Senior Software Engineer (C++ UI)

• At Roku, the UI Systems team builds the high-performance engines and core graphics infrastructure that power millions of devices. We own the low-level C++ frameworks, rendering pipelines, and system architectures that enable smooth navigation and rich animations
• Our work sits at the intersection of hardware and software, where we optimize graphics rendering, memory management, and layout engines to ensure a consistent, lightning-fast experience across our entire device portfolio
• We operate in a collaborative, high-trust environment, partnering closely with firmware and silicon teams to push the boundaries of what’s possible on embedded hardware
• As a Senior Software Engineer , you will be a key architect of the core systems that underpin Roku’s user experience
• You will design and implement performance-critical code within our UI engine, focusing on graphics primitives, memory efficiency, and hardware acceleration
• You’ll tackle complex systems-level challenges—such as optimizing frame rates on resource-constrained hardware and building robust APIs for higher-level frameworks
• This role is ideal for engineers who thrive on low-level systems programming, care about performance down to the microsecond, and want to build the high-performance foundations that power the future of television
• Architect and optimize core C++ UI frameworks and rendering engines to ensure buttery-smooth performance across a diverse range of hardware profiles
• Lead technical investigations into system-level bottlenecks, memory leaks, and GPU/CPU synchronization issues
• Develop and maintain low-level graphics APIs and layout systems that serve as the backbone for Roku’s application ecosystem
• Integrate AI/ML capabilities at the systems level, leveraging generative AI tools to optimize code generation and automate performance profiling
• Collaborate with firmware and driver teams to leverage hardware-specific optimizations and ensure seamless integration with the underlying OS
• Mentor junior developers through deep-dive code reviews, architectural design sessions, and technical documentation of core systems
• Drive engineering excellence by implementing advanced debugging tools, automated performance regression suites, and modern C++ best practices

Benefits

• Medical, wellness and financial benefits
• Free snacks and access to the company fitness center
• Unlimited paid time off policy
• Work from home opportunities- Strong root cause analysis skills, specifically using tools like GDB, Valgrind, or platform-specific profilers
• Deep understanding of systems programming, including memory management, multi-threading, and hardware-software abstraction layers
• A proactive mindset with a passion for squeezing every drop of performance out of embedded systems and a commitment to data-driven optimization
• Knowledge of AI applications and hands-on experience using generative AI tools to accelerate systems-level development
• Experience with graphics APIs (e.g., OpenGL, Vulkan, or proprietary embedded graphics stacks) and rendering pipelines
• Minimum of 5+ years of software engineering experience with a heavy focus on C++ (C++14/17/20)
• Proficiency in Python for tooling and automation, with a working knowledge of BrightScript or JavaScript being a significant plus