Senior System Administrator (Linux, Networking & Automation) (m/f/d)

T‑Systems is part of the Deutsche Telekom Group, with around 30.000 employees worldwide. We create technology with purpose to generate a positive impact on society. We are looking for curious talent, eager to learn, take on challenges, and contribute ideas that transform our customers’ experience. We trust people: we offer autonomy, continuous support, and a collaborative environment where you can grow without limits. We are one global team, guided by respect, integrity, and a passion for doing better every day. As a System Administrator , you bring deep knowledge of Linux and modern cloud technologies. You will play a key role in operating, maintaining, and continuously enhancing our T-Cloud Public platform, always with a strong customer‑oriented mindset. Responsibilities and Duties: Solve complex problems in the daily operation of a hyper-scaler's cloud backend. Install and configure software and hardware. Manage network devices. Monitor performance and maintain systems according to requirements. Troubleshoot issues. Ensure security through access controls, backups and firewalls. Consistently automate with common automation frameworks. Work in a team of specialists where everyone helps each other in an open and trusting manner. Must-have requirements: Completed studies in a technical, engineering, or scientific field, or equivalent professional training. 5–7 years of professional IT experience with a focus on modern cloud technologies. Strong hands‑on experience with Linux , Bash , and network‑related services. Excellent knowledge of physical and virtual networks, routing, and firewalls . Extensive experience in infrastructure automation . High customer orientation and problem‑solving mindset. Knowledge of agile development processes is considered a plus. Fluency in written and spoken English . What do we offer you? Work environment & flexibility International, dynamic and collaborative environment T-Social: social initiatives (sports, community, health, ...) Hybrid work model (remote/on-site) Flexible working hours Growth & development Customized training: access to Coursera to learn whatever you want, whenever you want Weekly language classes (English, Spanish & German) International Mentoring Sessions & Experience Days Compensation & benefits Flexible compensation plan (health insurance, meal vouchers, childcare, transport) Telemedicine Life and accident insurance Social fund Wellbeing & time off 26+ working days of vacation per year Free access to specialist services (medical, legal, wellness) 100% salary coverage during medical leave And many more advantages of being part of T-Systems! If you are looking for a new challenge, do not hesitate to send us your CV! Please send CV in English. Join our team! T-Systems Iberia will only process the CVs of candidates who meet the requirements specified for each offer.