Senior Network Engineer (Cisco)

Choosing Capgemini means choosing a company where you will be empowered to shape your career in the way you’d like, where you’ll be supported and inspired by a collaborative community of colleagues around the world, and where you’ll be able to reimagine what’s possible. Join us and help the world’s leading organizations unlock the value of technology and build a more sustainable, more inclusive world.

Your role

As a Senior Network Engineer, you will be responsible for designing, implementing, maintaining, and supporting our enterprise network infrastructure. You will work with advanced switching and wireless technologies - primarily Cisco and Arista - to ensure secure, reliable, and high‑performance connectivity across the organization. In this role, you will take ownership of complex technical issues, collaborate with cross‑functional teams, and support a 24/7 operational environment.

Your tasks

• Install, configure, and support network equipment including routers, switches, WAN accelerators, DNS/DHCP, firewalls, and wireless solutions.

• Implement and troubleshoot Cisco NAC solutions such as Cisco ISE (Authentication, Profiling, Posturing).

• Manage and maintain various network and security platforms including:

  • Cisco ASA, Checkpoint, Fortigate NGFW

  • Cisco Nexus, Cisco ISR, Cisco Catalyst 4500/6500

  • Juniper, Arista, Aruba

• Configure and troubleshoot routing protocols: BGP, OSPF, EIGRP, PBR, route filtering, redistribution, summarization, prefix‑lists, and static routing.

• Work with switching technologies: VPC, MLAG, VLANs, trunking, VTP, STP, MST, EtherChannels.

• Perform advanced network & security troubleshooting including packet capture and analysis.

• Support and enhance SDWAN and DNAC environments; contribute to automation initiatives using Python and Ansible.

• Take ownership of customer issues, ensuring timely resolution and clear communication.

• Participate in a 24x7x365 support model, including rotational shifts and on‑call responsibilities.

Your profile

• Strong expertise in Switching and Wireless technologies, preferably with Cisco and Arista.

• Solid hands‑on experience with enterprise routers, switches, firewalls, and wireless systems.

• Proven experience with Cisco ISE and network access control.

• Deep understanding of routing and switching protocols and architectures.

• Strong analytical and troubleshooting skills including packet-level diagnostics.

• Knowledge of SDWAN, Cisco DNAC, Python, and Ansible is a strong plus.

• Excellent communication and interpersonal skills, with customer‑focused mindset.

• Ability and willingness to work in a 24/7 operational environment.

• Preferred certifications: CCNA, CCNP (or equivalent practical experience).

What You'll love about working here

• Practical benefits: yearly financial bonus, private medical care with Medicover with additional packages (e.g., dental, senior care, oncology) available on preferential terms, life insurance and access to NAIS benefit platform.

• Access to over 70 training tracks with certification opportunities (e.g., GenAI, Excel, Business Analysis, Project Management) on our NEXT platform. Dive into a world of knowledge with free access to Education First languages platform, TED Talks and Udemy Business materials and trainings.

• Cutting-Edge Technology: Position yourself at the forefront of IT innovation, working with the latest technologies and platforms. Capgemini partners with top global enterprises, including 145 Fortune 500 companies.

• Enjoy hybrid working model that fits your life - after completing onboarding, connect work from a modern office with ergonomic work from home, thanks to home office package (including laptop, monitor, and chair). Ask your recruiter about the details.

Get to know us

Capgemini is committed to diversity and inclusion, ensuring fairness in all employment practices. We evaluate individuals based on qualifications and performance, not personal characteristics, striving to create a workplace where everyone can succeed and feel valued.

Do you want to get to know us better? Check our Instagram — @capgeminipl or visit our Facebook profile — Capgemini Polska. You can also find us on YouTube. 

About Capgemini

Capgemini is an AI-powered global business and technology transformation partner, delivering tangible business value. We imagine the future of organizations and make it real with AI, technology and people. With our strong heritage of nearly 60 years, we are a responsible and diverse group of over 420,000 team members in more than 50 countries. We deliver end-to-end services and solutions with our deep industry expertise and strong partner ecosystem, leveraging our capabilities across strategy, technology, design, engineering and business operations. The Group reported 2025 global revenues of €22.5 billion.