Operation Manager - Ericsson NFVI

Company Description

At T-Systems, you will find groundbreaking projects that contribute to social and ecological well-being. We want to welcome new talents like you, who bring fresh ideas, different points of view, who accept challenges and continuous learning, to grow and impact society… All this, in a fun way!

It doesn't matter when or where you work. It's about doing work that matters to move society forward. For this reason, we will do everything possible to ensure that you have every opportunity to develop by offering you a support network, excellent technology, a new work environment and the freedom to work independently. We support you to constantly grow both personally and professionally, so that you can leave a notable mark on society.

T-Systems is a team of around 28,000 people employed around the world, making us one of the world's leading providers of integrated end-to-end solutions. We develop hybrid cloud and artificial intelligence solutions and drive the digital transformation of companies, industry, the public sector and, ultimately, society as a whole.

Job Description

Project description
T-DAT Germany is required to further develop and operate the dedicated NFVI solution that hosts our Packet Core. This position supports our goal of providing an optimal customer experience and ensuring the high availability, security, and performance of our network functions. You will be responsible for all operational activities and tasks, such as integrating, managing, deploying, monitoring, and troubleshooting the Ericsson

At the Telco Hub in Madrid, we are pioneers in merging IT and Telco, building and scaling Telco as a Platform (TaaP) on our proprietary layered cloud. Our teams operate in cross-country and cross-functional squads, delivering cutting-edge services to Europe's most valued Operator.
Our mission is to create the best customer experience based on three core principles:
✅ Cloud-based – Harnessing the latest technologies for scalability and performance.
✅ Automated – Driving efficiency through AI, automation, and DevOps.
✅ Sustainable – Building a future-ready, environmentally conscious infrastructure.
We are looking for top engineering talent eager to grow technically and professionally in an innovative, dynamic, and collaborative environment. If you are passionate about shaping the future of telecommunications, this is your place!

NFVI solution as a dedicated infrastructure platform for Ericsson's Packet Core VNF, which serves more than 30 million customers.
Tasks
• Responsible for the entire lifecycle operations of Ericsson's NVFI solution hosting virtual ePCs
• Optimize the manufacturer's product for efficient operation, i.e. define improvements, have them developed and test them.
• Operate the solution, i.e. monitor, resolve errors, implement patches and coordinate the implementation of defined tasks within the affected technical teams and the supplier.
• Incident Management, i.e. identify the issue, implement measures to mitigate customer impact, recover system stability, responsible to solve the issue. This also requires willingness for call-on-duty services.
• Problem management, i.e. conducting root cause analyses, requesting supplier support according to the defined SLA and support process, implementing improvement measures, providing statistics for the defined KPIs, reviewing SLA KPI reports.
• Change Management, i.e. plan and prepare, test, request approval and implement changes to the system. This requires willingness to work in maintenance windows during nightshifts, depending on the severity of the change.
• Define and plan deliveries for major release upgrades in terms of required content, deliverables, responsible owners (RACI) and required time and efforts.
• Apply and improve testing, monitoring, and troubleshooting procedures to maintain high performance, reliability, and compliance of integrated network functions. Deliver and maintain documentation for best-practices, method of procedures (MoP), etc. for system operations
• Deliver, review and agree required acceptance test-cases for functional and non-functional use cases. Define, execute and coordinate execution of acceptance testing.
• Collaborate with cross-functional teams to optimize end-to-end connectivity, address network challenges, and continuously improve integration processes for VNF deployments.
• Provide support for complex projects across development, quality assurance, and project planning, as well as assist with the implementation of new mobile core software releases.
• Develop strategies to leverage from automated monitoring and change methods, incl. VNF deployments with VNF-M.
• Define and establish disaster recovery plans to ensure system resilience and quick recovery from backups.
• Collaborate closely with other involved operations teams to streamline processes, enhance software and system performance and apply innovative technologies and concepts.
• Define solutions to apply Security implementation and monitor reports and implement required patches.
• Responsible for Hardware repair&return process, coordinate HW exchange changes with local technical staff and plan, execute required VM migrations.

Qualifications

Must have skills
Mandatory skills:
• Several years of experience in Ericsson NFVI operations with strong focus on Ubuntu LX, Suse LX, compute hardware, datacenter networks (router, switches) and SDN concepts and with experience in onboarding VNF
• Knowledge and experience in the area of Network Function Virtualization (compute, memory, network) and management tools (SDN, Openstack, VNFM)
• Strong knowledge in operating and monitoring compute hardware and Linux LCM (Ubuntu and Suse)
• Skilled in implementing monitoring, logging, and alerting solutions (e.g., Prometheus, Grafana) to ensure network health and optimize the performance and reliability of packet core applications and infrastructure. User level Grafana and Kibana.
• Signalling analysis: User level Anritsu, Netscout, Wireshark
• Knowledge in troubleshooting of IPv4/IPv6 networks and protocols such as TCP, UDP, BGP, BFD and tracing tools (e.g. wireshark)
• Experience with troubleshooting in L2 switching networks, ideally with Arista and Juniper Junos knowledge
• Workflow Management and Trouble Ticketing Tool: User level HP Service Manager (HPSM, internal Name Common Assurance Service Manager (CASM))
• Familiar with ETSI-MANO architecture, VNF-M procedures, Openstack and Kubernetes
• Good understanding in the 4G enhanced Packet Core and 5G non-standalone Core technologies (4G ePC and 5G NSA), their components, interfaces and protocols
• Experience in documenting multifaceted technical requirements for colleagues
• Experience in classic and agile forms of cooperation

No shift work, but night shifts must be covered by the team 1-2 times per week (between 10:00 PM and 6:00 AM to carry out repairs and changes).
Additionally, participation in on-call duty and call-in procedures is essential (approximately 5-7 weeks per person per year).

Additional Information

What do we offer you?

• International, positive, dynamic and motivated work environment.
• Hybrid work model (teleworking/on-site).
• Flexible schedule.
• Continuous training: Preparation for certifications, access to Coursera, weekly English and German classes...
• Flexible compensation plan: health insurance, meal vouchers, childcare, transport assistance...
• Life and accident insurance.
• More than 26 working days of vacation per year.
• Social fund.
• Free service for specialists (doctors, physiotherapists, nutritionists, psychologists, lawyers...)
• 100% of salary in case of sick 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. Join our team!

T-Systems Iberia will only process the CVs of candidates who meet the requirements specified for each offer.