Senior Network Administrator

Kepler Communications

  • Toronto, ON
  • Permanent
  • Full-time
  • 9 days ago
At , we're not just imagining the future of connectivity - we're leading it!Our mission is to provide real-time Internet access in space, enabling a new era of data-driven exploration and innovation. With 23 satellites already launched and a next-generation optical network on the way, we're creating the infrastructure that will power the space economy for decades to come.Technology is only part of the story. What sets Kepler apart is our team: bold thinkers, skilled builders, and passionate problem-solvers who thrive on pushing the boundaries of what's possible in space. We believe great ideas come from diverse perspectives, and we're committed to creating an environment where you can grow, lead, and make a global impact.If you're ready to reach higher, move faster, and do work that shapes the future space economy - this is your launchpad. Come build the future with Kepler!What We Offer:- Competitive compensation with a robust equity plan to share in our success.- Comprehensive coverage for health, dental, and vision insurance-including dependents.- Unlimited vacation, supportive parental leave policy, and company-wide holiday shutdown.- Semi-annual company-wide parties and frequent in-office team events.- Relocation packages available for approved roles.- $1,500 annual professional development fund to support your growth.- Fully stocked Toronto office kitchen with snacks, drinks, games and top-notch kitchen appliances.- Town Halls, Celebration Calls, and Company-wide events to stay connected and engaged.- We're a certified ®, four years in a row!Kepler is seeking a Senior Network Administrator to join our Information Technology team. In this role, you will design, operate, and secure our enterprise and cloud networks, ensuring performance, scalability, and reliability for mission-critical systems. You will drive modernization and automation initiatives, work closely with network architects, and collaborate with internal teams and external providers to deliver a resilient, future-ready network.Key Responsibilities:
  • This is a hybrid role and has a minimum requirement of 2+ days in the Toronto office per week.
Network Design & Operations * Design, implement, and maintain secure and scalable enterprise and cloud networking infrastructure
  • Configure and manage routing, switching, firewalls, VPNs, load balancers, and transport networks.
  • Administer core network services such as DHCP, VLANs, dynamic routing protocols, SD-WAN, etc
  • Deploy and manage Arista, Fortinet, and other network devices
  • Support structured cabling systems (fiber, copper) and maintain up-to-date network topology diagrams
  • Work with network vendors and service providers to deliver resilient and high-performance connectivity
Monitoring, Performance & Troubleshooting * Operate and improve the network monitoring stack to alert on faults, performance, capacity, and security issues
  • Proactively monitor and optimize network health, capacity, and throughput
  • Lead root cause analysis and resolution of complex incidents
  • Utilize advanced diagnostic tools and network management platforms (e.g., Wireshark, tcpdump, NetDisco, Eve-NG, Netbox) to investigate and resolve issues
Security & Compliance * Implement and enforce network security policies, segmentation, and access controls
  • Configure and support encryption and tunneling protocols (WireGuard/Tailscale, IPsec, SSL VPNs)
  • Collaborate with security teams on vulnerability management, audits, and incident response
  • Ensure alignment with ITIL-based practices for Change, Incident, and Problem Management
Automation & Infrastructure as Code * Manage networks programmatically, avoiding manual CLI-driven changes
  • Automate network provisioning and configuration with Ansible, Python, Bash, or similar tools
  • Use Infrastructure as Code (IaC) to deploy and manage repeatable, scalable network infrastructure
  • Integrate networking workflows with CI/CD pipelines (e.g. GitLab CI) to validate and test configurations
  • Contribute to the adoption of software-defined networking (SDN) technologies such as Arista CloudVision
Collaboration & Documentation * Partner with network architects to scale and evolve the terrestrial and cloud network that connects ground stations, user segments, and the core
  • Work cross-functionally with Networking, engineering, and operations to deliver resilient solutions
  • Maintain comprehensive network documentation, diagrams, and runbooks
  • Mentor junior staff and share knowledge across the team
  • Coordinate with vendors, contractors, and facilities during deployments and upgrades
Required Skills & Qualifications:
  • Bachelor's degree in Computer Science, Information Technology, Engineering, or equivalent practical experience
  • 5+ years of hands-on experience supporting mission-critical networks
  • Deep protocol knowledge of TCP/IP, routing (BGP, OSPF), IPv4/IPv6, VLANs, spanning-tree
  • Proven experience with enterprise-grade networking devices (e.g., Cisco, Arista, Aruba, Fortinet, or equivalent)
  • Experience with cloud networking (AWS VPC, Azure, VPNs, Security Groups)
  • Proficiency with diagnostic tools and performance monitoring platforms
  • Strong problem-solving skills, attention to detail, and ability to operate in time-sensitive environments
  • Excellent written and verbal communication skills, including the ability to explain technical concepts to non-technical stakeholders
Bonus Points:
  • Experience with container networking (Docker, Kubernetes)
  • Linux/Unix networking skills (namespaces, VRFs, bridges, iptables, route tables)
  • Familiarity with service provider technologies such as MPLS
  • Knowledge of wireless networking standards (
Wi-Fi, RF analysis, site surveys) * Familiarity with structured cabling best practices (e.g., BICSI standards)
  • Experience with observability tools (Prometheus, Zabbix, Nagios, Grafana)
  • Industry certifications (Cisco, Juniper, AWS, Azure, Arista, Aruba, Fortinet, or equivalent)
Use of AI in RecruitmentAt Kepler Communications, all hiring decisions are made by people. Human recruiters are involved in every step of our recruitment process. We use AI-based tools (such as Lever AI and HireEZ) to assist with the initial review of applications by ranking candidates based on job-relevant criteria. These tools support - but do not replace - human judgment.Employment Equity & Accommodation StatementKepler Communications is an equal opportunity employer committed to building a diverse and inclusive workplace. We welcome applications from all qualified individuals, including women, Indigenous peoples, persons with disabilities, members of visible minorities, and people of all sexual orientations and gender identities.If you require accommodation during any stage of the recruitment process, please contact our People & Culture team at , and we will work with you to meet your needs.

Kepler Communications