System Engineer (m/f/d) DNS & IoT

Deutsche Telekom AG; Madrid; Presencial; EUR 60.000 - 90.000; Jornada completa

Descripción de la vacante

T-Systems Iberia in Madrid is seeking a System Engineer to join the DNS Squad, owning end-to-end DNS platforms for mobile, fixed, and IoT networks.

You will implement and operate a Kubernetes-based IoT resolving platform, analyze and troubleshoot issues, and collaborate with the German operations team to enhance software, tools, and system performance.

Flexible working hours and an on-call rotation (~8 weeks per year) provide exposure to real-world operational duties.

Formación

• Fundamental knowledge of DNS including PowerDNS and DoH/DoT/DoQ.
• Extensive Kubernetes experience to orchestrate CNFs.
• Strong IP networking knowledge; routers and LAN/WAN.
• Experience troubleshooting networks with Wireshark.
• Experience with monitoring/analytics tools such as Prometheus and Medusa.

Responsabilidades

• Implement and operate DNS platforms across physical, virtualized, and containerized environments, including a new IoT platform in Kubernetes.
• Analyze, troubleshoot, and document system malfunctions.
• Perform regular checks and refine automated processes including failover, deployment, and DR.
• Develop and optimize scripts using Ansible, Bash, Perl, and Python.
• Collaborate with cross-functional teams and the German operations group to improve tools and performance.

Conocimientos

DNS platforms

Kubernetes orchestration

IP networking

Network troubleshooting (Wireshark)

Monitoring & data analytics (Prom Prom

Herramientas

Kubernetes

Wireshark

Prometheus

Medusa

Ansible

Python

Bash

Perl

Descripción del empleo

# System Engineer (m/f/d) DNS & IoTMadridProfessionalRegularT-Systems Iberiatsi\_iberia## About this job### Your TaskWe are seeking a **System Engineer** to join the DNS Squad, which consists of 12 team members. This role is based in **Madrid** and focuses on the resolving DNS platforms that handle requests for mobile, fixed networks, and IoT. You will hold end-to-end responsibility for these platforms, which are critical core components of the German network, and will work closely with suppliers and DevOps engineers to design, integrate, deploy, monitor, and troubleshoot the resolving DNS platforms throughout their entire lifecycle.#### Responsibilities* **Implement and operate** physical, virtualized, and containerized system environments, with a specific focus on integrating a new IoT resolving platform in Kubernetes.* **Analyze, troubleshoot, and document** system malfunctions.* **Perform regular checks and refinement** of automated processes and strategies, including failover, deployment, and disaster recovery, to ensure a highly available and resilient system with minimum recovery time.* **Identify, document, and structure** new test use cases.* **Develop and optimize scripts** using Ansible, Bash, Perl, and Python.* **Implement changes** in test, reference, and productive systems to enhance system stability or provide new features.* **Develop new methods and tools** for data analysis and monitoring.* **Cooperate with cross-functional teams** to ensure end-to-end system functionality.* **Collaborate closely with the German operations team** to streamline processes, enhance software, tools, and system performance, and apply innovative technologies and concepts.### Your ProfileWe are looking for a **System Engineer** with specialized expertise in DNS platforms, Kubernetes orchestration, and IP networking to support critical telecommunications infrastructure.#### Must Have Skills* Fundamental knowledge of DNS, including PowerDNS, DoH, DoT, and DoQ* Extensive experience working with Kubernetes to orchestrate Cloud Native Network Functions (CNFs)* Proficiency in using and adapting configurations for Kubernetes* Experience with IP networks, routers, and LAN/WAN technologies* Proficiency in troubleshooting networks using tracing tools such as Wireshark* Hands-on experience with monitoring systems and data analytics tools, such as Prometheus and Medusa* Experience working within a Telco company is preferred#### Nice to Have Skills* Very good analytical skills combined with strong quality awareness* Experience in classic and agile forms of cooperation### About Us**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.#### Benefits* **Flexible compensation plan:** health insurance, meal vouchers, childcare, transport* Telemedicine* Life and accident insurance* Social fund* **Vacation:** 26+ working days per year* Free access to specialist services (medical, legal, wellness)* 100% salary coverage during medical leave* T-Social: social initiatives (sports, community, health, ...)#### Application InformationPlease send CV in English.#### Additional Details* **Growth & Development:** + Customized training: access to Coursera + Weekly language classes (English, Spanish & German) + International Mentoring Sessions & Experience Days* **Schedule:** + Flexible working hours + On-call rotation for approximately 8 weeks per year