Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Systems Engineer SME

$131.3k - $237.35k

Leidos

Description

Job Description:

Lead the Technical Vision. Shape the Future.

Leidos is seeking an experienced Systems Engineer Subject Matter Expert (SME) to provide technical leadership for the Chinook Program supporting the customers’ application. This is a high impact leadership role for an engineering expert who enjoys solving enterprise-scale challenges, influencing technical strategy, and mentoring high-performing engineering teams.

As a Systems Engineering SME, you’ll serve as the technical authority for systems engineering activities, helping shape the architecture and future direction of a mission-critical application while ensuring engineering excellence across the program. You are expected to monitor systems and troubleshoot system anomalies. Systems are monitored throughout the day. You will interact with end users and other contractors that provide support services required for the system. This includes security, cloud provisioning, and external interfaces with other systems.

You’ll also be expected to provide feedback to the system technical development leads and test engineers to make the software and testing more effective and reliable and maintain system documentation and make presentations to end users and Government managers.

Why Join Leidos?

This is more than a systems engineering position, it’s an opportunity to influence the technical direction of a high-visibility program while mentoring exceptional engineers and solving some of today’s most complex engineering challenges. At Leidos, you’ll work in a collaborative environment where innovation, technical excellence, and mission success go hand in hand.

Position may be performed in the following locations below. 

  • Gaithersburg, MD
  • Alexandria, VA
  • Chantilly, VA 
  • Englewood, CO
  • St. Louis, MO
  • Tucson, AZ
Clearance Level Required:

Active Top Secret/SCI with the ability to successfully pass a Polygraph examination.

Primary Responsibilities:

  • Serve as the technical lead and systems engineering authority for the customer application.
  • Define system architecture, engineering standards, technical roadmaps, and modernization strategies.
  • Manage and maintain cloud-based application systems to ensure high availability, reliability, and performance.
  • Troubleshoot complex technical issues and develop effective solutions to support system functionality and operational needs.
  • Evaluate opportunities in the use of AI tools and how they can be applied to troubleshooting and system monitoring.
  • Lead requirements analysis, system design, integration, verification, and validation activities.
  • Guide technical decision making across cross-functional engineering teams.
  • Evaluate emerging technologies and recommend innovative solutions to improve system capabilities.
  • Lead technical risk identification, mitigation planning, and engineering trade studies.
  • Mentor systems engineers and promote engineering best practices across the program.
  • Partner with program leadership and stakeholders to align technical solutions with mission objectives.
  • Drive continuous improvement initiatives that enhance system performance, scalability, security, and maintainability.

Basic Qualifications:

  • US citizenship is required per contract.
  • Bachelor's degree in Systems Engineering, Computer Science, or related field and 12-15 years of prior relevant experience or Master’s with 10-13 years of prior relevant experience. May possess a Doctorate in a technical domain.
  • 12+ years of progressive systems engineering experience supporting software-intensive systems or enterprise systems.
  • Demonstrated experience leading technical teams and influencing engineering strategy.
  • Deep knowledge of systems architecture, integration, lifecycle engineering, and systems thinking.
  • Experience leading engineering efforts within Agile and DevSecOps environments.
  • Exceptional leadership, communication, collaboration, and technical mentoring skills.

Preferred Qualifications:

  • Experience supporting large-scale government or mission-focused programs.
  • Demonstrated use of AI tools to optimize systems or ideas of how AI tools could be deployed to manage tasks described in the job description.
  • Expertise in cloud-native architecture, distributed systems, and enterprise modernization.
  • Systems Engineering Professional (SEP), INCOSE, CISSP, Security+ certification, or similar credentials.
  • Proficient in Python or C++ software development, automation, and system support.
  • Experience working with Linux operating systems in support of application deployment, automation, and systems support.
  • Proven success leading multidisciplinary engineering teams across complex technical programs.

#Chinook

#NSBA

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.

Original Posting:
September 28, 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.

Pay Range:
Pay Range $131,300.00 - $237,350.00

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 .

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 .

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 .

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

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.

Vacancy posted 4 days ago
Similar jobs that could be interesting for youBased on the Systems Engineer SME in Collinsville, IL vacancy
  • $120k - $160k

     ...ID: 2614746 Location: Scott Afb, IL, US Date Posted: 2026-07-22 Category: Information Technology Subcategory: IT Systems Engineer Schedule: Full-Time Shift: Day Job Travel: No Minimum Clearance Required: Secret Clearance Level Must Be Able... 
    Suggested
    Full time
    Contract work
    Remote work
    Monday to Friday
    Shift work
    Weekend work

    SAIC

    Scott Air Force Base, IL
    4 days ago
  • $131.3k - $237.35k

     ...Matters! Are you a highly skilled Software Engineer ready to tackle complex technical...  ...Software Engineer Subject Matter Expert (SME) to join the Chinook Program supporting our...  ...APIs, microservices, data services, and system integrations. Build responsive and user... 
    Suggested
    Contract work
    For contractors
    Local area
    Immediate start

    Leidos

    Caseyville, IL
    4 days ago
  •  ...Systems Engineer, MidEOE Statement: We are an equal employment opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veteran status or any other... 
    Suggested
    Part time

    William C Brown Inc

    Saint Louis, MO
    4 days ago
  • $120.64k - $197.6k

     ...environments supporting mission-driven customers. You`ll solve complex technical problems across enterprise infrastructure, operating systems, cloud, networking, security, database, and ArcGIS while working directly with customers to deliver reliable enterprise solutions.... 
    Suggested
    Relocation
    Relocation package

    Esri

    Saint Louis, MO
    4 days ago
  •  ...SAP Basis System Engineer IVLocation: 12405 Powerscourt Dr, Saint Louis, MO - Hybrid 4x1Contract: 6 mos CTH (conversion salary is 140k)IV Process: 2 rounds – 1st virtual screening, 2nd onsiteCandidates must be authorized to work in the US w/o sponsorship, now or in the... 
    Suggested

    Saxon Global

    Saint Louis, MO
    4 days ago
  • $120.64k - $197.6k

     ...help design, deploy, and optimize mission critical geospatial systems that support national security operations. In this role, you...  ...missions. This is an opportunity to apply your system engineering expertise in environments where scale, security, and performance... 
    Relocation
    Relocation package

    Esri

    Saint Louis, MO
    3 days ago
  • Advanced ArcGIS Deployment SpecialistIn this position, you will deploy and optimize advanced and mission critical ArcGIS deployments. You will partner directly with customers to share best practices on advanced ArcGIS Enterprise deployment architecture and integration ...

    Esri

    Saint Louis, MO
    3 days ago
  • $110k - $165k

     ...future of our communities. This is a Lead Cloud & Infrastructure Engineering position at the Vice President level, which is part of the job...  ...infrastructure and ensuring the seamless operation of IT systems to support business needs effectively.Morgan Stanley is an industry... 
    Temporary work
    Local area
    Remote work
    Flexible hours

    Morgan Stanley

    Saint Louis, MO
    8 days ago
  •  ...Senior System EngineerJoin Esri`s Professional Services team and lead the design and delivery of mission critical ArcGIS deployments...  ...supporting Defense and Intelligence operations. As a Senior System Engineer, you will architect and optimize enterprise scale geospatial... 

    Esri

    Saint Louis, MO
    4 days ago
  •  ...Systems EngineerOur foundation is built upon the heart of patriotism; grounded in protecting that which matters most as Vigilant Defenders...  ...as their front-line Vigilant Defenders.We're hiring a Systems Engineer to work at Scott Air Force Base located near O'Fallon, IL. In... 
    Work experience placement
    Weekend work

    Second-61

    O Fallon, IL
    14 hours ago
  •  ...Zachary Piper Solutions seeks a Model-Based Systems Engineer (MBSE) Level 3 to support advanced aerospace and defense programs within a leading national security organization. This role is fully onsite in St. Louis, Missouri or Seattle, Washington, and requires an active... 

    Zachary Piper Solutions

    Saint Louis, MO
    5 days ago
  •  ...Senior Systems Engineer (SAS)Location : St. Louis, MO Clearance : TS/SCI Citizenship : US Citizenship RequiredWhether running countries, corporations, or courtrooms, our clients bear the responsibility for shaping the lives of millions. At Intellectix, we are on a mission... 

    Intellectix

    Saint Louis, MO
    4 days ago
  •  ...Esri's Professional Services team seeks a senior systems engineer to design, deploy, and optimize mission-critical geospatial systems across secure environments. You will architect and support ArcGIS deployments in cloud, on‑premises, and hybrid setups, ensuring performance... 

    Esri

    Saint Louis, MO
    18 hours ago
  •  ...automation and process improvements, as directedSkills and Abilities:Interest in learning and supporting Splunk for log analysis, system monitoring, and data visualization in an enterprise IT environment.Basic understanding of Windows and Linux operating systems through... 
    Summer work
    Internship
    Summer internship
    Work at office
    Remote work
    Monday to Friday

    Enterprise Mobility Inc

    Saint Louis, MO
    2 days ago
  •  ...Jobot in St. Louis, MO is seeking a hands-on BAS Systems Specialist. You will program, troubleshoot, commission, and support building automation systems across commercial facilities, interacting directly with customers to ensure reliable operation. The role focuses... 
    Full time

    Jobot

    Saint Louis, MO
    4 days ago
  • ## Job Description# Senior Principal Systems EngineerApply**Job#: 3041720****Job Description:**Senior Principal Systems Engineer**Location:** St. Louis, Missouri (Remote)Role OverviewThis employer is seeking a Senior Principal Systems Engineer to join a robust technology... 
    Full time
    Work at office
    Remote work
    Work from home
    Home office

    Apex Systems

    Saint Louis, MO
    2 hours ago
  • $90k - $160k

     ...Zachary Piper Solutions is seeking a Model-Based Systems Engineer (MBSE) Level 3 to support advanced aerospace and defense programs within a leading national security organization. You’ll join a high‑impact Systems Engineering & Integration team driving next‑generation... 

    Piper Companies

    Saint Louis, MO
    17 hours ago
  •  ...the convergence of cybersecurity intelligence analytics and systems engineering. We invite you to join the team where you can build innovate...  ...Sentar is seeking a Computer and Information Systems Manager SME at Scott AFB IL! Role Description: Provides executive-level... 
    Full time
    Temporary work
    For contractors
    Flexible hours

    Sentar

    Scott Air Force Base, IL
    2 days ago
  •  ...Paragon Technology seeks a Senior Systems Engineer IV to provide senior-level technical and systems engineering support for the JTMS Joint Program Office at Scott AFB, IL. The role focuses on systems engineering, RMF accreditation, Agile requirements coordination, and... 
    Work at office

    Paragon Technology

    Shiloh, IL
    14 hours ago
  • $131.3k - $237.35k

     ...mission that matters? Leidos is seeking a proficient Software Engineer Subject Matter Expert (SME) to join the Chinook Program supporting an Intelligence...  ..., data services, integrations, and distributed systems. • Provide expertise in cloud-native and containerized... 
    Contract work
    Local area
    Immediate start

    Leidos

    Saint Louis, MO
    1 day ago
  •  ...Peraton is seeking a Systems Engineering, Associate to support software-intensive systems for national defense programs from our St. Louis, MO office. The role targets a Summer 2027 start after security clearance. You will contribute to design, development, and testing... 
    Summer work
    Work at office

    Peraton

    Saint Louis, MO
    2 days ago
  • $142.6k - $261.5k

     ...team of product leaders, data scientists, designers, and software engineers enable our clients to solve their most complex product...  ...of quality assurance and testing practices. Knowledgeable in system development lifecycle and technology integration. To qualify for... 
    Summer holiday
    Flexible hours

    EY

    Saint Louis, MO
    3 days ago
  •  ...runbooks, and operational acceptance evidence. Provide advanced engineering across Microsoft server, Azure, Microsoft 365, Active...  ...review under Project and Technical Services governance. Mentor Systems & Network Engineers, conduct peer review, improve escalation quality... 
    Permanent employment
    Full time
    Work at office

    Forward Slash Technology

    Saint Louis, MO
    4 days ago
  •  ...Linux Systems EngineerMarathon TS is seeking a TS/SCI-cleared Linux Systems Engineer to design, administer, automate, and optimize enterprise Linux infrastructure running across Nutanix hyperconverged environments. The role combines Linux engineering, Nutanix HCI administration... 

    Marathon TS

    Saint Louis, MO
    4 days ago
  • $113k - $139k

     ...Linux Systems EngineerLinux Systems Engineer Springfield, VA or St. Louis, MO Active TS (SCI eligibility) clearance and eligibility to obtain a CI polyAt Bcore, our strength comes from how we deliver impact to the mission. Whether it's architecting critical IT solutions... 

    teKnoluxion

    Saint Louis, MO
    4 days ago
  •  ...Managed ServicesJob DescriptionBy Light Professional IT Services LLC readies warfighters and federal agencies with technology and systems engineered to connect, protect, and prepare individuals and teams for whatever comes next. Headquartered in McLean, VA, By Light... 
    Contract work
    Work experience placement
    Worldwide
    Monday to Friday
    Weekend work

    By Light Professional IT Services

    Scott Air Force Base, IL
    17 hours ago
  • EY’s Platforms Practice is hiring for a Manager in Application Design and Development. You’ll define user requirements and deliver UI across mobile, web, and tablet platforms while coding and specifying development tasks. You’ll lead delivery, manage risk, and coordinate...

    EY

    Saint Louis, MO
    2 days ago
  • $169k - $233k

     ...is experiencing record growth — and civil engineering is at the center of it. From the $10B+...  ...that ambition. As a Senior Civil Engineer SME within our Advanced Manufacturing group,...  ...routing, natural gas for emergency generator systems, fire protection water supply, and... 
    Full time
    Contract work
    Work at office
    Local area
    Remote work

    Jacobs

    Saint Louis, MO
    4 days ago
  •  ...Mid ServiceNow ITSM Process Systems EngineerUSmax Corporation is seeking a dynamic and detail-oriented Mid ServiceNow ITSM Process Systems Engineer to lead an effort to review and update IT Service Management (ITSM) processes on the ServiceNow platform. This role bridges... 
    Work at office
    Work from home
    Home office

    USMax

    Saint Louis, MO
    4 days ago
  •  ...Peraton is seeking a Systems Engineering Associate to support software-intensive systems for national defense programs in our St. Louis, MO office. The role involves working on cybersecurity, satellite ground systems, cloud computing, and networking within an Agile team... 
    Summer work
    Work at office

    Peraton

    Saint Louis, MO
    2 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Systems Engineer SME. Be the first to apply!