{"id":714656,"url":"https://alion.io/job/persimmons-compiler-engineer-frontend","title":"Compiler Engineer (Frontend)","company":{"id":685393,"name":"Persimmons","domain":"persimmons.ai","url":"https://alion.io/company/persimmons","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"B","score":81,"open_postings":4,"ghost_share":0,"stale_share":0.75,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-30T05:48:23Z"}},"role":"Frontend","role_family":"Frontend","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["San Jose, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":125000,"max_usd":285000,"period":"year","method":"role_country_seniority_unknown","sample_n":712},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Apache TVM","optional":false},{"name":"Assembly","optional":false},{"name":"C++","optional":false},{"name":"Diffusion Models","optional":false},{"name":"IREE","optional":false},{"name":"JAX","optional":false},{"name":"LLVM","optional":false},{"name":"MLIR","optional":false},{"name":"Python","optional":false},{"name":"PyTorch","optional":false},{"name":"TensorFlow","optional":false},{"name":"TensorFlow C++","optional":false},{"name":"XLA","optional":false}],"status":"live","first_seen_at":"2026-02-09T00:00:00Z","employer_posted_date":"2026-02-09","last_verified_at":"2026-10-30T10:30:51Z","board_verified":true,"closed_at":null,"days_open":263,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":262},"description":"Who we are:\nPersimmons is building the infrastructure that will power the next decade of AI. Founded in 2023 by veteran technologists from the worlds of semiconductors, AI systems, and software innovation, We’re on a mission to enable smarter devices, more sustainable data centers, and entirely new applications the world hasn’t imagined yet.\nWhy join us:\nWe’re growing fast and looking for bold thinkers, builders, and curious problem-solvers who want to push the limits of AI hardware and software. If you're ready to join a world-class team and play a critical role in making a global impact - we want to talk to you.\nWhat you’ll do:\nAs a leader on our team, you have the opportunity of working on optimizing our Persimmons Compiler.\nDesign and build the compiler that converts AI models from popular ML frameworks into assembly code that runs on our accelerator hardware.\nDevelop and implement novel scheduling algorithms that push the boundaries of technology. \nCollaborate with cross-functional teams to design, test, and optimize our hardware and software solutions.\nAnalyze and improve the efficiency, scalability, and performance of our systems.\nStay abreast of industry trends and advancements to ensure our solutions remain competitive and innovative.\nProvide technical leadership across the compiler team, mentoring engineers in advanced compiler techniques, and help scale the team as the company grows.\nRequirements\nWhat You Bring To The Table:\n6+ years of experience in compiler development, and deep knowledge of modern compiler frameworks (LLVM, MLIR, TVM, XLA, IREE)\nProven track record of leading compiler or runtime systems projects from design through deployment.\nExperience processing models from popular frameworks (e.g. PyTorch, TensorFlow, JAX), and familiarity with model architecture and workloads (transformers, diffusion models, etc.)\nFamiliarity with auto-scheduling and program synthesis techniques for high-performance ML kernels (e.g., TVM, Halide, or Ansor), or experience with other hardware-aware scheduling techniques.\nFamiliarity with hardware architectures and their optimization implications, including memory hierarchies, systolic arrays, DMA engines, and GPU-style parallelism.\nDemonstrated fluency with modern AI tools and workflows (e.g., leveraging AI assistants for research, analysis, or productivity).\nIf you can do the above, you already have strong C++ and python skills\nBS/MS/PhD degree in Computer Science, Computer Engineering, or related field (or equivalent experience)\nStrong interpersonal, verbal and written communications skills\nCapability to achieve objectives under tight deadlines\nExperience executing tasks while managing competing priorities\nPractical knowledge working with large code bases\nExperience writing and debugging multithreaded programs\nDeep understanding of technology and passion for what you do\nStrong teamwork, specifically a proven ability to effectively guide and influence within a dynamic matrix environment\nExcellent problem-solving skills and the ability to work in a dynamic, fast-paced environment.\nBenefits\nCompetitive salary and benefits package.\nFlexible PTO\n401k\nPlease note: Our organization does not accept unsolicited candidate submissions from external recruiters or agencies. Any such submissions, regardless of form (including but not limited to email, direct messaging, or social media), shall be deemed voluntary and shall not create any express or implied obligation on the part of the organization to pay any fees, commissions, or other compensation. Direct contact of employees, officers, or board members regarding employment opportunities is strictly prohibited and will not receive a response.","description_format":"text","description_chars":3699,"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":["401k plan"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["AI Agents","Custom Software Development"],"lifecycle":[{"event":"open","at":"2026-09-11T05:41:46Z"}],"visa":[],"liveness":{"score":4,"band":"cold","label":"Long shot","p_open":1,"p_active":0.127,"p_room":0.28,"age_days":263,"expected_fill_days":24,"reasons":["conf:3","win:tail","crowd:"],"computed_at":"2026-10-30T05:48:23Z"},"pay":null,"html_url":"https://alion.io/job/persimmons-compiler-engineer-frontend","json_url":"https://alion.io/job/persimmons-compiler-engineer-frontend.json","meta":{"generated_at":"2026-10-30T13:25:06Z","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":345,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-31T00:00:00Z"}},"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":685393},"rest":"https://alion.io/mcp/rest/get_company?id=685393"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fpersimmons-compiler-engineer-frontend"},{"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%2Fpersimmons-compiler-engineer-frontend"},{"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%2Fpersimmons-compiler-engineer-frontend"},{"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/persimmons-compiler-engineer-frontend\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fpersimmons-compiler-engineer-frontend"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":714656}},{"tool":"search_jobs","arguments":{"company":"persimmons.ai","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":714656},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. Docs: https://alion.io/developers"}}