24 senior software systems engineer jobs found

ECS is seeking a Junior Software Engineer Intern to work in our Fairfax, VA office for the summer of 2026. This internship offers a unique opportunity to move beyond the classroom and gain firsthand experience with production-grade workflows and real-world datasets. You will work alongside senior engineers and scientists to move models from research to the tactical edge, ensuring from end to end, both our warfighters & decision makers are empowered with the latest technology solutions at their fingertips. Job Description: ECS is seeking a Junior Software Engineer to participate in a team of scientists and engineers, and to support the execution of a variety of projects including Artificial Intelligence/Machine Learning and Big Data/Cloud Solutions. The candidate works closely with the Project Manager and technical team to swiftly develop solutions in an agile environment and deploy capabilities to the operational end user. The candidate cultivates an environment...

Description SAIC is searching for a motivated, career and customer-oriented Senior Database Engineer who performs high-level, day-to-day software testing solutions to join our team and begin an exciting and challenging career. This is a 100% Remote role. Responsibilities: Establishes database management systems, standards, requirements, guidelines and quality assurance for database deliverables, such as conceptual design and architecture, logical database, capacity planning, external data interface specification, data loading plan, data maintenance plan and security policy. Works with clients to translate business requirements into a logical model that will accurately support and represent the client s entity relationship and flow of data. Develops the appropriate database framework to convert the logical model into a physical model including the creation and maintenance of schemas containing windows, screens, tables and columns and reports that support the model; and...

ECS is seeking a Systems Engineer Senior to work in our Winchester, VA office. Please Note: This position is contingent upon contract award. Supervise, coordinate and/or perform additions and changes to network hardware and operating systems, and attached devices, including investigation, analysis, recommendation, configuration, installation, and testing of new network hardware and software. Provide direct support in the day-to-day operations on network hardware and operating systems including the evaluation of system utilization, monitoring response time and primary support for detection and correction of operational problems. Troubleshoot at the physical level of the network, working with network measurement hardware and software, as well as physical checking and testing of hardware devices at the logical level working with communication protocols. Participate in planning design, technical review and implementation for new network infrastructure hardware and...

Description This is an opening for a Senior Network Engineer to support the Department of State's (DoS) Diplomatic Technology Operations Division. This program provides transparent, interconnected systems and security supporting the DoS in successfully carrying out U.S. foreign policy missions worldwide. The Operations Division provides enterprise operations and maintenance support worldwide. SAIC's program is named "Vanguard" and is an IT consolidation consisting of the Department's data center, cloud, domestic and foreign network switch, routers and WAN devices. Currently, the role is three days onsite and 2 days remote in Springfield, VA. Typically M-F 0830-1700. (Hour's dependent on mission priorities to include potential on-call). Description of Duties: Evaluates, designs, documents, implements, validation testing, and performs problem isolation and resolution, and performance monitoring, tunes, sets standards and maintains a range of network components and...

Description SAIC is looking for a Senior VMware Engineer. This position is in support of the Department of State (DOS) as a part of the Vanguard 2.2.1 contract. The Vanguard 2.2.1 program provides transparent, interconnected systems and security support for the Department of State (DOS) DT program. The DT program enables the Department of State to successfully carry out its foreign policy mission by providing enterprise architecture design, engineering, operations and maintenance support services for data center services, desktop computers, servers, networks, firewalls, voice and data communications and other unique enterprise applications. The candidate will be responsible for the development of Virtualization solutions utilizing VMWare and Storage technologies. The candidate will research, analyze, evaluate and integrate as necessary new and emerging technologies in order to find ways to deliver a superior IT environment to the bureaus in a cost effective and secure manner....

Clearance Requirement: Ability to obtain and maintain a Secret Clearance Travel Requirements: None Location: Norfolk, VA SUMMARY: WR has an opportunity for a Software Engineer to support the GBS division by providing software development, computer systems, and lab support. This is an entry-level role working under the guidance of senior engineers, contributing to software development, testing, and system support activities. Position responsibilities will include, but are not limited to the following: Assist engineering staff with daily lab operations, test data collection, and general technical support tasks. Work under the direct technical supervision of senior personnel to complete assigned tasks. Support the analysis, definition, and documentation of requirements, including data flow, workflows, system interfaces, and outputs. Assist in developing plans, schedules, and tasking for software development activities. Participate in client...

Overview SCCI is seeking a Senior Software Engineer to join our team in support of a high-performing DoD acquisition program. The successful candidate will provide software engineering technical support, and mentor junior and mid-level software engineers. In this position your work will have a great impact on the program's overall mission in providing support to the Department of Defense. This position is available for immediate hire and is located in Dahlgren, VA . SCCI offers a comprehensive and competitive benefits package including Health, Dental, Vision, Life and Disability benefits, 401k with Company Match, time off consisting of 2 weeks of paid vacation, 48 hours of sick/personal leave, and 11 paid Holidays. Responsibilities: Provide Software Engineering technical support Provide mentorship for Junior - Mid level Software Engineers Support software engineering code-design reviews Perform requirements assessments and requirements...

Description SAIC is seeking GEOINT Systems Engineer to support SAIC's Prime Program, Landmark AOS in Chantilly, VA. Landmark AOS is a large SETA program, supporting the NRO's Ground Enterprise Directorate (GED), responsible for the acquisition of systems over the complete end-to-end life cycle. As the GEOINT Systems Engineer you will interact daily with senior government and Program staff to analyze new concepts and technologies; support the definition and baselining of new capabilities and/or enhancements; advise on all aspects of System Engineering analysis (architecture, requirements, Concept of Operations (CONOPs), interfaces, schedule, and dependency identification); test support, and provide Readiness Event support. Responsibilities to include Collaborate daily with development contractors, government program personnel, and customers on systems engineering and acquisition functions for GEOINT collection, mission management, and mission processing. Provide oversight...

Description Introduction Make a difference for national security by joining a team of dedicated IT professionals who will sustain, modernize and transform the enterprise IT capabilities of the Defense Counterintelligence and Security Agency (DCSA). The Air Force Space and Intel Business Group of SAIC is seeking a Senior Virtual Desktop Engineer to support a transformational infrastructure program for DCSA. SAIC is proud to be supporting DCSA in safeguarding our nation's information. DCSA is the designated oversight authority on the accreditation of classified facilities, information systems, and the insider threat program. This involves security oversight of more than 10,000 companies and approximately 13,000 facilities involved in classified work throughout the DoD and 31 Federal agencies. Specifically, on the DCSA One IT program, SAIC will provide an enterprise IT solution that delivers highly secured and adaptable IT infrastructure, provides customer support, and...

ECS is looking for a Principal Systems Engineer - Embedded Software Engineer to work Onsite in Arlington, VA. The Principal Systems Engineer will provide senior-level technical oversight, quality assurance, and lifecycle governance for embedded tactical software supporting Department of Defense and Navy weapon and combat systems. This is a principal individual-contributor role focused on reviewing, validating, and auditing embedded software and engineering decisions-not people management or day-to-day software development. The ideal candidate has deep experience in safety-critical, highly regulated environments such as missile systems, Aegis or Navy combat systems, or other real-time defense platforms, and brings the technical judgment needed to independently assess software quality, integration impacts, and engineering rigor. What You'll Do Serve as a senior technical authority on Change Control Boards (CCBs) governing embedded software updates and configuration...

Clearance Requirement: Active Secret Clearance is required to start Travel Requirements: 5-10% Location: Dam Neck, VA SUMMARY: WR has an opportunity for a Systems Engineer, Senior to provide technical support to project teams using sound judgment and experience. This role also involves evaluating new technical resources and contributing to systems development and integration efforts. Position responsibilities will include, but are not limited to the following: Independently analyzing the performance of hardware and software interfaces, and identifying alternatives to optimize resource usage and implement modern hardware solutions. Participating in the design, coding, testing, debugging, configuration, and documentation of operating systems and software. Supporting the evaluation and integration of new technical resources. Assisting users with the development and integration of systems and environments. Installing and managing system and...

Description We are seeking a Test Systems Engineer to develop and lead a test campaign for system level testing to validate mission readiness and performance. This position will also serve as the lead system integrator's senior system engineer and support system engineering efforts outside of test responsibilities. The position requires a diverse background in network engineering, software systems engineering and system level test management to support the United States Air Force in its goal of developing an interoperable system of systems to execute long range kill chains. The Department of the Air Force Integrated Fires Command and Control (DIFC2) program goals include improved information sharing, layered security, common data and architecture standards, system resiliency, faster implementation, and more effective cross-domain capabilities. The position requires an individual with strong technical project management skills and experience in developing and implementing test...

Description SAIC is seeking an experienced System Integrator to support a mission-critical Department of the Air Force C3BM program in the DC Metro Area. This role ensures the seamless integration and operational readiness of advanced systems across ground nodes, aerial nodes, and cloud environments. The System Integrator will lead the installation, configuration, and integration of mission systems while ensuring compliance with technical, security, and operational requirements. Key responsibilities include ensuring system interoperability, real-time performance optimization, and secure integration processes. The selected candidate will work closely with Field Service Representatives (FSRs), government stakeholders, and mission partners to deliver reliable, mission-ready systems. The position is onsite in Arlington, VA. The primary duties of the System Integrator include leading the installation, configuration, and integration of hardware, software, and network systems...

Description SAIC is seeking a Sr. Desktop Engineer (SCCM) for a new/exciting program out of Quantico, VA. (Must possess an active TS/SCI and Sec+ Certification.) Pending assigned duties/responsibilities, it is possible to work remote one (1) day a week. Introduction Make a difference for national security by joining a team of dedicated IT professionals who will sustain, modernize and transform the enterprise IT capabilities of the Defense Counterintelligence and Security Agency (DCSA). The Air Force and Combatant Commands Business Group of SAIC is seeking a Senior Desktop Engineer (SCCM) to support a transformational infrastructure program for DCSA. SAIC is proud to be supporting DCSA in safeguarding our nation's information. DCSA is the designated oversight authority on the accreditation of classified facilities, information systems, and the insider threat program. This involves security oversight of more than 10,000 companies and approximately 13,000...

Description SAIC is seeking a highly experiencedSoftware Configuration Manager (SCM)Chief to support a mission-critical Department of the Air ForceC3BM program, ensuring operational readiness and consistency of advanced software systems across ground nodes, aerial nodes, and cloud environments. This role focuses onmanaging software configurations, version control, and integration processeswhile ensuring compliance with DoD and program requirements. The Senior SCM will collaborate with Field Service Representatives (FSRs), government stakeholders, and mission partners to maintain consistent software assets, troubleshoot deployment issues, and oversee enterprise-level software configuration management in secure environments. The majority of the work will be onsite in Arlington, VA but may requireCONUS/OCONUS travelto support ground or airborne mission systems. Key Responsibilities Software Configuration & Lifecycle: Develop and implement configuration...

Description Join a winning team!! SAIC is currently hiring to advance space capabilities supporting our Department of Defense (DOD) and Intelligence Community customers. Ten miles from the SAIC headquarters, our Chantilly, VA team supports systems development, targeting & intelligence analysis, systems engineering & integration and more. This position is for a Satellite System Engineering Manager for a large, multi-year contract supporting cutting-edge and innovative space programs. The Satellite System Engineering Manager leads a proven technical team of system engineers and satellite subject matter experts. In partnership with the SAIC Program Management Team, the Satellite System Engineering Manager is a servant leader that guides the team's support to multiple satellite programs, relays guidance from the PM, and serves as the voice of the team to improve culture. The Satellite System Engineering Manager also directly supports multiple satellite missions...

Description SAIC is seeking a motivated Software Engineer to join our dynamic team supporting mission-critical systems in enterprise and government environments. This position requires a Bachelor's degree (BA/BS) in Computer Science, Software Engineering, or a related field, along with foundational experience in developing, testing, and maintaining software applications. Ideal candidates will have exposure to modern programming languages, version control systems, and software development methodologies. A strong understanding of secure coding practices, troubleshooting, and debugging processes is essential. While prior experience in government or Department of Defense (DoD) environments is a plus, the ability to adapt and rapidly learn complex applications and systems will be highly valued. Preferred candidates will bring experience or familiarity with containerized environments, such as Kubernetes, and an eagerness to engage with new technologies like zarf deployments....

Description SAIC is seeking a Senior Firewall Engineer to support DCSA for an ONSITE position out of Quantico, VA. (All qualified candidates must possess a TS/SCI and a Sec+) Introduction Make a difference for national security by joining a team of dedicated IT professionals who will sustain, modernize and transform the enterprise IT capabilities of the Defense Counterintelligence and Security Agency (DCSA). The Air Force and Combatant Commands Business Group of SAIC is seeking a Senior Firewall Engineer to support a transformational infrastructure program for DCSA. SAIC is proud to be supporting DCSA in safeguarding our nation's information. DCSA is the designated oversight authority on the accreditation of classified facilities, information systems, and the insider threat program. This involves security oversight of more than 10,000 companies and approximately 13,000 facilities involved in classified work throughout the DoD and 31 Federal agencies....

Description SAIC is seeking a SIGINT Mission Engineer to support assessments and studies for the SIGINT Directorate. In this role you will coordinate assessments for HIVE architecture impacts, architecture trades, and architecture performance assessments with the Enterprise, Chief Architect, Chief Engineer, and Program Offices. You will manage development, test, and validation of systems assessment methodologies and tools such as STK, SOAP, MATLAB, and potentially organically developed software. This role is located in Chantilly, VA and requires an active TS/SCI clearance with Polygraph. Job Duties include, but are not limited to: Provide expert mission analysis and technical support to define technical spacecraft and ground requirements, support concept development for new capabilities, create models to analyze mission data, understand "end to end" mission performance of a system, and work with mission users, stakeholders, and development contractors. Perform...

Description SAIC is seeking a Collection Orchestration Mission Engineer to provide SETA support on a high-visibility program supporting the NRO's Ground Enterprise Directorate (GED) in Chantilly, VA. This role sits at the center of enterprise-level acquisition, integration, and modernization efforts that shape how multi-INT collection is orchestrated across the mission. You will partner directly with government leaders and development contractors to design, evaluate, and deliver next-generation tools that automate and optimize collection management across the full system life cycle. Role Impact and Responsibilities This position combines hands-on engineering with high-visibility mission influence. You will: Engineer advanced applications that automate collection management and multi-INT orchestration, performing system trades, interface analysis, and lifecycle engineering that directly shape mission outcomes. Lead technical and programmatic discussions with government...