Jobs in the United States

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Added 7 hours ago
VH
Therapeutic Medical Physicist
Veterans Health Administration
Northport, NY
- $179,349 to $228,000 USD / year
The Therapeutic Medical Physicist is located in the Radiation Oncology service at the Northport VA Medical Center. Medical Physics is a branch of physics that is associated with the…
Added 12 hours ago
PN
Radiation Imaging Physicist
Pacific Northwest National Laboratory
Richland, WA
- $100,100 USD / year
Performing modeling & simulation through physics simulation software, and providing analysis and interpretation of simulation output.
Added 20 hours ago
Modeling Physicist
LLNL
Princeton, NJ
We have an opening for a Modeling Physicist in the field of edge plasma physics for magnetic fusion energy devices. You will apply expertise in numerical simulation to understand problems…
Added 23 hours ago
Finance Director
Qolab
Madison, WI · Los Angeles, CA · San Francisco, CA
John Martinis (CTO | Co-founder): Distinguished physicist and 2025 Nobel Laureate in Physics, recognized for pioneering superconducting qubits and advancing scalable quantum systems.
Added 4 days ago
Senior Systems Engineer – Human Performance Research
AeroVironment, Inc.
United States
Demonstrated expertise in a systems discipline, such as: Systems engineering, Human systems integration, Systems/Data Architecture, Modeling and analysis, Technical program engineering
Added 4 days ago
New College Grad - Physicist/Scientist III - PhD (2027 Summer Cohort)
Applied Materials
Santa Clara, CA
We are seeking a highly motivated PhD-level scientist or engineer to develop and apply advanced modeling capabilities for plasma processing applications, including plasma etching,…
Added 4 days ago
AU
Co-Op - Optical Engineer (Internship)
ASML US, LP. (US30)
Wilton, CT
- $18 to $48 USD / hour
…YieldStar product. The candidate should be pursuing a degree in Physicist/Engineer with preference to optical engineering that give him/her the ability to support and develop…
Added 5 days ago
98: Associate Staff Quantum Science and Engineering
MIT Lincoln Laboratory
Lexington, MA
The Advanced Quantum Technologies Group seeks a highly motivated, detail-oriented, curious, and driven physicist, applied physicist, or electrical engineer with hands-on laboratory…
Added 5 days ago
Post Doctoral Fellow B - SOM Radiation Oncology Physics
University of Maryland, Baltimore
Baltimore, MD
The fellow will be primarily supervised by Dr. Dario Rodrigues, Associate Professor and Lead Hyperthermia Physicist in the Department of Radiation Oncology. Dr. Rodrigues brings 18 years of…
Added 6 days ago
Physicist
Xperteez Technology
Remote, United States
Confident in physical reasoning, mechanics, electromagnetism, optics, thermodynamics/statistical mechanics, and modeling/systems thinking
Added 6 days ago
Physicist Level 4
Northrop Grumman
Chandler, AZ
Northrop Grumman’s Space Sector is seeking a Physicist - Level 4 to join our team in Chandler, AZ.
Added 6 days ago
Physicist
AOSense, Inc.
Fremont, CA
We are seeking physicists with expertise in atomic physics. As a Physicist at AOSense, you will apply your experience in laser technology and atomic physics to design, build, optimize, and…
Added 6 days ago
Senior Health Physicist - Nuclear
Kundlas Consulting Group LLC
United States
The Senior Health Physicist plays a critical role in ensuring the safe use and management of radioactive materials within nuclear facilities. This position is responsible for developing,…
Added 6 days ago
Technical Programme Manager, Electrical Engineering
IonQ
College Park, MD
…innovation in drug discovery, materials science, financial modeling, logistics, cybersecurity, and defense. In 2025, the company achieved 99.99% two-qubit gate fidelity, setting a world…
Added 7 days ago
Accelerator Physicist (Lead)
Acceleron Fusion
Cambridge, MA
We have an opening for an Accelerator Physicist (Lead) who will play a key role in the design and optimization of muon production systems for our fusion technology. This is a senior…
Added 7 days ago
Senior Systems Engineer for Threat Discrimination
AeroVironment
Huntsville, AL
Experience in electronic attack/protection modeling development to support analysis and requirements development
Added 7 days ago
Senior Computational Physicist- Boundary Physics
Type One Energy Group, Inc.
Madison, WI · Knoxville, TN
We are seeking an accomplished Senior Computational Physicist - Boundary Physics to lead advanced research and modeling efforts focused on edge, scrape-off layer (SOL), and divertor physics…
Added 8 days ago
Physicist
The Red Gate Group, Limited
Fort Belvoir, VA
The Red Gate Group is seeking a talented and motivated Physicist to support advanced multiphysics modeling and simulation efforts in Ft. Belvoir, VA. In this role, you will contribute to…
Added 8 days ago
Physicist, Senior
Castalia Systems
Reston, VA
Castalia Systems is seeking a Physicist, Senior to support to the government’s all source intelligence analysis of foreign weapons of mass destruction (WMD) programs, to include the…
Added 8 days ago
Senior Engineer - M&S
AeroVironment, Inc.
Colorado Springs, CO
Demonstrated experience in modeling & simulation (M&S), and M&S verification, validation, and accreditation (VV&A) policy, processes, and best practices
Added 8 days ago
CF
Health Physicist
Centers for Disease Control and Prevention
Atlanta, GA
- $112,556 to $146,325 USD / year
…experience or other education; or certification as a health physicist by the American Board of Health Physics, plus appropriate experience and other education that provided an understanding…
Added 10 days ago
JH
Undersea Acoustic Systems Engineer
Johns Hopkins Applied Physics Laboratory
Laurel, MD
- $100,000 USD / year
We are seeking an engineer or physicist to lead the modeling and simulation, design, testing, and evaluation of acoustic transducers and sensor systems for undersea applications. You will…
Added 11 days ago
Q
Atomic Source Physicist - 1072
Quantinuum
Broomfield, CO
- $131,000 to $176,000 USD / year
We are seeking an Atomic Source Physicist in our Broomfield, CO Location.
Added 11 days ago
Health Physicist/Nuclear Engineer
SC&A Inc
Arlington, VA
Health Physicist/Nuclear Engineer About SC&A SC&A, Inc. is an employee-owned environmental and energy consulting firm that has provided scientific, technical, engineering, and consulting…
Added 12 days ago
Q
Atomic Source Physicist
Quantinuum
Broomfield, CO
- $176,000 USD / year

Acceleron Fusion

Accelerator Physicist (Lead)

Cambridge, MA, United States

The salary range for this role is $120,000 to $160,000.

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Job details

Pay: The salary range for this role is $120,000 to $160,000.
Posting language: English
Posted: Oct 27, 2026

Original job description

About us

Acceleron Fusion is developing muon-catalyzed fusion - a path to clean, abundant energy. Building on research sponsored by the U.S. DOE, we have raised over $20M in our Series A venture capital round and have already logged 100+ hours of muon-catalyzed fusion in tests at the Paul Scherrer Institute. Our collaborators include PSI, Oak Ridge, Argonne, Fermilab, and several universities. Join a team where fundamental physics meets application-oriented engineering, and your designs could help move our technology from the laboratory to a commercial energy source.

We have an opening for an Accelerator Physicist (Lead) who will play a key role in the design and optimization of muon production systems for our fusion technology. This is a senior individual contributor position with technical leadership responsibilities, including the expectation to help build and mentor a small team as scope grows.

What you'll do:

Own the technical strategy and program plan for accelerator-driven muon production and associated beamlines, including design, schedule, risk, and interface management.
Participate in design and optimization of accelerator systems and beamlines for muon focusing and cooling; perform and review beam dynamics simulations.
Lead or supervise contractors/vendors for preconceptual linac design and related subsystems; establish technical specifications and acceptance criteria.
Specify and architect the RF power chain (MW-class RF power conversion, distribution, waveguides, couplers) and coordinate with cryogenics on thermal load budgets (kW-level at cryo temperatures).
Drive preliminary engineering design, evaluate feasibility and tradeoffs, and lead design reviews; coordinate cross-functional deliverables (RF, cryo, targetry, controls, safety).
Author technical papers and contribute to the company's scientific publications, presenting research at scientific conferences and representing the program with external collaborators.
Establish working standards for modeling, data management, and verification/validation in collaboration with the broader physics and engineering teams.

What we're looking for:

PhD in Physics, Electrical Engineering, or a related field, with a focus on accelerator physics (or equivalent experience).
Deep understanding of beam dynamics and accelerator systems; hands-on experience with beamlines, synchrotrons, or storage rings.
Proficiency with accelerator and EM simulation tools (e.g., MAD-X, OPAL, elegant, GPT, CST/HFSS, COMSOL), CAD software (e.g. SolidWorks, AutoCAD), and scientific computing (Python/Matlab).
Broad familiarity with adjacent accelerator engineering: high-power RF systems, cryogenics, radiation shielding/safety, high-voltage interlocks.
Proven ability to lead complex technical programs as a senior IC: setting architecture, coordinating multi-disciplinary teams, making schedule/technical tradeoffs, and driving to results.
Excellent communication and presentation skills; ability to influence across functions and with external partners.
Comfort operating in a fast-moving, resourceful startup environment.

Preferred Qualifications (not required)

National lab experience or collaborations strongly preferred.
Muon physics or muon beamline design experience is a plus.

Details and Logistics:

This is a full-time, onsite role working from our facility in Cambridge, MA.
Travel (including international) a few weeks per year is required to partner labs and vendors.
Our benefits package includes health & dental insurance, retirement savings with company contribution, stock options, paid time off, and company holidays.
The salary range for this role is $120,000 to $160,000. This range represents the minimum and maximum base compensation Acceleron Fusion reasonably expects to pay for this position. The specific salary offered will be determined based on relevant factors including skills, experience, qualifications, and location. This position may also be eligible for additional compensation such as bonuses, equity, or other benefits.

Our interview process:

Initial video call with recruiter (30min)
Technical video call with members of our Physics team (45min)
Research presentation (60min)
In-person interview (~5hours including lunch with co-founders)

Acceleron Fusion is an equal opportunity employer, committed to building a welcoming, respectful, and inclusive workplace. We welcome applications from all qualified candidates regardless of background.

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More about this job

Skills

Research
Data management
Collaboration
Electrical engineering
CAD software
Dassault Systemes SolidWorks
Autodesk AutoCAD
Python
Communication skills
Presentation skills

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