Senior Mechanical Analysis 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.

Ytsab Defence AB

Role Overview We are seeking a highly skilled and visionary Senior R&D Engineer (Electromagnetic Propulsion) to lead the physical modelling, simulation, and experimental validation of a next-generation, multistage Electromagnetic Launch System. In this role, you will bridge the gap between advanced physics theory and cutting-edge engineering. You will be responsible for defining the mathematical framework of inductance acceleration, optimizing pulsed-power efficiency, managing extreme thermal/mechanical stresses, and building physical prototypes to validate your models. If you thrive on solving highly complex, multi-physics problems and want to shape the future of high- velocity propulsion tech, this is your next challenge. Core Responsibilities 1. Physics Modelling & Electromagnetic Analysis  Develop the fundamental mathematical frameworks and multi-physics models (electromagnetic, thermal, and material physics) to describe inductance acceleration and transient system behaviours.  Investigate complex magnetic Lorentz forces, skin effects, and proximity effects acting on coils under high-frequency, time-varying currents.  Utilize advanced simulation tools to analyse a large parameter space (coil geometry, shape, size, and turn count) to optimize magnetic field production and projectile acceleration. 2. Multistage System Architecture & Optimization  Design and analyse multistage acceleration configurations, defining the optimal number of stages, mutual stage interactions, and microsecond-level activation timing architectures.  Optimize the stored-to-kinetic energy conversion efficiency by minimizing un-utilized magnetic flux, ohmic/resistive losses, and eddy current heating.  Define the boundary conditions, switching requirements, pulse shapes, and power regulation dependencies for the electrical and control subsystems. 3. Component Design & System Integration  Collaborate with external project partners to integrate custom-engineered, high-current pulsed-power coils optimized for mechanical stability and thermal resilience.  Oversee the concept design of specialized payloads to ensure seamless compatibility with the electromagnetic launch environment.  Address system-level integration challenges arising from high-intensity electromagnetic fields on surrounding components. 4. Thermal Management & Power Control  Identify transient heat sources within the accelerator stages and propose highly effective thermal management and cooling solutions.  Optimize the physical routing of the electrical power supply to the coil inductors to handle extreme stress environments. 5. Experimental Validation & Safety  Design, build, and operate an experimental test setup to validate simulation data, testing for acceleration efficiency, discharge pulse dynamics, and heat management.  Conduct comprehensive safety analyses on high-voltage and high-energy electromagnetic components.  Establish strict safety protocols and ensure total compliance with relevant electrical safety standards for pulsed-power operations. Required Technical Skills & Experience:  Education: Master’s or Ph.D. in Physics, Electrical Engineering, or a highly related field with a focus on Electromagnetics.  Simulation Mastery: Extensive experience with multi-physics simulation software (e.g., COMSOL, Altair Flux, or MATLAB/Simulink) focusing on transient electromagnetic fields.  Pulsed Power Expertise: Knowledge of inductance acceleration, magnetic forces, high-current switching, and power electronics.  Thermal & Mechanical Insight: Familiarity with managing thermal dissipation and mechanical stress in high-energy electrical systems.  Hands-on Testing: Experience setting up laboratory diagnostics, high-speed data acquisition systems, and working safely with high-voltage hardware. Preferred Attributes:  Experience in advanced aerospace or defence R&D, specifically in coil gun, or linear induction motor technologies.  Strong collaborative skills for working alongside external manufacturing and project partners.  A meticulous approach to safety protocols and risk analysis. What We Offer  Cutting-Edge Projects: Work on a disruptive, first-of-its-kind electromagnetic technology program.  Collaborative Culture: Join a highly collaborative environment alongside leading industry partners and academic experts.  Competitive Compensation: Attractive salary and continuous professional development paths. Due to the nature of this project, applicants must be eligible to obtain the required national security clearances. Öppen för alla Vi fokuserar på din kompetens, inte dina övriga förutsättningar. Vi är öppna för att anpassa rollen eller arbetsplatsen efter dina behov.

Lyten Labs AB

Lyten Sweden is seeking a professional Senior Battery Simulation Engineer o join our R&D organisation in Västerås. The Senior Battery Simulation & Modelling Engineer will develop and validate advanced simulation models for battery cells, including performance, degradation, thermal, swelling, and mechanical behaviour. The role supports current NMC products, future battery chemistries, and customer-facing simulation solutions. Key Responsibilities Key responsibilities include (but are not limited to) Battery Model Development Develop and maintain simulation models for battery cells, supporting current chemistry products and next-generation chemistries. Performance Modeling Develop and validate performance models, including ECM-based approaches, to predict battery behavior and support BMS applications. Lifetime & Degradation Modeling Develop and calibrate lifetime prediction models to accurately estimate battery aging, performance degradation, and end-of-life behavior. Thermal Modeling Develop 3D thermal simulation models to predict temperature distribution and support thermal management optimization. Swelling & Mechanical Modeling Develop swelling and mechanical models to predict cell expansion, deformation, and structural behavior throughout battery life. Safety & Venting Simulation Develop simulation models for vent deformation and pressure-related mechanical behavior to support battery safety assessments. Validation & Model Correlation Parameterize, validate, and continuously improve simulation models using experimental and product validation data. Customer Model Delivery Deliver validated simulation models to customers and provide technical support for performance, lifetime, thermal, and mechanical analyses. Cross-Functional Collaboration Work closely with cell design, materials, testing, and customer teams to support battery development and commercialization programs. Requirements Educational background and previous experience required for the role. Qualifications and Experience Bachelor or higher in Electrochemistry/chemistry/material/mechanical or a related discipline 8+ years of experience in lithium-ion battery development and modeling. Strong industrial experience supporting automotive, ESS, or other advanced battery programs. Proven experience developing simulation models for rechargeable battery systems. Experience working directly with OEM customers and customer-facing engineering projects. Experience with prismatic cell development is highly preferred. Specific skills Strong expertise in electrochemical, thermal, degradation, swelling, and mechanical battery modelling. Proficiency in MATLAB/Simulink, Python, COMSOL Multiphysics, LS-DYNA, and ANSYS simulation tools. Experience in model parameterization, validation, optimization, and correlation with experimental data. Knowledge of multi-physics simulation and battery safety analysis is highly desirable. Personal success factors Strong technical leadership, problem-solving, and analytical skills. Ability to work independently and drive complex projects in a dynamic environment. Excellent communication and collaboration skills across teams and customers. Results-driven mindset with a focus on engineering quality and delivery Preferred Experience Experience with prismatic lithium-ion batteries and advanced chemistries (NMC, NMX, Li-S). Knowledge of battery safety, thermal, mechanical, and venting behavior. Experience in multi-physics simulation, digital twin, or cell-to-pack modeling. Experience delivering simulation models for customer applications or BMS development.