Structural Design Engineer
Rondo Energy
Company Overview
Rondo Energy
Alameda, California, United States
2020
Employee count is not publicly specified, and as a private company, no revenue figures are disclosed; total funding raised is $82 million (source: cbinsights.com).
What They Do
Rondo Energy focuses on electrified thermal energy storage, specifically through its innovative Rondo Heat Battery (RHB) technology. This technology converts intermittent renewable electricity from sources such as wind and solar into high-temperature heat, which is stored in refractory bricks heated to temperatures between 1100-1500°C. The stored energy can then be dispatched as superheated air, process heat, steam, or power with an impressive efficiency of over 98% for extended periods, making it a viable solution for industries that require continuous high-temperature heat (source: rondo.com). Rondo's products are particularly targeted at sectors like steel, cement, chemicals, food processing, biofuels, textiles, and mining, where high-temperature heat is essential for operations. The company offers scalable systems ranging from pilot-scale deployments to larger commercial applications, catering to a diverse range of industrial needs (source: cbinsights.com). By providing a cost-effective alternative to lithium-ion batteries, Rondo differentiates itself in the market, focusing on thermal storage solutions that do not rely on rare materials, thus enhancing sustainability and accessibility for heavy industries globally (source: weforum.org).
Projects & Track Record
Rondo Energy has made significant strides in the deployment of its Heat Battery technology, with its first pilot-scale 2 MWh Heat Battery operational since 2023 at a California ethanol production facility. This deployment marks a pivotal moment for the company as it represents its initial major project in the field (source: canarymedia.com). The company has announced a total of 11 commercial developments, including 8 RHB deployments that collectively exceed 200 MWh. Notably, Rondo is working on a Heat-as-a-Service solution for HEINEKEN, which is powered by on-site solar and grid renewables, with support from major partners like EDP and the European Investment Bank (source: rondo.com). Rondo's partnerships span various industries, including food and beverage, cement production, mining, and textiles, with a total of 3 GWh in committed capacity across four major partnerships (source: rondo.com). The company's geographic presence is primarily in the United States, with its headquarters in Alameda and ongoing projects in California, while also expanding into Europe through its collaboration with HEINEKEN (source: cbinsights.com).
Recent Developments
In the past two years, Rondo Energy has successfully secured a Series B - II funding round, building on a previous $22 million Series A funding closed in February 2022. This funding was led by Breakthrough Energy Ventures and Energy Impact Partners, aimed at enhancing manufacturing capabilities and facilitating customer deliveries (source: rondo.com). The company has made headlines with its HEINEKEN Heat-as-a-Service contract, which was announced as a significant milestone in 2025, alongside the deployment of over 200 MWh across 11 commercial projects (source: rondo.com). Additionally, Rondo was granted a U.S. patent on February 25, 2025, for a thermal energy storage system that integrates with steam cracking systems, showcasing its commitment to innovation in energy storage and conversion technologies (source: cbinsights.com). While no acquisitions or mergers have been reported, Rondo continues to achieve operational milestones and gain recognition from investors for its efforts in addressing industrial heat challenges (source: canarymedia.com).
Working There
Rondo Energy's LinkedIn page indicates that the company is actively hiring for various roles primarily in engineering, manufacturing, project development, and operations. The departments include research and development focused on Heat Battery technology, sales teams targeting industrial clients, deployment teams for project execution, and support functions such as finance, reflecting the company's growth phase (source: linkedin.com). Most hiring efforts are concentrated at the Alameda headquarters, although there may be remote or project-based opportunities associated with U.S. pilots and European expansions like the HEINEKEN project (source: cbinsights.com). The company culture is characterized by a mission-driven approach to decarbonization, emphasizing collaboration with top investors and a commitment to scaling operations for profitability, as highlighted by CEO John O’Donnell in recent funding announcements (source: rondo.com). While specific employee benefits are not detailed in public sources, the venture-backed nature of Rondo suggests competitive compensation packages typical for Series B clean-tech firms in California, including potential equity options (source: linkedin.com).
Last updated on Feb 23, 2026 | Report an issue
Job Description
We are seeking an experienced and innovative Structural Design Engineer to join our growing team and help transform industrial heat at scale. This role offers the opportunity to work on a first-of-its-kind energy technology with tangible, real-world climate impact, supporting the development and deployment of large-scale hardware systems.
As part of the Structural Engineering team within the Product Engineering organization, you will own the structural design of critical subsystems within Rondo's Heat Batteries. Working closely with cross-functional partners, you will ensure designs meet performance requirements while remaining manufacturable, constructible, and cost-effective. Your work will directly influence product reliability, scalability, and speed to deployment, and will play a key role in advancing Rondo's mission to decarbonize industrial energy.
Join us in reducing global CO₂ emissions by 1% in 10 years-and 15% in 15 years.
What You Will Do
Key responsibilities include, but are not limited to:
- Design and develop structural assemblies for Rondo Heat Batteries, including metal insulated enclosures, and air management components such as louvers, ducts, and plenums, all subjected to various load cases and scenarios including thermo-mechanical loads, wind and seismic forces.
- Perform structural analysis and design of various components and systems according to applicable national and international codes and standards. Where prescriptive codes are insufficient or inapplicable, develop rigorous, well-documented design methodologies and validation plans to ensure performance, safety and reliability.
- Perform finite element analysis (FEA) and apply other analytical methods to verify structural performance and optimize design parameters.
- Develop detailed design documentation, including drawings, sketches, calculation packages, and fabrication-ready CAD models.
- Support the development of design requirements and technical specifications.
- Coordinate design and construction efforts with internal teams and external partners, including fabricators, EPCs, contractors, and design-assist partners.
- Serve as point of contact for structural engineering RFI's.
- Support prototyping and testing efforts to achieve robust, cost-effective solutions for core technology, manufacturing tooling, and related equipment.
- Contribute to an inclusive, collaborative, and iterative engineering environment that fosters open communication and continuous improvement.
What You Will Bring
- Bachelor's degree in Civil Engineering, with a specialization in structures.
- 5+ years of experience designing metal structures and systems (including connection design), particularly cold-formed steel structures in industrial applications (e.g., enclosures, ductwork, louvers, and support structures).
- Strong working knowledge of applicable structural codes and standards, especially AISI and AISC specifications, and ASCE 7.
- In-depth knowledge of seismic analysis and design of steel structures, non-structural components, and specific anchorage considerations in seismic regions.
- Experience designing cast-in-place and post-installed anchorage systems in concrete.
- Excellent communication skills, with the ability to gather, synthesize, communicate and present information across technical and non-technical stakeholders.
- Flexibility, creativity, and a problem-solving mindset.
- Ability to thrive in fast-paced, dynamic environments and work effectively in a cross-functional organization with mechanical, electrical, process engineering and supply chain teams.
- Experience using CAD modeling / BIM tools such as Revit, Navisworks, and SolidWorks.
- Experience in FEA and structural engineering tools such as SAP2000, IdeaStatica, Ansys, etc.
Bonus Points
- An advanced degree in Structural Engineering or Structural Mechanics.
- Experience with process/industrial infrastructure projects.
- Experience with performance-based design of non-building structures.
- Familiarity with international structural codes and standards (European, Australian).
- Familiarity with design of steel/alloy structures exposed to high temperatures and applicable ASME codes.
- Experience with modular, high-precision, high-volume steel framing and manufacturing processes, such as roll forming or pressed sheet metal.
- Experience designing purpose-built, outdoor-rated metal enclosures.
- Experience with interface design between metal structures and concrete or refractory systems.
- Experience with GD&T and tolerance analysis.
- Prior experience working in a startup environment.
- Professional Engineer (PE) license or ability to obtain PE license within 1-2 years from the start date.
What We Offer
- Comprehensive Medical Benefits
- Dental & Vision Benefits
- Life Insurance and ADD
- Up to 13 paid holidays per year, in addition to a company week-long holiday in December
- Flexible time off policy
- Catered lunches on-site
- 401(k) plan with company match
- Rondo HQ is close to Oakland airport - one block from the Bay - and has stunning Bay views!
This role necessitates being on-site at our Alameda HQ several times per week. The estimated annual salary range for this role is $130,000 to $150,000 and it would be eligible for Rondo's excellent benefits listed above plus additional compensation in the form of equity. Please note that some pay bands may have wide ranges of compensation to accommodate candidates' diverse sets of skill levels and experience.
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Job expired?Please let Rondo Energy know you found this job on Rejobs. It helps us grow and get more people working in renewable energy.
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About the role
July 8, 2026
July 8, 2026
Full time
Hybrid
Company
USD 130k–150k yearly
- Alameda, California, United States
5+ years
UTC-07:00