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 TPU and 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 new performance optimization opportunities.
• Engage with ML researchers, framework developers (JAX, PyTorch) and compiler engineers (XLA) to enhance adoption and address bottlenecks with appropriate solutions.

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 in software design and architecture.
• 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, Mixture of Experts (MoEs), model optimization and low-precision formats.
• Understanding of modern accelerators including data movement, pipelining, heterogeneous compute and scale-out.
• Understanding of compiler principles (optimization, code generation) and toolchains such as MLIR and OpenXLA.
• Experience building developer infrastructure, including OSS libraries, high-performance APIs and documentation.

We offer

• Engineering community of industry professionals and friendly team environment.
• Flexible schedule and opportunity to work remotely within Poland.
• Opportunity to work abroad for up to 60 days annually and relocation support.
• Career roadmap, leadership development, certifications (GCP, Azure, AWS) and learning platforms.
• Stable income (Employment Contract or B2B), Employee Stock Purchase Plan and benefits package.
• Referral bonuses and corporate, social and well-being events.

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