Phoenix Tailings

Phoenix Tailings

7.3. Mechanical Engineer II

Burlington, MA · Mid

Sponsorship not specified$90k-$120kDetected 28 days ago
Data AnalysisProcurementSolidWorksMechanical DesignActuators

About the role

  • About Phoenix Tailings Phoenix Tailings is a rapidly-growing clean mining and metals production startup dedicated to sustainable and economic critical metals production.
  • If you are someone who shares our relentless pursuit of a better future, passion for innovation, and are excited about working with some of the top innovators in the world, then this is the place for you.
  • This is a hands-on engineering role for someone who thrives in a fast-paced R&D environment and is excited by the challenge of turning ambitious concepts into reliable, deployed hardware.

Responsibilities

  • Own mechanical systems and equipment from early concept development through design, fabrication, testing, commissioning, and deployment.
  • Design and develop novel processing equipment for high-temperature electrolysis, furnace systems, and critical metals production technologies.
  • Create 3D CAD models, assemblies, drawings, and technical documentation using SolidWorks to support fabrication, procurement, assembly, installation, and commissioning.
  • Select and specify critical mechanical components and mechanisms, including pumps, bearings, lead screws, actuators, seals, thermal components, fixtures, and industrial hardware based on engineering analysis and test data.
  • Develop and execute verification and validation plans for components, subsystems, and integrated equipment to prove performance, reliability, and readiness for deployment.
  • Use Design of Experiments, structured testing, and data analysis to validate new concepts, troubleshoot equipment performance, and make sound engineering decisions.
  • Build, assemble, modify, and commission mechanical tooling, fixtures, prototypes, and pilot-scale equipment in hands-on lab, R&D, and production environments.
  • Apply V-Model system development principles to connect requirements, system architecture, detailed design, integration, testing, validation, and deployment.
  • Investigate mechanical, thermal, vacuum, and process-related issues, identify root causes, and implement practical design improvements that move technology forward.
  • Drive rapid design-build-test iterations with urgency while maintaining sound engineering judgment, safety, and documentation discipline.

Requirements

  • Bachelor's degree in Mechanical Engineering or a related engineering discipline.
  • Familiarity with V-Model (V-Diagram) based system development methodologies
  • Hands-on experience with mechanical tooling, fixtures, prototype assembly, equipment troubleshooting, and commissioning in a lab, pilot, manufacturing, or industrial environment.
  • Ability to lift up to 50lbs
  • 3+ years of mechanical engineering experience designing, building, testing, and commissioning complex equipment, industrial systems, process hardware, or R&D systems.
  • Strong SolidWorks experience, including part design, assemblies, detailed drawings, and design documentation for fabrication and assembly.
  • Experience developing and executing test plans for system, subsystem, or component verification and validation.
  • Experience selecting and integrating mechanical components such as pumps, actuators, bearings, lead screws, seals, fasteners, thermal systems, and industrial hardware.
  • Able to wear a respirator
  • We offer a competitive compensation package that is based on expertise. We also offer the following benefits:
  • This pay range reflects best estimate for the total cash compensation which includes salary + discretionary bonus for this role. Total package may vary based on experience and qualifications.

Compensation

  • $90,000- $120,000 total cash compensation plus equity

Benefits

  • This pay range reflects best estimate for the total cash compensation which includes salary + discretionary bonus for this role.
  • 100% Medical, dental, and vision coverage for employee.
  • Unlimited PTO.
  • Stock Options: Ownership in a fast-growing venture-backed company.
  • Learning: Learning and development opportunities to grow your skills and career.

Company info

  • You are only crazy if you are wrong, it's ok to be wrong ● Lead with Compassion ● Be Resourceful ● Listen ●
  • Phoenix Tailings is looking for a Mechanical Engineer II to help take next-generation processing equipment from concept to deployment.
  • In this role, you will design, build, test, validate, and commission complex mechanical systems that support high-temperature electrolysis, furnace technologies, and innovative electrochemical and thermal processes.
  • You will work on first-of-a-kind equipment that combines mechanical, thermal, vacuum, and process engineering to solve complex challenges at the forefront of industrial decarbonization, advanced manufacturing, and critical metals production.
  • Our mission is to be the world's first fully clean mining and metals production company, producing the resources needed for the next generation of our economy.
  • Why Phoenix Tailings At Phoenix Tailings, we believe that nothing great is ever accomplished alone or without the passion of people who push and motivate one another.
  • Ownership in a fast-growing venture-backed company.

This listing is sourced directly from Phoenix Tailings's careers page and normalized into a canonical job model.