
tem · United Kingdom
📈 Who We Are: We are rebuilding the energy transaction, making it transparent and fair. Our goal is to put power back where it belongs, in the hands of custo...
We are rebuilding the energy transaction, making it transparent and fair.
Our goal is to put power back where it belongs, in the hands of customers and to take on one of the most critical problems of our
century, access to low cost electricity.
tem exists to fix a broken global energy market that’s long favoured legacy operators, intermediaries, and opaque pricing. Today’s
electricity system was not designed for rapid decarbonisation, AI-driven efficiency or fair access for the actual users -
businesses and generators.
We’ve built the first AI native transaction infrastructure to reinvent how electricity is bought, sold and priced. Our technology
is designed to cut out the inefficient fees, automate complex market flows, and bring transparency and fairness to energy
transactions at scale.
In late 2025, after extraordinary growth, we closed a $75 million Series B - led by Lightspeed Venture Partners with participation
from Albion, Atomico, Allianz, Hitachi Ventures, Hitachi Ventures, Schroders Capital and others - positioning us for global
expansion, deeper product innovation and category leadership.
We’re scaling internationally and building toward a future where AI-driven infrastructure is foundational to electricity markets
worldwide.
Since launch, our modern utility product, known as RED, has already facilitated thousands of business customers and billions in
energy transaction value, proving that modern software and AI can transform an industry built on legacy systems.
At tem, we’re not just building another energy company, we’re rearchitecting market infrastructure so that transparency,
efficiency and sustainability become the default, not the exception.
🏅 The Role
We're hiring a Baseload Originator. Your job is to deliver consistent, high-quality generator deals that expand baseload-shaped
supply, deepen liquidity and pricing, and strengthen tem's credibility with asset owners and developers.
You'll grow our generator base across core tech types (anaerobic digestion, landfill gas, and energy from waste), owning
relationships end-to-end to improve deal velocity and reduce friction across commercials and onboarding. You'll act as a trusted
commercial counterpart to developers and asset owners, feed structured sell-side insight back into pricing and product, and
represent tem credibly in the broader generator ecosystem.
🚀 Responsibilities
contracts at pace.
management.
pricing depth.
alignment/
🎯 Requirements
asset managers.
✅ Success measures
✨ Benefits & Perks
🗣️ Interview Process
We move fast. Most processes take 2 to 3 weeks from first chat to offer. If you need us to adapt anything, let us know.
We welcome applications from people of all backgrounds, experiences, and identities, including those that are traditionally
underrepresented in the tech and energy sectors. If you’re excited about this role but not sure you meet every requirement, we’d
still love to hear from you. Your unique perspective could be exactly what we’re looking for.
What we do at Blykalla Blykalla is a Swedish deep-tech company at the forefront of the nuclear industry, pioneering the development of small modular reactors that provide clean, safe, and reliable energy. Thanks to lead-cooling, we achieve high safety in a very compact format, allowing for a simple and cost-effective design that can be mass-produced. Our unique reactor design will provide safe and green baseload energy that perfectly complements solar and wind power. What you’ll get to do As a Rotating Machine Lead Engineer, you will own the rotating equipment portfolio of the SEALER plant — from the Primary Coolant Pumps (PCPs) submerged in molten lead above 400 °C, where conventional bearing and sealing solutions don't apply, to the secondary-side feedwater and condensate pumps and the full set of auxiliary and safety-related pumps the plant requires. It is a technically demanding portfolio that spans genuinely novel engineering on the primary side and rigorous nuclear-grade discipline throughout: Define functional and design requirements for the full rotating equipment portfolio — PCPs in molten lead, secondary-side feedwater and condensate pumps, and all auxiliary, safety-related, and service pumps. Develop design basis documentation and lead trade-off studies on pump configuration, drive arrangement, sealing strategy, and bearing technology. Set priorities across the portfolio — distinguishing where Blykalla-specific engineering is warranted from where standard industrial solutions suffice. Act as Blykalla's technical counterpart to pump suppliers and engineering partners, challenging design choices and steering solutions to fit plant requirements across hydraulics, sealing, materials, and maintainability. Define the scope of hydraulic, rotordynamic, and structural analyses; brief specialists; and critically review their outputs. Use hand calculations to sanity-check results. Own supplier work packages: evaluate proposals, lead design reviews, and keep pump development aligned with plant requirements and schedule. Support test rig development when needed to advance tailor-made pumping solutions. Collaborate across internal teams and with academic and industrial partners. Who’ll you’ll get to work with The Rotating Machine Lead Engineer sits in the Fluid Systems Engineering Team within Blykalla, and reports to the Manager of Fluids Engineering. We are a diverse team that is passionate about our work and Blykalla. Who you are You will be part of a highly skilled team with a can-do attitude. We value personnel chemistry and strive to create a workplace where you enjoy coming to. There are however a few things that we think will help for you to succeed in this role, these are: More than 5 years of professional experience as a rotating equipment engineer. Degree in mechanical, energy, nuclear, or a closely related discipline. A meaningful portion of your experience at a pump manufacturer or rotating equipment OEM, ideally in a role combining hydraulic and mechanical design with workshop and field interface, or equivalent experience as a discipline lead on the operator or EPC side. Strong working knowledge of centrifugal and/or axial pump design, including rotordynamics, bearing selection, mechanical seals or seal-less concepts, and applicable design codes and standards such as API 610, API 682, ASME III, PED, or RCC-M. Hydraulic and mechanical fundamentals sufficient to steer and critically review calculations performed by specialists, including the ability to perform hand calculations on head, NPSH, power, and basic rotordynamics to sanity-check results. Comfort writing clear technical specifications, reviewing supplier deliverables critically, and managing a multi-vendor technical dialogue from concept through qualification. Familiarity with CAD tools and engineering software. Fluent in English, spoken and written. Fluency in Swedish is a plus. Meritorious skills: Hands-on experience with heavy liquid metal pumps (lead, lead-bismuth, sodium). Experience with reactor coolant pumps in light-water reactors. Experience with high-pressure feedwater or boiler feed pumps in conventional or nuclear steam plants. Familiarity with magnetic drives, canned-motor pumps, or other seal-less concepts. Experience with rotordynamic, CFD, or FEA analyses; the priority is the ability to define, commission, and review such analyses rather than execute them. Prior experience coordinating multidisciplinary design work or managing supplier technical interfaces. If you are not sure that you are 100% qualified but are up to the challenge, we encourage you to apply. Location This position is for our office in Stockholm. So, what do you think? Take the chance to be at the forefront of revolutionizing nuclear power. Join our team as Rotating Machine Lead Engineer and help shape the energy landscape of tomorrow. Apply today with your resume and a cover letter highlighting your relevant experience and achievements. We are proud to foster an inclusive workplace free from discrimination. We strongly believe that diversity of experience, perspectives, and background will lead to a better environment for our employees and a better product. This is something we value deeply and we encourage everyone to be a part of changing the way the world thinks about power supply! We do not accept applications via email. We are not open to external help from recruitment agencies.
WHO WE ARE Proxima Fusion is Europe’s fastest-growing fusion company and the continent’s best-funded fusion player, as well as the first spin-out from the Max Planck Institute for Plasma Physics (IPP). Backed by over €650M and powered by a growing team across Munich, Zurich, and Oxford, we are developing the hardware and infrastructure needed to deliver the world’s first commercial stellarator fusion power plant. Our concept advances the most mature fusion technology out there, the Wendelstein 7-X stellarator, through two next-generation machines: Alpha and Stellaris. Our work combines stellarator optimization, advanced computation, machine learning, and high-temperature superconducting magnets to unlock higher-performance designs that were previously out of reach. Turning these designs into a functioning fusion power plant requires excellence and ownership across every discipline, from physics and engineering to software, manufacturing, law, and business functions. WHY JOIN US * Work on a civilisation-scale problem - Clean, baseload fusion energy is one of the few genuinely world-changing challenges, and every hire in Finance, People, or Legal directly accelerates the path to a working stellarator. * Grow as fast as the company does - With headcount set to roughly 5x in a few years and major technical milestones ahead on the path to our demo machine and first power plant, your role grows under you; today's hire is tomorrow's function lead. * Tackle problems that don't exist elsewhere - Fusion sits at a rare intersection of deep-tech R&D, industrial procurement, government relations, and venture financing, so non-tech functions face challenges no other workplace can offer. YOUR IMPACT As a People Operations Specialist, you'll help build the operational foundation that enables our teams to thrive as we grow internationally. Your work will ensure our people processes are efficient, scalable, and employee-centric. WHAT YOU WILL DO * Coordinate day-to-day people operations so everything runs smoothly across regions. * Manage the administration of key employee lifecycle processes (onboarding, offboarding, etc.) and keep improving how they work. * Spot inefficiencies and suggest practical improvements that align with business priorities. * Use tools and systems to simplify people processes and make them more scalable. * Work closely with teams across the business to drive projects from start to finish. * Maintain clear SOPs and policies so people processes are consistent across locations. * Resolve day-to-day people queries around people topics * Partner effectively with external providers (payroll, benefits, etc.) to ensure smooth and reliable service delivery. * Track compliance and manage risks across the regions you support. WHO YOU ARE * Leading with empathy and sensitivity * Advanced knowledge of HRIS systems, particularly HiBob * Ability to handle complex projects, strong analytical skills, and attention to detail * Familiarity with AI-driven workflows and continuous improvement methodologies * Ability to handle sensitive and confidential information in a professional manner INTERVIEW PROCESS * Recruiter Interview (30-60 min) * Technical Screening (30 min) * Technical Panel (3x60 min) *This role sits at "PF2" of our framework, please inquire during the recruitment process for further information. At Proxima Fusion, our mission is bold: making limitless clean energy a reality. To get there, we need a high-performing, diverse team that brings different perspectives, challenges assumptions, and builds together with purpose. We know that diversity of thought and experience leads to better ideas, stronger execution, and a more resilient team. We don’t look at how you identify, what you look like, who you choose to worship or what ethnicity you are. We care about what you can bring to the table.