---
title: 'Lead Materials Engineer (Miami, FL) at Exowatt'
canonical: 'https://feeny.ai/job/lead-materials-engineer-miami-fl-exowatt-miami-bj13wyfcqph1'
type: 'job'
last_seen: '2026-10-19'
---

# Lead Materials Engineer (Miami, FL) at Exowatt

- **Company:** Exowatt
- **Location:** Miami, FL
- **Compensation:** $170k–$215k
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-09-28
- **Last confirmed live:** 2026-10-19
- **Apply:** https://jobs.lever.co/exowatt/0fa969a7-2322-4451-bdbd-c6ee72ab1a09

## Job description

Exowatt is revolutionizing the energy landscape for the AI era with our groundbreaking P3 system that captures solar energy, stores it as heat, and generates electricity on demand. Founded in 2023 and backed by leading investors including Andreessen Horowitz, Sam Altman, and Felicis, we're committed to providing clean, modular, and scalable power that meets the rapidly growing demands of AI infrastructure. Our mission is to make sustainable renewable energy always available and almost free, enabling technological advancement while protecting our planet.

We are seeking an exceptional Lead Materials Engineer with deep research expertise to spearhead materials innovation for our revolutionary thermal energy storage technology. This role demands a PhD-level researcher who thrives on solving complex, multi-physics materials challenges that push the boundaries of what's possible in renewable energy.

This position is based in Miami, FL. If selected, relocation to Miami, FL is required. Exowatt provides relocation assistance.

What You'll Do:

- Advanced Materials Research & Development:
- Lead cutting-edge research into high-temperature thermal storage materials, optical concentrators, and heat engine components operating in extreme thermal cycling conditions
- Develop novel material compositions and processing techniques for our proprietary sensible heat battery technology that must withstand temperatures exceeding 1000°C
- Conduct fundamental research into thermal conductivity, heat capacity, thermal expansion, and long-term stability of advanced ceramics, refractory metals, and composite materials
- Cross-Disciplinary Innovation:
- Collaborate with our world-class team of mechanical, thermal, and optical engineers to solve complex multi-physics problems at the intersection of materials science, thermodynamics, and optics
- Lead materials selection and optimization for our Fresnel lens systems, requiring expertise in optical materials, coatings, and durability under concentrated solar radiation
- Drive materials innovation for heat engine components (Stirling engines) requiring expertise in high-temperature alloys, tribology, and fatigue resistance
- Advanced Characterization & Analysis:
- Design and execute sophisticated materials testing protocols using advanced characterization techniques (XRD, SEM/TEM, DSC/TGA, mechanical testing, thermal cycling)
- Perform failure analysis and root cause investigations to continuously improve material performance and system reliability
- Develop predictive models for material behavior under extreme thermal and mechanical loading conditions
- Strategic Materials Engineering:
- Lead materials cost optimization initiatives while maintaining performance requirements—balancing advanced material properties with manufacturability and scalability
- Establish strategic partnerships with materials suppliers and research institutions to advance next-generation thermal storage materials
- Drive intellectual property development through patents and publications in high-impact journals
- Technical Leadership:
- Mentor junior engineers and technicians in advanced materials characterization and testing methodologies
- Create comprehensive technical documentation including research reports, material specifications, testing protocols, and manufacturing guidelines
- Present research findings to executive leadership, investors, and at prestigious industry conferences

Required Experience

- Research Excellence:
- PhD in Materials Science, Chemical Engineering, Mechanical Engineering, or related field with demonstrated expertise in high-temperature materials, thermal energy storage, or related advanced materials systems
- Minimum 5 years of deep research experience in materials engineering, with preference for renewable energy, aerospace, concentrated solar power, or advanced energy storage industries
- Proven track record of breakthrough research evidenced by high-impact publications, patents, and successful technology transitions from lab to commercial applications
- Technical Expertise:
- Extensive hands-on experience with advanced materials including high-temperature ceramics, refractory alloys, optical materials, thermal barrier coatings, and phase change materials
- Deep understanding of materials thermodynamics, kinetics, and processing methods (powder metallurgy, additive manufacturing, thin film deposition, crystal growth)
- Expertise in advanced characterization techniques and statistical analysis of materials data
- Experience with computational materials science tools (DFT, molecular dynamics, finite element modeling)
- Industry Impact:
- Demonstrated success in translating research into commercially viable materials solutions
- Experience working in fast-paced, high-growth technology companies or leading research institutions
- Track record of cross-functional collaboration in complex engineering systems

What We Offer: Competitive salary and equity options. Comprehensive benefits package, including health, dental, and retirement plans. A dynamic and inclusive work environment that fosters creativity and innovation. Opportunities for professional growth and development in a rapidly evolving industry. Relocation assistance.

## About Exowatt

## Company Overview
- **One-liner**: Exowatt designs and manufactures modular, full-stack solar energy systems that capture solar energy, store it as heat, and dispatch electricity on demand to power energy-intensive infrastructure like AI data centers.
- **Entity Type**: Private (Series A)
- **Headquarters**: Miami, FL, USA
- **Founded**: 2023 (implied by company narrative)
- **Founders**: Not publicly disclosed on the website or job postings

## Core Business
- **Primary industry/industries**: Renewable Energy, Clean Technology, Energy Storage, AI Infrastructure.
- **Target customers**: B2B — specifically AI data centers, high-performance computing (HPC) data centers, and utility-scale energy projects. They also target utility companies and industrial sites with high energy demands.
- **Mission or purpose statement**: "Our mission is to deliver ultra-low-cost, reliable power that fuels global AI infrastructure while protecting our planet" — as stated by the founders on their vision page.

## Products & Services
- **Exowatt P3**: The flagship product, a "dispatchable solar" system. It is a modular, full-stack energy system that captures solar energy using custom optical lenses (Fresnel lenses), stores it as heat in a proprietary high-temperature sensible heat battery (long-duration energy storage), and converts it into electricity on demand via a proprietary heat engine. It is designed to provide up to 24 hours of dispatchable energy, essentially serving as a baseload power source. The system can be deployed behind the meter (BTM) to reduce interconnection wait times, and is built in the USA without rare earth minerals.
- **Energy Optimization Software**: Integrated software platform for real-time monitoring, control, and automation of Exowatt P3 systems. Enables intelligent dispatch, integration with other energy assets (solar PV, wind, natural gas, grid), and participation in arbitrage and virtual power plants (VPPs).

## Market Standing
- **Valuation**: Not publicly disclosed.
- **Key Metric**: Total Funding — $70 million Series A round announced on April 22, 2025 [exowatt.com](https://www.exowatt.com/faq).
- **Notable Investors/Partners**: Not named on the website (the funding announcement and Crunchbase profile are referenced but not detailed on the main site). The company claims a "Made in the USA" supply chain and mentions partnerships with utility companies and data center operators.
- **Growth Signals**: 
    - Raised a significant $70M Series A in early 2025, signaling strong investor confidence.
    - Actively hiring across multiple key engineering and leadership roles (Electrical, Mechanical, Controls, Power Electronics) in two locations (Miami, FL and Austin, TX).
    - Targeting the rapidly expanding AI and HPC data center market, which has an enormous and growing demand for clean, dispatchable power.
    - Their product’s "Bring Your Own Power" (BYOP) capability directly addresses the critical bottleneck of long interconnection queues for new data centers, a major market pain point.

## Competitive Advantages
- **Dispatchable Solar + Storage**: Unlike standard solar PV, Exowatt's system can provide 24/7 baseload power by storing solar energy as heat and generating electricity on demand, solving the intermittency problem of renewables.
- **Expedited Time-to-Power**: The ability to deploy fully behind the meter allows customers to bypass lengthy utility interconnection queues, accelerating project timelines for energy-intensive facilities like data centers.
- **No Rare Earth Minerals**: The system is built with abundant, domestically sourced materials, avoiding supply chain vulnerabilities and environmental concerns associated with rare earth mining.
- **Modular & Scalable**: Factory-built modules allow for linear scaling, enabling customers to start small and expand capacity as their energy needs grow.
- **30-Year Lifespan**: Designed for low maintenance and a 30-year operational life, providing long-term reliability.

## Strategic Focus
- **Targeting the AI Energy Boom**: Exowatt is squarely focused on providing clean, reliable, and rapidly deployable power to solve the massive energy demands of AI and HPC data centers.
- **U.S. Manufacturing & Energy Independence**: The company is prioritizing domestic manufacturing to ensure quality, supply chain security, and alignment with national energy independence goals.
- **Scaling Rapidly to Meet Demand**: With a $70M Series A, the focus is likely on scaling manufacturing, building out their deployment pipeline with initial customers, and expanding the engineering team to accelerate product development and deployment.

## Why Work Here
- **High-Impact Mission**: The opportunity to work on a critical technology that directly enables the AI revolution by solving its most fundamental constraint: sustainable, scalable power.
- **High-Performance Team**: The company describes itself as a "high-performance team of engineers, scientists, and builders pushing the boundaries of what’s possible," indicating a fast-paced, ambitious environment.
- **On-Site Engineering Roles**: The posted positions (Electrical Engineer, Lead Mechanical Engineer, Lead Controls & Firmware Engineer) are full-time and on-site in either **Miami, FL** or **Austin, TX**. No remote or hybrid options are visible in current job listings.
- **Competitive Benefits**: Benefits include comprehensive healthcare, flexible PTO, and team-wide equity [exowatt.com/careers](https://www.exowatt.com/careers).
- **Small, Fast-Moving Company**: With a Series A funding, this is an early-stage company, offering roles with high ownership, influence, and the chance to build foundational systems.

## Sources
1. [exowatt.com](https://www.exowatt.com/?gad_campaignid=21982037242)
2. [exowatt.com](https://www.exowatt.com/faq)
3. [exowatt.com](https://www.exowatt.com/vision)
4. [exowatt.com](https://www.exowatt.com/careers)
5. [jobs.lever.co](https://jobs.lever.co/exowatt)

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