We build lasers for commercial fusion energy and next-generation defense.
Denver, CO
We're developing an excimer-based laser fusion architecture to commercialize safe, affordable fusion energy while advancing national security. We employ nearly 200 people, mostly in our Denver headquarters. We're funded by leading energy investors and the U.S. Department of Energy. Join us: https://xcimer.energy/careers/
On-site · Quinte West
Interns will contribute to the design and development of hardware and software for inertial fusion energy systems. Responsibilities include performing mechanical and thermal analysis, systems engineering, and supporting various engineering disciplines such as optics, pulsed power, and plasma physics.
On-site · Quinte West
Interns will contribute to the design and development of laser-driven inertial fusion hardware and software systems. Responsibilities include performing mechanical and thermal analysis, systems engineering, and supporting various engineering disciplines such as electrical, optical, and nuclear.
On-site · Quinte West
Interns will contribute to the development of laser-driven inertial fusion hardware and software systems for a commercial power plant. Responsibilities include performing mechanical and thermal analysis, systems engineering, and conducting research in fields such as plasma physics and pulsed power.
On-site · Quinte West
Interns will contribute to the development of systems for a commercial fusion energy power plant by working on hardware and software engineering tasks. Responsibilities include mechanical design, thermal analysis, pulsed power development, and computational simulations under the guidance of an industry expert.
On-site · Quinte West
Interns will contribute to the development of hardware and software systems for a commercial fusion energy power plant. Responsibilities include performing mechanical and thermal analysis, systems engineering, and computational simulations under the guidance of an industry expert mentor.
On-site · Quinte West
You will build and maintain data pipelines and integrations across various engineering and business systems to drive informed decision-making. Additionally, you will collaborate with cross-functional teams to develop tools and dashboards that streamline workflows and improve operational efficiency.
On-site · Quinte West
The engineer will own and develop a virtual beamline digital twin for fusion laser architecture, collaborating with cross-functional teams to refine hardware requirements. They will also perform system-level trade studies, sensitivity analyses, and implement rigorous code validation checks.
On-site · Quinte West
The role involves developing and implementing multi-material radiation hydrodynamics models to support inertial confinement fusion research. You will collaborate with scientists and engineers to verify and validate numerical methods within the company's simulation codebase.
On-site · Quinte West
The Senior Thermal Analyst will lead thermal and CFD analysis for fusion energy systems, evaluating cooling architectures and heat loads to drive design decisions. They will collaborate with engineering teams to integrate thermal behavior into component designs and support hardware testing through troubleshooting and model validation.
On-site · Quinte West
You will design and maintain the internal developer platform, including data pipelines, research environments, and HPC simulation interfaces. Additionally, you will architect scalable infrastructure, manage cloud resources, and mentor junior engineers to ensure reliable and efficient research operations.
On-site · Quinte West
Lead the design and development of software systems for scientific analysis, visualization, and machine learning to support R&D. Partner with researchers to translate experimental requirements into scalable, production-quality software solutions.
On-site · Quinte West
The Director of Fusion Nuclear Science will lead the scientific department, defining the roadmap for fusion chamber dynamics, blanket multi-physics, and tritium science. This role involves building and mentoring a world-class scientific team while translating research into actionable design guidance for engineering teams.
On-site · Quinte West
The Head of Diagnostics Physics will provide strategic and technical leadership for all diagnostic systems, overseeing scientific efforts in imaging and spectroscopy for fusion power plants. This role involves building and mentoring a multidisciplinary team while ensuring diagnostic systems are reliable, scalable, and integrated into the broader fusion program.
On-site · Quinte West
The Laser and Optics Controller will operate, troubleshoot, and maintain laser and optical components for the Phoenix laser system. They will also work with the Shot Director to execute critical procedures and perform hands-on system upgrades and maintenance.
On-site · Quinte West
The Vice President of Human Resources will serve as a strategic advisor to the executive team, developing and executing a comprehensive people strategy to support the company's rapid growth. This role involves leading all HR functions, including organizational design, leadership development, total rewards, and culture building to ensure operational excellence.
On-site
Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supported by leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change. Join us in powering a better world with inertial fusion! This is a full-time, onsite role based at our headqu…
On-site · Quinte West
The role focuses on the science and engineering of electron-beam cathode systems to maximize beam efficiency and energy deposition for inertial fusion energy. Responsibilities include leading cathode development, designing beam transport structures, and managing experimental campaigns from concept through commissioning.
On-site · Quinte West
The Head of Quality will lead the development, governance, and continuous improvement of the Quality Management System while fostering a data-driven quality culture. They will oversee Quality Engineering, Quality Assurance, Quality Control, and Supplier Quality functions to ensure product integrity and process robustness.
On-site · Quinte West
Technically lead the design, procurement, and integration of a high-speed custom adaptive optics system for advanced laser beamlines. Serve as the technical authority for adaptive optics, managing vendor relationships and guiding the growth of the internal AO group.
On-site · Quinte West
Lead the Optical Engineering department in the design, development, and commissioning of UV laser optical systems for inertial fusion. Manage a high-performing team while providing technical direction for laser beamlines, diagnostics, and adaptive optics.
