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Senior Mechanical Engineer
About Wellumio

Wellumio is a venture-backed medical device company on a mission to empower timely stroke intervention with rapid, point-of-care diagnostics.

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Magnetic resonance is the gold standard in medical imaging for acute stroke. Yet access is constrained by high costs, heavy infrastructure, and the need to move patients to fixed scanners. Instead of bringing patients to the scanner, Wellumio is building technology that brings the scanner to the patient.

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Wellumio’s MRI-based brain imaging system, Axana®, is a portable, energy-efficient scanner designed for point-of-care use in emergency departments, rural hospitals, and pre-hospital settings. Its first application is acute stroke, one of the leading causes of death and disability worldwide, where every minute of delay to treatment leads to further brain injury and worse long-term outcomes.

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By removing traditional barriers to diagnostic imaging and embedding Axana directly into frontline stroke workflows, Wellumio aims to enable earlier diagnosis, faster treatment, and better outcomes for patients globally.

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At Wellumio, you will:

  • Work with a talented, mission-driven team across clinical, engineering, and commercial disciplines.

  • Help build a novel point-of-care brain imaging technology from the ground up.

  • Operate in a fast-paced environment that rewards initiative, clear thinking, and impact.

About the Role

Wellumio is seeking a Senior Mechanical Engineer to take technical ownership of mechanical design and development across the Axana system. The role is suited to an experienced engineer who is strong in first-principles mechanical analysis, mechanism design, and design for manufacture and assembly, and who is comfortable making sound engineering decisions in a safety-critical product environment.

Direct medical device experience is highly valued, but it is not a requirement. We are equally interested in engineers from other safety-critical, regulated, or high-reliability industries who can bring strong mechanical fundamentals, practical design judgement, and disciplined engineering practice.

You will work closely with mechanical, electrical, RF, systems, quality, and manufacturing colleagues across the full product development lifecycle - from concept through detailed design, prototyping, verification, integration, and manufacturing readiness.

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Soft Skills Requirements

  • Strong problem-solving and analytical skills

  • Ability to work independently and as part of a team

  • Good communication and collaboration skills

  • Willingness to learn and continuously develop technical expertise

  • Professionalism, reliability, and attention to detail

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Key Responsibilities

  • Own the mechanical design and development of components and functional assemblies within a safety-critical system

  • Lead mechanical projects and workstreams, setting technical direction, coordinating activities, and driving decisions and delivery 

  • Translate performance, compliance, and usability/human factors inputs into practical mechanical requirements and design solutions, balancing user needs with safety, manufacturability, serviceability, and technical constraints. 

  • Develop robust mechanical concepts using sound engineering judgement and first-principles reasoning, supported by hand calculations, free-body diagrams, tolerance analysis, and appropriate simulation

  • Design structural elements and mechanisms with clear consideration of loads, stiffness, strength, fatigue, interfaces, failure modes, usability, and serviceability

  • Create and maintain high-quality 3D CAD models, detailed drawings, assemblies, and engineering documentation

  • Drive DFM/DFA from early design stages, working closely with suppliers and manufacturers to improve manufacturability, assembly, cost, quality, and repeatability

  • Support prototype builds, hands-on assembly, and testing, and lead the investigation and resolution of mechanical issues through iterative design improvements

  • Lead or contribute to risk analysis and FMEA, design reviews, verification activities, and technical documentation within a regulated product-development environment 

  • Design across electromechanical interfaces, considering practical integration details such as cable routing, connector access, strain relief, maintainability, and serviceability

  • Collaborate across electrical, RF, systems, industrial design, quality, and manufacturing functions to resolve system-level integration challenges

  • Provide technical review, coaching, and guidance to other engineers, and contribute to improving mechanical engineering practices, standards, and design quality across the team.

Qualifications & Experience

  • Bachelor’s degree in mechanical engineering or a closely related discipline, or equivalent practical engineering experience

  • 5+ years of relevant mechanical product-development experience, with demonstrated ownership of mechanical designs from concept and detailed design through prototyping, build, and test

  • Experience developing products where safety, reliability, quality, or regulatory requirements materially influence engineering decisions

  • Demonstrated experience leading technical projects or workstreams, making and communicating engineering decisions, and providing technical guidance to others

Technical Skills

  • Strong capability in first-principles mechanical analysis, including hand calculations, free-body diagrams, load paths, stress and deflection estimates, basic fatigue considerations, and tolerance analysis

  • Strong parametric 3D CAD capability with ability to produce clear, production-ready engineering drawings (SolidWorks & PDM experience preferred)

  • Strong practical knowledge of DFM and a range of manufacturing processes, including machining, sheet metal, plastics, additive manufacturing, and joining methods 

  • Practical understanding of design for assembly and serviceability (DFA/DFS), including assembly sequence, cable and connector management and maintenance access

  • Working knowledge of basic FEA, including defining appropriate loads, boundary conditions, and assumptions, and using simulation to support rather than replace first-principles analysis

  • Hands-on experience with prototyping, assembly, testing, troubleshooting, and iterative design

Soft Skills & Attributes

  • Strong attention to detail and commitment to product quality and safety

  • Comfortable working with ambiguity and turning requirements into practical, robust mechanical solutions

  • Practical, hands-on mindset with a bias toward pragmatic, simple, and testable solutions 

  • Collaborative and effective working across engineering disciplines, suppliers, manufacturing partners, and quality/regulatory functions

  • Curious and growth-oriented, actively seeking and sharing constructive feedback to support learning and development 

  • Clear communicator who can explain technical decisions and trade-offs and contribute constructively to design reviews

Nice to Have (but not required)

  • Medical device product-development experience, particularly with Class II / IIa devices

  • Experience working within formal design controls or regulated quality systems (e.g. ISO 13485), and exposure to medical-device risk management (ISO 14971)

  • Experience taking designs into pilot or volume manufacturing, including supplier engagement, tooling, assembly process development, and production issue resolution

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