Lead C++ Developer

We are seeking a talented Lead C++ Developer to join the highly interdisciplinary CoreML team, where you will drive the performance and optimization of both training and serving, delivering massive impact for customers. In this role, you will have exposure to the newest Tensor Processing Unit (TPU), Graphics Processing Unit (GPU) hardware, the latest ML models, and advanced toolchains that bridge them. Your work will directly enable AI research, production deployments and the broader open-source ecosystem, addressing complex technical issues that impact the efficiency and scalability of AI across the industry.

Responsibilities

• Design and optimize high-performance kernels (using languages like Pallas, Mosaic and Triton) targeting TPU and GPU architectures for critical ML operations, from massive training runs to high-speed inference
• Architect benchmarking suites, autotuning frameworks, performance analysis tools, regression testing and documentation for custom kernels in key OSS libraries
• Track advancements in hardware architectures, compiler technologies and AI models to identify performance optimization opportunities
• Engage with ML researchers, framework developers (JAX, PyTorch) and compiler engineers (XLA) to enhance adoption and resolve bottlenecks

Requirements

• Bachelor's degree or equivalent practical experience
• 7+ years of industry experience
• 5 years of software development in C++ or Python
• 3 years of experience testing, maintaining or launching software products and 1 year of software design and architecture experience
• Expertise in kernel-level performance optimization
• English proficiency at B2 level or higher

Nice to have

• Experience optimizing TPU/GPU code using low-level kernel languages such as Pallas, CUDA or Triton
• Knowledge of ML frameworks (JAX, PyTorch), attention mechanisms and Mixture of Experts (MoEs)
• Understanding of modern accelerators, including data movement, pipelining and heterogeneous compute
• Understanding of compiler principles and toolchains such as MLIR and OpenXLA
• Experience building developer infrastructure, OSS libraries and high-performance APIs

We offer

• Engineering community of industry professionals and a friendly working environment
• Flexible schedule and remote work opportunity within Poland
• Opportunity to work abroad for up to 60 days annually and relocation opportunities
• Career roadmap, leadership development and certification programs (GCP, Azure, AWS)
• Stable income (Employment Contract or B2B) and participation in the Employee Stock Purchase Plan
• Benefits package including health insurance, multisport, shopping vouchers and referral bonuses
• Corporate, social and well-being events

Please note: The set of bonuses might vary based on the role – specifics will be discussed during the interview process. We will reach out to selected candidates exclusively.