Senior HPC / CUDA Optimization Engineer

We are seeking an experienced HPC / CUDA Optimization Engineer with strong expertise in modern C++, CUDA, GPU computing, and performance optimization for large-scale scientific and engineering applications. Responsibilities Design, develop, and optimize CUDA kernels for large-scale scientific and engineering applicationsAnalyze and improve GPU performance using profiling tools to identify and resolve bottlenecksImplement and optimize distributed and multi-GPU computing solutions using MPI, NCCL, and NVSHMEMDevelop and maintain high-performance C++ and Python code for performance-critical, high-load systemsCollaborate with cross-functional teams to architect scalable and efficient software solutionsDebug complex performance and memory issues across GPU architectures and distributed systemsResearch and apply best practices in HPC, numerical methods, and GPU computing to improve existing codebases Requirements 5+ years of professional experience with C++ and Python developmentDeep knowledge of CUDA, GPU architecture, PTX, memory hierarchy, and kernel optimizationExperience with GPU profiling, performance analysis, and bottleneck identificationHands-on experience with distributed and multi-GPU computing (MPI, NCCL, NVSHMEM)Experience developing and optimizing performance-critical, high-load software systemsStrong debugging and software architecture skills Nice to have Knowledge of Oil & Gas domain is a huge bonusExperience with RTM/FWI, seismic imaging, or geoscience applicationsDevelopment of HDF5-based data viewing and analysis toolsFamiliarity with scientific computing and numerical methods We offer We gather like-minded people:Top tech minds driving innovation in AI, cloud and digital platform modernizationSupportive team and agile, startup-like cultureHybrid by design mode and opportunity to work remotely within PolandChance to work abroad for up to 60 days annuallyBusiness-driven relocation opportunitiesWe provide growth opportunities:Career development programsThought leadership, mentoring, soft skills and well-being programsCertification (Anthropic, Gemini, GCP, Azure, AWS)English classesWe cover it all:Stable payParticipation in the Employee Stock Purchase Plan with a 15% discountBenefits package (health insurance, multisport, shopping vouchers)Referral bonuses up to $2,000Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and moreCorporate, social and well-being eventsPlease, note:Benefits listed above are available to employees onlyWe are open for working with Contractors. Terms of B2B cooperation agreements are agreed individuallyWe will reach out to selected candidates exclusively EPAM is global leader in AI transformation engineering and integrated consulting, serving Forbes Global 2000 companies and ambitious startups. With over thirty years of expertise in custom software, product and platform engineering, we empower our clients to become AI-Native enterprises, driving measurable value from innovation and digital investments.