to include Boot and Data, Java Enterprise Edition (JEE) (i.e., JPA, EJB, JTA, Servlet), Jackson, Jersey, Swing, JavaFX.
Software Engineer, Senior Booz Allen HamiltonSoftware Engineer, SeniorMcLean, VirginiaWe're looking for a passionate, full-stack software engineer to work with a fast-paced, highly collaborative software development team building and launching capability for Enterprise web-based systems in the Cybersecurity field. Onsite : If this position is listed as onsite, work will primarily be performed at a Booz Allen office or customer facility, where employees will collaborate directly with colleagues and customers as required by the role.
Full Stack Software Engineer, Mid Booz Allen HamiltonFull Stack Software Engineer, MidArlington, VirginiaOnsite : If this position is listed as onsite, work will primarily be performed at a Booz Allen office or customer facility, where employees will collaborate directly with colleagues and customers as required by the role. 3+ years of experience with React, Leaflet, D3, JavaScript, Python, Java, Node.js, SQL, Server-Side Development, Middleware, Application or Data Integration, API Development, or Core Application Systems.
Jr. Software Engineer LeidosJr. Software EngineerBethesda, MarylandAs a Software Engineer on this program, you will have the opportunity to perform the software engineering function, including the design, development, testing, troubleshooting, and debugging of software programs for enhancements and new software-intensive systems and products. Support the Agile software development lifecycle following SAFe practices, using industry leading DevOps tools like GitHub, Jenkins, Unix bash scripting and leveraging tools such as JIRA and Confluence to track activities.
AWS Geospatial Software Engineer Booz Allen HamiltonAWS Geospatial Software EngineerSpringfield, Virginia3+ years of experience with AWS services and cloud-native architecture patterns, including ECS/EKS, Lambda, SQS, SNS, EC2, RDS, DynamoDB, IAM policies, security groups, and network security. Onsite : If this position is listed as onsite, work will primarily be performed at a Booz Allen office or customer facility, where employees will collaborate directly with colleagues and customers as required by the role.
Software Engineer (SWE-2) LeidosSoftware Engineer (SWE-2)MarylandMission Focus : Work directly with Marine Corps Forces Cyberspace Command (MFCC), the Cyber Mission Force (CMF), as well as software engineers to solve the most demanding strategic problems; perform end-to-end software engineering to develop, integrate, test, and deploy tools and tradecraft into the customer’s corporate architecture. The software engineer will work closely with engineers and end users to support in research and development of software products designed to exploit vulnerabilities of adversary technology, develop and optimize algorithms, author scripts and develop utility software.
ME00539-Software Engineer 3 Momentum Engineering OpeningsME00539-Software Engineer 3Annapolis JunctionSeeking a skilled Software Engineer to design, develop, test, and maintain software applications supporting mission-critical systems. Experience with continuous integration and continuous delivery principles and tools such as GitLab CI and ArgoCD.
Software Test Engineer TS/SCI Polygraph LeidosSoftware Test Engineer TS/SCI PolygraphHanover, MarylandOur ideal candidate will design, execute, and document manuals and automated tests; develop test cases and automation frameworks; identify and track defects; analyze performance and system behavior; and perform continuous functional, integration, acceptance, and regression testing to ensure quality and backward compatibility. May 6, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.