Senior Embedded Software Designer (6+ month Contract)

About Kepler Communications 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 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! Key Responsibilities - Design, develop, and maintain reliable, high-quality embedded software for both spacecraft and ground-based systems supporting a growing fleet of satellites. - Design and implement secure communications capabilities, including encryption, authentication, and key exchange for next-generation data links. - Build and maintain low-level software components including device drivers, kernel modules, hardware interfaces, and platform services. - Develop automated tests, validation tools, and technical documentation to support robust software delivery and long-term maintainability. - Participate in software architecture discussions, design reviews, and code reviews to ensure software quality and system reliability. - Collaborate closely with cross-functional teams to define system requirements, debug complex issues, and evolve system architecture. - Identify performance gaps, reliability risks, and architectural shortcomings in existing systems, and drive improvements across the software stack. - Provide technical leadership, mentorship, and guidance to junior engineers while contributing to engineering best practices and development standards. Required Skills & Qualifications - 6+ years of experience developing embedded software for complex, high-reliability systems. - Bachelor’s degree in Computer Science, Computer Engineering, Electrical Engineering, or equivalent practical experience. - Strong software engineering fundamentals, including system design, debugging, testing, performance analysis, and maintainable code development. - Proficiency in C/C++ for embedded systems, including concurrency, interrupt handling, memory-mapped peripherals, and hardware communication interfaces such as SPI, I2C, UART, and CAN. - Experience developing software for embedded Linux and/or RTOS environments, including familiarity with build systems such as Yocto/OpenEmbedded and operating systems such as FreeRTOS. - Experience developing low-level embedded Linux components including kernel modules, device drivers, and device tree integrations. - Experience developing and maintaining automated test frameworks, validation tooling, or hardware/software integration test environments.