Full-Time
Senior Radiation Safety Engineer
Updated on 8/7/2026
Focused
51-200 employees
Laser-driven inertial confinement fusion for power
No salary listed
Darmstadt, Germany
In Person
 Electrical Engineering (1) |
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- Strong expertise in radiation protection, shielding, and dosimetry, preferably with pulsed neutrons, with experience in medical or industrial radiation facilities, accelerator-like systems, high-energy physics facilities, X-ray systems, neutron or gamma radiation environments, or comparable regulated technical environments.
- Experience with shielding, dose, and activation analyses using Monte Carlo methods such as MCNP, FLUKA, GEANT4, or PHITS.
- Experience with shielding design, dose estimation, radiation monitoring, access control, controlled areas, safety interlocks, commissioning, and operating procedures.
- Understanding of radiation protection principles, regulatory requirements, documentation standards, and authority-facing communication.
- Understanding of control systems and safety interlocks.
- Solid grounding in ALARA principles and radiation measurement techniques.
- Ability to communicate with regulatory authorities in German.
- Strong analytical capability.
- Structured working style.
- Clear written and verbal communication.
- Build the radiation safety framework for SourceLight/LDRS, including governance, responsibilities, procedures, documentation, review processes, and escalation paths.
- Design, specify, and validate radiation shielding for LDRS facilities.
- Define, implement, and maintain radiation monitoring and dosimetry systems.
- Own the integration of radiation protection systems with controls and building infrastructure.
- Own radiation safety documentation and licensing submissions.
- Conduct or supervise radiation measurements during commissioning and operation.
- Act as or support the Radiation Safety Officer, including audits and investigations.
- Lead radiation safety input into design reviews, commissioning reviews, operational readiness reviews, change processes, and customer deployment concepts.
- Act as the functional owner for radiation safety topics within SourceLight/LDRS.
- Act as a trusted safety authority across engineering and operations.
- Communicate radiation risks clearly to technical and non-technical stakeholders.
- Experience with pulsed neutrons.
Focused Energy pursues commercial fusion power using laser-driven inertial confinement fusion (ICF). Laser pulses compress tiny fuel pellets to the extreme conditions needed for fusion, with the aim of producing carbon-free electricity in a controllable, earthbound setting. The company combines expertise in high-energy lasers, plasma physics, materials science, and power-plant engineering to design lasers, optimize fuel, and build integrated prototypes with scientific and industrial partners to scale toward power generation. Their goal is to achieve commercial readiness in the coming decades and provide safe, abundant carbon-free electricity as part of the global energy mix.
Company Size
51-200
Company Stage
Series A
Total Funding
$326.6M
Headquarters
Darmstadt, Germany
Founded
2021
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Simplify's Take
What believers are saying
- Focused Energy raised $240 million on May 27, 2026, the sector’s largest Series A.
- RWE led the round, and Hesse pledged €20 million for fusion R&D.
- March 20, 2026’s $6.9 million Rochester partnership accelerates ignition physics and pilot-plant design.
What critics are saying
- Fusion commercialization still lacks a grid-connected power plant, leaving Focused Energy pre-revenue for years.
- Laser fusion still battles instability losses; a 2026 University of Rochester project targets that bottleneck.
- Biblis’ $5-7 billion plant path creates capital intensity that can stall before 2035.
What makes Focused unique
- Focused Energy won Germany’s 2026 Biblis site, pairing fusion plans with RWE infrastructure.
- Its laser-driven ICF approach leverages National Ignition Facility know-how and Rochester’s OMEGA-class facilities.
- A 2026 SourceLight spin-off turns fusion diagnostics into industrial non-destructive testing revenue.
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Growth & Insights and Company News
6 month growth
↓ -3%1 year growth
↓ -5%2 year growth
↓ -7%A German company developing laser fusion technology has secured significant funding and acquired a decommissioned nuclear power plant to advance its work. Focused Energy, which specialises in a variant called inertial confinement fusion, has completed a Series A funding round worth DKK 1.7 billion. The company plans to use the shuttered German nuclear power plant as a facility for producing electricity from laser fusion. Fusion power holds enormous potential as an energy source but remains an unsolved challenge for humanity. Focused Energy is among several companies working to make fusion power commercially viable. The acquisition of the former nuclear facility provides the company with infrastructure to develop and test its fusion technology.
Focused Energy has completed a $240 million Series A round, the largest fully secured Series A in the global fusion industry, with participation from Lowercarbon Capital. The hard-tech investor, founded by Chris and Crystal Sacca, joins existing backers including RWE, Germany's SPRIND, the European Innovation Council Fund, Futury Capital, EastX Ventures and Prime Movers Lab. The Austin and San Francisco-based laser fusion company has progressed from startup to global industry leader in four years. The investment comes amid surging energy demand driven by AI data centres, which are pushing electricity consumption beyond current grid capacity. Focused Energy is positioning laser fusion as a commercially viable solution, offering on-demand, carbon-free power. The company is already in discussions with potential partners in the technology sector.
Hessen's economic minister Kaweh Mansoori has presented a €20 million funding grant to Focused Energy, a laser fusion company based in Darmstadt. The funding will support measures laying the groundwork for future construction and operation of a fusion power plant. The investment signals Hessen's economic policy goal to establish itself as a leading location for laser fusion technology. The grant demonstrates confidence in Focused Energy's technological potential and expectations of long-term economic benefits for the region. Focused Energy is developing laser fusion technology, an approach to generating clean energy through nuclear fusion reactions.
Many European startups consider relocating to the United States following successful early-stage funding from regional investors. The motivations extend beyond market access to include a broader investor base, easier access to venture capital financing, higher valuations and the Nasdaq technology exchange as a potential exit channel. However, one crucial factor often drives the decision: investors frequently require a US legal structure. This requirement can be decisive in determining whether startups make the transatlantic move. The article is a guest contribution by Henning Bloss, Jörn Hirschmann and Ansgar Simon, examining the complexities and considerations involved in relocating a startup to America. For European founders, understanding these requirements and opportunities is essential when planning international expansion and future funding rounds.
RWE has invested €10 million in laser fusion startup Focused Energy, aligning with Germany's High-Tech Agenda for fusion research. This partnership aims to develop the Biblis site into a leading laser fusion campus. The Federal Agency for Breakthrough Innovations (SPRIND) also supports Focused Energy. Since July 2024, RWE and Focused Energy have collaborated on a pilot project for laser-driven radiation sources, crucial for future fusion power plants.