Senior Engineer

The Senior Engineer of Material Development will lead the evaluation, analysis, and optimization of Li battery cells and related materials. This role involves providing technical leadership, guiding junior engineers, and ensuring the successful execution of evaluation activities that support both R&D and commercial cell development. The position requires a deep understanding of material behaviour, electrochemical performance, and cell integration to drive continuous improvement in product performance and reliability. Key Responsibilities Overall areas of responsibilities and activities Key responsibilities include (but are not limited to) Lead and oversee material and cell-level evaluation activities, including electrochemical performance testing, material characterization, and failure analysis. Develop and refine evaluation methodologies, standard test protocols, and data analysis frameworks to ensure consistency and technical rigor. Interpret complex analytical and electrochemical data to identify key performance drivers and recommend technical improvements. Provide technical guidance and mentorship to junior engineers and assist in the prioritization and execution of project tasks. Collaborate closely with cross-functional teams—cell design, process engineering, and quality assurance—to align evaluation results with design and manufacturing objectives. Manage multiple evaluation tasks or projects, ensuring timely delivery of high-quality results and documentation. Contribute to long-term strategy and roadmap development by identifying material or process-related risks and opportunities for improvement. Communicate findings effectively to management and R&D stakeholders through reports, reviews, and technical presentations. Stay updated on advancements in Li battery technology, materials science, and analytical techniques, and apply relevant insights to ongoing projects. Requirements Educational background and previous experience required for the role Qualifications and Experience BSc or higher degrees in Chemical/Material/Electrical Engineering, and Chemistry. Extensive experience in Li battery evaluation, materials analysis, or related R&D areas. Preferably 5+ years industrial experience. Proven expertise in electrochemical analysis, material characterization, and data-driven problem solving. Strong leadership, mentoring, and communication skills with the ability to coordinate multi-functional teams. Capable of translating analytical findings into actionable engineering insights and project recommendations. High level of self-direction, accountability, and technical judgment in complex problem-solving scenarios. Specific skills Advanced analytical capability in using EIS, GITT, GCPL, and high-precision cycling methods. Experience with material analysis tools (SEM/EDS, XPS, ICP, TGA/DSC). Ability to design experiments and establish evaluation protocols. Strong statistical and data interpretation skills for performance trend analysis. Skilled in using data visualization and statistical analysis software. Personal success factors Strong ownership of tasks and ability to work independently. Proactive approach to identifying and solving technical issues. Clear and persuasive communication across functions. Commitment to mentoring and sharing technical knowledge. Balanced focus on both immediate problem-solving and process improvement.

About AOTO AOTO is a Swedish fintech company building a digital operating system for car dealers, combining inventory financing, automated bookkeeping and digital services like leasing, warranties and insurance in one platform. The goal is simple: help car dealers make faster, smarter decisions and maximise their buy and sell potential. We're in an exciting early stage as part of the 0TO9 ecosystem, building the product from scratch with clear ambitions to expand across Europe. This role is central to getting us there. The Role We're looking for a Senior Engineer who thinks beyond code. You'll shape architecture, own technical decisions and build infrastructure that scales. You're curious, pragmatic and you know that the right technology isn't always the one that looks best on a CV. What we work with: Python and SQL/Postgres. HTMX AWS core services. Who you are Senior backend developer with experience from SaaS or high-growth companies. You're comfortable in startup environments, fast pace, broad ownership and constant change don't scare you. You think about the product, not just code, and take responsibility beyond your own tasks. You prefer simplicity and technology that works over flashy technology that impresses. You actively use AI tools in your daily workflow (Cursor, Claude Code, Copilot or similar), this isn't a nice to have, it's a must. Why AOTO? Join early and help shape a product that's being built from the ground up Your decisions actually matter, no layers, no bureaucracy Work closely with CEO Marc Blomberg and CTO Henrik Lagercratz Grow with the company as we expand into new European markets Find out more at aoto.se, we'd love to hear from you!