Runtime Engineer

Runtime EngineerWe are working with an ambitious AI infrastructure company building a new software stack that enables machine-learning workloads to run efficiently across diverse hardware targets.They are looking for a Runtime Engineer to build the execution layer at the heart of their compiler platform. You will take optimised compiler output and make it run efficiently, correctly and at scale across modern AI hardware.This is a deeply systems-focused role spanning parallel execution, kernel scheduling, runtime architecture and performance analysis. You will work close to hardware while collaborating directly with compiler engineers to turn optimisation ideas into real-world performance.What you’ll doDesign and develop a multi-target runtime for AI workloadsBuild parallelisation, partitioning and kernel-scheduling capabilitiesPrototype and evaluate new runtime approaches using performance dataBenchmark compiler output on target hardware and diagnose bottlenecksDevelop profiling and analysis tools that guide runtime and compiler improvementsWork with product and compiler teams to evolve the platform around real ML-engineering needsWhat we’re looking for4+ years working on compiler or runtime systemsStrong modern C++Deep understanding of asynchronous and concurrent programmingFamiliarity with memory hierarchies and vector/scalar executionOS kernel or hypervisor development experienceGPU programming, CUDA/ROCm, HPC, large clusters, PyTorch, JAX or Triton experience would be valuableYou will build the runtime that determines whether next-generation AI infrastructure merely works or genuinely performs. It is a rare opportunity to work across hardware intrinsics, compiler output and distributed execution, with real ownership over a foundational systems product.