Are you excited to help shape the future of battery technology and consequently the future of consumer electronics and mobility? Do you have the IT prowess to ensure our technical operations run flawlessly and securely? Can you not wait to dive into a VC-backed deep tech scale-up with the ambition to change the world?Then hurry up and join our multi-national team of ambitious, innovative and entrepreneurial colleagues!LeydenJar Technologies is scaling rapidly and while doing so we are looking for a IT System Administrator to join us for 0.8 FTE (32hrs/week) in our mission to boost battery technology.About the jobAs our IT System Administrator, you will be the cornerstone of our IT operations. You will be responsible for maintaining, securing, and optimizing our entire IT infrastructure, from user devices and cloud services to network and server management. This role requires a hands-on approach in a fast-paced, continuously changing organization where urgency is key. We're looking for someone with a proactive attitude, who is eager to take on challenges beyond the core job description, such as helping out with cybersecurity initiatives or supporting IT projects for our new factory. You are the go-to person for IT support, ensuring our team can work efficiently and securely as we scale.In this role you will be responsible for:IT Operations &amp; Infrastructure Management<ul><li>Manage and maintain our on-premise and cloud-based infrastructure, including Azure resources, servers, and storage systems.</li><li>Monitor the health and performance of all IT network devices (switches, routers, firewalls, wireless access points) and troubleshoot connectivity issues.</li><li>Perform regular backups of critical data and test restore procedures to ensure business continuity.</li><li>Apply security patches and updates to all network, server, and hardware in a timely manner.</li><li>Monitor network and server utilization to perform capacity planning and performance tuning.</li></ul>Workspace &amp; User Support<ul><li>Provide first-line IT support to all employees, resolving technical issues efficiently.</li><li>Manage the complete lifecycle of user devices (laptops, mobile phones), including configuration, deployment, and implementing security policies via Mobile Device Management (MDM).</li><li>Administer our Microsoft 365 environment, managing user accounts, access control, and Conditional Access Policies.</li><li>Administer SharePoint, including application and item permissions, to structure and monitor resources.</li><li>Manage the full lifecycle of employee hardware and software, including setup for new employees (onboarding) and decommissioning for departing staff (offboarding).</li></ul>Security &amp; Process Improvement<ul><li>Implement and manage endpoint security configurations, including anti-virus, anti-malware, and anti-encryption.</li><li>Conduct vulnerability scanning and coordinate patching to remediate identified security risks.</li><li>Develop and maintain clear documentation for IT systems, network diagrams, standard operating procedures (SOPs), and user guides.</li><li>Develop and conduct training sessions for new employees on IT systems, security best practices, and company policies.</li><li>Track and manage software licenses to ensure compliance and optimize costs.</li></ul>About you:<ul><li>You have successfully completed an MBO or Bachelor's program in IT or a similar area of study.</li><li>1-2 years of work experience in a System Administrator or similar IT infrastructure role is preferred.</li><li>You have hands-on experience with Microsoft 365 and Azure administration, network management, and endpoint security solutions.</li><li>You are mobile, possess a valid driver's license, and are capable of working at our locations in both Leiden and Eindhoven.</li><li>You are capable of thinking big while doing small, setting future-proof standards that can support our rapid growth.</li><li>Customer Service Orientation – You respond promptly and effectively to user needs, ensuring a positive support experience.</li><li>Teamwork – You collaborate openly with colleagues to solve problems and achieve shared goals.</li><li>Problem Analysis – You identify root causes of technical issues and develop practical, long-term solutions.</li><li>Stress Tolerance – You maintain focus and performance under pressure, especially during system outages or incidents.</li><li>Career and Self Development – You actively seek opportunities to grow technical knowledge and stay current with evolving technologies.</li></ul>Why LeydenJar?<ul><li>Unleash your potential: Dive into a realm where personal growth meets ownership, with the backing to achieve your career aspirations.</li><li>Pension and Insurance Contributions: LeydenJar will pay a total of 10% (on top and based on your monthly gross salary) for pension and life insurance.</li><li>Holiday: Enjoy 25 days of vacation per year (based on a 40-hour working week) to relax and recharge.</li><li>Wellness Day: Take advantage of 1 wellness day per year to focus on your health and well-being.</li><li>Phone allowance: Receive 15,00 EUR monthly to cover your telephone costs.</li><li>Travel Expense Coverage: We will pay your home-work travel expenses (0,23 EUR per kilometer) or provide an NS Business Card for public transport.</li><li>Online Training Platform: Access a platform for online training to enhance your skills and knowledge.</li><li>Study Leave: Enjoy 5 days of study leave per year to pursue continuous learning and development.</li><li>Diverse and Inclusive Team: Join an international team with 25+ different nationalities, fostering a rich and diverse work environment.</li><li>Internal Events: Participate in several FUN events each year, such as end-of-year celebrations, team-building activities, monthly team lunches, and regular drinks, all designed to keep you productive, healthy, and engaged.</li></ul>

LeydenJar Technologies boosts the energy density of li-ion batteries by replacing the traditional graphite anode with a nanoporous, pure silicon anode. This yields cheaper (-20% costs), greener (-85% CO2 footprint) and higher energy density batteries (+70% as compared to state-of-the-art, 1350Wh/L).


IT System Administrator (0.8 FTE)

Are you excited to help shape the future of battery technology and consequently the future of consumer electronics and mobility? Do you have the IT prowess to ensure our technical operations run flawlessly and securely? Can you not wait to dive into a VC-backed deep tech scale-up with the ambition to change the world?Then hurry up and join our multi-national team of ambitious, innovative and entrepreneurial colleagues!LeydenJar Technologies is scaling rapidly and while doing so we are looking for a IT System Administrator to join us for 0.8 FTE (32hrs/week) in our mission to boost battery technology.About the jobAs our IT System Administrator, you will be the cornerstone of our IT operations. You will be responsible for maintaining, securing, and optimizing our entire IT infrastructure, from user devices and cloud services to network and server management. This role requires a hands-on approach in a fast-paced, continuously changing organization where urgency is key. We're looking for someone with a proactive attitude, who is eager to take on challenges beyond the core job description, such as helping out with cybersecurity initiatives or supporting IT projects for our new factory. You are the go-to person for IT support, ensuring our team can work efficiently and securely as we scale.In this role you will be responsible for:IT Operations &amp; Infrastructure Management<ul><li>Manage and maintain our on-premise and cloud-based infrastructure, including Azure resources, servers, and storage systems.</li><li>Monitor the health and performance of all IT network devices (switches, routers, firewalls, wireless access points) and troubleshoot connectivity issues.</li><li>Perform regular backups of critical data and test restore procedures to ensure business continuity.</li><li>Apply security patches and updates to all network, server, and hardware in a timely manner.</li><li>Monitor network and server utilization to perform capacity planning and performance tuning.</li></ul>Workspace &amp; User Support<ul><li>Provide first-line IT support to all employees, resolving technical issues efficiently.</li><li>Manage the complete lifecycle of user devices (laptops, mobile phones), including configuration, deployment, and implementing security policies via Mobile Device Management (MDM).</li><li>Administer our Microsoft 365 environment, managing user accounts, access control, and Conditional Access Policies.</li><li>Administer SharePoint, including application and item permissions, to structure and monitor resources.</li><li>Manage the full lifecycle of employee hardware and software, including setup for new employees (onboarding) and decommissioning for departing staff (offboarding).</li></ul>Security &amp; Process Improvement<ul><li>Implement and manage endpoint security configurations, including anti-virus, anti-malware, and anti-encryption.</li><li>Conduct vulnerability scanning and coordinate patching to remediate identified security risks.</li><li>Develop and maintain clear documentation for IT systems, network diagrams, standard operating procedures (SOPs), and user guides.</li><li>Develop and conduct training sessions for new employees on IT systems, security best practices, and company policies.</li><li>Track and manage software licenses to ensure compliance and optimize costs.</li></ul>About you:<ul><li>You have successfully completed an MBO or Bachelor's program in IT or a similar area of study.</li><li>1-2 years of work experience in a System Administrator or similar IT infrastructure role is preferred.</li><li>You have hands-on experience with Microsoft 365 and Azure administration, network management, and endpoint security solutions.</li><li>You are mobile, possess a valid driver's license, and are capable of working at our locations in both Leiden and Eindhoven.</li><li>You are capable of thinking big while doing small, setting future-proof standards that can support our rapid growth.</li><li>Customer Service Orientation – You respond promptly and effectively to user needs, ensuring a positive support experience.</li><li>Teamwork – You collaborate openly with colleagues to solve problems and achieve shared goals.</li><li>Problem Analysis – You identify root causes of technical issues and develop practical, long-term solutions.</li><li>Stress Tolerance – You maintain focus and performance under pressure, especially during system outages or incidents.</li><li>Career and Self Development – You actively seek opportunities to grow technical knowledge and stay current with evolving technologies.</li></ul>Why LeydenJar?<ul><li>Unleash your potential: Dive into a realm where personal growth meets ownership, with the backing to achieve your career aspirations.</li><li>Pension and Insurance Contributions: LeydenJar will pay a total of 10% (on top and based on your monthly gross salary) for pension and life insurance.</li><li>Holiday: Enjoy 25 days of vacation per year (based on a 40-hour working week) to relax and recharge.</li><li>Wellness Day: Take advantage of 1 wellness day per year to focus on your health and well-being.</li><li>Phone allowance: Receive 15,00 EUR monthly to cover your telephone costs.</li><li>Travel Expense Coverage: We will pay your home-work travel expenses (0,23 EUR per kilometer) or provide an NS Business Card for public transport.</li><li>Online Training Platform: Access a platform for online training to enhance your skills and knowledge.</li><li>Study Leave: Enjoy 5 days of study leave per year to pursue continuous learning and development.</li><li>Diverse and Inclusive Team: Join an international team with 25+ different nationalities, fostering a rich and diverse work environment.</li><li>Internal Events: Participate in several FUN events each year, such as end-of-year celebrations, team-building activities, monthly team lunches, and regular drinks, all designed to keep you productive, healthy, and engaged.</li></ul>

IT System Administrator (0.8 FTE)

About the Job

About the Company

LeydenJar Technologies

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