Established in London in 2018, Fourier are a team of experienced recruiters specialising in information technology, trading technology and quant analytics. We provide contract and permanent personnel to clients including investment banks, proprietary traders, hedge funds and fintech’s.

fourier-ltd

Fourier is working to make on-site hydrogen universally accessible. Our breakthrough architecture enables highly modular and automated electrolyzers that scale to any size while optimizing efficiency across operating conditions. We are on a mission to accelerate the transition to a sustainable, emission-free energy future.<h2>About the Role</h2>We are seeking a highly hands-on Senior Electronics &amp; Electrical Lab Technician / Lead to join our lean R&amp;D and manufacturing team.This is a technical leadership role for someone who enjoys being close to the hardware and can own the build, testing, troubleshooting, and validation of complex electrical and electronic systems. You will work closely with electrical, power electronics, mechanical, controls, and manufacturing engineers to bring prototypes and one-of-a-kind assemblies from concept through testing and deployment, including development of internal test systems for Fourier's electrolyzer stacks.You will also mentor junior technicians, establish best practices, and help ensure work is performed safely, accurately, and efficiently. The ideal candidate is comfortable with both low- and high-voltage systems, has hands-on experience with electrical safety and Hi-Pot testing, and can independently troubleshoot hardware from component to system level.<h2>Responsibilities</h2><h3>Technical Leadership &amp; Lab Operations</h3><ul style="min-height:1.5em"><li>Own electrical and electronics lab activities, ensuring safe, accurate, and efficient execution.</li><li>Lead and mentor junior Electronics and Electrical Technicians.</li><li>Establish best practices for electrical assembly, testing, instrumentation, documentation, and lab safety.</li><li>Support prioritization and coordination of hands-on activities across multiple projects.</li><li>Maintain lab equipment, tools, instrumentation, calibration, and consumables.</li></ul><h3>Electrical &amp; Electronics Build, Test &amp; Troubleshooting</h3><ul style="min-height:1.5em"><li>Build, wire, instrument, test, and troubleshoot prototype and production electrical/electronic assemblies.</li><li>Work with low- and high-voltage AC/DC systems and high-energy equipment.</li><li>Perform electrical safety testing, including Hi-Pot/dielectric withstand, insulation resistance, continuity, and grounding tests.</li><li>Use oscilloscopes, multimeters, power supplies, electronic loads, data acquisition systems, and other laboratory equipment.</li><li>Troubleshoot electrical and electronic issues at the component, PCB, subsystem, and system level.</li><li>Read and interpret schematics, wiring diagrams, mechanical drawings, BOMs, and engineering documentation.</li><li>Support harness development and production.</li></ul><h3>Test Development &amp; Prototype Manufacturing</h3><ul style="min-height:1.5em"><li>Partner with engineers to develop electrical/electronic test methods, fixtures, test stands, and procedures.</li><li>Translate engineering requirements into practical and repeatable test setups.</li><li>Design, fabricate, wire, instrument, and commission experimental and production test equipment.</li><li>Own hands-on assembly and testing of one-of-a-kind and low-volume manufacturing hardware.</li><li>Build custom electrical panels, wiring harnesses, control systems, instrumentation, and prototype assemblies.</li><li>Support first builds and transition successful prototypes into repeatable manufacturing processes.</li><li>Develop SOPs, work instructions, inspection criteria, and test documentation.</li><li>Identify design, assembly, and test issues and drive corrective actions with engineering.</li></ul><h3>Safety, Documentation &amp; Collaboration</h3><ul style="min-height:1.5em"><li>Maintain a safe, clean, organized, and highly functional laboratory.</li><li>Develop and maintain SOPs, test procedures, checklists, and technical documentation.</li><li>Ensure accurate test data, hardware configuration, and traceability.</li><li>Follow and help establish electrical safety and lockout/tagout practices.</li><li>Collaborate closely with R&amp;D, electrical, power electronics, mechanical, controls, and manufacturing teams.</li><li>Clearly communicate test results, failures, observations, and recommendations.</li><li>Provide practical hands-on input during design reviews and help drive continuous improvement.</li></ul><h2>Qualifications</h2><h3>Required</h3><ul style="min-height:1.5em"><li>5+ years of hands-on experience in electronics, electrical systems, laboratory testing, manufacturing, or a related field.</li><li>Demonstrated ability to independently own hardware or technical projects from build through testing and troubleshooting.</li><li>Strong experience building, wiring, testing, and troubleshooting electrical/electronic assemblies.</li><li>Ability to read electrical schematics, wiring diagrams, and engineering drawings.</li><li>Experience with common laboratory equipment such as oscilloscopes, multimeters, power supplies, electronic loads, and data acquisition systems.</li><li>Hands-on experience with Hi-Pot/dielectric withstand and electrical safety testing.</li><li>Strong hardware troubleshooting and root-cause analysis skills.</li><li>Ability to work safely around high-voltage and high-energy systems.</li><li>Strong organization, documentation, communication, and collaboration skills.</li><li>Ability to work independently while providing technical guidance to others.</li></ul><h3>Preferred</h3><ul style="min-height:1.5em"><li>Experience with both low- and high-voltage AC/DC systems.</li><li>Experience with high-power electrical systems or power electronics.</li><li>Experience developing test fixtures, test stands, or automated testing systems.</li><li>Experience with prototype, R&amp;D, first-of-a-kind, or low-volume manufacturing.</li><li>Experience with electrical panels, cabinets, harnesses, instrumentation, or industrial equipment.</li><li>Component-level PCB troubleshooting experience.</li><li>Experience with data acquisition or test scripting.</li><li>Experience in a startup or fast-paced R&amp;D environment.</li><li>Associate's or Bachelor's degree in Electrical Engineering, Electronics, Engineering Technology, or related field.</li></ul><h2>What We're Looking For</h2><ul style="min-height:1.5em"><li>Technical ownership: You take problems from identification through resolution.</li><li>Hands-on expertise: You enjoy building, testing, and debugging real hardware.</li><li>Safety mindset: You understand the discipline required to work with high-voltage and high-energy systems.</li><li>Builder mentality: You can turn engineering concepts into functioning assemblies and test setups.</li><li>Problem solver: You enjoy finding out why something doesn't work.</li><li>Technical leader: You help less experienced technicians grow and become more independent.</li><li>Adaptability: You are comfortable working with new and evolving hardware.</li><li>Team player: You collaborate effectively across engineering and manufacturing.</li></ul><h2>What We Offer</h2><ul style="min-height:1.5em"><li>Fully paid Medical, Dental, and Vision coverage</li><li>Competitive salary and equity compensation</li><li>401(k)</li><li>Paid sick days and vacation</li><li>Diverse and inclusive work environment</li><li>Opportunity to work directly on breakthrough hydrogen technology in a highly hands-on R&amp;D environment</li></ul>

Senior Electronics & Electrical Lab Technician / Lead

<h1>VP of Business Development</h1>Fourier is working on making on-site Hydrogen universally accessible. Our breakthrough architecture enables highly modular and fully automated Hydrogen cells that scale to any size and optimized efficiency at all loads. We are on a mission to transition the global energy landscape towards a purely sustainable and emission free future.<h2>About the Role</h2>Fourier seeks a commercial leader to lead our sales and Go-to-Market strategy. You will be responsible for the company’s commercial growth and deployment of early Fourier devices into customer locations. Ideal candidates will have a strong commercial background, possessing the ability to connect and empathize with Fourier’s customers to instill confidence in Fourier’s system.Crucially, this is a "player-coach" role for our early commercialization stage. You will act as a hands-on individual contributor to hunt, negotiate, and close our first major deployments, followed by building and scaling a world-class business development team as the company grows.<h2>Roles and responsibilities</h2><ul style="min-height:1.5em"><li>Reporting to the CEO, serve as part of the core leadership in defining the strategy and implementation of Fourier’s commercial growth plan.</li><li>Own the top-of-funnel Go-To-Market strategy, aggressively building our initial pipeline into new use cases like power storage and data centers, while continuing to refine Fourier’s Ideal Customer Profile (ICP).</li><li>Act as the primary closer for our early deployments, hands-on leading commercial negotiations, pilot agreements, and offtake agreements, while shaping Fourier’s pricing strategy.</li><li>Own the company’s commercial roadmap and aid with raising capital to support it.</li><li>Build and scale a world-class business development team and develop future leaders to grow and scale with the company.</li><li>Support other Fourier team members on customer meetings and visits, as necessary.</li><li>Champion new ideas, technologies, and directions while steering the team towards execution and meeting commercial targets.</li><li>Define goals and targets for the commercial group and ensure overall company commercial targets are being met.</li><li>Identify and coordinate Fourier’s participation in industry-related events including industry associations, trade-shows, and conferences.</li><li>Drive and build upon our strong commercial culture that focuses on agency, accountability, and velocity.</li><li>Engage in continuous performance management to coach, recognize, celebrate, and inspire excellence while clearly communicating expectations and accountability.</li><li>Develop Fourier’s collaborative and people-driven culture to enable individual growth and make Fourier one of the best places to work</li></ul><h2>Qualifications</h2><ul style="min-height:1.5em"><li>Bachelor's or advanced degree in a relevant field such as economics, business, or marketing; MBA or advanced degree preferred.</li><li>10+ years of experience in commercial leadership roles.</li><li>Demonstrated experience building a lean, high-performing commercial team from the ground up, with a track record of hiring and growing customer-facing teams. Experience doing it at early stage start ups is a plus.</li><li>Track record of acting as a hands-on individual contributor to secure early revenue and ability to meet and exceed assigned commercial targets.</li><li>Experience in selling and deploying industrial-grade services and products.</li><li>Experience drafting, reviewing, and negotiating commercial contracts.</li><li>Deep organization capabilities, especially in regards to influence, collaboration, and communication.</li><li>Experience with renewable energy production and backup power systems a plus in heavy industries, data centers, and other energy-intensive environments.</li><li>Prior experience selling or working with industrial gases is a plus.</li><li>Experience setting and implementing a performance-based compensation plan.</li><li>50%+ Travel required to visit customer locations and attend industry events</li></ul><h2>What we offer</h2><ul style="min-height:1.5em"><li>Fully paid Medical, Dental, and Vision coverage</li><li>Competitive salary and equity compensation commensurate with experience</li><li>401k</li><li>Diverse and inclusive work environment</li><li>Paid sick days and vacation</li></ul>

VP of Business Development

Fourier is working on making on-site Hydrogen universally accessible. Our breakthrough architecture enables highly modular and fully automated electrolyzers that scale to any size and optimize efficiency at all loads. We are on a mission to transition the global energy landscape towards a purely sustainable and emission free future.About the RoleWe are looking for a full time Sr. Electrical Engineer to work on the design and development of high power electrical systems, from early ideation through architectural decisions, circuit implementation, and lab validation. You will own the design of power converters and their integration into our electrolyzer system, and play a hands-on role in bench-top bring-up, testing, and verification of your designs. You will also be responsible for setting up a lab for power electronics development and prototyping. The ideal candidate takes pride in delivering rigorous, well-documented designs and understands that clear electrical documentation and uncompromising safety practices are as critical as the designs themselves.Roles and Responsibilities<ul style="min-height:1.5em"><li>Explore and develop novel ideas and architectural concepts for high power electrical systems (&gt;100 kW, AC-DC), translating early ideation into concrete design decisions that guide system architecture and modularity.</li><li>Drive the selection and validation of converter topologies against system-level design requirements — including input power quality, output current ripple, and efficiency — and own the bench-top testing and experimental validation that confirms or informs those architectural choices.</li><li>Design of power electronic converters, both AC-DC and DC-DC up to 50kW for integration into larger power systems.</li><li>Develop and maintain high quality Single Line Diagrams (SLDs) as a core design deliverable at each stage of the design process, from initial architecture through final system integration. SLDs must clearly communicate system topology, protection schemes, switching devices, and power flow to cross-functional stakeholders.</li><li>Protection circuit design for current, voltage, and temperature.</li><li>Low voltage design for current, temperature, voltage measurements, CAN/RS-485 communication interface</li><li>Development of Isolation and ground schemes</li><li>Development of Low voltage/on board power supply rails</li><li>High power PCB design/layout experience with using Altium</li><li>Modeling and simulation of power circuits.</li><li>Selection of all circuit components like MOSFET/IGBT, controllers, OP-amps &amp; ADCs</li><li>Define converter control concept and complete small signal design and analysis.</li><li>Power loss analysis.</li><li>Thermal design and analysis of the power components.</li><li>Power quality design for 3 phase AC input (Power factor and total harmonic distortion).</li><li>Ensure all designs comply with applicable electrical safety standards (e.g. UL, IEC, NFPA 70/NEC, IEEE) and actively participate in design reviews with a safety-first mindset.</li><li>Identify and document electrical hazards, develop mitigation strategies, and maintain design documentation sufficient to support third-party safety audits and certification processes.</li><li>Oversee procurement and assembly of hardware.</li><li>Lab bring-up and verification of initial design and revisions.</li><li>Support of the system integration and testing.</li><li>Work independently and exercise judgment in making design changes.</li></ul>Qualifications and SkillsQualified candidates for this role will possess a Bachelor's Degree in Electrical Engineering with extensive industry experience bringing power circuit designs/products from concept to field deployment. A Masters degree in Electrical Engineering is a plus.Other Requirements<ul style="min-height:1.5em"><li>Knowledge of power conversion circuits and topologies<ul style="min-height:1.5em"><li>AC-DC: Totem pole PFC and 3 phase PFC, LLC</li><li>DC-DC: Buck, Full bridge, PSFB, DAB, and LLC</li></ul></li><li>Demonstrated ability to produce clear, accurate, and complete Single Line Diagrams for high power systems, including proper representation of protective devices, grounding schemes, metering, and disconnects.</li><li>Working knowledge of electrical safety standards and regulatory frameworks relevant to high power industrial equipment, including UL 508A, IEC 62109, NFPA 70E, and/or NEC. Experience supporting UL/CE certification processes is strongly preferred.</li><li>Knowledge and experience with LTspice, PLECS and Matlab Simulink.</li><li>Knowledge and experience with schematic capture tools with preference for Altium.</li><li>Knowledge and experience with printed circuit board design using popular CAD packages with a preference for Altium.</li><li>Knowledge and experience mitigating EMI through circuit design and PCB layout.</li><li>Knowledge of Matlab, Python, MathCAD and/or other common tools for design calculations.</li><li>Hands-on experience using lab equipment including soldering stations, oscilloscopes, power supplies, loads, network analyzers, data acquisition systems, and spectrum analyzers.</li><li>Demonstrated safe laboratory practices and familiarity with arc flash analysis, lockout/tagout (LOTO) procedures, and high voltage safety protocols.</li><li>Strong and effective verbal, written, and interpersonal communication skills.</li><li>Experience designing high frequency magnetics is highly desirable.</li><li>Familiarity with Power Quality/EMI/EMC/Safety Regulatory Compliance is desirable.</li><li>Firmware development for embedded controllers is desirable.</li></ul>What We Offer<ul style="min-height:1.5em"><li>Fully paid Medical, Dental, and Vision coverage</li><li>Competitive salary and equity compensation commensurate with experience</li><li>Diverse and inclusive work environment</li><li>A unique opportunity to influence a product concept at the highest level and then lead the delivery of key components</li><li>Paid sick days and vacation</li></ul>

Senior Electrical Engineer- India

Fourier is working on making on-site Hydrogen universally accessible. Our breakthrough architecture enables highly modular and fully automated electrolyzers that scale to any size and optimize efficiency at all loads. We are on a mission to transition the global energy landscape towards a purely sustainable and emission free future.About the RoleWe are looking for a full time Sr. Electrical Engineer to work on the design and development of high power electrical systems, from early ideation through architectural decisions, circuit implementation, and lab validation. You will own the design of power converters and their integration into our electrolyzer system, and play a hands-on role in bench-top bring-up, testing, and verification of your designs. You will also be responsible for setting up a lab for power electronics development and prototyping. The ideal candidate takes pride in delivering rigorous, well-documented designs and understands that clear electrical documentation and uncompromising safety practices are as critical as the designs themselves.Roles and Responsibilities<ul style="min-height:1.5em"><li>Explore and develop novel ideas and architectural concepts for high power electrical systems (&gt;100 kW, AC-DC), translating early ideation into concrete design decisions that guide system architecture and modularity.</li><li>Drive the selection and validation of converter topologies against system-level design requirements — including input power quality, output current ripple, and efficiency — and own the bench-top testing and experimental validation that confirms or informs those architectural choices.</li><li>Design of power electronic converters, both AC-DC and DC-DC up to 50kW for integration into larger power systems.</li><li>Develop and maintain high quality Single Line Diagrams (SLDs) as a core design deliverable at each stage of the design process, from initial architecture through final system integration. SLDs must clearly communicate system topology, protection schemes, switching devices, and power flow to cross-functional stakeholders.</li><li>Protection circuit design for current, voltage, and temperature.</li><li>Low voltage design for current, temperature, voltage measurements, CAN/RS-485 communication interface</li><li>Development of Isolation and ground schemes</li><li>Development of Low voltage/on board power supply rails</li><li>High power PCB design/layout experience with using Altium</li><li>Modeling and simulation of power circuits.</li><li>Selection of all circuit components like MOSFET/IGBT, controllers, OP-amps &amp; ADCs</li><li>Define converter control concept and complete small signal design and analysis.</li><li>Power loss analysis.</li><li>Thermal design and analysis of the power components.</li><li>Power quality design for 3 phase AC input (Power factor and total harmonic distortion).</li><li>Ensure all designs comply with applicable electrical safety standards (e.g. UL, IEC, NFPA 70/NEC, IEEE) and actively participate in design reviews with a safety-first mindset.</li><li>Identify and document electrical hazards, develop mitigation strategies, and maintain design documentation sufficient to support third-party safety audits and certification processes.</li><li>Oversee procurement and assembly of hardware.</li><li>Lab bring-up and verification of initial design and revisions.</li><li>Support of the system integration and testing.</li><li>Work independently and exercise judgment in making design changes.</li></ul>Qualifications and SkillsQualified candidates for this role will possess a Bachelor's Degree in Electrical Engineering with extensive industry experience bringing power circuit designs/products from concept to field deployment. A Masters degree in Electrical Engineering is a plus.Other Requirements<ul style="min-height:1.5em"><li>Knowledge of power conversion circuits and topologies<ul style="min-height:1.5em"><li>AC-DC: Totem pole PFC and 3 phase PFC, LLC</li><li>DC-DC: Buck, Full bridge, PSFB, DAB, and LLC</li></ul></li><li>Demonstrated ability to produce clear, accurate, and complete Single Line Diagrams for high power systems, including proper representation of protective devices, grounding schemes, metering, and disconnects.</li><li>Working knowledge of electrical safety standards and regulatory frameworks relevant to high power industrial equipment, including UL 508A, IEC 62109, NFPA 70E, and/or NEC. Experience supporting UL/CE certification processes is strongly preferred.</li><li>Knowledge and experience with LTspice, PLECS and Matlab Simulink.</li><li>Knowledge and experience with schematic capture tools with preference for Altium.</li><li>Knowledge and experience with printed circuit board design using popular CAD packages with a preference for Altium.</li><li>Knowledge and experience mitigating EMI through circuit design and PCB layout.</li><li>Knowledge of Matlab, Python, MathCAD and/or other common tools for design calculations.</li><li>Hands-on experience using lab equipment including soldering stations, oscilloscopes, power supplies, loads, network analyzers, data acquisition systems, and spectrum analyzers.</li><li>Demonstrated safe laboratory practices and familiarity with arc flash analysis, lockout/tagout (LOTO) procedures, and high voltage safety protocols.</li><li>Strong and effective verbal, written, and interpersonal communication skills.</li><li>Experience designing high frequency magnetics is highly desirable.</li><li>Familiarity with Power Quality/EMI/EMC/Safety Regulatory Compliance is desirable.</li><li>Firmware development for embedded controllers is desirable.</li></ul>What We Offer<ul style="min-height:1.5em"><li>Fully paid Medical, Dental, and Vision coverage</li><li>Competitive salary and equity compensation commensurate with experience</li><li>401k</li><li>Diverse and inclusive work environment</li><li>A unique opportunity to influence a product concept at the highest level and then lead the delivery of key components</li><li>Paid sick days and vacation</li></ul>

Senior Electrical Engineer

About the roleThis internship will involve supporting the design and validation of our commercial product. The intern will contribute to the design of a regenerative drying and purification system to enable efficient and continuous production of high-purity hydrogen. Working closely with an R&amp;D engineer, the intern will characterize thermal/separation processes, develop control systems, and optimize operating parameters to satisfy key reliability and cost constraints. As the directly responsible individual overseeing an experimental test station, the intern will develop a data analysis framework to provide key insights into long-term physicochemical phenomena. The role may involve working with vendors to design and develop custom components.Requirements<ul style="min-height:1.5em"><li>Currently pursuing or recently completed a B.S. or M.S. in Chemical / Materials / Mechanical / Environmental Engineering, Chemistry, Physics or similar</li><li>Comfortable rolling up their sleeves to work with basic mechanical/electrical components, troubleshoot independently, and motivated to take ownership (agency) of hands-on lab work</li><li>Strong fundamentals and problem-solving intuition in one or more of the following areas: thermodynamics, fluid mechanics, heat and mass transfer, reaction kinetics, phase equilibria</li><li>Thrives in a fast-moving environment and can learn, iterate, and execute with velocity</li><li>Must be available to start in August/September 2026 and work on-site in Mountain View, CA</li><li>Highly organized with strong attention to detail and a commitment to following through (accountability)</li><li>Clear, thoughtful communicator who works well on small, collaborative teams</li></ul>

Fall 2026 R&D Engineering Intern – Hydrogen Systems

Fourier is on a mission to make on-site hydrogen universally accessible. Our breakthrough architecture delivers highly modular, fully automated electrolyzer systems that scale to any capacity and optimize efficiency across all load profiles. We are building the infrastructure necessary for a purely sustainable, emission-free global energy future — and we need exceptional engineers to help us get there.<h2>About the Role</h2>We are seeking a Senior Mechanical Engineer with deep hands-on expertise to lead mechanical design, analysis, integration, and validation of our commercial hydrogen production systems. This is a high-ownership role spanning all subunits and design aspects and the full balance-of-plant envelope that ties them together.This role sits at the intersection of mechanical, electrical, and manufacturing disciplines. You will co-own DFM/DFA strategy with our manufacturing partners and serve as the primary mechanical interface to our electrical and electronics engineering teams — ensuring that both high-voltage (HV) power conversion systems and low-voltage (LV) control and sensing electronics are packaged safely, thermally managed, and fully integrated into production enclosures. <h2>Roles and responsibilities</h2><ul style="min-height:1.5em"><li>Lead concept development, design trades, and down-select decisions for all mechanical subsystems from water purification through post-production H₂ purification</li><li>Own 3D CAD design of complex parts and assemblies using SolidWorks or equivalent — including sheet metal, plastics, insulation systems, sealing methods, connectors, and fasteners</li><li>Review and develop process flow diagrams, P&amp;IDs, and mechanical design documentation</li><li>Perform first-principles hand calculations for sizing and performance of fluid, thermal, and structural systems</li><li>Collaborate closely with the electrical and electronics engineering teams to integrate high-voltage (HV) power electronics and low-voltage (LV) control, sensing, and communications systems into mechanical enclosures</li><li>Design packaging solutions for HV electrical assemblies — including bus bars, power modules, and high-current connectors — ensuring proper insulation, creepage/clearance compliance, and thermal management</li><li>Design and validate cooling technologies (heat exchangers, forced-air systems) for thermal management of electrolyzer stacks, power electronics, and ancillary electrical components</li><li>Ensure enclosure designs meet relevant electrical safety standards (UL, IEC, NFPA) for HV systems handling DC bus voltages typical of PEM electrolysis applications</li><li>Define and manage interface control documents (ICDs) between mechanical and electrical subsystems</li><li>Partner actively with manufacturing engineering to embed Design for Manufacturability (DFM) and Design for Assembly (DFA) principles from the earliest concept phase through production release</li><li>Create and maintain full Balance-of-Plant (BoP) documentation including Bills of Materials, P&amp;IDs, and fluid system specifications</li><li>Hands-on experience or strong familiarity with gas (hydrogen, nitrogen, oxygen) and water piping systems, including pressure ratings, material compatibility, and leak testing protocols</li><li>Develop test plans and lead laboratory test and validation activities to confirm product reliability, safety, and performance</li><li>Create and maintain PLM documentation including Bills of Materials, engineering drawings, design calculations, and FMEAs</li></ul><h2>Qualifications</h2>Required:<ul style="min-height:1.5em"><li>B.S. in Mechanical Engineering or equivalent; 6+ years of relevant experience in commercial product design and development</li><li>First-principles understanding of statics, mechanics, materials science, heat transfer, thermodynamics, and fluid dynamics — with the ability to apply these rapidly in hand calculations</li><li>Extensive experience taking mechanical designs from concept through production, including prototype builds and manufacturing release</li><li>Proven experience in DFM/DFA — working hand-in-hand with manufacturing partners to optimize designs for producibility, assembly, and reliability</li><li>Demonstrated experience packaging and integrating electromechanical systems involving both HV and LV electrical components</li><li>Proficiency in 3D CAD (SolidWorks strongly preferred) and Thermal &amp; Structural FEA tools</li><li>Strong hands-on aptitude — comfortable in the lab, on the shop floor, and at the test rig</li><li>Experience creating GD&amp;T-compliant 2D fabrication drawings (ASME Y14.5)</li></ul>Preferred:<ul style="min-height:1.5em"><li>Advanced degree (M.S. or Ph.D.) in Mechanical Engineering or closely related field</li><li>Experience with PEM electrolysis, fuel cell systems, or related electrochemical systems</li><li>Hands-on experience with hydrogen, oxygen, nitrogen, or other high-purity gas systems — including pressure management, material selection (316L SS, PTFE, PEEK), and leak testing</li><li>Experience with water purification technologies (deionization, ultrafiltration, reverse osmosis) and post-production gas purification</li><li>Multi-physics and CFD simulation experience (ANSYS Fluent, COMSOL, or similar)</li><li>Familiarity with electrical safety standards relevant to HV systems: UL 508A (industrial control panels), IEC 60204, NFPA 70E</li><li>Experience with PLM systems for BOM and drawing management</li></ul><h2>What we offer</h2><ul style="min-height:1.5em"><li>Fully paid Medical, Dental, and Vision coverage</li><li>Competitive salary and equity compensation commensurate with experience</li><li>401k Retirement Plan</li><li>Diverse and inclusive work environment</li><li>Paid sick days and vacation</li><li>In-office lunches</li><li>The opportunity to make a material impact on the global clean energy transition</li></ul>

Sr. Mechanical Engineer

<h2>About Fourier</h2>Fourier is focused on making on-site hydrogen universally accessible. Our breakthrough architecture enables highly modular and fully automated electrolyzers that scale to any size and optimize efficiency at all loads.We are on a mission to transition the global energy landscape toward a purely sustainable and emission-free future by unlocking the full potential of hydrogen as a clean energy carrier.<h1>Role Overview</h1>Fourier Earth Inc. is seeking a Senior Manager of Power Electronics Engineering to lead the development of critical power electronics systems for our next-generation electrolyzer platforms. This role will combine deep technical expertise with strong leadership, guiding architecture decisions, driving hardware development, and building a high-performing engineering team.You will play a key role in developing high-efficiency power conversion systems that enable scalable hydrogen production and ensure our technology performs reliably across a wide range of operating conditions. You will lead the design, integration, and deployment of all electrical systems powering our H2 electrolyzers and all supporting equipment for a fully functional and automated hydrogen production system. The candidate will possess deep technical expertise in power conversion and industrial distribution, but have the broad systems-level vision to seamlessly integrate the hardware with mechanical constraints and software/firmware controls in a hazardous environment.The ideal candidate brings extensive experience in power electronics design, high-power systems, and system-level architecture in accordance with compliance standards, along with a proven ability to mentor engineers and lead complex hardware programs from concept through production.<h1>Responsibilities</h1><ul style="min-height:1.5em"><li>Architectural Leadership: Own the end-to-end electrical architecture from the 480V grid tie-in down to the 12V/24V DC sensor networks, ensuring clean power distribution, signal integrity, and EMI/EMC compliance.</li><li>Power Conversion &amp; Load Management: Oversee the design and specification of AC/DC rectification for the electrolyzer stack, DC/DC converters, and the integration of VFDs and SCR controllers for heavy industrial loads.</li><li>Systems Integration: Act as the technical bridge between Hardware, Controls, and Software teams. Define firmware requirements, state-machine logic, and communication protocols (Modbus, CAN, Profinet, etc.) to ensure seamless system operation.</li><li>Safety &amp; Compliance: Lead the design of electrical systems for hazardous environments (Class I, Div 1/2 or ATEX). Ensure all designs strictly adhere to NEC, UL, and relevant functional safety standards (IEC 61508/ISO 13849).</li><li>Team Management: Recruit, mentor, and manage a high-performing team of power electronics, electrical, and controls engineers.</li><li>Vendor &amp; Supply Chain Collaboration: Identify, evaluate, and manage external suppliers, component vendors, and contract manufacturers for critical power components (transformers, rectifiers, control panels).</li><li>Project Execution: Manage complex development schedules, budgets, and hardware development lifecycles from initial prototyping through to commercial-scale deployment. This includes best practices for schematic design, PCB layout, simulation and hardware validation to be presented and approved through design reviews.</li></ul><h2>Basic Qualifications</h2><ul style="min-height:1.5em"><li>Education: B.S. in Electrical Engineering or related field.</li><li>Experience: 12+ years of progressive engineering experience in power electronics, industrial automation, or renewable energy systems.</li><li>Leadership: 5+ years of direct engineering management experience leading cross-functional hardware/systems teams.</li><li>Technical Mastery: Proven expertise in 480V (3-phase) AC power distribution, AC/DC rectification, and isolating low-voltage instrumentation networks from high-voltage noise. Strong demonstration of root cause analysis and system optimization for high velocity design and implementation.</li><li>Controls &amp; Comms: Strong familiarity with PLC/PAC architectures and industrial fieldbus networks.</li><li>Safety Standards: Deep working knowledge of NEC (NFPA 70), UL 508A, and high-voltage safety protocols (LOTO, grounding/bonding).</li></ul><h2>Preferred Qualifications</h2><ul style="min-height:1.5em"><li>M.S. or Ph.D. with a focus on Power Electronics, Power Systems, or Control Systems.</li><li>Direct industry experience in hydrogen infrastructure, electrochemistry, oil &amp; gas, or large-scale energy storage.</li><li>Experience designing systems specifically for hazardous locations (hydrogen gas environments).</li><li>Strong background in thermal management of high-power electronics (liquid/air cooling strategies).</li></ul><ul style="min-height:1.5em"><li>Experience supporting manufacturing scale-up and production environments. This may include startup or high-growth technology company experience.</li></ul><h1>Why Join Fourier</h1><ul style="min-height:1.5em"><li>Help build technology that directly accelerates the clean energy transition.</li><li>Work on cutting-edge hydrogen production systems.</li><li>Join a mission-driven team solving one of the most important challenges in global energy.</li></ul>

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