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178 senior software engineer level 3 jobs found

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Lockheed Martin
Aug 18, 2026
Senior Software Engineer, Level 3
Lockheed Martin CO
Standard Job Description Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future.     At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity.   Join us in shaping a new era in space and find a career that's built for you.   Lockheed Martin Space is seeking a full time Software...
Lockheed Martin
Aug 07, 2026
Senior Software Engineer, Level 3 - Embedded - Clearance Required
Lockheed Martin Littleton, CO
Description: Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you. Space Protection Programs is seeking an experienced Software Engineer who can guide a...
Lockheed Martin
Aug 07, 2026
Senior Software Engineer, Level 3 - Clearance Required
Lockheed Martin Houston, TX
Description: Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you. Lockheed Martin Space is seeking a full time Software Engineer. In this role, you will...
Lockheed Martin
Jul 18, 2026
Senior Software Engineer, Level 3 - Clearance Required
Lockheed Martin Houston, TX
Description: Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you. Lockheed Martin Space is seeking a full time Software Engineer. In this role, you will...
Lockheed Martin
Jul 02, 2026
Senior Software Engineer - Level 3 (TS/SCI with Poly)
Lockheed Martin King of Prussia, PA
Description: Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you We're seeking a talented and motivated Senior Software Engineer to join our fast-paced...
Lockheed Martin
Jun 02, 2026
Senior Software Engineer - Level 3 (TS/SCI with Poly)
Lockheed Martin King of Prussia, PA
Description: Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you We're seeking a talented and motivated Senior Software Engineer to join our fast-paced...
Lockheed Martin
Jun 02, 2026
Senior Software Engineer, Level 3
Lockheed Martin Littleton, CO
Description: Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you. Space Protection Programs is seeking an experienced Software Engineer who can guide a...
Lockheed Martin
May 27, 2026
Senior Software Engineer, Level 3
Lockheed Martin Houston, TX
Description: Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you. Lockheed Martin Space is seeking a full time Software Engineer. In this role, you will...
Lockheed Martin
May 27, 2026
Senior Software Engineer, Level 3
Lockheed Martin Houston, TX
Description: Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you. Lockheed Martin Space is seeking a full time Software Engineer. In this role, you will...
Lockheed Martin
Jul 02, 2026
Senior Software Systems Engineer - Level 3
Lockheed Martin King of Prussia, PA
Description: Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re re-imagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you. The Software Systems Engineer will use Model-Based Systems Engineering (MBSE)...
Lockheed Martin
Jun 10, 2026
Software Quality Engineer Senior- Level 3
Lockheed Martin Fort Worth, TX
Description: In this position, you will be Responsible for implementing the Software Quality Engineering (SWQE) mission to ensure programs have and are compliant to documented processes which meet customer and company requirements and are capable of producing quality software products. The successful applicant will do this, with limited supervision, by performing process, product, supplier, special quality evaluations/audits, and test verification/validation oversight throughout the software development lifecycle as well as using quality sciences to identify, communicate and drive to resolution needed improvements to software development processes and activities. They will provide SWQE management with metrics, reports, schedules, Basis of Estimates (BOEs) for tasking and other support as necessary. SWQE will develop and deploy standard software quality procedures and quality engineering methods and instruments. They must be willing to travel, ability to work off-shift and...
SAIC
Nov 11, 2026
Senior Network Engineer
SAIC VA
Description SAIC is looking for a Senior Network Engineer to provide Tier 3 advanced engineering support for a mission-critical naval enterprise transport network, ensuring continuous availability, resilience, and scalability. This role serves as the highest level of operational escalation, responsible for diagnosing and resolving the most complex network issues, guiding Tier 2 personnel, improving network reliability, and contributing to long-term architectural direction. The engineer supports end-to-end network visibility, advanced troubleshooting, optimization, change control, and integration of new capabilities across a globally distributed environment. This position is onsite in Suffolk, VA. Primary Responsibilities: Serve as the Tier 3 engineering escalation point, handling complex outages and deep root-cause investigations. Perform advanced analysis of network performance, routing behavior, and security events using packet-level tools. Lead cross-functional...
SAIC
Nov 04, 2026
Microsoft System Administrator SME
SAIC MS
Description The Microsoft System Administrator - SME position will provide Windows engineering support administering and managing servers and systems, cloud infrastructure, file and print environments and specializing in Microsoft Windows server operating systems for DOT at the DR data center at the Stennis Space Center in Mississippi and will be responsible for building, patching, and troubleshooting Windows servers in support of current and future DOT systems and applications. This candidate will be working with a team of server engineers to troubleshoot issues for multiple systems in multiple datacenter locations. The Senior Windows Engineer will provide support, implementation, and design services for Windows-based systems across the enterprise. The candidate will be responsible for resolving and completing assigned tasks and change requests and will act as an escalation for support issues. The candidate will also be responsible for applying new solutions through...
LMI
Oct 29, 2026
Senior AI and Transformation Lead
LMI Washington, DC
Overview LMI is seeking a Senior AI and Transformation Lead who is a deep subject-matter expert and thought leader in the effective use of artificial intelligence. The individual will help guide PMOD’s AI strategy and adoption; bring broad experience designing and implementing AI solutions for government customers; identify high-value AI opportunities; and educate stakeholders on AI capabilities, functionality, risks, and practical applications.  The individual should also have a strong understanding of AI activities and capabilities across CBP, including the roles and efforts of relevant offices. They must be able to collaborate effectively across CBP and remain current on applicable AI guidance, governance processes, procedures, and implementation requirements. This position requires U.S. citizenship and the ability to obtain a CBP Background Investigation (BI) is required; active CBP BI preferred.   LMI is a new breed of digital solutions provider...
SAIC
Oct 28, 2026
IT Integrator
SAIC VA
Description Join a mission driven satellite program at the forefront of national defense innovation. Our team is developing cutting edge technologies that directly support critical Department of War priorities, combining both proven and first-of-their-kind capabilities that have never been applied in space. Operating within a fast-paced acquisition environment, we benefit from streamlined authorities and direct access to senior Government decisionmakers, enabling us to move quickly and execute aggressive schedules using the most innovative contracting strategies available. SAIC is seeking self-directed leaders who skillfully navigate ambiguity, solve complex challenges, and bring diverse expertise to a dynamic environment focused on delivering capability rapidly. Success here requires adaptability, initiative, and a willingness to wear multiple hats in support of a high impact mission. Candidates experienced as USAF/USSF acquisition officers (AFSC: 63A), USAF/USSF civil...
SAIC
Oct 28, 2026
Senior SailPoint Systems Engineer
SAIC DC
Description As a SailPoint Senior Systems Engineer, you'll play a key role in enhancing our cybersecurity and identity management capabilities. You'll coordinate with external stakeholders, including DHS CISA integrators, to implement the Identity Lifecycle Management (ILM)/Mandatory User Re-Authentication (MUR) solutions at the Department of Transportation (DOT). This involves integrating DOT's SailPoint infrastructure with the ServiceNow environment and maintaining the ILM solution across development, testing, and production environments. Your responsibilities will also include supporting ILM workflows for Privileged Account Management (PAM) tools and Active Directory (AD), building new system connections, and maintaining Continuous Diagnostics and Mitigation (CDM) Dashboard integrations. You'll be responsible for deploying software updates, reporting on SailPoint IdentityIQ operations, and supporting the identification and remediation of security vulnerabilities. This...
SAIC
Oct 28, 2026
Mid-Level CyberArk Engineer
SAIC DC
Description Step into the role of a Mid-Level CyberArk Engineer, where you will play a crucial supporting role in enhancing the Department of Transportation's (DOT) cybersecurity infrastructure. Working alongside senior engineers, you'll contribute to the deployment and ongoing maintenance of a sophisticated Privileged Access Management (PAM) solution. This role will see you engaging with key stakeholders, including DHS CISA integrators, to ensure the PAM system operates flawlessly across development, testing, and production environments. Your daily responsibilities will involve assisting with the management of roles and safes, helping deploy software updates, and contributing to the preparation of reports that highlight the performance and security of the PAM tool. Additionally, you'll be involved in identifying and mitigating security vulnerabilities, providing essential support for on-call troubleshooting and remediation efforts related to the PAM solution. You'll also...
SAIC
Oct 28, 2026
PKI Systems Engineer
SAIC VA
Description The Enterprise & Mission Solution Business Unit currently has an opening for a Public Key Infrastructure (PKI) Systems Engineer to support the Department of State (DoS) Bureau of Diplomatic Technology (DT) PKI program. This program provides transparent security services in support of the Department's goals to secure communications among Department staff and systems. The position falls under the "Vanguard 2.2.1" contract. This is a senior-level PKI engineering position within the Vanguard 2.2.1 program's Enterprise Engineering Office (EEO), providing PKI engineering and integration support, administering, maintaining, and deploying various PKI systems based on Entrust solutions, onsite at the various DoS Datacenters and at certain selected DoS domestic and overseas locations. The preferred candidate must possess strong skills in designing, installing, configuring, and maintaining PKI systems. Additionally the preferred candidate should have some experience in...
Odyssey Systems Consulting Group
Oct 27, 2026
Full time
Air Battle Management Test Engineer SE-4
Odyssey Systems Consulting Group Niceville, FL
Position Summary Odyssey has an exciting opportunity for an SE‑4 Air Battle Management (ABM) Test Engineer supporting the 45th Test Squadron, Air Operations C2 Systems Test Flight (45 TS/TGAA) at Eglin AFB, FL. This senior‑level engineer will plan, execute, analyze, and report on developmental and operational test activities supporting next‑generation C2, JADC2, and ABMS capabilities. The role requires deep operational ABM expertise and the ability to translate mission workflows into testable objectives within complex multi‑domain architectures.   This is a full‑time position at Eglin AFB, FL, with up to 25% CONUS/OCONUS travel. Responsibilities Duties include, but not limited to:  Lead planning, execution, and analysis of developmental tests for next‑generation C2, JADC2, and ABMS systems Conduct data analysis and apply engineering knowledge across test and evaluation, logistics, sustainment, operations...
SAIC
Oct 21, 2026
Systems Network Engineer II
SAIC CA
Description SAIC seeking a Systems Network Engineer II to support the design, configuration, integration, and sustainment of secure network infrastructure supporting distributed computing, cloud, and software environments. This mid-level role will work across on-premises lab and test environments, cloud infrastructure, and distributed computing platforms to maintain reliable and secure connectivity. The candidate will collaborate with network engineers, cloud and platform teams, cybersecurity personnel, software developers, and other technical stakeholders to troubleshoot network issues, maintain network documentation, implement access controls, and support emerging capabilities. The ideal candidate possesses strong foundational networking skills, hands-on troubleshooting experience, and an interest in expanding their expertise across cloud networking, containerized environments, network automation, and modern infrastructure technologies. THIS IS AN ONSITE ROLE IN SAN DIEGO,...
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