Mechanical Engineer II

Phoenix Tailings; Burlington (MA); On-site; USD 90,000 - 120,000; Full time

Benefits offered by this job

100% medical, dental, and vision coverage

Unlimited PTO

Learning and development opportunities

Job summary

Phoenix Tailings, located in Burlington, Massachusetts, is seeking a Mechanical Engineer II to design and validate next-generation processing equipment. This hands-on role involves working on innovative mechanical systems at the forefront of industrial decarbonization and critical metals production.

The ideal candidate will have a Bachelor's degree in Mechanical Engineering and substantial experience in R&D environments. Salary ranges from $90,000 to $120,000 with equity options and comprehensive benefits including 100% healthcare coverage.

Qualifications

• 3+ years of mechanical engineering experience in R&D or industrial environments.
• Familiarity with V-Model based system development methodologies.
• Hands-on experience with mechanical tooling and equipment troubleshooting.

Responsibilities

• Own mechanical systems from concept to deployment.
• Create CAD models and technical documentation.
• Design novel processing equipment for critical metals production.

Skills

Mechanical Engineering

SolidWorks

System Validation

CAD Modeling

Experiment Design

Education

Bachelor’s degree in Mechanical Engineering

Tools

SolidWorks

Job description

About Phoenix Tailings

Phoenix Tailings is a rapidly‑growing clean mining and metals production startup dedicated to sustainable and economic 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.

Mechanical Engineer II – Position Overview

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.

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. 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.

Key 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.

Qualifications

• Bachelor’s degree in Mechanical Engineering or a related engineering discipline.
• 3+ years of mechanical engineering experience designing, building, testing, and commissioning complex equipment, industrial systems, process hardware, or R&D systems.
• Familiarity with V‑Model (V‑Diagram) based system development methodologies.
• 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.
• Hands‑on experience with mechanical tooling, fixtures, prototype assembly, equipment troubleshooting, and commissioning in a lab, pilot, manufacturing, or industrial environment.
• Able to wear a respirator.
• Ability to lift up to 50 lbs.

Benefits and Compensation

Pay range: $90,000–$120,000 total cash compensation plus equity. Total package may vary based on experience and qualifications.

• Healthcare: 100% medical, dental, and vision coverage for employee.
• Stock options: Ownership in a fast‑growing venture‑backed company.
• Time off: Unlimited PTO.
• Learning: Learning and development opportunities to grow your skills and career.