At Kepler Communications, we're not just imagining the future of on-demand space connectivity - we're leading it Our mission is to provide real-time on-orbit connectivity for critical missions, enabling a new era of data-driven intelligence and innovation. With

33 satellites launched to date,

Kepler operates the first commercial optical data relay constellation, enabling real-time, continuous space communications while supporting advanced on-orbit compute and hosted payload capabilities. What sets Kepler apart is our team:

bold thinkers, skilled builders, and passionate problem-solvers who thrive on pushing the boundaries ofwhat’spossible in space. We believe outstanding ideas come from diverse perspectives, andwe’recommitted to creating an environment where you can grow, lead, and make a global impact. Ifyou’reready 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 Great Place to Work®, seven years in a row As a

Senior Infrastructure Security Specialist , you will play a key role in protecting Kepler's corporate, cloud,



and operational infrastructure. Reporting to the VP, Information Security & CISO, you will be responsible for owning, operating, and continuously improving core infrastructure security capabilities, including vulnerability management, security monitoring and SIEM, endpoint security, infrastructure hardening, and incident response. You will work closely with IT, Engineering, Operations, and other business teams to identify security risks, implement practical security controls, and ensure Kepler's infrastructure remains secure and resilient as the organization continues to scale. The role will also support security requirements associated with regulated and Government of Canada environments, including environments that may process Protected and Classified information. This role is based in Toronto and follows a hybrid work model, with approximately 40% of time spent on-site. Key Responsibilities:

Infrastructure Security

Provide security engineering expertise for existing and new infrastructure, cloud environments, networks, systems, and related technologies. Review infrastructure and solution architectures to identify security risks and recommend practical security controls and risk mitigation measures. Assess and improve security controls across networks, servers, operating systems, cloud infrastructure, databases, firewalls, identity systems, and other infrastructure technologies. Develop,



maintain, and continuously improve secure configuration and system-hardening standards based on recognized security frameworks and industry best practices, including CIS Benchmarks and NIST guidance; assess systems against established baselines and work with system owners to remediate identified configuration gaps. Work closely with IT and Engineering teams to integrate security requirements into infrastructure design, implementation, and operational processes. Support the design, implementation, and improvement of infrastructure security controls, including firewalls, network segmentation, secure remote access, and other network security technologies. Vulnerability & Configuration Management

Own, operate, and continuously improve Kepler's infrastructure vulnerability management capability. Manage vulnerability scanning across infrastructure environments, including authenticated scanning and validation of scanning coverage. Review and analyze vulnerability findings and apply risk-based prioritization to support effective remediation. Coordinate remediation activities with IT, Engineering, Operations, and system owners, and track vulnerabilities through remediation or approved risk acceptance. Assess infrastructure against established secure configuration baselines and identify configuration deviations requiring remediation. Develop and report metrics related to vulnerability exposure, remediation performance, scanning coverage, exceptions, and overall vulnerability management effectiveness. Administer, maintain, and optimize enterprise vulnerability management technologies such as Tenable or equivalent platforms. Security Monitoring, SIEM & MDR

Own and continuously improve

📌 Senior Infrastructure Security Specialist (Toronto)
🏢 Kepler Communications
📍 Toronto