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 infrastructure such as benchmarking suites, autotuning frameworks, performance analysis tools, regression testing and documentation for custom kernels in OSS libraries
• Track advancements in hardware architectures, compiler technologies and AI models to identify new performance optimization opportunities
• Collaborate 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 experience in C++ or Python software development
• 3 years of experience testing, maintaining or launching software products and 1 year of experience 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 Pallas, CUDA or Triton
• Knowledge of ML frameworks (JAX, PyTorch), attention, Mixture of Experts (MoEs) and low-precision formats
• Understanding of modern accelerators (data movement, pipelining, heterogeneous compute, scale-out)
• Knowledge of compiler principles and toolchains such as MLIR and OpenXLA
• Experience building OSS libraries and high-performance APIs with clear documentation

We offer

• Engineering community and friendly working environment
• Flexible schedule and remote work within Poland
• Opportunity to work abroad for up to 60 days annually
• Business-driven relocation opportunities
• Career roadmap, leadership development and certification programs (GCP, Azure, AWS)
• Access to LinkedIn Learning, Get Abstract and Cloud Guru
• Stable income (Employment Contract or B2B)
• Employee Stock Purchase Plan
• Benefits package (health insurance, multisport, shopping vouchers)
• Modern offices, referral bonuses and corporate events

Please note: The set of bonuses may vary depending on the role. Only selected candidates will be contacted.