Senior Mechanical Design Engineer

Senior Mechanical Design Engineer

Blykalla AB

What we do at Blykalla Blykalla is a Swedish deep-tech company at the forefront of the nuclear industry, pioneering the development of small modular reactors that provide clean, safe, and reliable energy. Thanks to lead-cooling, we achieve high safety in a very compact format, allowing for a simple and cost-effective design that can be mass-produced. Our unique reactor design will provide safe and green baseload energy that perfectly complements solar and wind power. Are you a skilled mechanical engineer with a passion for solving complex design challenges? Do you enjoy hands-on engineering work in a fast-paced environment where your contributions have real impact? Join Blykalla, Sweden's pioneer in next-generation nuclear energy, as a Senior Mechanical Design Engineer. What you’ll get to do As a Senior Mechanical Design Engineer, you will work as a key technical contributor in the design, analysis, and development of mechanical systems for our SMRs. The role is strongly hands-on and focused on detailed mechanical design, engineering analysis, and close collaboration with colleagues across disciplines. You will thrive in this role if you: Enjoy deep technical work and hands-on mechanical design. Take ownership of your deliverables and see them through to completion. Question assumptions and continuously seek better engineering solutions. Are comfortable working in an agile, fast-moving environment. Value open, respectful communication and teamwork. Key Responsibilities Design and develop mechanical components and systems for SMR applications, from concept through detailed design. Produce detailed 3D CAD models, drawings, and technical documentation. Interpret, implement, and trace requirements throughout the design process. Critically evaluate results from mechanical, thermal, and fluid analyses and iterate designs accordingly. Support prototyping, testing, and design verification activities. Collaborate with R&D, safety, and manufacturing teams to ensure robust and compliant designs. Ensure designs meet applicable industry standards, safety requirements, and quality processes. Communicate technical progress and design decisions within project teams. Who’ll you’ll get to work with The Senior Mechanical Design Engineer sits in the engineering team within Blykalla, and reports to the Mechanical Engineering Manager. We are a diverse team that is passionate about our work and Blykalla. Who you are You will be part of a highly skilled engineering team with a strong sense of ownership and curiosity. To succeed in this role, we believe you bring the following: Required: Bachelor's or Master's degree in Mechanical Engineering or a related field. 8 or more years of experience in mechanical design engineering, with a strong focus on 3D CAD and design of large-scale components. Broad mechanical engineering expertise spanning design and manufacturing. Experience working in regulated industries with structured engineering processes, safety regulations, and quality requirements. Strong problem-solving skills and attention to detail. Excellent communication and collaboration skills. Fluency in spoken and written English. Considered a merit: Experience from the nuclear industry, including familiarity with nuclear codes and standards (e.g. ASME, RCC) and nuclear quality assurance processes. Experience with FEM simulations and/or thermal or fluid simulations (CFD). Experience with risk assessment methods such as FMEA. Fluency in Swedish.

Senior Mechanical Design Engineer

Interstellar Lab

Senior Mechanical Design Engineer Full-time In-person   At Interstellar Lab, our mission is to build a future full of life, on Earth and beyond. We believe in a world where technology enables humans to live in harmony with nature, where biodiversity thrives and expands, and where terrestrial life becomes multi-planetary. To build this future, we design autonomous biospheric systems to grow plants with precision, on Earth and in Space. Our AI-powered BioPods and BioCapsules leverage biosciences to reproduce and optimize growth conditions for a wide variety of high-value plants. On Earth, we pioneer molecular and biofarming, boosting the production of metabolites and bioactive compounds while offering sustainable, traceable, and high-quality natural ingredients to the beauty, fragrance, pharmaceutical, and nutraceutical industries. In space, we collaborate with agencies and private companies to develop biofarming units that advance life science research in microgravity and lay the foundation for future biofactories in space, enabling innovative terrestrial applications and long-duration space missions.   About the Role As Senior Mechanical Design Engineer, you will lead the design and development of mechanical systems for Interstellar Lab’s biospheric technologies. You will work across the full product lifecycle, from early concepts and prototyping to manufacturing and industrialization, ensuring that every component meets performance, reliability, and cost objectives. This role requires strong ownership, curiosity, and the ability to collaborate across disciplines in a fast-paced, mission-driven environment.   Responsibilities * Lead mechanical design from concept to production, balancing performance, cost, and manufacturability * Develop 3D CAD models and detailed 2D drawings using Onshape or equivalent software * Collaborate with electrical, software, and systems engineers to ensure integration and serviceability * Manage large assemblies and ensure configuration control across design revisions * Support prototyping, testing, and validation activities to verify design performance * Optimize designs for industrialization and coordinate with manufacturing partners * Ensure compliance with design standards, reliability criteria, and DFM best practices * Participate in design reviews and provide technical guidance within the engineering team   Profile / Qualifications * Bachelor’s or Master’s degree in mechanical engineering or equivalent * 6+ years of experience in mechanical design, analysis, and manufacturing * Expertise in CAD design (Onshape, SolidWorks, or CATIA) and large assembly management * Solid understanding of materials, mechanical analysis, and industrial processes * Experience with product testing, validation, and design for manufacturability * Comfortable with hands-on prototyping and integration in workshop environments * Strong problem-solving, communication, and teamwork skills * Fluent in English, proficiency in French is a plus   Equal Opportunity Interstellar Lab is proud to be an equal opportunity employer. Interstellar Lab does not discriminate on the basis of race, regional color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with disability, or other applicable legally protected characteristics.

Principal / Senior Mechanical Design Engineer (All Genders)

STARK

ABOUT US STARK is a new kind of defence technology company revolutionizing the way autonomous systems are deployed across multiple domains. We design, develop and manufacture high performance unmanned systems that are software-defined, mass-scalable, and cost effective. This provides our operators with a decisive edge in highly contested environments. We’re focused on delivering deployable, high-performance systems - not future promises. In a time of rising threats, STARK is bolstering the technological edge of NATO Allies and their Partners to deter aggression and defend Europe - today. YOUR MISSION As our Senior Mechanical Design Engineer, you will own the mechanical architecture of STARK’s next-generation UAV platforms from concept to high-rate production. You will set technical direction, mentor engineers, and work closely with cross-functional teams to deliver highly reliable, certifiable, and field-deployable systems under aggressive timelines. You will both define mechanical design strategy and dive deep into CAD, tolerance stacks, and Design for Manufacture/Assembly (DFMA) prototypes. You will act as the company’s authority on mechanical design for airframes and payload integration, influencing platform-level decisions and ensuring designs are robust, scalable, cost-effective for mass production, and certifiable. RESPONSIBILITIES * Lead mechanical design for UK current and future UAV platforms * Define and enforce best practices for parametric modeling, GD&T, and tolerance stack-ups * Drive airframe material selection, structural layout, and manufacturability decisions * Oversee supplier engagement for structural components, composites, and assemblies Collaborate with stress, flight test, and systems teams to ensure structural integrity * Support and occasionally lead design reviews with leadership, partners, and certifying authorities * Lead mechanical design for UK current and future UAV platforms, focusing on design-for-manufacture (DFM) and high-rate production methods * Define and enforce best practices for parametric modeling, GD&T, and tolerance stack-ups, with an emphasis on production efficiency * Collaborate with stress, flight test, and systems teams to ensure structural integrity while optimising designs for mass production * Support and occasionally lead design reviews with leadership, partners, and certifying authorities, presenting trade-offs for production scale * Be hands-on with CAD (SolidWorks/CATIA), prototyping, and shop-floor troubleshooting, with a focus on process and design optimization for rate increase QUALIFICATIONS * Mechanical design experience, in ideally in aerospace / UAV / autonomous systems  * Proven record of taking structures from concept through verification to high rate production (wing, fuselage, empennage) * Expert in SolidWorks (CATIA V5/V6 a plus) and tolerance stack analysis * Strong knowledge of composites, 3D printing, machining, injection moulding, and joining methods * Familiarity with MIL standards and EASA/FAA certification pathways (SC-Light UAS, CS-23) * Excellent communication skills  - able to influence at exec and program level * Eligible for UK Security Clearance Our Commitment to the Armed Forces Community We are proud to hold the Bronze Award from the Defence Employer Recognition Scheme (ERS), reflecting our meaningful commitment and ongoing support for UK defence personnel. At our core, we believe in championing those who serve, those who have served, and their families. As part of this scheme, we are dedicated to providing an inclusive, supportive environment where members of the Armed Forces community can thrive and bring their invaluable skills to our team.