---
title: 'Mechanical Engineer – Optical Systems (Miami, FL) at Exowatt'
canonical: 'https://feeny.ai/job/mechanical-engineer-optical-systems-miami-fl-exowatt-miami-grxhx69chwy1'
type: 'job'
last_seen: '2026-09-07'
---

# Mechanical Engineer – Optical Systems (Miami, FL) at Exowatt

- **Company:** Exowatt
- **Location:** Miami, FL
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-07-21
- **Last confirmed live:** 2026-09-07
- **Apply:** https://jobs.lever.co/exowatt/0cfb9bc6-a953-49e9-b507-535e7de5ff5d

## 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 a Mechanical Engineer to join our optics team. The team owns the full design-to-commissioning lifecycle for our tracker hardware: precision optical elements and the structures that position them, solar tracking architectures, structural analysis under wind and gravity loading, and the instrumentation that turns prototypes into measured systems. The core problem is deceptively hard: hold optical precision on a large structure that moves all day, outdoors, under wind, gravity, and thermal swings, all at a cost that can scale to thousands of units.

At its core, this is a builder's role. Your main focus will be optomechanical assemblies: designing, fabricating, assembling, aligning, and testing the hardware that positions optical elements (lenses and mirrors, for example) on our trackers. The full loop is yours: idea to CAD to built hardware to test data, learning from what breaks and turning the next revision around in days, not months. You will spend most of your time hands-on in the shop, at the assembly bench, and on the test stand. The work spans structures, optics, precision assembly, sensors, and the code and AI agents that read them. This is an AI-native team: agents already drive our simulation campaigns and babysit our long-running tests, and we expect you to work at that level from day one. Everything around your hardware that is code, calculation, or documentation is something an agent should be running for you. Expect real ownership, a steep learning curve, and senior engineers who will review your work closely and push you to grow fast.

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

Key Responsibilities:

- Design, build, and align optomechanical assemblies for the tracker platforms (optic mounts, frames, and alignment and adjustment features), owning them end to end: idea, CAD model, fabricated parts, assembled and working hardware
- Build hardware hands-on: assemble prototypes and test articles, fixture and align optics, work through fit-up issues at the bench, and turn what you learn into the next design revision fast
- Support test stand build, instrumentation, and commissioning: sensor mounting, wiring, calibration, DAQ integration, first light, and commissioning runs
- Troubleshoot electromechanical systems hands-on: wiring harnesses, sensors, motor drivers, encoders, microcontrollers, and the code talking to them; multimeter, oscilloscope, and Python debugger in the same afternoon, root-causing failures and driving corrective actions back into the design
- Work AI-native: drive the scripting, analysis, and documentation around your hardware with AI coding agents, and help make the team's test and simulation infrastructure agent-ready so campaigns can run overnight without a human babysitting them
- Build and revise CAD models in PTC Creo and SolidWorks; develop drawing packages with GD&T (ASME Y14.5) for fabrication, weldments, and assemblies, run tolerance stack-up analyses, and iterate against fabrication feedback
- Support structural analysis across tracker platforms: first-principles hand calculations, ANSYS FEA for detailed analysis, SAP2000 for code-checked wind-load combinations under ASCE 7-22
- Maintain subsystem-level BOMs and handle vendor follow-ups: slew drives, optical components, fasteners, sheet-metal fabrication
- Document analysis, build progress, and decisions on the team wiki: methodology pages, test plans, weekly status, design memos
- Present and defend your own work in design reviews, growing into ownership of larger subsystems over time
- Collaborate with controls, software, and supply chain teams, and with external engineering partners and vendors

Qualifications:

- BS or MS in Mechanical Engineering, Aerospace Engineering, or a closely related discipline
- 1+ years of hands-on build or design experience with real hardware; internships, co-ops, research labs, and major project-team roles count
- Strong fundamentals in math and physics: you reason from first principles, estimate before you compute, and check every result against known limits before you believe it; we probe this hard in interviews
- Working knowledge of a parametric CAD tool; the team uses PTC Creo and SolidWorks
- Working understanding of GD&T (ASME Y14.5) and tolerance stack-up analysis
- Familiarity with common fabrication processes (machining, sheet metal, welding, 3D printing) and design-for-manufacturability and assembly (DFM/DFA) principles
- Ability to back up simulation with first-principles hand calculations, and to run structured root-cause analysis when hardware misbehaves
- A track record of building real hardware: internships, capstone projects, FSAE, solar car teams, robotics, makerspaces, or independent builds all count; bench experience matters more than coursework grades
- The drive to own the full cycle yourself: take an idea to CAD, to built hardware, to test, learn from the mistakes, and iterate quickly rather than handing steps off to others
- Comfort with shop and bench work: hand tools, fixturing, assembly, and careful mechanical work on precision hardware
- Coursework or hands-on project experience in solid mechanics, statics, dynamics, and finite element analysis
- Comfort troubleshooting electromechanical systems hands-on: wiring harnesses, sensors, motor drivers, encoders, microcontrollers, and the firmware or software talking to them
- Fluency with AI coding agents (Claude Code, Codex, or similar) as a daily engineering tool: you use them to write most of your code, and you own every line they produce, reviewed, tested, and understood; expect us to ask you to show how you work with AI the same way we ask about your bench skills
- The instinct to make work agentic: you can decompose a workflow into steps an agent can execute, with clean interfaces, verifiable checkpoints, and guardrails, and you have the judgment to catch an agent when it is confidently wrong; engineers who can direct several agents at once will outrun those who type everything themselves, and we hire the former
- Strong written communication: you can document your work clearly enough that the next engineer can pick it up without asking you
- The temperament to hold your ideas loosely: designs evolve weekly and priorities shift on real evidence; engineers who can let go and update move fastest

Preferred Qualifications:

- Hands-on experience assembling or aligning optical or precision mechanical hardware
- Experience with motion components and mechanisms: bearings, actuators, gear and slew drives, bolted and welded joint design
- Exposure to design validation and reliability practices: DFMEA, DVP&R, or environmental qualification testing
- Coursework or research in optical systems, photonics, heat transfer, or solar energy
- Hands-on experience with ANSYS, SAP2000, or another FEA package beyond classroom problem sets
- Python or MATLAB scripting: kinematics, data reduction, plotting
- Experience building agentic systems around real hardware or simulation: agents driving instruments, CAD, or simulation models through tool interfaces (MCP or similar), running parameter sweeps overnight, and summarizing the results; or any project where you gave an AI real levers and made its output trustworthy
- Lab or test-stand experience involving DAQ, instrumentation, or calibration
- Familiarity with controls fundamentals: open-loop versus closed-loop, sensor fusion concepts
- Interest in solar energy, heliostats, or large-scale renewable infrastructure

Additional Requirements:

- Willingness to work extended hours and occasional weekends when builds, test campaigns, or program deadlines demand it
- Ability to lift up to 25 lbs unassisted, and to work safely with shop tools, ladders, and lifts with appropriate PPE
- Ability to work outdoors in Miami heat during assembly and field testing
- Occasional travel to fabricators, vendors, and field sites

## 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)

## Other roles at Exowatt

- [Manufacturing/NPI Engineer - Optics](https://feeny.ai/job/manufacturing-npi-engineer-optics-exowatt-austin-8zr8f2bh2z0z) — Austin, TX
- [Contract Technician - Manufacturing & Assembly](https://feeny.ai/job/contract-technician-manufacturing-assembly-exowatt-austin-34pa870xp9db) — Austin, TX
- [Senior HR Business Partner (Contract to Hire)](https://feeny.ai/job/senior-hr-business-partner-contract-to-hire-exowatt-austin-44kpqe5w9xbs) — Austin, TX
- [Lead Power Electronics Engineer - MW-Class Multi-Port Power Conversion](https://feeny.ai/job/lead-power-electronics-engineer-mw-class-multi-port-power-conversion-exowatt-k4r7111dc3yc) — Miami, FL
- [Optomechanical Integration & Test Engineer (Miami, FL)](https://feeny.ai/job/optomechanical-integration-test-engineer-miami-fl-exowatt-miami-wjznej5tfr0e) — Miami, FL
- [Lead Optical Engineer (Austin, TX)](https://feeny.ai/job/lead-optical-engineer-austin-tx-exowatt-austin-9asgvetm2396) — Austin, TX
- [Lead Controls & Firmware Engineer (Austin, TX)](https://feeny.ai/job/lead-controls-firmware-engineer-austin-tx-exowatt-austin-vjtjt2fej397) — Austin, TX
- [Lead Mechanical Engineer - Structures (Austin, TX)](https://feeny.ai/job/lead-mechanical-engineer-structures-austin-tx-exowatt-austin-1ct3d105xqgg) — Austin, TX
- [Lead Mechanical Engineer - Heat Exchangers (Austin, TX)](https://feeny.ai/job/lead-mechanical-engineer-heat-exchangers-austin-tx-exowatt-austin-2saeavs68ecg) — Austin, TX
- [Power Systems Engineer - EMT Modeling/Simulation & Test Validation](https://feeny.ai/job/power-systems-engineer-emt-modeling-simulation-test-validation-exowatt-miami-0cwyywqbdxt2) — Miami, FL