• Design, implement, and manage network infrastructure with a primary focus on LAN/WLAN using Cisco Catalyst and Meraki solutions • Manage and maintain network security, including Palo Alto firewalls and IPsec VPNs • Administer and optimize cloud networking environments within Microsoft Azure • Implement and oversee proactive monitoring solutions • Manage complex routing protocols such as OSPF and BGP

• Design, deploy, and operate large-scale RoCEv2 data center networks supporting AI and ML clusters from thousands to 100,000+ GPUs • Own congestion management and performance tuning across RDMA fabrics, including PFC, ECN, and DCQCN, in production environments • Implement and maintain automation, validation, and observability tooling using Python, Ansible, Terraform, and modern DevOps workflows • Ensure high availability and reliability across multi-tenant environments by leading operational excellence, incident response, and continuous improvement

About Lumen Lumen connects the world. We are igniting business growth by connecting people, data and applications – quickly, securely, and effortlessly. Together, we are building a culture and company from the people up – committed to teamwork, trust and transparency. People power progress. We’re looking for top-tier talent and offer the flexibility you need to thrive and deliver lasting impact. Join us as we digitally connect the world and shape the future. The Role The Network Engineer II plays a pivotal role in enhancing network design, optimizing performance, and elevating customer support. They are actively involved in network performance reviews with management, internal partners, and customers, ensuring continuous improvement. By providing technical mentoring and guidance to less experienced engineers, they foster a collaborative and knowledgeable team environment. The role also requires strong technical writing skills, including the creation of Method of Procedures (MOP) and Statements of Work (SOW), as well as the ability to work with cross-functional resources to define and deliver network-based projects. Network Engineers II closely collaborate with team members to guarantee that customer network services remain fully operational, and they offer technical expertise and troubleshooting support for DWDM systems, as well as assisting with—or taking responsibility for—the design and architecture of various projects and features. Their commitment extends to supporting production issues, deployments, maintenances, and escalations outside of regular work hours. Additionally, they participate in Day 2 Support planning and preparation meetings throughout the network deployment process, ensuring projects are executed efficiently and economically. Strong project management skills are essential, although the role may require occasional direction and guidance for specific tasks. Location This is a work from home position within the U.S. The Main Responsibilities - Configure and maintain network DWDM systems. - Assist and in some cases be responsible for the design and architecture of projects and features. - Continually work towards making improvements in network design, network performance and customer support - Contribute to network performance reviews with management, internal partners and the customer - Provide technical mentoring and guidance to less experienced Engineers. - Technical writing, create Method of Procedures (MOP) and Statement of Work (SOW) - Work with cross-functional resources to define and deliver network-based projects. - Work closely with team members to ensure customer network service is always fully operational - Provide technical expertise and troubleshooting as needed to support production issues. - Be willing to support deployments/maintenances/escalations outside of work hours - Actively participate in all Day 2 Support planning and preparation project meetings through network deployment iteration. - Assure the most feasible, practical and economical means to complete the work are utilized. - Skilled in project management - Requires direction and guidance with few tasks. What We Look For in a Candidate - Fully seasoned with typically 5+ years professional experience with a Bachelor's Degree or equivalent education and experience or 2-3 years with a Master's Degree. - Ability to work all shifts in a 7x24x365 call center including off hours/on call and during holidays. - Prior experience with Ciena. Compensation This information reflects the anticipated base salary range for this position based on current national data. Minimums and maximums may vary based on location. Individual pay is based on skills, experience and other relevant factors. Location Based Pay Ranges $67,703 - $90,270 in these states: AL AR AZ FL GA IA ID IN KS KY LA ME MO MS MT ND NE NM OH OK PA SC SD TN UT VT WI WV WY $71,088 - $94,784 in these states: CO HI MI MN NC NH NV OR RI $74,474 - $99,297 in these states: AK CA CT DC DE IL MA MD NJ NY TX VA WA Lumen offers a comprehensive package featuring a broad range of Health, Life, Voluntary Lifestyle benefits and other perks that enhance your physical, mental, emotional and financial wellbeing. We're able to answer any additional questions you may have about our bonus structure (short-term incentives, long-term incentives and/or sales compensation) as you move through the selection process. Learn more about Lumen's:BenefitsBonus Structure`#LI-Remote #LI-MB1 Requisition #: 341357 Background Screening If you are selected for a position, there will be a background screen, which may include checks for criminal records and/or motor vehicle reports and/or drug screening, depending on the position requirements. For more information on these checks, please refer to the Post Offer section of our FAQ page. Job-related concerns identified during the background screening may disqualify you from the new position or your current role. Background results will be evaluated on a case-by-case basis. Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records. Equal Employment Opportunities We are committed to providing equal employment opportunities to all persons regardless of race, color, ancestry, citizenship, national origin, religion, veteran status, disability, genetic characteristic or information, age, gender, sexual orientation, gender identity, gender expression, marital status, family status, pregnancy, or other legally protected status (collectively, “protected statuses”). We do not tolerate unlawful discrimination in any employment decisions, including recruiting, hiring, compensation, promotion, benefits, discipline, termination, job assignments or training. Disclaimer The job responsibilities described above indicate the general nature and level of work performed by employees within this classification. It is not intended to include a comprehensive inventory of all duties and responsibilities for this job. Job duties and responsibilities are subject to change based on evolving business needs and conditions. In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information. Please be advised that Lumen does not require any form of payment from job applicants during the recruitment process. All legitimate job openings will be posted on our official website or communicated through official company email addresses. If you encounter any job offers that request payment in exchange for employment at Lumen, they are not for employment with us, but may relate to another company with a similar name.

• Du sicherst die Netzwerk- und IT-Umgebungen unserer Kunden im gehobenen Mittelstand und in Konzernen – mit besonderem Fokus auf Arista und Extreme • Du analysierst und bearbeitest komplexe Incidents, Problems und Changes in anspruchsvollen Netzwerk- und Security-Architekturen und entwickelst nachhaltige, performante Lösungen • Du bist technischer Ansprechpartner für unsere Kunden, verstehst ihre Netzwerk- und Security-Anforderungen im Detail und entwickelst maßgeschneiderte Konzepte • Durch eine strukturierte und präzise Dokumentation von Incidents, Changes und Security-Maßnahmen stellst du eine nachhaltig hohe Service- und Sicherheitsqualität sicher