Lead Systems Engineer Modeling Simulation Analysis jobs in Chantilly – Browse 158 openings on RoboApply Jobs

Lead Systems Engineer Modeling Simulation Analysis jobs in Chantilly

Open roles matching “Lead Systems Engineer Modeling Simulation Analysis” with location signals for Chantilly. 158 active listings on RoboApply Jobs.

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BryceTech logo
Full-time|On-site|Chantilly

Join BryceTech as a Lead Systems Engineer specializing in Modeling, Simulation, and Analysis. In this pivotal role, you will drive innovative solutions and lead a team of skilled engineers to create cutting-edge models and simulations that enhance system performance and reliability. Your expertise will be crucial in analyzing complex systems, ensuring they m…

Mar 24, 2026
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APEX TK LLC logo
Full-time|On-site|Chantilly, VA

APEX TK LLC is in search of a dynamic and talented Modeling & Simulation Engineer to become a vital part of our team, dedicated to supporting a significant government client. This role provides the chance to engage in innovative projects within the aerospace sector.Key Responsibilities:Establish modeling requirements based on user needs and system architecture, developing scripts to automate scenario modeling and performance evaluation.Conduct advanced modeling in orbital mechanics, including orbit determination, orbital maneuvering, and spacecraft flight dynamics, as well as sensor phenomenology (optics/radar/RF).Utilize and enhance state-of-the-art modeling and simulation tools and algorithms to tackle pressing challenges related to Space Situational Awareness (SSA) for the Intelligence Community (IC) and the Department of Defense (DOD).Develop code/scripts to create algorithms, perform analyses, and automate data processing to simulate space conflict scenarios for system assessment and mission effectiveness.Collaborate within a team environment to study and analyze a diverse range of intriguing and complex issues in the space domain.Apply phenomenological modeling principles to relevant models and simulations.

Mar 29, 2026
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APEX TK LLC logo
Full-time|On-site|Chantilly, VA, US

Join APEX TK, a dynamic organization dedicated to advancing technology in support of critical government projects. We are currently looking for a passionate and talented Data Scientist to enhance our team, focusing on innovative R&D efforts for space-based systems.Key Responsibilities:Design and uphold advanced physics-based simulation models for spacecraft systems, encompassing structures, sensors, and mission environments.Conduct comprehensive performance modeling for satellite missions, effectively merging sensor, orbital, and environmental models.Execute sensor phenomenology research, including optical, infrared, or radar modeling for detection, tracking, and signature analysis.Engage in orbital mechanics modeling, covering orbit determination, orbital maneuvers, and spacecraft flight dynamics.Utilize scripting languages (Python, MATLAB, etc.) to streamline workflows, analyze data, and facilitate integration between simulation tools.

Mar 26, 2026
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xm-start logo
Full-time|On-site|Chantilly, Virginia, United States

Join the innovative team at XMSTART as an Operations Systems Engineer, where you'll play a crucial role in a dynamic space program located in Chantilly, VA. In this exciting position, you will have the opportunity to acquire and deploy next-generation space assets, including pioneering satellite constellations equipped with cutting-edge technology. This mission-driven role allows you to make a significant impact on our nation's capabilities while collaborating with a dedicated team focused on achieving mission success.We are seeking a candidate with a robust background in operations, particularly in satellite operations. You should possess exceptional problem-solving abilities, creativity, and a proactive approach, with a commitment to going above and beyond in a fast-paced NRO System Program Office environment.If you are passionate about shaping the future of space technology and thrive in a mission-oriented atmosphere, this team is the perfect fit for you! Please note that this position is 100% Onsite.

Oct 1, 2025
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BryceTech logo
Full-time|On-site|Chantilly

Join BryceTech as a Space Systems Engineer, where you will play a pivotal role in the design, development, and integration of advanced space systems. Collaborate with a dynamic team of engineers and scientists to push the boundaries of space exploration and technology. Your contributions will directly impact critical missions and projects that shape the future of space endeavors.

Mar 5, 2026
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Rocket Lab logo
Full-time|On-site|Chantilly, VA

ABOUT ROCKET LABRocket Lab is a pioneering space enterprise committed to providing end-to-end launch services, comprehensive spacecraft design, manufacturing capabilities, and payload solutions. Our mission is to enhance access to space, enabling vital scientific exploration, Earth observation, climate change initiatives, national security operations, and innovative technology demonstrations.Our Electron rocket ranks as the second most frequently launched U.S. rocket annually, successfully delivering over 230 satellites to orbit. In parallel, we are advancing the development of Neutron, our upcoming medium-lift reusable launch vehicle designed for larger satellite constellation deployments. Our Space Systems division is responsible for designing and manufacturing a diverse range of satellites and payload components, including those selected for NASA missions to the Moon and Mars, as well as components utilized in the James Webb Space Telescope.SPACE SYSTEMSAt Rocket Lab, we are not just launching rockets; we are shaping the future of space exploration. Our Space Systems team is dedicated to developing everything from complete spacecraft to precision payloads and the critical components that enable them to thrive in the harsh environment of space. This includes solar panels, flight software, star trackers, optical systems, and radios.Our team has facilitated over 1,700 missions, encompassing interplanetary exploration, in-space manufacturing, and national security projects. We have collaborated with esteemed partners, including NASA, the Space Development Agency, and the U.S. Space Force, to build spacecraft and components that support missions to the Moon and Mars. Whether it's a single high-performance spacecraft or a constellation of satellites, our world-class Space Systems team empowers some of the most ambitious space missions on the planet.SYSTEMS ENGINEER II - SECRET CLEARANCEIn Rocket Lab's Optical Systems division, we tackle mission-critical challenges related to the space domain and provide Intelligence, Surveillance, and Reconnaissance (ISR) solutions for Department of Defense (DoD) and Intelligence Community (IC) clients. Our vision is to revolutionize...

Feb 23, 2026
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Lynk logo
Full-time|On-site|Chantilly, VA

Company Overview:Lynk is a pioneering leader in satellite direct-to-device (D2D) technology, holding the unique distinction of being the only company with a commercial D2D license from the FCC. Our innovative service empowers mobile network operators to enable their subscribers to send and receive text messages directly to and from space using standard, unmodified mobile devices. Our technology has been successfully tested across all seven continents and has garnered regulatory approvals in over 30 countries. Currently, we are on the path to commercial deployment, supported by over 40 contracts with mobile network operators spanning approximately 50 countries.At Lynk, we believe in connecting every individual on the planet—over 8 billion people—using the phones they already have. Our mission extends beyond connectivity; it aims to uplift millions from poverty and save countless lives.Job Summary:As a Satellite Operations Engineer at Lynk, you will play a critical role in maintaining the operational integrity and safety of our Low Earth Orbit (LEO) satellite constellation. Your key responsibilities include performing technical reviews and assessments of satellite telemetry, analyzing performance trends, leading investigations into anomalies, conducting technical trades that influence satellite operations, and developing operational concepts and strategies. You will also oversee satellite launches and initial operational phases, while contributing to the enhancement of data analysis tools and operational workflows.Working closely with the Principal Satellite Operations Systems Engineer, you will engage in system-level investigations and contribute to the strategic direction of our operations. This position requires a strong technical background, and the ideal candidate will be adept at navigating ambiguity to develop a clear understanding of system behaviors and operational methods.Core Responsibilities:Conduct daily reviews of satellite telemetry data and alarms to ensure the health and performance of the satellite constellation.Lead end-to-end anomaly investigations, from detection through root cause analysis to corrective actions, implementing long-lasting solutions.Participate in technical trades to optimize operations, taking into account various operational factors.

Mar 24, 2026
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Lynk logo
Full-time|On-site|Chantilly, VA

About LynkLynk is the pioneering force behind satellite direct-to-standard phone technology, known as sat2phone, and holds the unique commercial license from the FCC to operate a commercial sat2phone system. Our innovative technology enables subscribers of mobile network operators to send and receive text messages from space, utilizing standard, unmodified mobile devices. Lynk's services have been extensively tested across all seven continents and are recognized with regulatory approvals in over 30 countries. We are currently deploying our service commercially through more than 40 contracts with mobile network operators across approximately 50 countries.Our mission is to connect all 8 billion people globally through the standard phones they already possess, ensuring they can stay connected everywhere, regardless of circumstances.By joining Lynk, you will play a crucial role in transforming lives on a massive scale, aiming to bring mobile broadband access to billions, alleviate poverty for hundreds of millions, and save countless lives.Job SummaryAs a GNC Engineer at Lynk, you will be integral to the analysis, design, implementation, optimization, and enhancement of the attitude determination and control systems (ADCS) for our satellite constellation. Your contributions will include developing satellite ADCS system designs, crafting flight codes and algorithms, evaluating ADCS components like sensors and effectors, and conducting comprehensive hardware-in-the-loop simulations to analyze satellite dynamics. You'll also be responsible for designing lab test environments to facilitate the development and testing of ADCS.Core ResponsibilitiesYour role will encompass various engineering disciplines, including electrical, mechanical, and software engineering.Advance Lynk's satellite ADCS architecture, focusing on systems that provide both relative and absolute attitude measurements.Refine the Concept of Operations for satellite attitude determination and control systems and associated ground systems.Collaborate with the Systems Engineering team to shape constellation and network architecture based on ADCS performance metrics.Support the development of the six degrees of freedom (6 DOF) simulation for evaluating the attitude determination and control systems.Conduct analyses to assess the performance requirements of satellite ADCS components, focusing on characteristics such as sizing, accuracy, sensor noise, reliability, redundancy, and fault management strategies.

Nov 17, 2025
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Edgesource Corporation logo
Full-time|On-site|Chantilly, VA

Company OverviewWith a legacy of over 25 years, Edgesource Corporation stands out as a leading technology service provider, catering to the needs of the Department of Defense (DOD), Department of Homeland Security (DHS), Department of State (DOS), U.S. Intelligence Community, Law Enforcement, and various federal, state, and commercial clients both domestically and internationally. We pride ourselves on delivering tailored technical solutions that bolster the DOD's Counter Unmanned Aerial Systems (CUAS) mission and combat critical cybersecurity threats in collaboration with the DHS Cybersecurity & Infrastructure Security Agency (CISA). Joining Edgesource means engaging in work that is not just meaningful but also impactful.Position OverviewAs a Senior Systems Engineering Subject Matter Expert, you will lead engineering teams in adopting a multidisciplinary approach to requirements engineering, solutions engineering, scheduling, reliability, resiliency, service development, integration, testing and evaluation, maintainability, and analysis across the National System of Geospatial-Intelligence (NSG), Allied System of Geospatial-Intelligence (ASG), and various Federal Agencies, ensuring the delivery of timely and precise GEOINT services.Job DutiesMentor mid-level and junior systems engineers in executing requirements engineering, solutions engineering, scheduling, reliability, resiliency, service development, integration, testing and evaluation, maintainability, and analytical tasks across NSG, ASG, and Federal Agencies.Oversee the planning, analysis, and traceability of user requirements and system architectures, while identifying opportunities to enhance existing systems and evaluating cloud service capabilities and scheduling constraints.Guide the development of solution designs by mid-level and junior engineers based on rigorous analysis of requirements and emerging technologies.Assist the Government in transforming mission and customer requirements into actionable systems and capability solutions.Support the analysis and allocation of requirements to systems architecture components and executing programs.Conduct systems integration activities.Lead Analysis of Alternatives (AoAs), Course of Action (CoAs), Trade Studies, and Engineering Assessments.Provide strategic technical planning, project management, performance engineering, risk management, and interface design support to the Government.

Mar 24, 2026
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latitudeinc logo
Full-time|On-site|Chantilly, VA

Job Title: Windows System EngineerLocation: Chantilly, VA or King of Prussia, PAClearance Required: Active Top Secret / SCIEmployment Type: Full-TimeOverviewWe are on the lookout for a talented Windows System Engineer proficient in Citrix administration to enhance our secure and mission-critical IT operations in a classified environment. The ideal candidate will possess extensive experience in Windows server management, virtualization, system optimization, and security compliance, demonstrating a solid track record in managing and supporting enterprise-level Citrix environments.Key Responsibilities- Administer, configure, and maintain Windows Server environments (2016, 2019, or later) in alignment with security and operational standards.- Manage, monitor, and troubleshoot Citrix infrastructure including Citrix Virtual Apps and Desktops, StoreFront, and Citrix Director.- Implement and maintain Active Directory (AD), Group Policy, and DNS/DHCP configurations.- Apply DISA STIGs, security patches, and system hardening procedures to ensure compliance with DoD and organizational standards.- Support virtualized environments (VMware or Hyper-V) and assist with storage and network integrations.- Conduct system monitoring, backup, and recovery operations to guarantee high availability and resilience.- Collaborate with cybersecurity teams to maintain compliance with RMF and security baseline requirements.- Provide Tier 2/3 support for escalated system and user issues related to Windows or Citrix systems.- Document configurations, changes, and procedures per organizational policies.Required Qualifications- Active Top Secret / SCI Clearance (TS/SCI)- 5+ years of hands-on experience as a Windows Systems Engineer or Systems Administrator.- Strong experience in Citrix administration (Citrix Virtual Apps and Desktops, Citrix Studio, Citrix Director, StoreFront).- Proficiency in Windows Server management, Active Directory, Group Policy, and PowerShell scripting.- Experience with VMware or Hyper-V virtualization platforms.- Familiarity with DoD security standards, STIGs, and RMF compliance processes.- Excellent troubleshooting, documentation, and communication skills.Preferred Qualifications- Citrix certifications (e.g., CCA-V, CCP-V, or CCE-V).- Microsoft certifications such as MCSA or MCSE.- Experience supporting environments within a DoD, Intelligence Community, or federal contractor setting.- Familiarity with SolarWinds, SCCM, WSUS, or similar management tools.

Oct 13, 2025
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Redhorse Corporation logo
Lead Engineer and Architect

Redhorse Corporation

Full-time|On-site|Chantilly, VA

About Redhorse Corporation Redhorse Corporation delivers data insights and technology solutions that support missions central to U.S. national interests. The team values skilled professionals who serve as trusted partners, focusing on technology-agnostic approaches to complex challenges. Role Overview The Lead Engineer and Architect guides the design, development, and deployment of web applications and internal tools for government clients. This role shapes how agencies use data and technology, with a focus on secure, scalable, and high-quality systems. Collaboration is key: expect to work closely with cross-functional teams to architect, build, and improve systems that support demanding requirements. The position calls for deep experience with modern development frameworks and tools, as well as a proactive approach to system optimization. Success in this position directly improves the efficiency and security of data access at Redhorse, benefiting a range of clients and projects. Location Chantilly, VA

Apr 14, 2026
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XMSTART logo
Full-time|On-site|Chantilly, Virginia, United States

XMSTART is seeking a highly skilled and strategic full-time Lead Transition Engineer to join our dynamic team in Chantilly, VA. This role is 100% Onsite, providing an exciting opportunity to directly impact mission operations.

Nov 5, 2025
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Redhorse Corporation logo
Full-time|On-site|Chantilly, VA

About Redhorse Corporation Redhorse Corporation delivers data insights and technology solutions that support U.S. national interests. The team values professionals who bring technical skill, reliability, and a commitment to supporting complex, high-stakes missions for government clients. Role Overview The Systems Engineer will help shape how government organizations manage and protect their data. This role centers on building a new IT application to automate data access requests, with a focus on secure and efficient handling of sensitive information. Key responsibilities include designing and implementing systems that protect Personally Identifiable Information (PII) and Protected Health Information (PHI). The work demands precision and a strong sense of accountability, with direct impact on the security and efficiency of data access processes across Redhorse projects and clients. Location Chantilly, VA

Apr 14, 2026
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Edgesource Corporation logo
Full-time|On-site|Chantilly, VA

About UsFor over 25 years, Edgesource Corporation has been at the forefront of technology solutions, proudly serving critical clients such as the Department of Defense (DOD), Department of Homeland Security (DHS), and the U.S. Intelligence Community. Our focus ranges from specialized technical solutions for the DOD's Counter Unmanned Aerial Systems (CUAS) to tackling significant cybersecurity challenges alongside the DHS Cybersecurity & Infrastructure Security Agency (CISA). Join Edgesource to engage in work that matters and make a genuine impact.Role SummaryAs a Mid-Level Systems Engineer, you will adopt a multi-disciplinary approach to requirements engineering, solutions engineering, and various other crucial aspects across the National System of Geospatial-intelligence (NSG) and Federal Agencies, ensuring the delivery of timely and precise GEOINT.Key Responsibilities- Lead requirements engineering and solutions engineering efforts across the NSG and ASG.- Plan and analyze user requirements, and develop strategies to enhance existing systems while assessing cloud service capabilities.- Design innovative solutions based on thorough analyses of requirements and emerging technologies.- Collaborate with government teams to translate mission needs into actionable systems requirements.- Aid in the allocation of requirements to architecture components and program execution.- Conduct systems integration tasks and assist with Analysis of Alternatives (AoAs) and engineering assessments.- Support strategic technical planning, project management, and performance engineering.

Mar 24, 2026
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Brycetech logo
Full-time|On-site|Chantilly

Join Brycetech as a Technical Lead Engineer, where you will spearhead innovative projects, lead a dynamic team, and drive cutting-edge technology solutions. Your expertise will be pivotal in shaping our engineering strategies and ensuring high-quality deliverables.

May 4, 2026
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CGS Federal logo
Full-time|Hybrid|Chantilly, VA

Join CGS Federal as a CommVault Systems Engineer specializing in Data Protection and Backup solutions.Employment Type: Full-Time, ExperiencedDepartment: Technology SupportWe are in search of a skilled CommVault Data Protection Engineer who possesses a deep understanding and hands-on experience in architecting, developing, configuring, implementing, testing, troubleshooting, deploying, and maintaining backup and recovery solutions tailored for a large-scale federal government environment.At CGS, we unite passionate, talented, and innovative professionals to tackle the most pressing challenges faced by the government using advanced technology. Our mission is driven by individuals who are eager to enhance government functions, thrive in collaborative settings, and anticipate the needs of our clients. We provide a supportive atmosphere that fosters professional development and many opportunities for learning and growth.Key Skills and Responsibilities:- Design, develop, configure, and secure intricate backup, recovery, and storage solutions across wide area networks (WAN) in multifaceted environments, from single servers to extensive multi-tier, multi-platform configurations utilizing CommVault enterprise solutions.- Establish and sustain effective backup, restoration, and redundancy protocols for essential data, including primary and auxiliary copies as well as VM-based backups. Engage in regular maintenance activities for the backup and recovery infrastructure.- Diagnose and resolve complex issues related to backup and recovery, encompassing networking, application, server, hardware, and appliance challenges.- Deliver analytics, usage tracking, capacity planning, and comprehensive reporting within the CommVault management and monitoring framework.- Implement advanced solutions and strategies to enhance data protection and recovery processes.

Mar 9, 2026
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CGS Federal logo
Full-time|Hybrid|Chantilly, VA

Join CGS Federal as a Senior Lead Network Engineer II, where you'll play a pivotal role in evaluating, enhancing, and maintaining a large-scale network project encompassing wired and wireless infrastructures. In this full-time position, you'll work alongside a dedicated team to assess existing network setups, design cutting-edge infrastructure solutions, and provide essential consultation on hardware and software needs.Your responsibilities will include managing and optimizing the NPS network infrastructure, improving monitoring capabilities, and delivering clear documentation. You'll also conduct assessments, define testing procedures, and implement technology solutions that ensure robust network performance.At CGS, we prioritize collaboration and innovation, offering a supportive environment where your professional growth is encouraged through various learning opportunities. We seek candidates who are not only skilled but passionate about contributing to government innovation and solving dynamic challenges using advanced technology.

Mar 6, 2026
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xm-start logo
Full-time|On-site|Chantilly, Virginia, United States

XMSTART is actively seeking a knowledgeable and strategic Systems Engineer to join our dynamic team in Chantilly, VA. This is a 100% Onsite position. As a Systems Engineer, you will leverage your expertise to support the planning, analysis, testing, and implementation of Business Continuity Planning (BCP), Continuity of Operations (COOP), and resilience strategies.

Dec 19, 2025
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Redhorse Corporation logo
Full-time|On-site|Chantilly, VA

About Redhorse Corporation Redhorse Corporation delivers data insights and technology solutions that support U.S. national interests. The company values proactive professionals who thrive as trusted partners and focus on technology-agnostic solutions for complex challenges. Role Overview: Lead Application Development Engineer This position is based in Chantilly, VA. The Lead Application Development Engineer will drive the design, development, and maintenance of an internal web-based tool for non-technical users. The tool will play a key role in improving government operations and supports mission-critical projects. Key Responsibilities Lead the technical design and implementation of a secure, scalable web application using AWS cloud services. Guide and mentor the engineering team throughout the development lifecycle. Ensure all solutions meet sponsor requirements, security protocols, and federal compliance standards. Promote innovation and best practices within the team. Work within classified sponsor systems as needed. What We Look For Extensive hands-on experience with AWS cloud services and application development. Proven track record leading engineering teams in secure and compliant environments. Background working on projects for government or within classified sponsor systems. Strong technical leadership and the ability to deliver solutions for non-technical end users.

Apr 14, 2026
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Accenture Federal Services logo
Full-time|$78.6K/yr - $160.2K/yr|On-site|Chantilly, VA

Accenture Federal Services supports U.S. federal agencies by delivering technology solutions that strengthen national security and improve public services. With a team of over 13,000 professionals, the company works across defense, public safety, civilian, and military health sectors. As part of the global Accenture network, Accenture Federal Services has earned recognition as a Glassdoor Top 100 Best Place to Work and emphasizes collaboration, inclusion, and ongoing professional development. Role overview This Systems Engineer position is based in Chantilly, VA. The role centers on supporting government projects by designing, building, and maintaining scalable technology solutions using modern cloud services and frameworks. What you will do Design and implement Java microservices using C#, Spring Boot, Hibernate, REST, and gRPC. Develop scalable cloud-based services on AWS, including SQS, SNS, Lambda, SWF/Step Functions, and cloud-native frameworks. Join architecture and design reviews, multi-module planning, and solution development discussions. Research, prototype, and analyze feasibility for new features and modernization efforts. Design and enhance PostgreSQL-backed data services and schemas. Develop and manage CI/CD pipelines with Jenkins, Maven, Git, and GitLab. Containerize and deploy applications using EKS, Docker, and Kubernetes. Create and run unit, integration, and system tests with JUnit 5; support release and beta testing. Troubleshoot performance, reliability, and integration issues across the technology stack. Collaborate with architects, project managers, and clients on requirements, demonstrations, installations, and solution alignment. Document APIs, architecture diagrams, deployment processes, and runbooks. Provide technical leadership, mentoring, and share knowledge with team members. Participate in SAFe Agile ceremonies and contribute to continuous improvement initiatives.

Apr 21, 2026

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