Senior System Engineer Jobs in Frederick, MD (NOW HIRING)

Description

Leidos is seeking a TS/SCI Senior Systems Engineer to support DIA’s National Digital Exploitation and OSINT Center, or NDOC, formerly NMEC, under our 10-year DOMEX Technology Platform, or DTP, contract.

In this role, you will help engineer mission workflow and data-management capabilities that support high-priority intelligence operations. You will work across systems engineering, software development, architecture, Agile delivery, and stakeholder engagement to translate mission needs into technical requirements, system designs, workflow designs, interface definitions, test approaches, and implementable backlog items.

This is a technical systems engineering role, not a traditional system administration role. The focus is on requirements analysis, solution design, system and interface engineering, workflow engineering, integration and test planning, technical documentation, risk management, and delivery coordination across Appian workflows, microservices, and enterprise system architectures.

You will serve as a Senior Systems Engineer, Scrum Master, and Product Owner for a focused technical team creating and managing Appian Enterprise Workflows and a Data Catalog system. You will work closely with other Systems Engineers, Software Engineers, Architects, Product Owners, Scrum Masters, and Government stakeholders to deliver reliable, scalable, mission-focused capabilities.

Most work is conducted on-site at the client location in Bethesda, MD. A flexible schedule is available, and some tasks may occasionally be performed remotely. The percentage of remote work will vary based on client requirements and deliverables.

Primary Responsibilities

• Lead systems engineering activities for Appian workflow and enterprise data capabilities, including requirements analysis, feature decomposition, system design, interface analysis, integration planning, test planning, deployment support, sustainment, and system assessment.
• Translate mission and stakeholder needs into clear technical requirements, acceptance criteria, design artifacts, workflows, and implementation-ready Agile backlog items.
• Develop and maintain technical artifacts such as design packages, workflow designs, interface descriptions, system documentation, technical solution papers, white papers, and release-support documentation.
• Coordinate with partner systems, software teams, architects, and Government stakeholders to manage dependencies, clarify requirements, resolve technical issues, and align delivery priorities.
• Support creation, enhancement, and maintenance of Appian Enterprise Workflows and the Enterprise Data Catalog.
• Define and refine processes for technical platforms, system specifications, input/output parameters, software compatibility, integration points, and operational constraints.
• Support Agile sprint and release planning, including creation and refinement of GitLab issues, Jira tickets, Confluence pages, GitLab Wiki documentation, and related collaboration artifacts.
• Facilitate Scrum ceremonies, including sprint planning, backlog refinement, reviews/demos, retrospectives, and daily team coordination.
• Identify risks, dependencies, and impediments; drive mitigation planning; escalate issues when needed; and support continuous process improvement.
• Coordinate development activities across microservices, workflow platforms, data services, and supporting system architectures.
• Apply systems engineering discipline to ensure solutions are technically sound, testable, traceable, well-documented, and aligned to mission outcomes.

Basic Qualifications

• BS in Engineering, Computer Science, Systems Engineering, or a related field, or equivalent experience, with 12+ years of experience in systems engineering, software development, solution engineering, or another related technical field. Additional experience in lieu of degree.
• Active Top Secret/SCI security clearance with the ability to obtain and maintain a Polygraph.
• Experience translating mission, user, or stakeholder needs into technical requirements, system designs, workflows, or implementation plans.
• Experience creating design packages, workflow documentation, technical solutions, white papers, or related engineering artifacts.
• Experience with Agile delivery, including implementing Agile processes and techniques in a technical team environment.
• Experience facilitating Scrum activities, including sprint planning, backlog grooming/refinement, retrospectives, and review/demo sessions.
• Experience with GitLab, Jira, Confluence, GitLab Wiki, or similar Agile and collaboration tools.
• Strong verbal and written communication skills, with the ability to communicate effectively across technical teams, non-technical stakeholders, and Government customers.
• Possess or be willing to earn Appian Certified Developer certification.
• Familiarity with structured systems engineering methods, architecture-driven design, requirements traceability, interface definition, or comparable systems engineering approaches and tools.

Preferred Qualifications

• Software development or scripting experience using languages or frameworks such as Python, Java, React, or similar technologies.
• Experience with the Appian low-code development platform.
• Experience designing, configuring, or integrating workflow applications, web applications, or enterprise business-process capabilities.
• Experience with database systems, search engines, model-view-controller frameworks, or web application architectures.
• Experience working in Red Hat, CentOS, Oracle Linux, or similar Linux environments.
• Experience with big data applications or data-intensive mission systems.
• Familiarity with continuous integration/continuous delivery tools such as Jenkins, Bamboo, or equivalent tools.

Scaled Agile Framework certification, such as SAFe Agilist or another SAFe certification.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. 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.

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.