Senior Principal Systems Engineer - COMMS Northrop Grumman CorpSenior Principal Systems Engineer - COMMSBaltimore, MD$135,800–$203,600 / yearWe 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. 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.
Senior Principal Systems Engineer - Air to Ground Northrop Grumman CorpSenior Principal Systems Engineer - Air to GroundBaltimore, MD$135,800–$203,600 / yearWe 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. Our organization within Northrop Grumman Mission Systems offers the opportunity to join a team to solve problems in the field and drive new solutions into next generation systems across a wide variety of platforms and environments.
Sr Principal Mission Assurance Engineer Northrop Grumman CorpSr Principal Mission Assurance EngineerSykesville, MD$135,800–$203,600 / yearThe 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. What You''ll Be Doing: Apply quantitative, predictive analysis to evaluate key performance indicators/metrics, risks and opportunities, report findings to management, and proactively escalate risk‑acceptance issues.
Principal Cyber Systems Engineer (S) Northrop Grumman CorpPrincipal Cyber Systems Engineer (S)Annapolis Junction, MD$125,300–$187,900 / yearWhat You''ll Get to Do: A Cybersecurity Systems Engineer (CSSE) will implement weapon system requirements to ensure cyber survivability attributes are implemented in system designs as it assesses/evaluates the customers'/stakeholders' cybersecurity requirements to decompose, derive, and refine the system's cybersecurity requirements at all levels to drive the built-in cybersecurity protections to the architecture and design. Bachelor's degree with 5 years, Master's degree with 3 years, or a PhD with 1 year of experience in: Systems Engineering, Cybersecurity Engineering, Computer Engineering, Computer Science, or 9 years' experience in a cyber systems engineering related fields in lieu of a degree.
Sr Principal Engineer Propulsion Northrop Grumman CorpSr Principal Engineer PropulsionElkton, MD$135,800–$203,600 / yearThe 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. Today, the Elkton PS&C facility designs, develops, and produces solid-propellant propulsion and ordnance systems in programs professionally managed for a wide variety of Government and commercial customers.
Special Projects Group Principal Geotechnical Engineer - Transportation Engineering Consulting Services LtdSpecial Projects Group Principal Geotechnical Engineer - TransportationHanover, MD$125,000–$200,000 / yearECS is currently ranked #60 in Engineering News-Record's Top 500 Design Firms (April 2026), #148 in Engineering News-Record's Top 200 Environmental Firms (October 2025) and #50 in Zweig Group's Hot Firm List (May 2025). Attend weekly department managers meeting to discuss overall goals and learn information that will need to be passed down to Project and Senior Project Managers.
Principal Systems Engineer Power3 SolutionsPrincipal Systems EngineerLaurel, MarylandThe Level 3 System Engineer (SE) shall possess the following capabilities: Manage system requirements and derived requirements to ensure the delivery of production systems that are compatible with the defined system architecture(s) ± Department of Defense Architecture Framework (DoDAF), Service-oriented Architecture (SOA), etc. Establish a process to formally and proactively control and manage changes to requirements, consider impacts prior to commitment to change, gain stakeholder buy-in, eliminate ambiguity, ensure traceability to source requirements, and track and settle open actions.
Senior Principal Systems Engineer - State Estimation and Target Tracking Northrop Grumman CorpSenior Principal Systems Engineer - State Estimation and Target Trackinglinthicum, MD$135,800–$203,600 / yearWe 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.
Principal Hardware Design Engineer Leidos Holdings IncPrincipal Hardware Design EngineerLaurel, MD$131,300–$237,350 / yearAs part of a multidisciplinary engineering team, you will serve as a senior technical authority, guiding complex engineering efforts, advancing innovative design methodologies, and helping shape the future direction of hardware engineering capabilities supporting national security missions. As a Principal Hardware Design Engineer, you will provide expert technical guidance across complex engineering efforts while developing innovative hardware solutions, advancing reverse engineering methodologies, and mentoring engineering teams.
Principal DevOps Engineer GliaCell TechnologiesPrincipal DevOps EngineerAnnapolis Junction, MD$200,000–$280,000 / yearWe 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. Location: Annapolis Junction, MD (onsite full time) The position allows little to no work from home and will require a significant portion or all work to be performed in a Sensitive Compartmented Information Facility (SCIF).
Senior Software Engineer / Reverse Engineer GliaCell TechnologiesSenior Software Engineer / Reverse EngineerLaurel, MD$200,000–$280,000 / yearWe 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. GliaCell’s Enterprise capabilities include Full-Stack Application Development, Big Data, Cloud Technologies, Analytics, Machine Learning, AI, and DevOps Containerization.
Principal Software Engineering Manager - CTJ - Poly MicrosoftPrincipal Software Engineering Manager - CTJ - PolyAnnapolis Junction, MD$142,800–$274,800 / yearMasters Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR Bachelors Degree in Computer Science or related technical field AND 12+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience. This leader will set technical direction, grow a high-performing engineering team, and deliver secure, compliant, and highly reliable platform capabilities that support internal security systems and customer-facing cloud offerings.
Principal Engineer, Scada Engineering (Bess) InvenergyPrincipal Engineer, Scada Engineering (Bess)Baltimore, MD$155,000–$180,000 / yearThis role is accountable for defining and documenting control strategies and data interfaces between substation devices, generation resources, data centers, remote operation centers, and external entities, and for driving reliable data connectivity and control readiness from design, commissioning, and turnover. Monitor construction progress remotely and via on site visits, support resolution of field issues, attend in person meetings with stakeholders, and provide on-site programming and field support during commissioning when required.
NewPrincipal Systems Engineer Leidos Holdings IncPrincipal Systems Engineerfort meade, MD$131,300–$237,350 / yearLeidos is seeking a Principal Systems Engineer to lead the analysis of user requirements, CONOPS, and system architectures to design and deliver scalable solutions across Linux server environments, containerized platforms, and NexGen architectures. Twenty (20) years of Systems Engineering experience in programs of similar scope, including experience with Linux server environments, container technologies, GOTS product integration, and data flow tools such as Apache NiFi.
Principal Information Systems Security Engineer Leidos Holdings IncPrincipal Information Systems Security EngineerLinthicum, MD$154,050–$278,475 / yearAs 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.
Principal Cloud Engineer Meso Scale Diagnostics LLCPrincipal Cloud EngineerMD$116,600–$177,800 / yearPartner with Cybersecurity on cloud security engineering: IAM, KMS encryption, secrets management, GuardDuty, Security Hub, AWS Config, vulnerability management, and SIEM (SIEMonster/Wazuh) integration; lead remediation of cloud security findings. Strong cloud security engineering knowledge: IAM design at scale, KMS and secrets management, GuardDuty/Security Hub/AWS Config, vulnerability management, and integration with enterprise SIEM platforms (Wazuh, Splunk, Sentinel, or comparable).
NewPrincipal Mechanical Engineer PGS WorldwidePrincipal Mechanical EngineerAnnapolis, MD$131.06 / hourBS degree in Engineering (Mechanical, Aerospace, Ocean Engineering, or equivalent STEM) and 8+ years of experience, or MS degree with 6+ years of experience, or PhD with 4+ years of experience for Senior Principal level. PGS Worldwide is seeking a Principal Mechanical Engineer or Senior Principal Mechanical Engineer in Annapolis, MD for a one year contract-to-hire role supporting a leading aerospace & defense company.
Principal Geotechnical/CMT Engineer - Annapolis Junction, MD Hillis-Carnes Engineering Associates IncPrincipal Geotechnical/CMT Engineer - Annapolis Junction, MDAnnapolis Junction, MDDuties may include but are not limited to; general geotechnical engineering practice including the preparation of geotechnical reports/calculation, technical support of field staff, review of construction inspection daily field reports, and occasional project site field visits related to the projects you are involved in. Candidate will work with our geotechnical and materials testing/inspections departments and be responsible for a wide variety of projects for public and private sector clients.
Principal Geotechnical/CMT Engineer - Frederick, MD Hillis-Carnes Engineering Associates IncPrincipal Geotechnical/CMT Engineer - Frederick, MDFrederick, MDDuties may include but are not limited to; general geotechnical engineering practice including the preparation of geotechnical reports/calculation, technical support of field staff, review of construction inspection daily field reports, and occasional project site field visits related to the projects you are involved in. Candidate will work with our geotechnical and materials testing/inspections departments and be responsible for a wide variety of projects for public and private sector clients.
Payload AI&T Lead Sr. Principal Systems Engineer Northrop Grumman CorpPayload AI&T Lead Sr. Principal Systems EngineerLinthicum, MD$135,800–$203,600 / yearResponsibilities include leading I&T analysis and tool development, coding/script development to analyze and interpret RF data for the purposes of debug/troubleshooting and system compliance assessment, support various test environments with different analysis needs, create/improve/operate custom SW tools during I&T and operational workflow. Bachelor's degree with 8 years of experience, a Master's degree with 6 years of experience or a PhD with 3 years of experience in Electrical Engineering, Computer Engineering, Computer Science, Applied Physics, Applied Mathematics, or related technical fields.