Jobs at Leidos

This role bridges systems engineering and specialty risk/reliability/cybersecurity disciplines, requiring the candidate to conduct and integrate reliability analyses (FMEA, FTA, RBD), radiation effects assessments, and cybersecurity risk evaluations into a model-based systems engineering (MBSE) workflow. The engineer will develop and enforce risk management policies, design mitigation plans, and translate specialty findings into SysML models in Cameo Systems Modeler with full traceability from requirements through verification.…See more Strong emphasis on cross-functional collaboration, executive reporting, and alignment with industry standards (MIL-STD-785, NIST RMF) to support mission assurance and compliance.

This role combines risk management governance with specialty systems engineering (reliability, availability, radiation effects, cybersecurity) and model-based systems engineering (MBSE). The engineer will develop risk policies and mitigation strategies, conduct or facilitate reliability/availability/radiation/cybersecurity analyses, and translate these findings into SysML models in Cameo Systems Modeler for traceability and trade-study analysis.…See more The position requires cross-functional collaboration with program management, design engineering, and logistics to integrate specialty drivers into program baselines and compliance with standards like MIL-STD-785 and NIST RMF.

Sr. Systems Engineer supporting the Navy's Key Management project portfolio, leading system engineering, hardware, and software analysis to develop systems meeting customer requirements.…See more Responsibilities include defining and applying systems engineering processes, managing requirements through decomposition/allocation/verification/validation, developing system architecture and CONOPS, leading technical discussions, and writing comprehensive technical documentation. Requires 8+ years of experience with model-based systems engineering, database management (MySQL, Oracle, SQL Server), Linux/UNIX, Agile methodologies, and DoD 8570 security certification.

The successful candidate will develop web services, full-stack web applications, and persistence layers in an Agile Scrum environment, applying secure software development principles and clean coding practices aligned with S.O.L.I.D standards. Responsibilities include collaborating with software, systems, information assurance, test, and QA engineers while setting and driving adoption of Test Driven Development practices.…See more The role requires 4+ years of relevant experience with web technologies (HTML, CSS, JavaScript), UI frameworks (React, Angular, Ionic, Qt, etc.), automated testing tools (Selenium, Cucumber), and CI/CD tooling. An active Secret clearance is required, and DoD 8570 approved security certification (Security+) must be obtained within 90 days of hire.

Applications Software Engineer on a cybersecurity and cryptographic key management product suite, developing full-stack web applications and web services in an Agile Scrum environment. The role involves secure software development, test-driven development (TDD), continuous integration, and automated testing across tactical mobile and enterprise web platforms.…See more Requires 8+ years of relevant experience, an active Secret clearance, and expertise in web technologies (HTML, CSS, JavaScript), frameworks (React, Angular, Node.js), testing tools (Selenium, Cucumber), and DevOps/CI practices.

Applications Software Engineer responsible for full-stack web application and web service development in a cybersecurity and cryptographic key management context. The role involves building secure, maintainable code using clean coding practices and SOLID principles, with emphasis on Test-Driven Development and secure software development techniques.…See more Requires 8+ years of experience with web technologies (HTML, CSS, JavaScript), UI frameworks (React, Angular, Ionic, etc.), automated testing (Selenium, Cucumber), and Agile/Scrum methodologies, working collaboratively with engineers across multiple disciplines in a DevOps-enabled CI/CD environment.

Algorithm Software Engineer responsible for designing, implementing, and testing C applications in real-time embedded systems within multi-disciplinary teams. The role involves porting and optimizing signal processing algorithms from MATLAB, Python, or C++ to C for multi-core DSP applications, leveraging SIMD, VLIW, and hardware accelerators to meet real-time requirements.…See more Responsibilities include developing Hardware-in-the-Loop tests, optimizing code for performance, and communicating technical details with internal and external stakeholders. Requires 8+ years of embedded C/C++ development experience, strong signal processing knowledge, Linux proficiency, and active Secret-level security clearance with ability to obtain TS/SCI.

Embedded Software Engineer responsible for developing low-level C/C++ software for custom system-on-chip (SoC) hardware across DSP, ARM, and RISC-V microarchitectures. Will design and implement embedded systems ranging from bare metal to Linux environments, write hardware interface code, validate performance under nominal and stress conditions, and collaborate with multidisciplinary teams of firmware, hardware, and RF engineers.…See more Requires 4+ years of embedded systems development experience, strong C/C++ proficiency, understanding of hardware-software interaction, and familiarity with build tools, version control, CI/CD pipelines, and test-driven development.

Lead the full system development lifecycle for government programs, from requirements analysis and design through verification, validation, and sustainment. Manage requirements decomposition, allocation, and traceability; define system architecture and CONOPS using Model Based Systems Engineering (MBSE) methodologies; identify and mitigate technical risks associated with secure hardware; and produce comprehensive technical documentation.…See more Participate in customer meetings and technical interchanges; requires 12+ years of systems engineering experience, a Bachelor's degree in Systems Engineering or related field, and demonstrated expertise in requirements management, MBSE, the V-model, and Risk Management Framework (RMF) on medium-to-large DoD programs.

Software engineer contributing to design and development of advanced RF systems within multi-disciplinary teams. Responsibilities include designing and implementing object-oriented applications in Python/MATLAB, developing software to configure and control RF hardware, integrating low-level software with GUIs, creating Hardware-in-the-loop (HITL) tests, and building test frameworks.…See more Requires 4+ years of software development experience, strong Python/MATLAB/C++ skills, understanding of hardware-software interaction, experience with hardware interfaces and build tools, and an active Secret-level security clearance with ability to obtain TS/SCI.

As a Senior Systems Engineer, you will lead systems engineering activities across the full lifecycle—from requirements analysis and architecture development through integration, testing, deployment, and sustainment. You'll collaborate with product owners, scrum masters, and agile teams to translate mission needs into scalable, secure solutions using DevSecOps principles and modern engineering practices.…See more You'll perform systems decomposition, functional analysis, and traceability; coordinate integration across multiple teams; and drive performance assessments, risk mitigation, and compliance with Intelligence Community standards. This role requires 8+ years of systems engineering experience, a strong grasp of systems development lifecycle and Agile frameworks, and hands-on experience with geospatial intelligence programs, cloud platforms, and DevSecOps/CI/CD tooling.

Mid-career software engineer responsible for developing and integrating embedded firmware and software across Linux, NVIDIA Jetson, RTOS, and ROS 2 platforms. The role requires 5+ years of experience in embedded systems development with proficiency in C, version control (Git/Subversion), Linux command-line tools, and embedded communications protocols (SPI, RS-232, Ethernet).…See more Responsibilities include coordinating with the engineering group, anticipating design changes, prioritizing features and bug fixes, and testing/debugging complex embedded electro-mechanical systems. Preferred experience includes computer vision (OpenCV), DSP algorithms, robotics control modeling, MATLAB/Python, and test automation.

Design, implement, and optimize advanced algorithms for radar, optical, and infrared sensor systems, working with scientists and engineers to build high-performance backend systems for scientific computing in distributed environments. Translate existing code for GPU/CUDA acceleration, integrate and refactor scientific codebases, and work in Linux/Unix environments.…See more Requires 6+ years of C/C++ backend development (or 4+ with a Master's), expertise in high-performance computing, parallel/distributed processing (MPI), GPU/CUDA programming, and foundational knowledge of AI/ML and LLM concepts.

Technical Lead responsible for managing IT support operations, incident response, and data assurance on classified networks (NIPR/SIPR). Lead peer coaching and mentorship of standard technicians while managing ticket resolution, troubleshooting hardware/software/networking issues, and supporting VoIP/VTC systems.…See more Provide 24/7 operational support with independent decision-making on technical problems and customer escalations.

Design, deploy, and maintain virtualized Linux training environments for Navy simulation systems using KVM, libvirt, and Open vSwitch. Migrate services from tactical hardware to virtualized platforms, develop Python automation and Ansible playbooks for deployment and configuration, and troubleshoot complex integration issues across virtualization, networking, storage, and applications.…See more Support cybersecurity compliance activities including STIG implementation and RMF activities. Requires 4–8 years of experience with Linux systems engineering, virtualization, and platform engineering, or a Master's degree with 2–6 years relevant experience.

Leidos seeks a UI/UX Engineer to design user-centered mobile and touch-based interfaces for defense/naval applications. The role involves developing UX strategy across platforms, creating interactive prototypes, leading design execution, and collaborating with developers and product owners.…See more Requires 8+ years of experience with 5+ years specifically in mobile UX design, proficiency in tools like Sketch and Adobe Creative Suite, and a strong portfolio demonstrating complex problem-solving and high-quality design execution.

Lead systems engineering analysis and architecture development for the Navy's Key Management project portfolio. Define and apply systems engineering processes, manage requirements through decomposition/allocation/verification/validation, and develop system architecture, CONOPS, and use cases.…See more Produce technical documentation including specifications, design documents, and user guides. Requires 8+ years of experience with model-based systems engineering, database management (MySQL, Oracle, SQL Server), operating systems (Linux, UNIX), Agile methodologies, and software design patterns.

This role manages a large technical team supporting Navy-Marine Corps Intranet (NMCI) network operations under the SMIT contract. The engineer will lead field/base network operations including BAN/LAN/WAN troubleshooting, installation, configuration, cabling, and COMSEC support across DOD enterprise network environments.…See more Responsibilities include incident response, change management, problem management, and DevSecOps initiatives, with direct customer interaction and resource management. The position requires extensive operations/engineering leadership experience, solid network architecture knowledge, and hands-on proficiency in fault diagnosis, repair, and passive infrastructure work.

This Systems Engineer role oversees vehicle production operations for naval unmanned systems at NIWC, managing Master Production Schedules, vehicle configuration, quality assurance, and configuration management. The engineer will coordinate with industry partners on testing, procurement, and acceptance procedures; manage lab space, test equipment, and materials inventory; and serve as liaison between Engineering/R&D and Production teams.…See more The role requires 5+ years of relevant experience, a TOP SECRET clearance (with active SECRET required), and hands-on involvement in production environments including at-sea testing. Direct supervision of 1+ personnel is required, with responsibility for hiring, performance management, and HR decisions.

Lead a large technical team supporting Navy-Marine Corps Intranet (NMCI) operations under the SMIT contract, managing network infrastructure, incident response, change management, and O&M initiatives. Perform hands-on network engineering including troubleshooting, installation, configuration, cabling, and COMSEC support across BAN/LAN/WAN environments.…See more Analyze network architectures, diagnose faults, manage customer relationships, and execute projects in a fast-paced DOD enterprise network environment. Requires extensive operations/engineering leadership experience with network/transport technical background and DOD enterprise network knowledge.

Software Engineer supporting enterprise infrastructure solutions across mission-critical environments, with responsibility for designing and developing Python-based automation tools, GUI applications, and Bill of Materials integration capabilities. The role involves system lifecycle activities including design, development, integration, operations, and modernization, with collaboration across Government stakeholders and technical teams.…See more Requires six years of systems engineering and/or software engineering experience, expertise in Python automation, GUI development, and enterprise analytics platforms, plus knowledge of systems engineering lifecycle processes and ISO/IEC 15288 standards.

Develop, test, and deliver software and firmware for uncrewed underwater vehicles (UUVs), including designing embedded systems in C/C++, writing device drivers and communication protocols (SPI, I2C, UART), integrating sensors and hardware components, and conducting at-sea testing and validation. The role spans both embedded firmware development and hardware design, requiring hands-on prototyping, PCB work, lab testing with oscilloscopes and logic analyzers, and occasional travel for sea trials.…See more You will collaborate on component selection, system optimization, regression testing, and may operate UUV systems during evaluation.

Leidos seeks a Sensing Algorithm Engineer to research, develop, and implement novel algorithms for remote sensing applications. The role involves prototyping algorithms in Matlab or Python, implementing efficient C software, conducting performance testing and analysis, and documenting results for customers.…See more The ideal candidate has a BS/MS/PhD in physics, engineering, or mathematics with 4–8 years of experience, fluency in high-level languages, strong signal processing knowledge, and understanding of probability, statistics, linear algebra, and physics. The position requires an active Top Secret security clearance and full-time on-site work in San Diego, CA.

Leidos seeks a Site Reliability Data Engineer to design, build, and maintain scalable ETL/ELT pipelines and data solutions supporting the Navy-Marine Corps Intranet. The role combines SRE responsibilities—developing resilience tests, automated testing frameworks, and monitoring—with data engineering work: designing data models, implementing quality checks, troubleshooting failures, and ensuring secure data movement across hybrid cloud and on-premises environments.…See more You will work with SQL, Python, and approved technologies to create reusable data products, support platform migrations, and collaborate across cybersecurity, infrastructure, and business intelligence teams to meet service level objectives and operational requirements.

This Embedded Software Engineer role at Leidos involves designing and developing high-performance embedded software for custom System-on-Chip (SoC) hardware in electronic warfare applications. You will write low-level C/C++ code for multi-core systems (DSP, ARM, RISC-V), perform hardware-software co-design and validation, and build software development kits for end users.…See more The position requires 4+ years of embedded systems experience, deep understanding of hardware architectures, and proficiency in reading datasheets, test-driven development, and real-time operating systems.