{"id":10554,"url":"https://alion.io/job/fuse-energy-founding-gpu-engineer","title":"Founding GPU Engineer","company":{"id":3017,"name":"Fuse Energy","domain":"fuseenergy.com","url":"https://alion.io/company/fuse-energy","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"A","score":97,"open_postings":36,"ghost_share":0,"stale_share":0.139,"repost_share":0,"time_to_fill_p50_days":42,"computed_at":"2026-10-17T05:46:00Z"}},"role":"AI/ML","role_family":"AI/ML","seniority":null,"employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":["US","GB"],"hiring_countries_total":2,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"CUDA","optional":false},{"name":"CUDA Toolkit","optional":false},{"name":"cuDNN","optional":false},{"name":"HPC","optional":false},{"name":"InfiniBand","optional":false},{"name":"Kubernetes","optional":false},{"name":"MPI","optional":false},{"name":"NCCL","optional":false},{"name":"NVLink","optional":false},{"name":"Python","optional":false},{"name":"SLURM","optional":false},{"name":"Triton","optional":false},{"name":"C","optional":true}],"status":"live","first_seen_at":"2026-07-19T00:00:00Z","employer_posted_date":"2026-07-19","last_verified_at":"2026-10-17T18:57:19Z","board_verified":true,"closed_at":null,"days_open":90,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":90},"description":"Fuse Energy is an energy startup on a mission to make energy abundant and affordable, fast. We combine first-principles thinking with cutting-edge technology to build a radically better energy system.\nWe've raised over $200M from top-tier investors including Balderton, Lakestar, Accel, Creandum, Lowercarbon, Ribbit, 20VC, Hummingbird and Collaborative Fund, alongside strategic angels including Nico Rosberg and GPs behind Meta, Revolut, Spotify and Uber.\nWe're building a fully integrated energy company: developing our own solar, batteries and other generation projects, building our own hardware, improving and developing grid infrastructure, trading power in real time, using AI across the business, and installing distributed energy in homes. By selling directly to consumers we cut out the middleman, lower costs and pass the savings on to our customers.\nAs data centres become one of the largest and fastest-growing sources of electricity demand, Fuse is expanding into high-performance compute infrastructure at the intersection of energy and AI, optimising how power-dense GPU workloads are scheduled, cooled and balanced against grid conditions in real time. We're looking for a Founding GPU Engineer to develop and optimise GPU-accelerated software for data centre systems: low-level performance engineering for large-scale compute clusters, tying GPU workload behaviour to energy availability and grid demand. This puts CUDA/GPU performance engineering at the centre of how Fuse scales its compute infrastructure.\nResponsibilities\nDesign, implement, and optimise CUDA kernels for high-throughput, latency-sensitive workloads\nProfile and tune GPU performance across compute, memory bandwidth, and interconnect (NVLink/PCIe) bottlenecks\nBuild tooling to correlate GPU cluster power draw and utilisation with real-time energy pricing and grid signals\nOptimise multi-GPU and multi-node scaling using NCCL, MPI, or similar communication libraries\nWork with data center infrastructure teams on power capping, dynamic voltage/frequency scaling, and workload scheduling strategies that reduce energy cost and carbon intensity\nCollaborate with ML/systems engineers to integrate custom kernels into training/inference pipelines\nBenchmark against CPU/GPU baselines and drive continuous performance improvements\nContribute to internal libraries, documentation, and best practices for GPU performance engineering\nRequirements\n4+ years writing production CUDA code, or equivalent strong project/industry experience\nDeep understanding of GPU architecture (SMs, warps, memory hierarchy, occupancy)\nProficiency in C++ and CUDA; experience with Python for tooling/orchestration\nExperience with performance profiling tools (Nsight Systems/Compute)\nFamiliarity with multi-GPU/multi-node scaling (NCCL, MPI, RDMA/InfiniBand)\nStrong grasp of memory optimisation, kernel fusion and parallel algorithm design\nComfortable working across the stack, from low-level kernels to system-level infrastructure\nBonus: Triton, cuDNN, cuBLAS or custom ML inference/training frameworks; data centre power/thermal management or demand-response systems; HPC, quantitative finance or large-scale distributed systems; Kubernetes/Slurm for GPU cluster orchestration; interest in energy markets, grid systems or sustainability-focused compute\nBenefits\nCompetitive salary and eligibility for equity\nBiannual bonus scheme\nFully expensed tech to match your needs\nPrivate health insurance\nBreakfast and dinner allowance for office-based employees\nAs we hire globally, benefits vary by location.","description_format":"text","description_chars":3561,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Health insurance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"},{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Solar Energy","Wind Energy"],"lifecycle":[{"event":"open","at":"2026-07-19T00:00:00Z"}],"visa":[],"liveness":{"score":19,"band":"cold","label":"Long shot","p_open":1,"p_active":0.664,"p_room":0.28,"age_days":90,"expected_fill_days":42,"reasons":["conf:3","velocity","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/fuse-energy-founding-gpu-engineer","json_url":"https://alion.io/job/fuse-energy-founding-gpu-engineer.json","meta":{"generated_at":"2026-10-17T21:40:02Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":6373,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":3017},"rest":"https://alion.io/mcp/rest/get_company?id=3017"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ffuse-energy-founding-gpu-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Ffuse-energy-founding-gpu-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Ffuse-energy-founding-gpu-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/fuse-energy-founding-gpu-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ffuse-energy-founding-gpu-engineer"}]}