Senior Satellite Systems Designer - Platform Architect

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! As a Senior Systems Engineer, you will be a technical leader contributing across multiple satellite and space-system programs. You will help deliver critical subsystems, system-level work packages, verification campaigns, and technical deliverables that roll up into larger missions. You will draw on experience across multiple lifecycle phases, including requirements definition, architecture development, design, integration, verification, commissioning, and operations. The role requires the ability to quickly integrate into new projects, establish technical clarity, and lead engineering execution in areas where requirements, interfaces, risks, and trade-offs must be actively managed. You will act as a bridge between disciplines, ensuring that requirements are understood, interfaces are controlled, risks are visible, and technical decisions are made with appropriate consideration for mission performance, cost, schedule, reliability, and operational needs. Success in this role comes from the ability to apply systems engineering judgment, right-size processes to the maturity of the work, and keep teams aligned on delivery. This role is suited for an experienced systems engineer who can operate with autonomy, mentor junior and intermediate engineers, communicate effectively with internal and external stakeholders, and deliver high-impact technical outcomes across a multi-program environment.