• Skip to primary navigation
  • Skip to main content
  • Skip to footer

Side Hustles

Side Hustles

Side Hustles For All

  • Best Side Hustles
    • Woman sitting on a pile of coins and working on a laptop surrounded by icons representing different side hustle ideas

      31 Best Side Hustles to Earn Extra Money in 2026

    • Bicycle courier delivering food for their side hustle.

      What Is a Side Hustle?

    • Remote worker sitting at his desk making money from home

      18 Ways to Make Money from Home (Online and Offline Jobs)

    • By Category
      • Arts & Crafts
      • Business Services
      • Caregiving
      • Creative Services
      • Digital Freelance Services
      • View All
    • By Lifestyle
      • I’m introverted
      • I’m a man
      • I’m a woman
      • I’m a stay-at-home mom
      • I’m unique
      • View All
    • By Profession
      • Artists & Creatives
      • Musicians
      • Nurses
      • Physicians
      • Teachers
      • View All
    • By Age Group
      • College Students
      • Teens
      • Age 50+
      • Seniors
      • View All
    • By Skills & Interests
      • Get Paid to Lose Weight
      • Get Paid to Play Games
      • Get Paid to Read
      • Get Paid to Sleep
      • Get Paid to Travel
      • View All
  • Best Gig Apps
    • Freelance worker popping out of a phone screen and considering gig apps on the App Store and Google Play

      Top 6 Gig Apps to Make Real Cash in 2026

    • Smartphone surrounded by the icons of different money-making apps

      Top 10 Best Money-Making Apps to Try in 2026

    • two teenagers using job apps on a phone and laptop

      19 Job Apps for Teens to Find Jobs and Make Money

    • By Gig Type
      • Cashback
      • Data Entry
      • Delivery
      • Games
      • Product Testing
      • View All
    • By Payment Method
      • Bingo Games that Pay to Cash App
      • Games that Pay Real Money
      • Games that Pay to Cash App
      • Games that Pay via PayPal
      • Surveys that Pay to Cash App
      • View All
    • By Benefits
      • $20 Signup Bonuses
      • $25 Signup Bonuses
      • $50 Signup Bonuses
      • Best Signup Bonuses
      • Instant Signup Bonuses
      • View All
    • By Skills & Interests
      • Driving
      • Losing Weight
      • Playing Games
      • Product Testing
      • Watching Ads
      • View All
  • Job Hunting
    • Freelance worker browsing a job post on a freelance job board.

      23 Job Boards You Can Use to Find Remote Work

    • Freelance writer sitting at her laptop working on a project

      15 Best Remote Jobs That Require No Paid Work Experience

    • Teenager sitting at laptop working an online job

      14 Online Jobs for Teens (With No Experience)

    • Freelancing
      • Freelance Writing Sites
      • Freelance Writing Job Boards
      • Freelance Writing Platforms
      • View More
    • Gig & Shift Work
      • Gig Work Apps
      • On-Demand Work Apps
      • Shift Work Apps
      • View More
    • GPT (Get Paid To)
      • Microtasking
      • Product Testing
      • Survey Taking
      • View More
    • Remote Working
      • Best Remote Job Boards
      • Top 15 Remote Jobs
      • View More
  • Job Board
    • Work Schedule
      • Part-Time Jobs
      • Per-Diem Jobs
      • Go Search
    • Work Environment
      • Hybrid Jobs
      • Remote Jobs
      • Go Search
    • Employment Type
      • Contractor Jobs
      • Internship Jobs
      • Temporary Jobs
      • Go Search
    • Job Title
      • Accounting Jobs
      • Data Entry Jobs
      • Nursing Jobs
      • Online Teaching Jobs
      • Software Engineer Jobs
      • Go Search
    • State
      • California Jobs
      • Florida Jobs
      • New York Jobs
      • Pennsylvania Jobs
      • Texas Jobs
      • Go Search
    • City
      • Chicago, IL
      • Houston, TX
      • Los Angeles, CA
      • New York City, NY
      • Phoenix, AZ
      • Go Search

Home Flexible Job Board Mechanical Engineer

Salary Unstated 154d ago

Mechanical Engineer

Boost your chances before you apply.

  • ✨ Apply 10x Faster Free

    It takes 30+ tailored applications to land jobs like this one. We'll help you get that done in 1 hour.

    No Credit Card Required

  • Proceed to Application Go directly to the company's job page to apply.
Logo

EnergyX

Austin, TX, US

On-site

✨ Apply 10x Faster

Analyze your resume for missing keywords, then one-click optimize it. Don't be anything less than a 100% match candidate.

Free

No Credit Card Required

Summary

The Mechanical Engineer will lead mechanical engineering activities for lithium separation systems, managing critical equipment packages from concept through commissioning. They will collaborate with vendors and engineering firms to optimize demonstration plants and support the scale-up to commercial operations.

Job Description

Energy Exploration Technologies has a mission to become a worldwide leader in the global transition to sustainable energy. Founded in 2018, the company is fundamentally changing the way humanity is powering our world and storing clean energy with breakthrough lithium-ion technology and energy storage solutions.

The Role

The Mechanical Engineer will own key process equipment packages, work directly with vendors and engineering firms, and help optimize two demonstration plants to achieve target productivity, operability, and cost-effective commercial design. This role bridges pilot and demonstration operations with commercial engineering.

Key Responsibilities

• Lead mechanical engineering activities for pilot, demonstration, and early commercial lithium separation systems, with responsibility for one or more critical equipment packages.

• Translate process development and process design package (PDP/PDS) requirements into practical, reliable, and cost-effective equipment and plant designs.

• Develop and review process flow diagrams (PFDs), piping and instrumentation diagrams (P&IDs), equipment layouts, utility requirements, hydraulic calculations, and equipment data sheets.

• Collaborate with process engineers, operations personnel, vendors, construction partners, and external engineering firms to support scale-up from demonstration to commercialization.

• Support optimization, modification, troubleshooting, and ramp-up of two demonstration plants.

Commercial Engineering Scope

• Own vendor engagement for major process equipment packages such as filtration, drying, evaporation, separation, micronizing, thickening, pumps, valves, tanks, heat exchangers, and water treatment systems.

• Prepare or support technical bid packages, review vendor proposals, compare technical options, and drive equipment selection based on performance, operability, maintainability, and total installed cost.

• Review and revise vendor mechanical designs, P&IDs, specifications, and expected performance to align with EnergyX process requirements and simplify the commercial plant design where possible.

• Work closely with external engineering firms on equipment integration, plot plans, plant layout, utilities, and interdisciplinary design coordination.

• Support design reviews, HAZOP/operability discussions, and field issue resolution during engineering, fabrication, installation, and commissioning.

• Travel to vendor, fabricator, engineering firm, or project sites as needed during detailed engineering and equipment delivery.

Demonstration Plant Scope

• Support commissioning, startup, troubleshooting, and continuous improvement activities for two demonstration projects.

• Identify bottlenecks in equipment, key components, and flow systems; propose and implement modifications that improve capacity, reliability, and ease of operation.

• Collect and interpret operating data to recommend design improvements for the next scale of deployment.

• Partner with operators and technicians to improve equipment maintainability, spare parts planning, and standard operating practices.

Required Qualifications

• Bachelor's degree in Mechanical Engineering or a related discipline.

• 3-5+ years of mechanical engineering experience in chemical processing, minerals processing, water treatment, or a similar industrial environment.

• Experience developing, reviewing, and checking PFDs, P&IDs, equipment specifications, general arrangement drawings, and vendor packages.

• Working knowledge of industrial equipment including piping systems, valves (manual, control, and relief), pumps, pressure vessels, filters, coalescers, columns, evaporators, tanks, heat exchangers, and reactors.

• Proficiency with CAD tools such as AutoCAD and/or SolidWorks.

• Knowledge of applicable design codes and standards such as ASME, DIN/EN, and related regulatory requirements.

• Demonstrated ability to troubleshoot equipment, communicate effectively with vendors, and work across process, operations, and project teams.

Preferred Qualifications

• Experience supporting pilot plants, demonstration plants, or first-of-a-kind process scale-up projects.

• Experience working directly with fabrication shops, OEMs, EPC/EPCM firms, or construction contractors.

• Spanish language proficiency.

Success in This Role

• Drive critical equipment packages from concept through vendor selection, design review, fabrication support, and commissioning.

• Help demonstration plants achieve target production rates and stable operation.

• Contribute to a simpler, more robust, and more cost-effective commercial plant design.

Work Environment

This position is based in Austin, Texas. Travel to vendor facilities, engineering partners, project sites, and international locations in South America may be required - up to 25% travel.

What we Offer

  • Competitive pay 
  • Paid time-off, holidays, and sick time 
  • 401(k) with employer match  
  • Equity Package 
  • Medical, dental and vision benefits with employer contribution; voluntary benefits available 

EnergyX is an Equal Opportunity Employer; employment with EnergyX is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.

About the company

EnergyX

EnergyX is a sustainable energy company focused on direct lithium extraction, refinery and battery technology. Combining these technologies from brine to battery will create a process dramatically lowering the cost of lithium resources. The company’s goal is to develop technology and assets that turn it into one of the premier, low-cost lithium providers for the growing lithium-ion battery industry.

The electric vehicle (EV) and energy storage revolution is generating high demand for lithium, with some analysts forecasting orders-of-magnitude demand increases. As the EV market rapidly expands, millions of large-scale battery packs will be in demand. The estimated annual production of EV’s is 20,000,000 per year. For one 85-kWh car, the price of the lithium in the battery is approximately $2,945 per car. Residential (home) and commercial batteries are also gaining market demand traction, and California has implemented law stating by 2020 all new homes will require solar arrays.

Companies already producing lithium are attempting to increase production as battery cell manufacturers are scaling up lithium-ion production with mega factories and actively acquiring raw materials through long term off-take supply agreements. In the Lithium Triangle, where 50-70% of the world’s known lithium reserve is located, current methods of extraction are based off outdated, natural evaporation pond technology, which takes 18 months, and loses 50-70% of the lithium due to co-precipitation.

Our solution is to optimize and apply a highly scalable lithium extraction membrane to the process. The ability to efficiently extract and aggregate the lithium elements from the salt brines using proprietary, multi-level, synthetic ion separation techniques can increase time efficiency by 100x and recovery rate by 300%.

Company size

51-200 employees

Industry

Services for Renewable Energy

Org type

Privately Held

Headquarters

Austin, Texas

Apply Now

About the company

EnergyX

EnergyX is a sustainable energy company focused on direct lithium extraction, refinery and battery technology. Combining these technologies from brine to battery will create a process dramatically lowering the cost of lithium resources. The company’s goal is to develop technology and assets that turn it into one of the premier, low-cost lithium providers for the growing lithium-ion battery industry.

The electric vehicle (EV) and energy storage revolution is generating high demand for lithium, with some analysts forecasting orders-of-magnitude demand increases. As the EV market rapidly expands, millions of large-scale battery packs will be in demand. The estimated annual production of EV’s is 20,000,000 per year. For one 85-kWh car, the price of the lithium in the battery is approximately $2,945 per car. Residential (home) and commercial batteries are also gaining market demand traction, and California has implemented law stating by 2020 all new homes will require solar arrays.

Companies already producing lithium are attempting to increase production as battery cell manufacturers are scaling up lithium-ion production with mega factories and actively acquiring raw materials through long term off-take supply agreements. In the Lithium Triangle, where 50-70% of the world’s known lithium reserve is located, current methods of extraction are based off outdated, natural evaporation pond technology, which takes 18 months, and loses 50-70% of the lithium due to co-precipitation.

Our solution is to optimize and apply a highly scalable lithium extraction membrane to the process. The ability to efficiently extract and aggregate the lithium elements from the salt brines using proprietary, multi-level, synthetic ion separation techniques can increase time efficiency by 100x and recovery rate by 300%.

Company size

51-200 employees

Industry

Services for Renewable Energy

Org type

Privately Held

Headquarters

Austin, Texas

Footer

sidehustles.com
Facebook Twitter Instagram LinkedIn Reddit TikTok YouTube

Show Me The Money

  • Side Hustle Basics
  • Side Hustle Job Board (Remote & Part-Time Jobs)
  • Gig App Reviews
  • Job Hunting
  • Manage Your Money
  • The Gig Apple: News & Events

Company

  • About Us
  • Contact Us
  • Become a Contributor
  • Advertising & Sponsorships
  • Partner With Us
  • Editorial Guidelines

Side Hustles © All rights reserved

  • Privacy Policy
  • Terms of Service

Thanks for using our free job board

Your review would mean a lot to us.

If you love that we're just giving away remote jobs for free with no paywall, please spread the word. (You will need to create an account on Trustpilot, for which we'll be eternally grateful.) Good luck out there!

Leave a Review Not yet. Send me to the job post.