Lyten is leading an industrial revolution through Lyten 3D Graphene™, a breakthrough supermaterial unlocking a new generation of products — from lithium–sulfur batteries and energy storage systems to concrete admixtures, lightweight composites, and next-generation sensors that are revolutionizing industries. Together, these innovations are making a massive global improvement and driving real-world impact across energy, mobility, construction, and defense. At Lyten, we believe the most meaningful careers begin with purpose — and with people who want to make a difference. We’re not just developing advanced supermaterials — we’re about to change the world as we know it, reshaping how energy is stored, how products are built, and how progress is made. We’re entering an exciting growth phase, scaling production across the U.S. and Europe and expanding our team of engineers, scientists, and innovators. Apply now to join our team and be part of something bigger than yourself — where collaboration, creativity, and purpose come together to build the technologies that will define the next century. We are looking for a Manufacturing Test Engineer to join the core team responsible for launching a new production line. After the start-up phase, you will take full ownership of assigned electrical test stations and processes, ensuring their reliability, performance, and continuous improvement. Your role At the beginning, you will be part of the team responsible for developing and commissioning electrical test systems for a new production line. Once the line is operational, you will take the role of test process owner, responsible for the stability, capability, and performance of assigned electrical test equipment and processes — with a strong focus on OEE and production sustainability. Your responsibilities Define and develop electrical test equipment and process requirement specifications Play a key role in production line launch and ramp-up, achieving targeted MSA and process capabilities Lead equipment fine-tuning, debugging, and test adjustments during commissioning and ramp-up phases Review Design Failure Mode and Effect Analysis and identify manufacturing risks Translate product electrical requirements into robust manufacturing test processes Design and implement new testing technologies to improve performance and reduce equipment consumable usage Support production ramp-up by ensuring machine capability, process capability, and measurement system analysis (MSA) Define process validation guidelines and lead commissioning activities during FAT and SAT Own and drive development of Process Failure Mode and Effect Analysis Create and maintain Standard Operating Procedures, Work Instructions, defect descriptions, and reaction matrices Characterize electrical tests, define critical parameters, and establish monitoring using SPC Execute Design of Experiments to optimize test conditions and improve production KPIs Train test and maintenance technicians Ensure and promote 5S standards within the production environment Support capital improvement projects related to test equipment and production performance What we are looking for Degree in Electrical, Electronics, or Mechatronics Engineering (or similar field) 4+ years of experience in electrical or battery testing within a manufacturing environment Experience with high-voltage testing and understanding of Li-Ion battery protection fundamentals Proven experience developing and implementing electrical test processes in production Experience writing technical documentation, including: requirement specifications functional designs test cases and test records validation protocols Strong analytical skills and the ability to troubleshoot complex hardware and software systems Passion for solving complex technical problems in simple and innovative ways Quality- and customer-oriented mindset Experience working in multicultural environments within industries such as battery, electronics, semiconductor, or automotive Technical skills Knowledge of Lean Manufacturing, Six Sigma, and 5S Problem solving using 8D methodology and Ishikawa diagrams Strong experience with NI LabVIEW and/or NI TestStand and/or MATLAB Programming knowledge in Python, C, C++, C#, or SQL Understanding of communication protocols such as CAN, Ethernet, RS-232 Familiarity with test scripting languages and automated test stations (e.g., Keysight BTI, Teradyne) What will make you successful in this role You are the kind of engineer who enjoys working where hardware, software, and manufacturing meet. You can move seamlessly between test architecture design, debugging electronics, analyzing data, and improving production performance. And you believe that the best test system is the one that not only detects problems — but helps prevent them. Factory is located at Gdańsk, Stogi. Min. salary for this position starts at 10 000 PLN gross. Why Work at Lyten At Lyten, you’ll be part of a team that’s redefining what’s possible in energy, materials, and manufacturing. We’re not just imagining the future — we’re building it today with breakthrough technologies that are changing how products are made and how industries innovate. Our people are the heart of that mission. From world-class scientists and engineers to creative problem-solvers in operations, manufacturing, and commercialization, every member of the Lyten team plays a role in turning bold ideas into real-world impact. We believe that the best work happens when you’re doing great things in the world — with people you like. Collaboration, curiosity, and a shared sense of purpose drive everything we do. What You’ll Find at Lyten A mission that matters: Contribute directly to solving complex challenges in energy, mobility, and materials innovation. Cutting-edge innovation: Work on technologies at the intersection of materials science, energy storage, and advanced manufacturing that strengthen energy security and local supply chains. Extraordinary people: Join a team of talented, friendly, and down-to-earth innovators who support, challenge, and inspire one another every day. Teamwork and culture: Experience a workplace built on trust, respect, and shared success — where collaboration fuels breakthroughs and everyone’s ideas are heard. Global impact: Help scale new materials and energy solutions that reinforce industrial resilience across the U.S. and Europe. Career growth: Be part of a fast-moving company entering a commercial growth phase, with opportunities to lead, learn, and make your mark. Purpose-driven values: Thrive in an environment that celebrates ingenuity, optimism, and meaningful progress — together. Lyten offers the opportunity to do the most important work of your career — helping build the technologies that will power the next century of innovation. Join us, and help transform industries, communities, and the planet with friends who share your drive to make a difference. Founded in 2015 in Silicon Valley, California, Lyten is transforming the future of energy and materials innovation to build a stronger, more resilient world. Our breakthrough innovation, Lyten 3D Graphene™, is a brand-new supermaterial that enables the creation of products that perform better and cost less. Lyten is rapidly scaling operations across the U.S. and Europe. Our lithium–sulfur (Li-S) batteries—free from nickel, manganese, cobalt, and graphite—deliver higher energy density and lighter weight while enabling a more secure, independent supply chain and a next-generation alternative to traditional lithium-ion chemistry. The acquisition of Northvolt’s assets in California, Poland, Sweden, and Germany has established a strong foundation for Lyten’s global energy storage growth, including Europe’s largest Battery Energy Storage System (BESS) manufacturing facility. Beyond battery systems, Lyten’s platform technology extends to high-performance concrete admixtures, advanced composites, adhesives, and sensors, redefining material performance across industries from automotive and aerospace to construction and defense. Lyten has raised over $625 million in equity and received support from the U.S. Export-Import Bank to provide up to $650 million in financing for international customer energy storage projects. Recognized as one of Fast Company’s “Most Innovative Energy Companies,” one of TIME’s “Top Green Technology Companies,” and a Silicon Valley Defense Group Top 100 National Security Company, Lyten is leading the next wave of high-performance materials and energy systems that enhance energy security and supply chain resilience. Our lithium–sulfur batteries have been selected to power Chrysler’s Halcyon Concept EV. Behind every Lyten innovation is a world-class team of scientists, engineers, and business leaders from some of the most respected technology, energy, and manufacturing companies — all united by a shared mission to make a lasting global impact. We’re entering an exciting growth phase — expanding production, launching new products, and hiring exceptional talent across engineering, operations, manufacturing, and commercialization. If you’re ready to shape the next era of advanced materials and product innovation — while working alongside some of the brightest minds in science and engineering — join Lyten and help us build the next industrial revolution.

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