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 the advanced tool chains that bridge them.

Your work will directly enable AI research, production deployments and the broader open-source ecosystem, addressing complex technical issues that directly impact the efficiency and scalability of AI across the industry.

• Design and optimize high-performance kernels (using languages like Pallas, Mosaic and Triton) targeting Tensor Processing Unit (TPU) and Graphics Processing Unit (GPU) architectures for critical Machine Learning (ML) operations, redefining what's possible from massive training runs to high-speed inference
• Architecture of infrastructure such as benchmarking suites, autotuning frameworks, performance analysis tools, regression testing and documentation, transforming how the developer community interacts with increasingly critical custom kernels in key Open-Source Software (OSS) libraries
• Track the latest advancements in hardware architectures, compiler technologies and AI models to identify new opportunities for performance optimization through custom kernels
• Engagement with ML researchers, framework developers (Just After eXecution (JAX), PyTorch) and compiler engineers (Accelerated Linear Algebra (XLA)) to enhance adoption, identify new requirements and address bottlenecks by providing appropriate solutions

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

• Skills in optimizing TPU/GPU code, using low-level kernel languages like Pallas, Compute Unified Device Architecture (CUDA) or Triton
• Knowledge of ML Frameworks (JAX/PyTorch), common operations like attention and Mixture of Experts (MoEs), including model optimization and low-precision formats
• Understanding of modern accelerators (e.g., data movement, pipelining, heterogeneous compute and scale-out)
• Understanding of compiler principles (optimization, code generation) and tool chains such as MLIR and OpenXLA
• Showcase of building developer infrastructure, including Open-Source Software (OSS) libraries, flexible high-performance APIs and easy-to-consume documentation to empower the community

• We gather like-minded people:
  • Engineering community of industry professionals
  • Friendly team and enjoyable working environment
  • Flexible schedule and opportunity to work remotely within Poland
  • Chance to work abroad for up to 60 days annually
  • Business-driven relocation opportunities
• Outstanding career roadmap
• Leadership development, career advising, soft skills, and well-being programs
• Unlimited access to Linked In Learning, Get Abstract, Cloud Guru
• We cover it all:
  • Stable income (Employment Contract or B2B)
  • Participation in the Employee Stock Purchase Plan
  • Benefits package (health insurance, multisport, shopping vouchers)
  • Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more
  • Referral bonuses
  • Corporate, social and well-being events