Battery Mechanical Design Engineer

Heartaerospace

At Heart Aerospace we develop the ES-30, a regional hybrid-electric airplane with a capacity of 30 passengers, an electric zero-emission range of 200 km and an extended hybrid range of 400 km. Heart is targeting type certification of the ES-30 by the end of the decade. Your mission Heart Aerospace is seeking a highly motivated and experienced Battery Test & Validation Engineer to join our growing and dynamic team. In this role, you will be a key contributor to the development, testing, and optimization of advanced battery cells specifically designed for the demanding requirements of electric aerospace applications. You will leverage your deep understanding of Test & Validation methodologies and approach to drive innovation and ensure the highest levels of performance, safety and reliability. Key responsibilities include but are not limited to: * Lead the development and execution of comprehensive test plans and procedures for battery modules and high voltage battery packs designed for aerospace applications. * Collaborate closely with the design team to define DFMEA, test requirements and ensure testability of new battery technologies and designs. Support the development of battery system qualification and certification plans. * Create and maintain system and sub-system Design Verification Plans and Reports (DVP&R). Draft and release test plans. Host Test Readiness Reviews. * Execute hands on testing for performance, life cycle, environmental, safety, mechanical (shock and vibe), thermal, electrical and homologation testing. * Design, build and integrate test fixtures, data acquisition systems, and control software to conduct accurate and repeatable testing. * Analyze test data, generate detailed reports, and present findings to cross-functional teams and leadership. * Identify failure modes, perform root cause analysis to enhance battery system performance and reliability. * Manage external testing labs and vendors as needed. You'll Bring These Qualifications for Senior Battery Test & Validation Engineer: * 5+ years of experience in battery testing and validation in high-reliability industries. * Understanding of battery electrochemistry, performance characteristics, and safety requirements for lithium-ion batteries. * Direct hands on experience in high voltage battery system testing and validation for lithium-ion batteries. * Experience running battery testing equipment (e.g., cyclers, environmental chambers, safety test equipment) and data acquisition systems. * Proficiency in data acquisition and analysis tools (e.g., LabVIEW, MATLAB). * Strong problem-solving skills and the ability to perform root cause analysis. * Familiarity with high-voltage systems and safety protocols. You'll Bring These Qualifications for Staff Battery Test & Validation Engineer: * 8+ years of experience in battery testing and validation, preferably within the aerospace, automotive, or other high-reliability industries. * Deep understanding of battery electrochemistry, performance characteristics, failure mechanisms, and safety requirements for lithium-ion batteries. * Direct hands on experience in high voltage battery system testing and validation for lithium-ion batteries. * Experience running battery testing equipment (e.g., cyclers, environmental chambers, safety test equipment) and data acquisition systems. * Proficiency in data acquisition and analysis tools (e.g., LabVIEW, MATLAB). * Strong problem-solving skills and the ability to perform root cause analysis. * Highly efficiency with high-voltage systems and safety protocols. These Qualifications Would Be Nice to Have: * Familiarity with aerospace industry standards, regulatory requirements, qualification and certification processes. * Experience with battery modeling and simulation. * Knowledge of battery management systems (BMS) and control algorithms. Education * M.S. or Ph.D. in Chemical Engineering, Materials Science, Electrochemistry, or a related field. Base Pay Range:  $140,000—$216,000 USD

Techrytera AB

About us At Techrytera AB, recruitment starts with you. We are a staffing and recruitment company with deep expertise and a clear focus on IT and Engineering. With our industry knowledge and close dialogue with both candidates and clients, we create precise matches where the right skills meet the right needs. We believe that a truly great match is not just about a job description – it’s about your experience, your potential, and what you genuinely want to develop in. That’s why we always focus on the individual. By understanding your background, motivations, and ambitions, we can connect you with assignments and roles at our clients where you have the right conditions to grow and make an impact. Our goal is to build long-term and meaningful collaborations – for both you as a candidate and for our clients. Job Description We are seeking an experienced Mechanical Design Engineer to join an innovative team working with advanced engineering and concept vehicles. The team operates in early development phases, focusing on future technologies such as electrification, hydrogen, and e-Mining. The role is set in a fast-paced and collaborative environment, working closely with R&D, Production, and other stakeholders. You will contribute to concept development and ensure feasible, high-quality technical design solutions. Key Responsibilities Contribute to early-phase concept development and vehicle design Create 3D models and concept designs in Catia V5 Develop technical solutions within areas such as cooling, braking, steering, and battery systems Collaborate cross-functionally with R&D and Production teams Support vehicle layout and system integration Perform or support FEM analysis for concept validation Deliver concept-level designs within tight timelines Requirements 7+ years of experience in mechanical design Strong experience in concept development and early-phase engineering Proficiency in Catia V5 and PLM systems (e.g., Enovia) Experience with BEV (Battery Electric Vehicle) solutions Knowledge of vehicle integration and layout Experience in FEM analysis is highly meritorious Ability to work in dynamic and changing environments Strong communication and teamwork skills Language: Fluent English required; Swedish is meritorious Application When you apply through Techrytera AB, you’re not just applying for a job – you’re starting a dialogue about your career path. We want to get to know you, your experience, and your ambitions so that we can match you with the right opportunities at our clients. Does this sound interesting? Submit your application or get in touch with us to learn more. We look forward to discovering the next step in your career together with you.

Lyten Labs AB

The Senior Cell Design Engineer will play a project leading role in the cell development of the Li-ion and LIS battery, specifically, in the Mechanical Design area.​  Key Responsibilities Overall areas of responsibilities and activities ​​• Lead mechanical design and development Li-ion and LIS battery and related components for Energy Storage Systems (ESS), Electric Vehicles (EV), and other advanced applications • Take ownership of mechanical part design, evaluation, validation, and optimization using advanced CAD tools (NX, CATIA, or equivalent) • Act as the primary technical interface with customers, leading technical discussions and clarifying design requirements • Proactively collaborate with cross-functional teams (Supply Chain, Process Engineering, R&D Labs, Manufacturing, Quality, etc.) to ensure seamless project execution • Identify technical risks related to cell/battery development and production and drive mitigation strategies • Review and approve mechanical drawings, 3D models, tolerance stack-ups, and technical documentation • Support prototype development, design verification, and validation activities • Contribute to continuous improvement of design standards, processes, and engineering best practices Requirements Educational background and previous experience required for the role Qualifications and Experience ​• BSc, MSc, or PhD in Mechanical Engineering or a related field (or equivalent practical experience) • 8+ years of mechanical design experience, preferably in power electronics, high-performance lithium-ion batteries, or related industries • Strong experience in lithium-ion battery cell development and secondary battery technologies is highly preferred • Proven hands-on experience in mechanical component design, evaluation, and validation • Extensive experience with advanced CAD tools such as NX, CATIA, or equivalent 3D modeling software • Experience with electrode and cell design, electrode preparation processes, cell fabrication, and electrochemical performance evaluation is strongly preferred • Strong understanding of risk management in cell/battery development and production environments • Demonstrated experience leading technical discussions directly with customers • Excellent English written and verbal communication skills Specific skills • Advanced proficiency in CAD tools (NX, CATIA, or similar) for mechanical part design and evaluation • Strong technical documentation and drawing review capability • Ability to work under pressure and manage tight project deadlines • Excellent organizational skills with the ability to manage multiple projects simultaneously • Proactive cross-functional collaboration skills • Ability to work effectively both independently and in team environments • Strong analytical and problem-solving skills