Panthalassa
CleanTech & EnergyDirect Greenhouse career site

Senior Mechanical Engineer, Structures

Pay
$160,000 – $210,000 per year
Location
Portland, OR · On-site
Job type
Full-time
Level
Director
Experience
5+ years
Education
Bachelor's degree
Listed
30 days ago

Skills & highlights for this role

  • strength and stability hand calculations
  • GD&T
  • CAD assembly management
  • mechanics of materials

Also useful

  • NX/Teamcenter
  • NASTRAN/Simcenter
  • DNV/ABS/AWS D1.1 codes

Stated benefits & perks

  • Health insurance
  • Dental
  • Vision
  • Disability insurance
  • 401k

About the Job

We are developing a core technology, the "Node", that will operate in the worst conditions the world's oceans have to offer for years at a time without human maintenance or intervention.

As a Senior Mechanical Engineer, Structures you will own the design, development, and analysis of Node structures and subsystems from concept through deployment at sea, ensuring their designs are simple, manufacturable, and reliable in demanding offshore environments.

This position requires a highly motivated, hands-on engineer who thrives in ambiguity, can execute with autonomy, and is eager to take on end-to-end ownership, defining requirements and architecture and driving through design, prototype testing, and final build at our factory. The job requires a deep understanding of load paths, design for manufacturability, welded structures, subassembly design, and fabrication.

We expect you to be especially strong in analysis and to gravitate toward first-principles, fundamental-physics approaches to problem solving. As one of the most experienced engineers on the team, you will set the technical bar, serving as a person whose judgment the team leans on when the right answer isn't obvious.

Candidates should have strong interpersonal skills and be able to thrive in a creative, scrappy, and collaborative environment in which the best ideas change the company's direction on a regular basis. You will own your designs cradle-to-grave, from first concept through fabrication and deployment at sea. If you are an excellent engineer, regardless of your background, we want you to apply.

Responsibilities

  • Own the design, analysis, and development of Node structures, secondary structures, and subassemblies.
  • Perform structural and dynamic analysis (FEA, hand calcs, margins, etc.) to validate designs including fatigue analysis.
  • Steer system definition, layout, requirements, and verification.
  • Create and maintain component and assembly CAD models.
  • Create detailed component and assembly drawings with a strong grasp of geometric dimensioning and tolerancing (GD&T) and tolerance stack-ups.
  • Drive design trade studies and engineering reviews, helping document decisions and technical findings.
  • Drive material selection and corrosion-conscious detailing for long-duration seawater service.
  • Plan and support structural validation testing, from coupon/component tests through prototype and at-sea trials.
  • Collaborate with offshore operations, technicians, and manufacturing teams to ensure designs are practical and buildable.
  • Mentor less-experienced engineers and set design and analysis standards the team builds on.

Required Qualifications

  • Bachelor's or Master's degree in Mechanical Engineering, Aerospace Engineering, Naval Architecture, or a related technical field.
  • 5+ years of experience in designing mechanical or structural systems for complex hardware applications.
  • Strong knowledge of strength and stability hand calculations for structural sizing and model validation.
  • Strong understanding of mechanics of materials, material failure modes, and associated analysis methods.
  • Familiarity with a wide set of manufacturing processes such as machining, welding, forming, and joining methods.
  • Proficiency with CAD software and assembly management.
  • Strong communication skills and the ability to work collaboratively across multidisciplinary teams in a fast-paced environment.

Desired Qualifications

  • Master's degree in Mechanical Engineering, Aerospace Engineering, Naval Architecture, or a related technical field.
  • 7+ years of demonstrated experience designing and analyzing primary structures subject to aerodynamic or hydrodynamic loads.
  • Proficiency with NX/Teamcenter.
  • Proficiency with NASTRAN/Simcenter.
  • Experience designing welded steel structures.
  • Experience utilizing relevant parts of codes/standards (e.g., DNV, ABS, AWS D1.1, BPVC) for novel applications.

Additional information

The above qualifications are desired, not required. We encourage you to apply if you are a strong candidate with only some of the desired skills and experience listed.

Compensation and Benefits

If hired for this full-time role, you will receive

  • Cash compensation of $160,000 - $210,000.
  • Equity in the company. We're all owners and if we're successful, this equity should be far and away the most valuable component of your compensation.
  • A benefits package that helps you take care of yourself and your family, including:
  • Flexible paid time off
  • Health insurance (the company pays 100% of gold-level PPO plan for full-time employees, their partners, and dependents)
  • Dental insurance (the company pays 100% for full-time employees, their partners, and dependents)
  • Vision insurance (the company pays 100% for full-time employees, their partners, and dependents)
  • Disability insurance (the company pays 100% for a policy to provide long-term financial support if you become disabled)
  • Ability to contribute to tax-advantaged accounts, including 401(k), health FSA, and dependent care FSA
  • Relocation assistance to facilitate your move to Portland (if needed).

Location

This is an on-site position. Our offices, lab, and shop are located in Portland, Oregon.

About the Company

We are a renewable energy and ocean technology company committed to rapidly developing and deploying technologies that will ensure a sustainable future for Earth by unlocking the vast energy potential of its oceans. Our focus is on capturing civilizational levels of ultra-low-cost renewable energy for applications including computing and affordable renewable fuels delivered to shore.

The company is a public benefit corporation headquartered in Portland, Oregon, and backed by leading venture capitalists, philanthropic investors, university endowments, and private investment offices. We operate as an idea meritocracy in which the best ideas change the company's direction on a regular basis.

Our staff have worked at organizations such as SpaceX, Blue Origin, Boeing, Tesla, Apple, Virgin Orbit, Astra, Google, Amazon, Microsoft, New Relic, Bridgewater, Raytheon, Disney Imagineering, and the US Army and Air Force, as well as research universities, startups, and small companies across a range of industries.

Read the original posting

From Panthalassa's careers page, first listed on Rolev.ai on October 10, 2026. Rolev.ai is not the employer.

How Rolev.ai helps with this application

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Common questions

What is the salary for the Senior Mechanical Engineer, Structures role at Panthalassa?

The Senior Mechanical Engineer, Structures posting at Panthalassa states compensation of $160,000 – $210,000 per year. It is listed as a full-time position. Final pay may depend on location, experience, and interview evaluation on Panthalassa's official career site.

Where is the Senior Mechanical Engineer, Structures job at Panthalassa located?

This Senior Mechanical Engineer, Structures position at Panthalassa is located in Portland, OR (On-site). Always check Panthalassa's application page for specific state eligibility or relocation policies.

What qualifications are required for Senior Mechanical Engineer, Structures at Panthalassa?

For the Senior Mechanical Engineer, Structures role, Panthalassa highlights 5+ years of relevant experience; a bachelor's degree; experience with strength and stability hand calculations, GD&T, CAD assembly management, mechanics of materials. Rolev.ai can score your existing resume against these requirements and show any skill gaps before you apply.

How do I apply for the Senior Mechanical Engineer, Structures position at Panthalassa?

This listing links directly to Panthalassa's Greenhouse application page. You can apply directly on Panthalassa's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Greenhouse application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.