Paralegal at Xcimer Energy | Denver, CO

Xcimer EnergyDenver, CO

On-site Full-time

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Experience

Qualifications

Proven experience as a paralegal or in a relevant legal field. Strong understanding of legal terminology and procedures. Exceptional organizational skills and attention to detail. Ability to manage multiple tasks and meet deadlines. Excellent communication and interpersonal skills.

About the job

As a Paralegal at Xcimer, you will utilize your expertise to support our employees and the legal department across various legal domains. We seek individuals who can apply their technical skills, analytical thinking, and commitment to excellence to shape the future of energy positively!

About Xcimer Energy

Xcimer Energy is a pioneering company in the field of Inertial Fusion Energy, focused on providing innovative solutions for sustainable energy. We are committed to advancing fusion technology to combat climate change and achieve global decarbonization goals.

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Laser Scientist at Xcimer Energy | Denver, CO

Xcimer Energy

Full-time|On-site|Denver, CO

At Xcimer Energy, we are pioneering advancements in Inertial Fusion Energy (IFE) with innovative laser technology. Our vision is to rapidly deploy fusion power plants that contribute to global decarbonization efforts. We have curated an exceptional team of experts in tough tech, fusion science, and manufacturing, all committed to swift execution. Backed by p…

Feb 23, 2026

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Laser Engineer at Xcimer | Denver, CO

Xcimer Energy

Full-time|On-site|Denver, CO

At Xcimer Energy, we harness decades of pioneering research in Inertial Fusion Energy (IFE) and innovative laser technology to drive our mission of deploying fusion power plants, accelerating global decarbonization efforts. With a team of acclaimed experts in tough tech, fusion science, and advanced manufacturing, we are poised to deliver clean, limitless fusion power to address climate change challenges. Join us in revolutionizing the energy landscape with inertial fusion! As a Laser Engineer, you will utilize your specialized knowledge to design, construct, modify, and operate both new and existing pulsed laser systems. Your role will involve optimizing these systems by enhancing laser beam quality and collaborating with vendors to acquire essential hardware for specific upgrades. You will also assist optics engineers in aligning intricate laser beam paths, calibrating diagnostic equipment, and identifying opportunities for improved diagnostics. Writing specifications and collaborating with vendors to develop cutting-edge high-energy laser diagnostics will be key elements of your role. Additionally, you will maintain laser systems by realigning, diagnosing issues, and coordinating with vendors to resolve malfunctions swiftly. Conducting spectroscopic experiments, collecting and processing data, and working closely with experimentalists, theorists, optics engineers, and controls engineers will ensure the reliability of the systems in supporting experimental objectives. We seek innovative scientists and engineers who can leverage their technical expertise, problem-solving abilities, and commitment to excellence to make a meaningful impact on the future of energy!

Sep 22, 2025

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Lead Experimental Physicist at Xcimer Energy | Denver, CO

Xcimer Energy

Full-time|On-site|Denver, CO

About Xcimer Energy Xcimer Energy is advancing Inertial Fusion Energy (IFE) through research and laser technology, aiming to accelerate the rollout of fusion power plants. The company’s mission centers on supporting decarbonization goals and addressing climate change. Backed by leading investors, the team brings together specialists in fusion science, tough tech, and manufacturing to deliver clean fusion energy. Role Overview: Lead Experimental Physicist The Lead Experimental Physicist will guide complex laser-based experiments from initial concept through analysis. This position requires strong experimental physics expertise and the ability to quickly learn advanced systems. The role involves designing experiments, improving diagnostics, interpreting data, and finding new ways to increase experimental efficiency. Collaboration is central: work closely with scientists, engineers, and technical experts to drive major experimental projects forward. Key Responsibilities Design and execute advanced laser-based experiments Develop and refine diagnostic tools and methods Analyze experimental data and draw actionable conclusions Identify and implement improvements to experimental processes Work alongside a multidisciplinary team to achieve project goals Who We’re Looking For Scientists and engineers with strong technical skills in experimental physics Problem solvers interested in advancing energy technology Individuals eager to contribute to the future of sustainable energy Location Denver, CO

Apr 14, 2026

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Paralegal at Xcimer Energy | Denver, CO

Xcimer Energy

Full-time|On-site|Denver, CO

At Xcimer Energy, we are at the forefront of innovation in Inertial Fusion Energy (IFE), fueled by decades of pioneering research paired with cutting-edge laser technology. Our vision is to rapidly deploy fusion power plants to meet global decarbonization targets, contributing to a sustainable energy future. With a team composed of leaders in technology, fusion science, and manufacturing, we are dedicated to executing our mission efficiently and effectively. Supported by top-tier investors, Xcimer is uniquely positioned to provide abundant, clean fusion energy to tackle climate change. Join us in our quest to power a better world with inertial fusion!As a Paralegal at Xcimer, you will utilize your expertise to support our employees and the legal department across various legal domains. We seek individuals who can apply their technical skills, analytical thinking, and commitment to excellence to shape the future of energy positively!

Jan 28, 2026

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Chief of Staff, Engineering at Xcimer Energy | Denver, CO

Xcimer Energy

Full-time|On-site|Denver, CO

Xcimer Energy is at the forefront of revolutionizing energy with decades of research in inertial fusion energy (IFE) and a unique, scalable laser architecture aimed at delivering commercially viable fusion power plants. Our mission is to accelerate the deployment of fusion energy to significantly contribute to global decarbonization efforts. As our engineering department expands from six to ten and beyond, we are on the lookout for a Chief of Staff, Engineering. This pivotal role involves close collaboration with the SVP of Engineering to enhance execution, bolster operational rigor, and ensure seamless alignment across our rapidly growing technical teams. In the capacity of Chief of Staff, Engineering, you will serve as both an operational and strategic partner to the SVP of Engineering. Your responsibilities will include driving cross-departmental coordination and planning, refining execution processes, and ensuring visibility into organizational priorities, risks, and advancements. Additionally, your role will enhance leadership efficiency by managing key projects, facilitating communication, and promoting organizational cohesion.

Mar 30, 2026

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Senior Accountant at Xcimer Energy | Denver, CO

Xcimer Energy

Full-time|On-site|Denver, CO

At Xcimer Energy, we harness decades of research in Inertial Fusion Energy (IFE) alongside innovative laser technology to revolutionize energy production. Our mission is to expedite the deployment of fusion power plants, contributing to global decarbonization efforts. With a team of leaders in challenging technologies, fusion science, and manufacturing, we are committed to executing our vision swiftly and effectively. Backed by prominent investors, Xcimer is uniquely positioned to deliver clean, limitless fusion energy to tackle climate change. Join us in our quest to empower a sustainable future through inertial fusion!As a Senior Accountant, you will play a pivotal role in managing our comprehensive accounting functions, including general ledger maintenance, accounts payable oversight, auditing, and ensuring compliance with regulatory standards. You will establish and maintain robust financial controls, policies, and reporting systems designed to safeguard company assets. This role also involves collaborating with team members to enhance cost accounting processes and facilitating the transition of our accounting infrastructure to advanced enterprise systems, including ERP and compliance tools. We seek a seasoned accountant with a passion for problem-solving and a commitment to quality, ready to make a significant impact in the energy sector!

Mar 5, 2026

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Project Delivery Manager at Xcimer | Denver, CO

Xcimer Energy

Full-time|On-site|Denver, CO

At Xcimer Energy, we are pioneering the future of energy through our innovative approach to Inertial Fusion Energy (IFE) and advanced laser technology. Our mission is to rapidly deploy fusion power plants to achieve global decarbonization objectives. With a dynamic team of experts in tough tech, fusion science, and manufacturing, we are positioned to revolutionize the energy landscape and combat climate change. Join us in our quest to create a cleaner, sustainable world powered by inertial fusion!This is a full-time, onsite position located at our headquarters in Denver, CO.As the Project Delivery Manager, you will oversee the execution of a significant element within a multi-billion-dollar development initiative. Collaborating closely with the Element Director, you will play a crucial role in daily project delivery, addressing challenges proactively, ensuring that project commitments are fulfilled, and providing leadership with transparent insights into schedule and financial performance. We seek project coordinators who can leverage their technical skills, problem-solving abilities, and commitment to excellence to drive positive change in the energy sector!

Mar 3, 2026

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PLM Administrator at Xcimer Energy | Denver

Xcimer Energy

Full-time|On-site|Denver, CO

Xcimer Energy is at the forefront of developing Inertial Fusion Energy (IFE) technologies, utilizing decades of research along with innovative laser architecture. Our commitment is to rapidly deploy fusion power plants that align with global decarbonization initiatives. Our exceptional team, composed of leaders in tough tech, fusion science, and manufacturing, boasts a proven record of swift execution. Backed by prominent investors, Xcimer is uniquely positioned to deliver boundless, clean fusion power as a solution to climate change. Join us in our mission to create a sustainable future through inertial fusion!We are in search of a dedicated PLM Administrator who will take charge of the configuration, customization, and operation of Teamcenter, as well as the entire engineering digital thread—from part creation through procurement, manufacturing, and consumption of digital work orders.This pivotal role will enhance Xcimer's digital ecosystem across Teamcenter, Violet Labs, Boltline, Precoro, and various lifecycle and manufacturing systems. You will be responsible for installing, configuring, and optimizing Teamcenter environments, removing process bottlenecks, and ensuring precise, automated data flow between engineering and other departments.We seek a thought leader who is enthusiastic about:· Crafting sophisticated and scalable engineering workflows,· Developing a robust and traceable digital thread, and· Establishing the certification and regulatory groundwork for the next generation of commercial fusion power plants.Your contributions will be instrumental in accelerating the engineering-to-hardware cycle, helping us fulfill our vision of transforming the future of global energy!

Dec 9, 2025

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Senior Cryogenic Engineer at Xcimer | Denver, CO

Xcimer Energy

Full-time|On-site|Denver, CO

Xcimer Energy develops Inertial Fusion Energy (IFE) technology in pursuit of practical, clean fusion power. The team brings together decades of research experience and advanced laser systems to accelerate the deployment of fusion power plants that support global decarbonization. Role Overview The Senior Cryogenic Engineer will lead the development of deuterium–tritium (DT) fuel handling and target filling systems for Xcimer’s Vulcan and Athena programs. This work is central to producing reliable, repeatable cryogenic targets and supporting high-repetition-rate fusion experiments. What You Will Do Design, integrate, and operate DT filling systems for fusion target production Work closely with teams specializing in cryogenics, target fabrication, tritium handling, and experimental operations Support the creation of systems that enable consistent, high-quality cryogenic targets for experimental campaigns Who We’re Looking For Xcimer seeks engineers with strong technical skills, practical problem-solving abilities, and a drive for excellence. Experience with cryogenic systems, fuel handling, or related experimental operations is valuable. Location This position is based in Denver, CO.

Apr 15, 2026

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General Application for Engineers and Scientists at Xcimer Energy

Xcimer Energy

Full-time|On-site|Denver, CO

Are you passionate about innovative energy solutions? At Xcimer Energy, we welcome your interest even if you don't see a specific job opening that fits your profile.We're constantly on the lookout for exceptional engineers, scientists, technicians, and other talented individuals who are eager to contribute to our mission of delivering clean, safe, and abundant energy through cutting-edge laser-driven inertial fusion technology. If you thrive on solving complex challenges from inception to completion, we want to hear from you!Xcimer Energy combines decades of research in Inertial Fusion Energy (IFE) with innovative laser architecture to accelerate the deployment of fusion power plants, aimed at meeting global decarbonization targets swiftly. Our team consists of leaders in tough tech, fusion science, and manufacturing, all committed to rapid execution. With the support of leading investors, Xcimer is uniquely equipped to provide limitless, clean fusion power to tackle climate change. Join us in our quest to power a sustainable future!We invite talented engineers, scientists, and technicians to apply their technical skills, problem-solving abilities, and commitment to quality to make a lasting impact on the future of energy!

Oct 12, 2023

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Lead Laser Beamline Engineer

Xcimer Energy

Full-time|On-site|Denver, CO

At Xcimer Energy, we harness decades of pioneering research in Inertial Fusion Energy (IFE) and cutting-edge laser technology to revolutionize energy production. Our mission is to accelerate the deployment of fusion power plants to meet global decarbonization objectives promptly. With a formidable team of experts in advanced technology, fusion science, and manufacturing, Xcimer is poised to deliver unlimited, clean fusion energy to tackle climate change. Join us in leading the charge towards a sustainable future powered by inertial fusion! As the Lead Laser Beamline Engineer, you will be responsible for the optimal functioning of the Phoenix beamlines, which include a sophisticated array of seed lasers and optical systems. Your role will involve collaborating with the Xcimer science team to schedule beamline operations for experiments, maintenance, and system enhancements. You will lead a talented team of engineers and technicians to ensure the laser and optical systems are ready for essential testing phases. Additionally, you will conduct post-experiment data reviews to verify system performance and identify any necessary adjustments prior to upcoming experiments. Beyond your responsibilities as Lead Laser Beamline Engineer, you will have the opportunity to learn from our subject matter experts and be among the first to qualify for a position on the shot operations team. Once qualified, you will join the shot operations team for select Phoenix experiments, where you will guide system controllers and operators in executing critical procedures during our laser experiment operations. We seek a Lead Laser Beamline Engineer who will leverage their technical expertise, problem-solving abilities, and commitment to excellence to make a meaningful impact on the future of energy!

Mar 20, 2026

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Senior Test Engineer – Laser System Operations

xcimer

Full-time|On-site|Denver, CO

Role overview The Senior Test Engineer on the Laser System Operations team at xcimer in Denver, CO will take the lead in testing and validating advanced laser systems. This position plays a key role in maintaining quality and driving improvements in system performance and reliability. What you will do Direct testing and validation activities for laser systems Work closely with cross-functional teams to ensure quality standards are met Contribute to ongoing efforts to improve system performance and reliability

Apr 27, 2026

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Program Director of Directed Energy

Xcimer

Full-time|On-site|Denver, CO

As the Program Director of Directed Energy at Xcimer, you will lead and oversee cutting-edge projects in the field of directed energy systems. Your role will encompass strategic planning, project management, and technical oversight to ensure the successful execution of innovative energy solutions. You will collaborate with cross-functional teams, stakeholders, and industry partners to drive initiatives that will revolutionize energy applications.

Mar 13, 2026

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Experimental Physicist - Optical Imaging and Spectroscopy

Xcimer Energy

Full-time|On-site|Denver, CO

Xcimer Energy is at the forefront of Inertial Fusion Energy (IFE) innovation, harnessing decades of research and pioneering laser technology. Our mission is to rapidly deploy fusion power plants to achieve global decarbonization goals. With a team of experts in advanced technology, fusion science, and manufacturing, Xcimer is strategically positioned to provide limitless, clean fusion energy to combat climate change. Join us in our quest to power a sustainable future through inertial fusion!As an Experimental Physicist specializing in optical imaging and spectroscopy, you will work closely with a team of engineers and scientists to identify and address the challenges of constructing high-energy pulsed laser systems. You will propose and design experiments focused on advanced imaging and spectroscopic techniques, including pulsed plasma imaging and high-speed imaging of atoms and molecules. Your role will include training technicians and junior scientists to conduct experiments and leading various projects while collaborating with architecture, science, and engineering teams. You will also analyze experimental data and work with theoretical teams to enhance our understanding of various processes.

Mar 24, 2026

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IT Support Technician

xcimer

Full-time|On-site|Denver, CO

Join our dynamic team at xcimer as an IT Support Technician, where you will play a crucial role in maintaining and enhancing our IT infrastructure. You will be the first point of contact for technical support, assisting employees with hardware and software issues, and ensuring seamless operations across the organization. Your expertise will help us leverage technology effectively to improve productivity and efficiency.

May 1, 2026

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Program Director, Site and Structures

xcimer

Full-time|On-site|Denver, CO

xcimer is hiring a Program Director, Site and Structures in Denver, CO. This leadership role centers on managing and guiding key site and structural projects that support the company’s infrastructure goals. Role overview The Program Director provides strategic oversight for a portfolio of site and structural programs. The position is responsible for ensuring projects are executed efficiently and delivered on schedule, while maintaining high standards of quality and safety. Collaboration Expect to work closely with cross-functional teams, external partners, and stakeholders. Building strong relationships and clear communication will be essential to drive project outcomes and align efforts across groups. Key focus areas Strategic management of site and structure initiatives Oversight of project execution and delivery Ensuring adherence to quality and safety standards Collaboration with internal teams and external partners

Apr 29, 2026

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Lead Experimental Physicist for the Vulcan Fusion Initiative

Xcimer Energy

Full-time|On-site|Denver, CO

At Xcimer Energy, we harness decades of pioneering research in Inertial Fusion Energy (IFE) and innovative laser architecture to revolutionize energy production. Our commitment is to expedite the deployment of fusion power plants, aligning with global decarbonization objectives. With a team comprised of industry leaders in advanced technologies, fusion science, and manufacturing, we are poised to deliver a sustainable, clean energy solution to combat climate change. Join our mission to create a brighter future through inertial fusion! As a Lead Experimental Physicist, you will spearhead the design, execution, and analysis of pivotal experiments within Xcimer’s Vulcan fusion program, aimed at achieving wall plug breakeven. This role requires translating the theoretical physics and risk mitigation strategies into actionable experiments, managing diagnostic specifications, and formulating test plans for Vulcan that ensure the facility and subsystem readiness for ignition physics.As the inaugural experimentalist of the program, your expertise will bridge the domains of physics, engineering, and systems integration. You will ensure that the design, diagnostics, and experimental frameworks of Vulcan are meticulously aligned with the Fusion Pilot Plant's physics foundation. We seek scientists who are eager to apply their leadership, technical acumen, analytical thinking, and commitment to excellence to shape the future of energy!

Oct 20, 2025

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Senior R&D Engineer at Renewell Energy | Denver, Colorado

Renewell Energy

Full-time|$100K/yr - $250K/yr|On-site|Denver, Colorado, United States

Join Renewell Energy and lead the charge in transforming the energy storage and well remediation landscape.Our innovative technology is making strides in combating the climate crisis by converting dormant oil and gas wells into gravity-based energy storage solutions—delivering dependable renewable energy while rehabilitating millions of inactive wells across the United States.This is a unique chance to become one of the foundational members of a mission-driven startup poised for significant growth, having raised approximately $15 million to date (from VCs, the US Department of Energy (ARPA-E), CEC, and others). With recent regulatory changes in three states and anticipated deployment scaling by 5 to 11 times over the next two years, our team is on the brink of groundbreaking advancements. If you are passionate about hands-on engineering, inventive problem-solving, and advancing a revolutionary technology in a fast-paced environment, we would love to hear from you.Role Overview: As the Senior R&D Engineer, you will spearhead the design, prototyping, testing, and optimization of our innovative energy storage systems (with only one currently public). You will take ownership of critical technical projects, collaborate with both internal and external partners, and facilitate the transition of our concepts into market-ready solutions. This role is dynamic, highly hands-on, and growth-oriented—ideal for engineers eager to tackle substantial technical challenges with ingenuity and diligence. Being part of a rapidly expanding startup, you will be encouraged to swiftly broaden your skillset and explore leadership opportunities.

Feb 28, 2026

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Mechanical Engineer

xcimer

Full-time|On-site|Denver, CO

xcimer is looking for a Mechanical Engineer to join the team in Denver, CO. This role centers on designing, developing, and testing mechanical systems and devices that meet the company’s standards for both functionality and efficiency. Key responsibilities Design and refine mechanical systems to support project objectives Develop and test devices to achieve set performance targets Offer technical expertise to support ongoing engineering projects The work in this position plays a direct part in advancing xcimer’s engineering projects and overall success.

Apr 24, 2026

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Optical Control Systems Engineer

xcimer

Full-time|On-site|Denver, CO

About the Role xcimer is hiring an Optical Control Systems Engineer in Denver, CO. This position focuses on designing and implementing optical control systems that support advanced technology development. The work centers on applying knowledge of optics and control systems to create practical solutions for complex engineering challenges.

Apr 16, 2026

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