1,078 Results for

Principal Systems Engineer Jobs in Washington, DC

Jobs

Herndon, VA

On a “typical” day engineers might deep dive to root cause a customer issue, investigate why a metric is trending the wrong way, consult with the top engineers at Amazon, or discuss radical new approaches to automate the remediation of operational issues. A successful Systems Development Engineer is focused on building services and tooling that enhance our operational posture and thinks about the impact of their designs on the scalability, availability, and operational readiness of what they create.

30+ days ago

Baltimore, MD

$130,000–$156,000 / year

Along with security platform mastery in more than one platform area (IDS/IPS, firewall/WAF, access and identity, malware defense, threat modeling, exposure management, among others), the Principal Cybersecurity Engineer is formally trained in enterprise IT design and architecture practices. The Principal Cybersecurity Engineer has a demonstrated mastery in multiple security and non-security technology platforms, with the ability to both lead and advise on the overall designs and strategies of both security and non-security technologies.

2 days ago

Arlington, VA

$131,300–$237,350

If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com . April 27, 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.

8 days ago

Arlington, VA

$131,300–$237,350

Implement software release version control, provide release management support throughout a software product's life cycle (initial software development through promotion to Test, QA and Production Environments), ensuring the consistency and reliability of software builds. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com .

8 days ago

Ellicott City, MD

$127,800–$142,000

The Technical Sales Manager (TSM) provides building-systems knowledge & development/design expertise in support of sales efforts for Energy Efficiency focused Infrastructure Renewal and Building Upgrade & Improvement projects. Bachelor's degree in Mechanical Engineering and 8-years of project development or sales engineering experience developing facilities-based or building infrastructure projects or equivalent combination of education and relevant experience.

4 days ago

Annapolis Junction, MD

$131,300–$237,350

Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. Seeking an experienced and talented software developer to join an existing team that develops and manages software products and tools integral to discovering new mobile data related to the mission.

8 days ago

Reston, VA

$98.48 / hour

Ability to deliver high level design use cases demonstrating clear conceptual architecture, simple, logical explanation of data movement, rationale behind integration choices, and distinction between solution architecture vs. Candidates must be able to deliver high level use cases, demonstrating how they would design an architectural approach for a business scenario — explaining conceptual data flows (“move data from here to here and why”) and high level integration choices.

2 days ago

Gaithersburg, MD

$131,300–$237,350

As a member of a large-scale, Scaled Agile software development organization, you will play a central role in shaping next-generation air traffic automation capabilities by bridging mission needs, systems engineering rigor, and Agile software delivery. Leidos is seeking a Principal Software Architect to join the Air Traffic Business Area within the Homeland Sector , supporting the development of the Leidos Common Automation Platform (L-CAP) and Common Baseline.

8 days ago

Multiple Locations

Full time

BGP proficiency across diverse platforms including Azure VWAN, Arista, Aruba, AWS Transit Gateway, Virtual Network Gateways, VPNs, and Palo Alto. This position typically operates as a team of one, but for larger initiatives you’ll coordinate with engineers borrowed from DevOps, Network Security, and other teams for periods ranging from weeks to months.

14 days ago

Herndon, VA

This position is ideal for an experienced engineer who enjoys solving challenging technical problems, defining system architectures, mentoring engineers, and helping transition advanced research into operational aerospace systems. Fibertek is seeking a Principal Electrical Systems Engineer to join our Herndon, VA team and lead the development of advanced electro-optical and laser-based systems supporting NASA, DoD, and commercial space missions.

7 days ago

Fairfax, VA

However, 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 the contractor's legal duty to furnish information. The Principal Systems Engineer works collaboratively with program managers and project engineers to ensure successful program execution and is responsible for guiding program teams to solving problems through a wholistic, systems engineering approach.

30+ days ago

Annapolis Junction, MD

Full time

We also provide customer solutions in the areas of CND, CNE, and CNO by providing our customers with assessments and solutions in Threat Mitigation, Vulnerability Exposure, Penetration Testing, Threat Hunting, and Preventing Advanced Persistent Threat. A PhD in a Qualified Engineering Field or a related discipline from an accredited college or university plus eighteen (18) years of systems engineering experiencePossess Storage experience.

30+ days ago

$114,000–$171,000 / year

Duties/Responsibilities: Perform traditional Systems Engineering functions, including requirements synthesis and flow-down, verification/validation planning, system trades study support, systems analysis, coordination of design efforts, and management of technical budgets & interface definitions. Northrop Grumman Space Systems Sector, Eastern Region Engineering is hiring a qualified Principal Systems Engineer or Senior Principal Systems Engineer to support missions within the Space Superiority Division located in Dulles, VA.

3 days ago

Annapolis Junction, Maryland

Required Skills: Specialized expertise in logical architecture assessment, quantum algorithm simulation, architecture-aware performance modeling, ISA/compiler analysis, and system-level benchmarking is required to assess algorithms of interest on a functional representation of a target quantum system. This expertise is needed to generate credible performance estimates, identify capability gaps in proposed architectures and simulation capabilities, connect architectural assumptions to algorithm outcomes, and support mission-informed assessment of system capability.

16 days ago

Fairfax, VA

$87,600–$137,600 / year

For Principal Systems Engineer: Bachelor's degree in a STEM discipline and 5 years of relevant experience; Master's degree and 3 years of relevant experience; PhD and 0 years of relevant experience. 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.

3 days ago

$87,600–$131,400 / year

Northrop Grumman Space Systems is a strategic partner specializing in delivering intelligence, surveillance, and reconnaissance solutions for classified and unclassified missions in space. 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.

2 days ago

Alexandria, VA

Raytheon is seeking a Principal Systems Engineer (System Integration) to provide enterprise-wide systems engineering and integration support to a mission-focused government customer within the Intelligence Community. Typically requires a Bachelor's degree in Science, Technology, Engineering, or Mathematics (STEM preferred) and a minimum of 8 years of prior engineering experience or equivalent experience.

1 day ago

$114,000–$171,000 / year

Experience in any of the following areas is also desired: orbital mechanics, orbital debris modeling, spacecraft attitude control, power systems and modeling, avionics or digital electronics design, risk analysis, communications, or spacecraft integration and testing. 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.

10 days ago

Vienna, VA

The Principal, Systems Engineer works closely with product, data science, and customer teams, provides task-level guidance to junior analysts supporting mapping validation and quality operations, and supports evaluation of third-party IP-to-business data sources from both technical and commercial perspectives. Produce high-quality IP-to-business attribution by combining internet-layer signals (e.g., BGP/ASN changes, DNS patterns, hosting footprints, OSINT sources, routing shifts) and applying well-defined rules to resolve conflicting signals while maintaining mapping stability.

30+ days ago

Chantilly, VA

Duties will include coordinating and managing end to end architecture by scheduling assets, configuring, maintaining, and troubleshooting networking equipment, servers and processing systems. Support development organization with the integration of network hardware, software, cybersecurity upgrades and recap efforts for networks and systems operating at various classification levels.

30+ days ago

Baltimore, MD

$108,800–$163,200 / year

Daily activities may consist of test plan development, operation of a Hardware-in-the-Loop (HWIL) digital test bench for data collection, analysis of test data, development of data analysis tools, mentoring of junior engineers, and the presentation of analysis results. Northrop Grumman Mission Systems' Baltimore and Partnered Sites (BaPs) division is seeking a Principal / Senior Principal Electronic Warfare (EW) Systems Engineer to join our team of qualified, diverse individuals at our Baltimore, MD campus.

13 days ago

$108,800–$163,200 / year

2 days ago

$105,400–$158,000 / year

2 days ago

$114,000–$171,000 / year

Duties/Responsibilities: Perform traditional Systems Engineering functions, including requirements synthesis and flow-down, verification/validation planning, system trades study support, systems analysis, coordination of design efforts, and management of technical budgets & interface definitions. The job responsibilities will be as an individual-contributor and deliverable/product lead within a multi-disciplinary engineering team, specifically supporting functions related to Fault Management and System Autonomy (FMSA) for space systems.

2 days ago

Fairfax, VA

Experience with complex electronics: Experience with high-reliability / space systems: Leadership Experience: (Team size, role, projects led): Role in space systems development: Experience with FPGA / Xilinx / VPX (if any): Experience with radiation-hardened systems (if any): Tools Experience (MATLAB / Altium / MBSE / etc.): Motivation / Reason for Relocation (if not local): Motivation / Reason for interest in this position: Contact Number: Email ID: LinkedIn Profile URL: Full Address (Street, City, State, ZIP Code): Notice Period (in weeks): Current Work Authorization Status: Expected Salary: Are you ready to relocate at your own expense and work onsite in Fairfax, Virginia (Primary) Open to CO / NH / commute? Full Name: Years of Experience in Space Industry / High-Reliability Systems: Does the candidate have hands-on experience building space-based electronics subsystems or payloads ?.

30+ days ago

Annapolis Junction, MD

$7,000–$20,000 / year
Full time

With a proven track record in information security, project management, systems/network engineering, security risk management, vulnerability assessments, and mobile security implementation; our employees have the experience, expertise, and innovative thinking our customers need for results that exceed expectations. Founded in 2007, Columbia Technology Partners is Woman-Owned, Service-Disabled Veteran Owned Small Business with a specialization in technology and management consulting committed to solving intricate and sensitive technology issues facing corporations and federal agencies.

30+ days ago

Chantilly, VA

$142,200–$213,400 / year

We are looking for a cleared, uniquely qualified mission oriented, individual with background and hands-on experience with electronics, RF Engineering, Electronic System design, integration, and maintenance, Signal Intelligence (SIGINT), or Electronic Warfare (EW) systems. The position requires excellent oral and written communications skills; strong analytical, organizational, and interpersonal skills; and proficiency with various types of test equipment and design/diagnostic software packages.

1 day ago

Ashburn, VA

$144,100–$190,000 / year

As a leading Modular Open Systems Approach (MOSA) solutions supplier for battlefield platforms and communication systems, we are uniquely positioned to benefit from the DoD's commitment to maintaining technological superiority on the battlefield. Curtiss-Wright's Defense Solution division is a trusted, proven leader, delivering superior products and services that meet the defense and aerospace industries' toughest challenges with best-in-class value.

16 days ago

Ashburn, Virginia

As a leading Modular Open Systems Approach (MOSA) solutions supplier for battlefield platforms and communication systems , we are uniquely positioned to benefit from the DoD's commitment to maintaining technological superiority on the battlefield. Curtiss-Wright's Defense Solution division is a trusted, proven leader, delivering superior products and services that meet the defense and aerospace industries' toughest challenges with best-in-class value.

30+ days ago

Fulton, MD

Solipsys is a wholly owned subsidiary of Collins Aerospace/RTX and is an industry leader in the development of command and control software systems and operates in a dynamic, complex, fast-paced business environment with both commercial and Government customers, including a mix of domestic and international pursuits and programs. Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 8 years prior relevant experience or an Advanced Degree in a related field and minimum 5 years of experience.

30+ days ago

Baltimore, MD

$135,800–$203,600 / year

What You'll Get to Do: Lead Acceptance Test Execution - Plan, schedule, and execute system level acceptance tests; maintain the System ATP plan and procedures; ensure resources (personnel, facilities, equipment, test assets) are available and aligned with production build plans and program milestones. Cross Functional Leadership - Act as the primary interface for Production Program Managers, Technical Leadership (Chief Engineer, System Architect, SEIT Lead), Integration & Test SMEs, and Quality/Mission Assurance.

3 days ago

Manassas, VA

Full time

Our Ultra Short technology unlocks thousands of new operating locations and enables what we call Direct Aviation: quiet, point-to-point regional travel that gets people from where they are to where they want to go, without the congestion of major airports or the noise of conventional aviation. This is a hands-on leadership role - you'll mentor junior engineers, own the architecture of our simulation labs, and build the data management and automated test processes that engineering depends on to move the EL9 toward certification.

30+ days ago

Laurel, MD

You will also work with network, storage, and server personnel to define new or modified solutions to complex problems; respond to requests for new systems to meet capacity and user requirements; and install and administer user desktops for specific critical user-access systems. Configure and manage Windows operating systems, VMWare and installs/loads operating systems software, troubleshoot, maintain integrity of and configure network components, along with implementing operating systems enhancements to improve reliability and performance.

23 days ago

Fort Meade, MD

Bachelor's degree or advanced degree in computer science, information systems, engineering or other related discipline plus at least 15 years of systems engineering experience. We provide fresh alternatives to ordinary, mainstream consulting firms through small, highly skilled, and hand-picked teams that can meet clients' needs in any industry.

30+ days ago

Columbia, MD

Full time

We are seeking an innovative and analytical Systems Engineer to join our research and development team focused on the future of cloud-native architectures, specifically Content Delivery Networks (CDNs). We also provide customer solutions in the areas of CND, CNE, and CNO by providing our customers with assessments and solutions in Threat Mitigation, Vulnerability Exposure, Penetration Testing, Threat Hunting, and Preventing Advanced Persistent Threat.

30+ days ago

Manassas, VA

Full time

Embedded in our Integrated Product Development Team (IPDT), your focus will be on electrical and avionics systems installation, applying DFM and DFA principles to enable efficient, scalable final assembly operations - and ensuring production test processes are built in from day one. Our Ultra Short technology unlocks thousands of new operating locations and enables what we call Direct Aviation: quiet, point-to-point regional travel that gets people from where they are to where they want to go, without the congestion of major airports or the noise of conventional aviation.

30+ days ago

Washington, DC

$130,000–$215,000 / year

Responsible for higher-level product line architecture and providing guidance and oversight to multiple development teams working on different products or technologies to ensure the technologies interoperate or connect to each other appropriately. The Leonardo DRS Naval Electronics business provides leading naval computing infrastructure, network and data distribution and middleware enterprise services, as well as world-class manufacturing and support capabilities.

3 days ago

Fort Meade, MD

You will need to be able to understand/learn the data flows between systems; and learn how data is transformed, checked and manipulated to support dissemination adjudicators in getting the information and artifacts needed to verify that described controls and interfaces meet policy, oversight and compliance requirements, as well as any requirements specifically levied by the adjudicating body. We provide fresh alternatives to ordinary, mainstream consulting firms through small, highly skilled, and hand-picked teams that can meet clients' needs in any industry.

14 days ago

Fulton, MD

Serve as an Onsite Systems Engineer and Command and Control (C2) Operations Subject Matter Expert (SME) in advanced software integration facilities at locations all over the world, working closely with USAF representatives developing prototypes and innovative advancements in Multi-Sensor and Information Fusion, Networked Situational Awareness, and Visualization technologies. Solipsys is a wholly owned subsidiary of Collins Aerospace/RTX and is currently seeking a Principal Systems Engineer to join our team in Fulton, MD who is talented, highly motivated, has a passion for finding innovative solutions to problems, and committed to quality.

30+ days ago

$135,800–$203,600 / year

We strive to attract and retain the best employees by providing an inclusive work environment wherein employees are receptive to diverse ideas, perspectives, and talents to help solve our toughest customer challenges: to develop and maintain some of the most technically sophisticated products, programs, and services in the world. Progressing past analysis and design, Northrop Grumman Systems Engineers also support the integration of sensor modes and trackers from digital simulation environments to sensor labs to our on-site fleet of specially modified test aircraft.

2 days ago

$108,800–$163,200 / year

2 days ago

Chantilly, VA

$160,001–$200,000 / year

You will develop and maintain system models (ensure endtoend traceability, and support SIPaligned onboarding and integration, working closely with the Chief Engineer, System Architect, Integrator, Release Manager, and Government stakeholders to keep the technical baseline accurate, testable, and mission ready. Develop and maintain MBSE models (SysML; DoDAF/UPDM/UAF) in Cameo Systems Modeler / Teamwork Cloud to capture architecture, behavior, data flows, and interfaces.

3 days ago

$154,050–$278,475 / year

As a Principal Information Security Systems Engineer (ISSE) you will join a small team of security engineers providing Information Assurance (IA) Architecture Analysis and Security Engineering Support for the implementation and fielding of the National Leadership Command Capability in support of Nuclear Command, Control, and Communications (NC3), Continuity of Government (COG), and Senior Leader communications. Bachelor of Science degree from an accredited university ideally in Computer Science, Information Assurance, Information Security System Engineering or related field with a minimum of 20 years of experience as an Information Systems Security Engineer (ISSE) or System Engineer on programs and/or contracts with the customer space.

10 days ago

Bethesda, MD

$131,300–$237,350 / year

Working in a hybrid cloud/on-prem mission environment, the engineer will support integration of Linux and Windows hosted mission systems with the endpoint security product and maintaining the scan policies to ensure proper protection of mission systems from external threats. Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management.

30+ days ago

Sterling, VA

What YOU will do: Review and analyze the system level requirements to perform the following tasks: Develop verifiable system level requirement; decompose customer requirements into lower-level system requirements and allocate to the right discipline (HW/SW). Role Description: The Mission Simulation group within the Strategic Defense Solutions organization is hiring a Principal Systems Engineer to join our Mission Systems organization in support of our simulation and training solutions programs.

30+ days ago

Fulton, MD

Solipsys is a wholly owned subsidiary of Collins Aerospace/RTX and is an industry leader in the development of command and control software systems and operates in a dynamic, complex, fast-paced business environment with both commercial and Government customers, including a mix of domestic and international pursuits and programs. Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 10 years prior relevant experience or an Advanced Degree in a related field and minimum 7 years of experience.

30+ days ago

Fulton, MD

Remote

Solipsys is a wholly owned subsidiary of Collins Aerospace/RTX and is an industry leader in the development of command and control software systems and operates in a dynamic, complex, fast-paced business environment with both commercial and Government customers, including a mix of domestic and international pursuits and programs. Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 10 years prior relevant experience or an Advanced Degree in a related field and minimum 7 years of experience.

1 day ago

Bethesda, MD

$131,300–$237,350 / year

Original Posting:January 20, 2026For 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. Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management.

30+ days ago

$183,381–$193,409 / year

ROLE AND POSITION OBJECTIVES: As a Senior-Level Systems Engineer for CISR, youll be a lead member of cross-functional hardware and system design teams responsible for the realization of complex computing and communications systems. General 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.

30+ days ago

Alexandria, VA

$115,400–$192,300 / year

RELX INC is seeking a Principal Software Engineer in Alexandria, Virginia, to design and implement complex search and retrieval systems. With a focus on enhancing user experiences, the position requires strong skills in distributed systems and data processing technologies.

1 day ago

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Principal Systems Engineer Jobs in Washington, DC

Systems Development Engineer II, AWS Commerce Platform-ADC Amazon Development Center U.S., Inc.

Principal Cybersecurity Engineer- Architecture OneMain Financial

Principal Software Engineer Leidos

Principal Software Engineer / Tech Lead Leidos

Principal Technical Sales Manager - Federal Engineer Projects Constellation Energy

Principal Software Engineer (SWE-4) Leidos

Principal Solution Architect - Healthcare System One

Principal Software Architect Leidos

Principal Network Engineer Infovision

Principal Electrical Systems Engineer - Electro-Optical Systems Fibertek Inc

Principal Systems Engineer Trident Systems Inc

Principal Systems Engineer GliaCell Technologies

Principal/Sr Principal Engineer Systems - Fault Management & System Autonomy Northrop Grumman Corp

Principal Systems Engineer Swift

Space Systems/ Principal Systems Engineer Northrop Grumman Corp

Space Payload Systems/Principal Systems Engineer Northrop Grumman Corp

Principal Systems Engineer (System Integration) (Onsite) RTX Corp

Principal/Sr. Principal Systems Engineer Northrop Grumman Corp

Principal, Systems Engineer (R-18971) Dun & Bradstreet Holdings Inc

Systems Engineer Sr Principal Science Applications International Corp

Principal / Sr. Principal Systems Engineer - Electronic Warfare (EW) Northrop Grumman Corp

Space Mission Ground Simulator - Principal / Sr Principal Systems Engineer Northrop Grumman Corp

Principal / Sr. Principal Space Payload Systems Engineer Northrop Grumman Corp

Principal Engineer Systems - Fault Management & System Autonomy Northrop Grumman Corp

Principal Systems Engineer Space Electronics Veracity Software Inc

Principal Systems Engineer Columbia Technology Partners

Sr. Principal Systems Engineer / IPT Lead Northrop Grumman Corp

Principal Systems Engineer - Defense Curtiss-Wright Corp

Principal Systems Engineer-Defense Curtiss-Wright

Principal Systems Engineer (ONSITE) RTX Corp

Sr. Principal Systems Engineer - ATP Lead Northrop Grumman Corp

Principal Systems Test Engineer Electra

Principal Systems Engineer (Specialized Infrastructure Services) Themis Insight

Principal Systems Engineer (Computer Network Support - AI/ML) Themis Insight

Principal Cloud Systems Engineer GliaCell Technologies

Principal Manufacturing Engineer – Systems Installation Electra

Senior Principal Systems Engineer Leonardo DRS Inc

Principal Systems Engineer (Mission Management) Themis Insight

Principal Systems Engineer (HYBRID) RTX Corp

Senior Principal Systems Engineer - State Estimation and Target Tracking Northrop Grumman Corp

Principal Systems Engineer - State Estimation and Target Tracking Northrop Grumman Corp

Principal MBSE Systems Engineer Science Applications International Corp

Principal Information Systems Security Engineer Leidos Holdings Inc

Principal Endpoint Security Systems Engineer Leidos Holdings Inc

Principal Systems Engineer (Onsite) RTX Corp

Senior Principal Systems Engineer (ONSITE) RTX Corp

Sr Principal Systems Engineer (Remote) RTX Corp

Principal Elasticsearch Systems Engineer Leidos Holdings Inc

Senior Principal Systems Engineer General Dynamics Corp

Principal Engineer, Scalable Vector Search Systems RELX

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