Senior Network & Infrastructure Engineer

We are looking for a skilled and hands-on Senior Network & Infrastructure Engineer to help design, operate, secure, and continuously improve our enterprise IT infrastructure.

This role primarily focuses on enterprise networking, while also involving the administration and reliability of Linux and Windows systems, virtualization platforms, and other core infrastructure services.

Our environment includes Cisco Catalyst switches, Cisco Identity Services Engine (ISE), Fortinet and MikroTik devices, and a combination of Linux and Windows servers.

The ideal candidate is someone who can take ownership of complex technical challenges, design reliable solutions, troubleshoot issues independently, and turn architectural decisions into practical implementations.

We value demonstrated technical expertise, strong problem-solving skills, and ownership more than years of experience or certifications alone.

Key Responsibilities

Network Engineering & Security

• Design, implement, maintain, and improve enterprise network infrastructure, with a focus on reliability, security, scalability, and performance.
• Configure, manage, and troubleshoot Cisco Catalyst switches and enterprise routing and switching environments.
• Work with Cisco ISE and Network Access Control (NAC) technologies to strengthen network security and access management.
• Manage and optimize firewall configurations, VPN connectivity, network segmentation, and security policies across platforms such as Fortinet and MikroTik.
• Design and implement network redundancy, high availability, and resilient connectivity.
• Troubleshoot complex network issues using packet analysis, monitoring tools, logs, and systematic root cause analysis.
• Support enterprise wireless infrastructure, including connectivity, authentication, and performance troubleshooting.
• Evaluate existing network architecture, identify risks and bottlenecks, and recommend improvements.

Systems & Infrastructure Administration

• Administer and troubleshoot Linux and Windows server environments.
• Support core infrastructure services such as Active Directory, DNS, DHCP, and related authentication and directory services.
• Manage and maintain virtualization environments, particularly VMware.
• Contribute to infrastructure backup, recovery, storage, and disaster recovery capabilities.
• Collaborate on system hardening, patch management, monitoring, and infrastructure security improvements.
• Participate in infrastructure deployments, upgrades, migrations, and lifecycle management.

Reliability, Automation & Engineering Practices

• Take technical ownership of complex infrastructure issues and contribute to incident investigation and resolution.
• Plan and execute infrastructure changes with appropriate testing, documentation, and rollback procedures.
• Develop scripts and automation to improve operational efficiency, consistency, and reliability.
• Establish and improve technical documentation, configuration standards, monitoring, and operational procedures.
• Work closely with IT, security, and engineering teams to deliver reliable and secure infrastructure services.
• Evaluate technical solutions and communicate trade-offs involving security, performance, cost, and operational complexity.
• Share knowledge and contribute to improving the team's overall technical capabilities.

What Success Looks Like

Success in this role means:

• A more reliable, secure, and maintainable enterprise network.
• Faster diagnosis and resolution of complex infrastructure incidents.
• Reduced recurring problems through root cause analysis and preventive improvements.
• Well-documented, standardized, and increasingly automated infrastructure operations.
• Successful delivery of infrastructure upgrades and architectural improvements with minimal disruption.
• Strong technical ownership and effective collaboration across teams.

We are looking for an engineer who combines deep networking expertise, solid systems knowledge, and a practical ownership mindset—someone who not only understands how infrastructure should be designed but can also build, troubleshoot, and continuously improve it.

Requirements

• Strong hands-on experience in enterprise network engineering, preferably in environments using Cisco technologies.
• Solid understanding of TCP/IP, VLANs, routing, switching, subnetting, and network troubleshooting.
• Practical experience with routing protocols such as OSPF and a good understanding of enterprise network design.
• Experience configuring and troubleshooting Cisco Catalyst switches or comparable enterprise networking equipment.
• Experience with firewalls, VPN technologies, access control policies, and network segmentation.
• Familiarity with Network Access Control (NAC) concepts, including 802.1X, RADIUS, and enterprise network authentication.
• Strong troubleshooting skills, including the ability to analyze packet captures, logs, and network performance metrics.
• Practical experience administering Linux and Windows server environments, with strong proficiency in at least one.
• Working knowledge of core infrastructure services such as Active Directory, DNS, and DHCP.
• Familiarity with virtualization, backup, storage, and infrastructure monitoring concepts.
• Ability to independently investigate complex technical problems, propose solutions, and implement them safely.
• Strong documentation, communication, and cross-team collaboration skills.

Preferred Qualifications

• Hands-on experience with Cisco ISE, including policy configuration, troubleshooting, and NAC implementations.
• Experience with Cisco Catalyst Center and enterprise wireless networking.
• Experience managing Fortinet FortiGate and MikroTik devices.
• Advanced VMware administration, including vCenter, ESXi, clustering, and high availability.
• Experience with enterprise storage platforms, backup solutions, and disaster recovery planning.
• Experience with infrastructure automation using Python, Ansible, PowerShell, Git, or APIs.
• Familiarity with network monitoring and observability tools.
• Familiarity with infrastructure security frameworks and hardening best practices.
• Familiarity with containerization technologies such as Docker or Kubernetes.
• Relevant certifications such as CCNP, CCIE.

Experience & Seniority

We prefer candidates with 5+ years of relevant hands-on experience, including meaningful responsibility for enterprise network infrastructure.

However, we are open to candidates with fewer years of experience who demonstrate exceptional technical depth, strong engineering judgment, and the ability to independently own complex infrastructure challenges.

Benefits

• You'll have a great impact: Your contributions will be pivotal in our mission to serve millions of people.
• You’ll be part of a team that values craftsmanship, speed, and innovation.
• We offer health insurance, and a culture that values learning and autonomy.
• You’ll be surrounded by people who care about doing great work — and enjoy it along the way.