Ingénieur terrain Senior / Staff (H/F)

Antora builds and deploys thermal energy storage to power always-on industrial operations and data centers with low-cost energy. Factory-built in California, Antora's thermal batteries deliver reliable and cost-effective heat and power for industrial loads of any size. Antora is electrifying global industry while supporting U.S. manufacturing jobs, lowering costs for energy consumers, and enhancing the competitiveness of American industry.

We are growing our company with people who put team and mission first, value connection through laughter and joy, and build with humility and openness. We are committed to continue building a diverse, passionate, and creative team dedicated to a future where every industrial facility, everywhere on earth, is powered by abundant, clean, low-cost energy.

About The Role

Antora Energy is seeking a Senior Field Engineer to join our Operations & Maintenance team at the POET Big Stone thermal energy storage (TES) facility in Big Stone City, SD. This role is central to improving and maintaining the performance of our deployed HeatCore thermal battery modules and balance-of-plant systems, with the majority of working time spent on-site developing first-hand insight into how our technology performs in the field. The Field Engineer will identify major and recurring issues across the plant, lead the design, procurement, and implementation of engineered solutions, and facilitate root cause analysis for field incidents and systemic issues failures. Reporting to the POET Site Manager, this person will also serve as the primary link between ground-level observations and the broader engineering organizations responsible for reliability, product development, and commissioning-converting field learning into durable product improvements that keep the Big Stone plant meeting its operational metrics and informing future plant and module designs.

What You'll Do

• Maintain sustained on-site presence at the POET Big Stone facility to develop comprehensive, ground-truth knowledge of plant performance, equipment behavior, and failure modes across HeatCore modules and BOP systems.
• Identify, document, and prioritize major and recurring field issues/priorities - including module efficiency, gas consumption, equipment failures, environmental impacts on instrumentation, and power delivery performance -and own those issues through to verified resolution.
• Lead end-to-end resolution of identified issues: scope the problem, develop or coordinate engineering solutions, drive procurement of required parts and materials, and manage field implementation through to closure.
• Conduct and facilitate formal root cause analysis (RCA) for field incidents and systemic issues, leveraging structured methodologies (e.g., 8D, 5-Why) and coordinating cross-functional input from controls, mechanical, EHS, and product development.
• Partner closely with the O&M TPM, Product Development Reliability Engineer, and Responsible Engineers to ensure field learnings are systematically captured, prioritized, and fed back into the broader engineering roadmap.
• Serve as a technical resource and escalation point for on-site maintenance and operations staff; support the maintenance team in executing complex corrective and preventive work orders.
• Contribute to continuous improvement of commissioning, maintenance, and operating procedures based on direct field experience; support knowledge transfer for new O&M personnel.

What We're Looking For

• B.S. in Mechanical, or Chemical engineering, Electrical, or related engineering discipline.
• 7+ years of field engineering, commissioning, or plant operations experience in an energy, industrial, or process environment.
• Demonstrated ability to independently lead technical troubleshooting and issue resolution from identification through implementation.
• Familiarity with SCADA/controls systems and the ability to interpret process data and alarm logs.
• Hands-on experience with formal RCA methodologies (e.g., 8D, 5-Why, fault tree analysis).
• Ability and willingness to work predominantly on-site in a construction or operating plant environment, including outdoor and confined-space settings. Occasional travel to Antora HQ in San Jose, CA.
• Strong written and verbal communication skills; able to translate field observations into clear engineering documentation and stakeholder updates.
• Proficiency with engineering work management systems (e.g., CMMS, PLM, issue tracking platforms).

Bonus Qualifications

• Experience with thermal energy storage, heat transfer fluids, or high-temperature industrial systems.
• Familiarity with SCADA/controls systems and the ability to interpret process data and alarm logs.
• Experience with SPCC, EHS compliance, or environmental incident response in an industrial plant setting.
• Prior experience with first-of-kind or early-stage technology deployment where standard procedures are still being developed.
• Experience working cross-functionally with product development or R&D teams in a field engineering capacity.

Work Location: Onsite in Big Stone City, South Dakota

Salary Range: $123-150k USD

Salary Basis:

Please note that the salary range listed above reflects Antora Energy's estimated pay for this position. The actual salary offered will be within the posted range and determined based on several factors including but not limited to a candidate's experiences, credentials and expertise, as they pertain to the position's requirements.

In addition to a competitive base salary, Antora Energy's Total Rewards program includes equity compensation in the form of stock options, a premium health benefits package with life and disability insurance, a 401K plan with employer contributions, flexible spending accounts, and an industry leading paid-time-off policy that features flexible and inclusive holiday observance, as well as paid volunteer time off.

Benefits

Compensation & Paid Time Off

• Competitive salary
• Stock options
• 401k plan with company match
• Clean commute stipend
• 15 paid vacation days per year, increasing with tenure
• 12 paid holidays (10 fixed, 2 of your choosing)
• 16 hours of volunteer time off
• 16 weeks of paid parental leave
• 24 hours of wellbeing time off

Health & Wellness

• Comprehensive medical coverage for employees & dependents
• Health savings account option with employer contribution
• Vision, dental, and life coverage
• Flexible spending account & dependent care account options
• Subsidized backup childcare, senior care, and petcare
• 80 hours of sick leave
• Personalized access to mental health support

Facilities & Community

• Kitchen with a variety of healthy snacks & drinks
• On-site gym with fitness equipment
• On-site showers and bike parking
• Dedicated mothers' room
• Team volunteer events
• Monthly social gatherings
• Foosball table and lawn games for breaks and friendly competition