Senior Software Engineer – AI Compiler & Runtime Infrastructure

About Xcelerium Xcelerium is a venture-backed fabless semiconductor company building the next generation of autonomous compute silicon optimized for real-time, physical AI. We develop high-performance processors and software that enable deterministic, low-latency execution for converged sensing, communications, and AI tasks — addressing limitations of conventional CPU, GPU, and FPGA architectures. Our technology powers advanced radar, wireless communications, sensor processing, and machine-learning workloads across applications including aerospace & defense, robotics, autonomous systems, and next-generation wireless infrastructure. At Xcelerium, software innovation — from compilers and runtimes to schedulers and microkernel development — is essential to unlocking the performance and efficiency of our hardware. Role Summary We are looking for a hands-on, experienced engineer to lead development of our AI compiler stack and runtime infrastructure. You will help architect, implement, and optimize compiler passes, schedulers, and runtime systems that translate high-level programs into high-performance code for our custom hardware. This role is a perfect fit for engineers who thrive on systems-level challenges — including compiler internals, runtime design, optimization, and tooling — and want to make a direct impact on how tomorrow’s real-time systems are built. What You’ll Do Technical Responsibilities • Design and implement core compiler components (IR transformations, optimization passes, backend codegen). • Build and optimize runtime systems, including task schedulers, resource managers, and execution engines. • Collaborate closely with hardware architects to define ABI, scheduling strategies, and performance targets. • Diagnose performance issues using profiling and benchmarking tools; propose and implement improvements. • Take ownership of features end-to-end — from design through validation and documentation. Leadership & Collaboration • Influence long-term compiler and runtime architecture. • Lead design reviews and technical discussions. • Mentor and guide other engineers on best practices in systems programming and compiler design. Who You Are Required Experience • 7+ years of software engineering experience with significant work in compilers and/or runtime systems. • Expert in C/C++ (Python for tooling and automation a plus). • Deep understanding of compiler internals (IR, passes, optimizations, codegen). • Strong runtime and scheduler design experience. • Proven ability to ship production-quality systems software with measurable impact. Preferred • Hands-on experience with MLIR, IREE, LLVM, or similar compiler frameworks. • Experience designing schedulers and execution systems for accelerators. • Familiarity with profiling tools and performance analysis. • OSS contributions or publications in relevant areas. Salary & Benefits 💰 Salary Range: $190,000 – $260,000 + equity (DOE) We believe in transparency and aligning compensation with market expectations for senior engineers in specialized systems roles. 🚀 Equity & Stock Options We offer generous stock option grants — giving you real ownership and upside in the company’s success. Additional Benefits • Comprehensive medical, dental, and vision coverage • Flexible hybrid work model • 401(k) plan • Paid time off (PTO) • Professional development support Why Join Us At Xcelerium, you’ll work on core software components that directly enable the performance and efficiency of our hardware. You’ll be part of a team solving complex systems challenges at the intersection of software and silicon — making a real impact in mission-critical domains. Apply now to help shape the future of real-time, edge computing infrastructure.