Thermal Designer

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.  Industry-leading 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 Great Place to Work®, five years in a row! We are seeking a Thermal Designer to lead the thermal development and verification of spacecraft subsystems.  This role combines thermal architecture, thermal analysis, hardware development, testing, and cross-functional collaboration to ensure spacecraft systems operate reliably throughout all mission phases and environmental conditions. The successful candidate will own thermal performance from concept through qualification, working closely with systems, RF, electrical, software, mechanical, manufacturing, AIT, and mission operations teams to develop robust and scalable solutions.  The ideal candidate thrives in environments where thermal performance, mass, reliability, manufacturability, schedule, and cost must all be balanced to achieve mission success. They are equally comfortable developing thermal models, designing thermal control solutions, interpreting test data, and solving complex multidisciplinary challenges.  This role is an opportunity to directly influence the next generation of Kepler spacecraft while helping establish the engineering practices, technical rigor, and thermal engineering capability that will enable Kepler to become a world leader in spacecraft development and space infrastructure.