Physics jobs in Ashburn, VA

Remote

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4d ago

Remote contract for PhDs in Physics, Applied Physics, or related fields. Work on cutting-edge projects with top AI labs while earning $200+/hour, fully remote, with flexible weekly hours. No AI experience required Role Overview: Help fine-tune large language models (like ChatGPT) using your physics skills. Youll design problems, check how well AI solves them, and work with researchers to build better benchmarks. Responsibilities: Design advanced physics problems to test AI performance (e.g., m

Easy Apply

Contract

200 - 300

Remote Physics Specialist (PhD)

Remote

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4d ago

Easy Apply

Contract

200 - 300

Optical Communication Engineer

Herndon, Virginia

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Today

Job Title Optical Communication Engineer Location Herndon, VA - Herndon, VA 20171 US (Primary) Job Description Would you enjoy working with a collaborative team of engineers to design and build satellite based optical communications laser terminals including optical inter-satellite links (OISL) and direct to earth links. Fibertek is looking for an optical communication engineer to join our Herndon, VA team to help pave the way for tomorrow's advancement in space exploration. You will embrac

Full-time

USD 80,000.00 - 145,000.00 per year

Principal Nuclear Engineer - TS/SCI Polygraph Required

Reston, Virginia

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Today

Leidos' Analysis Solutions business area is seeking a highly accomplished Principal Nuclear Engineer Subject Matter Expert (SME) to support critical national security missions in Reston, Virginia. This role offers the opportunity to apply advanced nuclear engineering expertise to some of the nation's most challenging counterproliferation and nuclear survivability problems. The successful candidate will lead technical assessments of foreign nuclear weapons infrastructure, reverse engineer protec

Full-time

USD 154,050.00 - 278,475.00 per year

Antenna Engineer

Chantilly, Virginia

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Today

FTS International, LLC (FTS) is committed to providing the Federal Government with quality consultants and support. To ensure mission success we focus on putting our customers first while minimizing corporate bureaucracy on our staff. We provide Subject Matter Experts (SME) free of Organizational Conflicts of Interest (OCI) focused on independent analysis and mission support services within the disciplines of Engineering, Counter Terrorism Operations, Management, Information Technology, Signals

Full-time

USD 165,000.00 - 197,000.00 per year

Aerospace Engineer

Chantilly, Virginia

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Today

Position Title:Aerospace Engineer Position Type:Full-time (ON-SITE) Position Location:Chantilly, VA Clearance Required:TS/SCI w/CI Poly Waypoint's client is seeking a highly motivated and skilled Aerospace Engineer to join their team supporting a critical government client. This position offers the opportunity to support RDT&E for cutting-edge projects supporting space-based systems. Responsibilities: Develop and maintain physics-based simulation models of spacecraft systems, including struct

Full-time

Systems Engineer and Architect

Reston, Virginia

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Today

Position Description Modernize GSM's IT infrastructure, provide dedicated ISSO/ISSM security compliance support, and apply MBSE to secure MASINT data flows Required Qualifications: Active TS/SCI clearance with CI PolygraphBS in Engineering, Physics or related Technical degree with the following experience in Space/Ground Aerospace Systems Engineering with 7+ years of experienceDeep technical understanding of MASINT and specific sensor phenomenologies (Radar, EO, Bistatics) Proven experience in S

Full-time

USD 150,000.00 - 185,000.00 per year

Senior Optical Communications Engineer

Herndon, Virginia

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Today

Job Title Senior Optical Communications Engineer Location Herndon, VA - Herndon, VA 20171 US (Primary) Job Description Fibertek, Inc. is a leading developer of laser and electro-optic systems for the aerospace community, with key contributions to lasers for atmospheric sensing, laser communications, and lidar sensors for NASA, DoD, and commercial customers. We are looking for a highly motivated individual to join our Research and Development Division in Herndon, VA. As an optical communica

Full-time

USD 150,000.00 - 210,000.00 per year

Senior Nuclear Engineer - TS/SCI Poly Required

Reston, Virginia

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Today

The Leidos Analysis Solutions business area is seeking a Senior Nuclear Engineer to support critical national security missions in Reston, Virginia. In this role, you will apply advanced nuclear engineering principles in support of counterproliferation efforts and nuclear survivability (hardness) system design. Responsibilities include conducting technical assessments of foreign nuclear weapons infrastructure to reverse-engineer protective hardening measures and identify facility, process, and

Full-time

USD 131,300.00 - 237,350.00 per year

Space Systems Engineer

Chantilly, Virginia

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Today

Overview VTG is seeking an Space Systems Engineer, located in Chantilly, Va. What will you do? Seeking a Communications Systems Engineer with strong optical and quantum communications engineering experience. We are hiring a Communications Systems Engineer to provide systems engineering and technical advisory (SETA) support to an IC Research & Development (R&D) customer developing advanced hardware, software, and architectural solutions for mission-critical optical and quantum communication sy

Full-time

USD 100,000.00 - 195,000.00 per year

Sr Systems Engineer

Chantilly, Virginia

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Today

Position Description This position will serve as a technical member of a dynamic systems engineering team supporting the GEOINT Ground (G2) organization. The candidate will lead GEOINT ground initiatives for future systems through agile acquisition and readiness events and is required to have strong agile systems engineering background and space and ground domain knowledge in customer mission technical capabilities and performance.The candidate will help the customer transition to acquisitions l

Full-time

USD 150,000.00 - 200,000.00 per year

Intern D, RF/Wireless Engineer

Herndon, Virginia

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Today

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris is the Trus

Full-time

USD 29.00 - 53.50 per hour

RF Systems Engineer

Chantilly, Virginia

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Today

Job ID: 2614944 Location: Chantilly, VA, US Date Posted: 2026-07-30 Category: Engineering and Sciences Subcategory: Systems Engineer Schedule: Full-Time Shift: Day Job Travel: Yes - 10% of the time Minimum Clearance Required: TS.SCI_wPoly Clearance Level Must Be Able to Obtain: None Potential for Remote Work: ORA_ON_SITE Description Description SAIC is looking for a Radio Frequency (RF) Systems Engineer to provide management and outreach support to the government customer RF Program M

Full-time

USD 120,001.00 - 160,000.00 per year

Sr. Systems Engineer

Chantilly, Virginia

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Today

Security Clearance: Active TS/SCI with CI Polygraph required Position This position will serve as a technical member of a dynamic systems engineering team supporting the GEOINT Ground (G2) organization. The candidate will lead GEOINT ground initiatives for future systems through agile acquisition and readiness events and is required to have strong agile systems engineering background and space and ground domain knowledge in customer mission technical capabilities and performanceThe candidate w

Full-time

USD 150,000.00 - 200,000.00 per year

Autonomous Systems Software Engineer - Gazebo & C++

Reston, Virginia

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Today

About Metron Metron is an employee-owned company dedicated to delivering innovative solutions for the most challenging national security problems. For over 40 years, our principled approach to problem-solving has yielded creative solutions at the intersection of advanced mathematics, computer science, physics, and engineering. Our people are leaders in their technical fields and are passionate about solving challenging problems. We look for individuals who share this same passion and can apply

Full-time

Communications Systems Engineer (Optical/Quantum)

Chantilly, Virginia

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Today

Job ID: 2615281 Location: Chantilly, VA, US Date Posted: 2026-08-06 Category: Engineering and Sciences Subcategory: Systems Engineer Schedule: Full-Time Shift: Day Job Travel: Yes - 10% of the time Minimum Clearance Required: TS.SCI_wPoly Clearance Level Must Be Able to Obtain: None Potential for Remote Work: ORA_ON_SITE Description ?SAIC is seeking a Communications Systems Engineer with strong optical and quantum communications engineering experience to support specialized analysis, e

Full-time

USD 160,001.00 - 200,000.00 per year

Systems Engineer and Architect

Chantilly, Virginia

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Today

Security Clearance: Active TS/SCI with CI Polygraph required Position Description Modernize GSM's IT infrastructure, provide dedicated ISSO/ISSM security compliance support, and apply MBSE to secure MASINT data flows Required Qualifications: BS in Engineering, Physics or related Technical degree with the following experience in Space/Ground Aerospace Systems Engineering with 7+ years of experience Deep technical understanding of MASINT and specific sensor phenomenologies (Radar, EO, Bistatics)

Full-time

USD 150,000.00 - 185,000.00 per year

Data Engineer

Hybrid in Washington, District of Columbia

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27d ago

Title: Data Engineer Location: Washington DC Position Type: Full Time Compensation Pay Range:$150,000-$160,000 Per Year Description Join a dynamic team in a full-time role based in Washington DC. As a Data Engineer, you will be responsible for developing and maintaining data pipelines to support machine learning initiatives. The role requires expertise in programming languages and data platforms. Key Responsibilities Build and maintain scalable data solutions to meet firm objectives. Implemen

Easy Apply

Full-time, Third Party

$150000 - $160000

Aerospace Payload Systems Engineer

Herndon, Virginia

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Today

Job Title Aerospace Payload Systems Engineer Location Herndon, VA - Herndon, VA 20171 US (Primary) Job Description At Fibertek, space-based lasers are our specialty - we develop cutting-edge, one-of-a-kind lasers and electro-optical systems for atmospheric sensing, laser communications, and lidar sensors for NASA, DoD, and other aerospace customers. We are looking for future lead systems engineers to join our growing team. Join us, and you will work with our veteran lead systems engineers i

Full-time

USD 90,000.00 - 160,000.00 per year

Advanced RF Electronics Engineer

Chantilly, Virginia

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Today

The Aerospace Corporation is the trusted partner to the nation's space programs, solving the hardest problems and providing unmatched technical expertise. As the operator of a federally funded research and development center (FFRDC), we are broadly engaged across all aspects of space- delivering innovative solutions that span satellite, launch, ground, and cyber systems for defense, civil and commercial customers. When you join our team, you'll be part of a special collection of problem solvers,

Full-time

USD 171,400.00 - 257,100.00 per year

Physics jobs in Ashburn, VA, USA