← All roles

Senior Infrastructure Security Specialist

Kepler· Operations – Security
Apply on company site
Hybrid (Toronto, ON)CA$114k - CA$164kFull-time RegularPosted 1mo ago

About the role

Senior Infrastructure Security Specialist at Kepler Communications focused on protecting corporate, cloud, and operational infrastructure with responsibilities spanning vulnerability management, security monitoring, endpoint protection, system hardening, and incident response in a hybrid Toronto-based role.

Responsibilities

  • Provide security expertise for infrastructure, cloud environments, networks, systems, databases, and identity technologies
  • Review architectures and infrastructure changes to identify risks and recommend practical controls
  • Develop secure configuration and hardening standards based on CIS Benchmarks, NIST guidance, and industry best practices
  • Support network security controls, including firewalls, segmentation, secure remote access, and intrusion detection and prevention
  • Partner with IT and Engineering to incorporate security into infrastructure design and operations
  • Own Kepler’s infrastructure vulnerability management program
  • Manage authenticated scanning, validate coverage, assess findings, and prioritize remediation based on risk
  • Coordinate remediation with system owners and track vulnerabilities through resolution or approved risk acceptance
  • Measure vulnerability exposure, remediation performance, scanning coverage, and exceptions
  • Administer platforms such as Tenable or equivalent technologies
  • Own and improve Kepler’s SIEM, security monitoring, and EDR/XDR capabilities
  • Integrate log sources and develop detection use cases across infrastructure, cloud, applications, identity, and security tools
  • Monitor logging coverage, platform health, and detection effectiveness
  • Investigate security alerts and support containment, remediation, and recovery
  • Coordinate investigations and service improvements with Kepler’s MDR/SOC provider
  • Administer platforms such as Securonix, SentinelOne, or comparable technologies
  • Support incident investigations involving infrastructure, endpoints, networks, identity, and cloud environments
  • Analyze security telemetry, collect evidence, and coordinate containment and recovery
  • Assess and improve security controls within AWS and/or Microsoft Azure
  • Identify opportunities to automate monitoring, vulnerability management, and security operations using scripts, APIs, and security tools
  • Implement technical controls for Government of Canada and other regulated environments
  • Support audits, security assessments, inspections, certifications, and remediation activities
  • Maintain documentation and evidence demonstrating that required security controls are operating effectively

Qualifications

  • Seven or more years of cybersecurity experience in infrastructure security, security engineering, or security operations
  • Strong knowledge of Windows, Linux, networking, cloud platforms, and enterprise IT security
  • Strong hands-on experience administering and operating vulnerability management, SIEM/security monitoring, and EDR/XDR technologies
  • Experience investigating and responding to cybersecurity incidents
  • Knowledge of network security, infrastructure hardening, identity and access management, privileged access, and least-privilege principles
  • Experience securing AWS and/or Microsoft Azure environments
  • Familiarity with NIST CSF, NIST SP 800-171, NIST SP 800-53, and CIS Controls and Benchmarks
  • Ability to communicate technical risks and recommendations to technical and non-technical stakeholders
  • Strong ownership, problem-solving, organization, and cross-functional collaboration skills
  • Ability to obtain and maintain an appropriate Government of Canada security clearance
  • Demonstrates a willingness to adopt and effectively utilize AI-assisted engineering tools, applying sound judgment to improve productivity, quality, and innovation while continuously adapting to evolving technologies

Skills

Required:Infrastructure securityVulnerability managementSecurity monitoring / SIEM / EDR/XDRIncident responseCloud security (AWS/Azure)
Nice to have:Regulated/government security

Benefits

  • 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 Great Place to Work, seven years in a row
Last updated Oct 22, 2026. Interested? Apply on the company site.

About Kepler

Connecting Space. Empowering Earth.

Powered by advanced optical technology, the Kepler Network provides real-time data relay, on-orbit compute, and hosted payload services to form the modern backbone of a connected space ecosystem. These capabilities support defense and intelligence missions, accelerate earth observation insights, and enable scientific, commercial, and humanitarian applications that benefit people and the planet.

space technologycommunicationsearth observationdefensesciencecommercial
Company profileWebsite

More open roles at Kepler