{"id":3490362,"url":"https://alion.io/job/bolt-graphics-hpc-software-engineer","title":"HPC Software Engineer","company":{"id":668900,"name":"Bolt Graphics","domain":"bolt.graphics","url":"https://alion.io/company/bolt-6","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Rippling","truth_index":{"grade":"A","score":91,"open_postings":33,"ghost_share":0.061,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":75,"computed_at":"2026-11-02T06:13:15Z"}},"role":"Backend","role_family":"Backend","seniority":"staff","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Sunnyvale, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":225000,"max_usd":420000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":1500},"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"C++","optional":false},{"name":"CMake","optional":false},{"name":"CUDA","optional":false},{"name":"HPC","optional":false},{"name":"Linux","optional":false},{"name":"OpenMP","optional":false},{"name":"Python","optional":false},{"name":"TBB","optional":false},{"name":"Assembly","optional":true},{"name":"Julia","optional":true},{"name":"LLVM","optional":true}],"status":"live","first_seen_at":"2026-10-29T20:34:05Z","employer_posted_date":"2026-10-29","last_verified_at":"2026-11-02T15:29:00Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":3},"description":"Bolt Graphics is a semiconductor startup based in Sunnyvale, CA building the fastest and most efficient graphics processors. We pride ourselves on our first principles approach to solving problems. We are energized by our mission to reduce the barrier of entry for content creation and consumption. Our goal is to enable everyone to easily create, simulate and consume immersive experiences as vividly as they can imagine them.\nOur Values\nBe Fearless: Unmute yourself. Test boundaries and get proven right.\nRemain Adaptable: Stay comfortable in a continuously changing world. If you’re wrong, concede and move on.\nEducate Your Ego: Selflessly collaborate towards our shared purpose.\n About the role:\nWe are seeking a talented and experienced HPC Software Engineer to develop and optimize high-performance computing solutions for complex, computationally intensive applications.\nThe ideal candidate will have 5+ years of experience in HPC environments, such as supercomputing, financial technology (FinTech), national laboratories, or hyperscale computing, with a strong preference for senior-level engineers with 7-10+ years of experience, including Principal Engineers. You must have deep technical expertise in C/C++, parallel computing, and performance engineering with strong mathematical, analytical, and problem-solving skills. You should be passionate about solving challenging computational problems and developing high-performance solutions.\nWhat you'll do:\nDesign, develop, and optimize high-performance software using C, C++, Python, and Linux-based development environments.\nImplement and optimize parallel computing algorithms for modern CPU and GPU architectures.\nDevelop and optimize software by using parallel programming models and hardware acceleration technologies, including OpenMP, CUDA, SIMD, SIMT, AVX, and SVE.\nAnalyze application performance, identify computational bottlenecks, and improve execution speed, memory efficiency, and scalability.\nDevelop and maintain HPC applications supporting computationally intensive workloads, including physics simulations, fluid dynamics, molecular dynamics, and scientific computing.\nImprove code generation, execution efficiency, and hardware utilization by working at the systems and compiler level.\nIdentify and mitigate potential risks and issues in HPC projects.\nConduct research and experiments to drive continuous improvement and innovation in HPC architecture.\nDrive the development and implementation of new HPC features and technologies.\nContribute to software architecture, technical design decisions, code reviews, and engineering best practices.\nRequired Qualifications:\nMust have strong expertise with HPC software development tools, libraries, and frameworks, including OpenMP, TBB (oneTBB), and CMake.\nExperience with HPC use cases: physics simulations, fluid dynamics, molecular dynamics.\nExpert-level proficiency in C, C++, Python, and Linux.\nStrong understanding of parallel computing concepts, concurrency, multithreading, and performance optimization.\nStrong applied experience with CPU/GPU computing architectures and optimization techniques, including CUDA, AVX, SIMD, and SIMT.\nStrong mathematical, analytical, and problem-solving skills.\nExperience developing, profiling, debugging, and optimizing computationally intensive applications.\nHands-on experience enabling software on GPUs.\nComfortable working across abstraction layers from architecture concepts to implementation and debugging.\nAbility to work independently on complex engineering problems and collaborate effectively with distributed teams.\nAbility to collaborate with cross-functional teams to translate complex mathematical and computational requirements into efficient software solutions.\nPreferred Qualifications\nBachelor’s or Master’s degree in Applied Mathematics, Electrical Engineering, Computer Engineering, Computer Science, Physics, or related field.\nSenior or Principal level experience preferred: Senior - 7+ years of experience; Principal - 10+ years of experience.\nExperience with Julia, assembly language, LLVM, compiler infrastructure, or compiler optimization.\nExperience developing software for supercomputers, large-scale compute clusters, or hyperscale infrastructure.\nProven track record of leading complex projects from concept to completion.\nExcellent verbal and written communication skills, with the ability to mentor engineers, influence technical decisions, and effectively collaborate within cross-functional local and global teams.\nBackground in scientific computing, numerical methods, computational physics, fluid dynamics, molecular dynamics, or large-scale simulations.\nUS Citizen preferred.\nCompensation Range: 5+ years of experience: $165,000 - $180,000 per year (California); 7+ years of experience: $180,000 - $250,000; 10+ years of experience: $250,000 - $300,000. This range represents the anticipated base pay for this role based in California; the final offer may vary based on qualifications, experience, and location.\nBenefits:\nMedical, Dental, & Vision - 100% covered premiums\nEquity - Stock Options\n401(k) match\nWFH Hardware\nBolt is committed to building a diverse and inclusive environment in which we recognize and value each other’s differences as well as fostering a culture that promotes its core values: Professionalism, Integrity, and Respect. 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