--- title: 'Senior Mechanical Engineer, Structures at Panthalassa' canonical: 'https://feeny.ai/job/senior-mechanical-engineer-structures-panthalassa-portland-j4w00nmcxqmd' type: 'job' last_seen: '2026-11-04' --- # Senior Mechanical Engineer, Structures at Panthalassa - **Company:** Panthalassa - **Location:** Portland, OR - **Posted:** 2026-06-03 - **Last confirmed live:** 2026-11-04 - **Apply:** https://job-boards.greenhouse.io/panthalassa/jobs/6011785004 ## Job description ## 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. ## 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. 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 Panthalassa ## Company Overview - **One-liner**: Building a planetary-scale renewable energy platform from the ocean to power compute and more, starting with AI data centers. - **Entity Type**: Private (Series B) - **Headquarters**: Portland, Oregon, USA - **Founded**: 2016 - **Founders**: Garth Sheldon-Coulson (CEO); co-founders not publicly listed ## Core Business - **Primary industry**: Renewable energy / ocean technology - **Target customers**: B2B – enterprises needing clean, low-cost power for compute-intensive workloads (AI training/inference); data center operators - **Mission or purpose statement**: “To build a planetary-scale energy platform that’s clean, sustainable, and low-cost” (public-benefit corporation) ## Products & Services - **Panthalassa Node (Ocean-1 / Ocean-2 / Ocean-3 / Ocean-4)**: A self-propelled, wave-energy device that generates electricity onboard. The electricity powers AI compute modules housed in sealed, seawater-cooled containers below the surface. Nodes are deployed in fleets, communicate via Starlink, and are designed to be ultra-low-cost, zero-emissions, and rapidly scalable. (Type: Hardware + integrated service) ## Market Standing - **Valuation/Market Cap**: Not disclosed - **Key Metric**: Total funding raised – $193M (as of May 2026) - **Notable Investors/Partners**: Lead investor Peter Thiel; also Leblon Capital, Nimble Partners, Western Technology Investment, Portland Seed Fund, Sozo Ventures, and 27+ others (per CB Insights). Partners include SpaceX (Starlink), major aerospace/tech alumni on team. - **Growth Signals**: - $140M Series B announced May 2026 - 28 open job positions (as of July 2026), spanning engineering, manufacturing, marine operations, finance, IT - Ocean-3 pilot deployment planned for 2026, commercial deployments in 2027 - Transitioning from R&D to mass production and field operations - Team includes alumni from SpaceX, Google, Blue Origin, Apple, Boeing, Amazon, Tesla, NASA, etc. ## Competitive Advantages - **Unique wave-energy design**: No mooring, self-propelled, few moving parts, low maintenance - **Ocean-based compute paradigm**: Eliminates land and grid constraints for data centers; uses seawater for free cooling - **Scalability**: Devices can be mass-produced and deployed in thousands, operating autonomously as a fleet - **Cost advantage**: Claims to produce the “cleanest, cheapest energy on Earth” by avoiding transmission infrastructure and using open-ocean wave resources ## Strategic Focus - **Scale manufacturing**: Building work centers, processes, and test architecture for high-volume production of nodes - **Deploy pilot fleet**: Ocean-3 construction underway; proving commercial readiness in 2026–2027 - **Develop digital thread**: Architecting data flow from engineering through manufacturing, supply chain, quality, operations, and field service - **Expand team**: Hiring across engineering, manufacturing, marine ops, and business functions to support growth ## Why Work Here - **Culture**: Public-benefit corporation with a mission-driven, frontier-tech ethos. Values “taking the work seriously, but not ourselves.” Diverse backgrounds from aerospace, software, naval architecture, military, and research. - **Work environment**: Mostly on-site in Portland, OR (some hybrid roles, e.g., FP&A Manager). Strong emphasis on hands-on engineering, prototyping, and manufacturing. - **Notable perks**: Opportunity to work on a novel energy platform from concept through deployment; exposure to cross-disciplinary challenges (mechanical, electrical, marine, software, autonomy); be part of a high-growth startup post-Series B. - **Engineering culture**: Builders encouraged to own projects from design to field; emphasis on simple, manufacturable, reliable systems; use of modern tools and autonomy. ## Sources 1. [Panthalassa.com](https://panthalassa.com) 2. [Wikipedia](https://en.wikipedia.org/wiki/Panthalassa_(company)) 3. [CB Insights](https://www.cbinsights.com/company/panthalassa) 4. [Greenhouse Jobs](https://job-boards.greenhouse.io/panthalassa) ## Other roles at Panthalassa - [Prototype Fabricator](https://feeny.ai/job/prototype-fabricator-panthalassa-portland-vqrd3wd6dejp) — Portland, OR - [Senior Test Engineer, Mechanical and Fluid Systems](https://feeny.ai/job/senior-test-engineer-mechanical-and-fluid-systems-panthalassa-portland-819q6tp4xezs) — Portland, OR - [Deputy Node Lead](https://feeny.ai/job/deputy-node-lead-panthalassa-portland-2s93hhvc6ehv) — Portland, OR - [Associate Creative Director, Visualization](https://feeny.ai/job/associate-creative-director-visualization-panthalassa-portland-9cjwk9x05557) — Portland, OR - [Associate Creative Director, Film](https://feeny.ai/job/associate-creative-director-film-panthalassa-portland-92sq0s3tg1ew) — Portland, OR - [Supplier Industrialization Engineer, Fabrication](https://feeny.ai/job/supplier-industrialization-engineer-fabrication-panthalassa-portland-msjtgvakrh3x) — Portland, OR - [Global Supply Manager, Compute](https://feeny.ai/job/global-supply-manager-compute-panthalassa-portland-wq3c2aktx8zb) — Portland, OR - [Director, Site Operations](https://feeny.ai/job/director-site-operations-panthalassa-portland-cm9pr74vj6c8) — Portland, OR - [Director of Marine Environmental Impact](https://feeny.ai/job/director-of-marine-environmental-impact-panthalassa-portland-f1zhdsdwbb9f) — Portland, OR - [Senior Facilities Electrical Engineer](https://feeny.ai/job/senior-facilities-electrical-engineer-panthalassa-portland-5xgcg775t5h1) — Portland, OR