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Sr. Principal Electrical Engineer

Full-time On-site work

Publication date: 30/08/2026

Twelve is pioneering a new industrial era with carbon transformation. We use electrochemistry to turn CO2 into critical products—fuels, chemicals, and materials—that today rely on fossil fuels. We are seeking a Sr. Principal Electrical Design Engineer to join our Plant Design team. The Plant Design team supports greenfield capital project execution in a technical capacity.

Responsibilities

Develop electrical engineering FEL 1-2-3 deliverables and represent Twelve as an owner’s engineer throughout a project lifecycle.; Work with other electrical engineers on balance of plant electrical designs for process plant and electrolyzer systems.; Interface with adjacent internal disciplines and project functions such as process, controls, instrumentation, mechanical, procurement, and project management.; Interface with external EPCs, suppliers and manufacturers, construction contractors, OEMs, distributors, consultants, and other subject matter experts.; Ensure plants are designed and built to appropriate standards, with appropriate consideration given to reliability, maintainability, constructability, operability, and safety.; Collaborate with business development to continually integrate improvements to Twelve’s core technology.; Review and approve electrical drawings, equipment data sheets and requisition packages, Engineering and Construction Work Packages, Material Take-Offs/ Estimates, FAT/ SAT plans, commissioning plans, and startup activities, etc.; Manage or guide 3rd party electrical engineering interfaces.; Execute or guide electrical studies.; Provide technical support to on-site construction teams and assist with plant commissioning and start-up activities.; Support operational issues as needed.

Requirements

Willing to temporarily relocate to Moses Lake, WA until co-location with the EPC contractor- Location TBD and the eventual deployment to where the commercial Plant is going to be built. This position requires a high level of mobility and flexibility.; Bachelor’s degree or higher in Electrical Engineering.; 20+ years of experience, preferably in continuous process plants or similar mission-critical environments.; Expert in electrical infrastructure design principles for electrical substations and industrial plant power distribution.; Experienced in designing, specifying, procuring, installing, and/or supporting operations and maintenance of power distribution electrical equipment, such as: Substations, power converters and rectifiers, distribution/substation transformers, HV/ MV/ LV switchgear, MCCs, motors, protective relaying & metering, UPS’s, EHT, Passive Fire Protection, Arc Flash, generators, VFDs, e-Houses, HV/ MV substations, and modular E-Houses, etc.; Expertise with area classification including equipment specification and wiring methods.; Senior expertise with electrical studies such as load flow, short circuit, motor starting, protective device settings and coordination, arc flash, and harmonic analysis.; Extremely knowledgeable in IEEE, API, and other industry specific electrical engineering technical codes and standards.; Previous experience working with or for EPCs and Owner’s Organizations on industrial-scale engineering, construction projects and operating Plants.; Hands on experience in vendor packages, medium to large modules including formation of price books, and Suppliers’ Quality Surveillance.; Strong design, analytical and financial acumen with experience in driving cost optimization during the preparation of estimates.; Strong familiarity in global sourcing strategies related to electrical equipment, and bulk materials, contract structures, cost controls, and commercial risk management.; Expertise in Front End Loading, Detailed Engineering and project execution processes and project lifecycles.; Expert in petrochemical plant operating philosophies and business drivers.; Ability and enthusiasm to work as part of a highly collaborative, dynamic, and diverse team.

Benefits

Medical, dental, and vision coverage; Paid sick days and vacation; Competitive salary and equity compensation commensurate with experience; Diverse and inclusive work environment
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