Perform engineering analysis, prototyping and/or testing required to deliver robust and cost-effective solutions on the core technology as well as tooling and other equipment to support manufacturing, testing and other efforts
Support procurement by defining technical specifications and qualifying vendors
Prepare specifications, working drawings, instructions and other related documents
Lead technical discussions and design review meetings
Collaborate cross-functionally with engineering, product, and operations teams to drive real-time product development
Lead multiple projects concurrently, managing timelines and budgets
Convert product requirements into technical specifications, develop conceptual and detailed designs along with necessary risk assessments
Develop scalable manufacturing processes and procedures; establish training and quality standards
Design for high volume manufacturability and lower cost
Select equipment with a focus on functionality, scalability, and cost-effectiveness
Propose and execute product cost models and cost reduction initiatives
Requirements
mechanical degree
solidworks
3d analysis
5+ years
product design
team player
A BS degree in Mechanical Engineering or related areas
Fluency in Solidworks
Ability to perform engineering analyses in 1D or 3D
5+ years of engineering experience from multiple industries and technologies (energy industry experience is a plus).
Ability to solve mechanical engineering problems and develop conceptual designs across various mechanical engineering disciplines, particularly heat transfer, mass flow, and mechanics
Hands-on experience with successful product designs, cost optimization, and design-for-manufacturability
A strong preference for working in highly collaborative teams; you are communicative, inclusive, and a good teammate.
Demonstrated creativity and a proven track record of innovation
Benefits
401(k) plan with company match
Dental & Vision Benefits
Catered lunches on-site
Up to 13 paid holidays per year, in addition to a company week-long holiday in December
Comprehensive Medical Benefits
Rondo HQ is close to Oakland airport - one block from the Bay - and has stunning Bay views!
Flexible time off policy
Life Insurance and ADD
Training + Development
Information not given or found
Interview process
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Visa Sponsorship
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Security clearance
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Company
Overview
90% Efficiency
Electric Thermal Energy Storage System
Delivers high efficiency at a biofuels plant in Pixley, CA.
$22M Series A
Funding Raise
Secure significant investment from Microsoft Climate Innovation, Breakthrough Energy, and others.
100–300 MWh
Modular Heat Batteries
Deployed across various industrial sectors to store renewable electricity as industrial heat.
2.4 GWh/year
Brick Manufacturing Facility
Largest facility built with Siam Cement Group, scaling to 90 GWh/year.
Reimagined century-old brick storage to store renewable electricity as 1,100–1,500 °C industrial heat.
First commercial electric thermal energy storage system in 2023.
Deploys modular heat batteries across sectors: food & beverage, cement, chemicals, textiles, mining, fuels, and more.
Typical projects include a cement plant in Southeast Asia, Diageo distilleries in Illinois/Kentucky under DOE support, and a bio-fuels facility in California.
Specializes in zero-combustion drop-in boiler replacements delivering continuous superheated air or steam, with optional combined heat-and-power setups.
Achieved deep decarbonization by replacing fossil-fuel systems with clean, low-cost heat-as-a-service powered by wind and solar.
Culture + Values
Environment + Sustainability
98% Efficiency
Energy Efficiency
Rondo Heat Battery achieves over 98% energy efficiency, enabling continuous 24/7 zero-carbon heat and power from intermittent renewable electricity.
€80M+ Funding
Project Funding
Rondo Heat Battery projects in Europe are supported by over €80 million in funding for decarbonization initiatives.
12 Mt CO₂ Savings
Annual Carbon Savings
SCG's 90 GWh factory, powered by Rondo Heat Batteries, is projected to save 12 million metric tons of CO₂ annually.
2026–2028 Target
Carbon Neutrality
Key customers are targeting carbon neutrality by 2026–2028 using Rondo Heat Batteries to eliminate Scope 1 and Scope 2 emissions.
Eliminates Scope 1 & Scope 2 emissions and produces no NOₓ, SOₓ, or particulate matter.
Supports industrial decarbonization via commercial deployments (e.g., Calgren, Diageo, Covestro, GreenLab) converting fossil‑fuel heat to renewable electric thermal storage.
Rondo joined Renewable Thermal Collaborative to scale renewable heating and cooling globally.