{"id":2352710,"url":"https://alion.io/job/azul-staff-compiler-performance-engineer","title":"Staff Compiler Performance Engineer","company":{"id":95669,"name":"Azul","domain":"azul.com","url":"https://alion.io/company/azul-3","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"A","score":85,"open_postings":5,"ghost_share":0,"stale_share":0.6,"repost_share":0,"time_to_fill_p50_days":56,"computed_at":"2026-10-13T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"staff","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Prague, Czech Republic","Belgrade, Serbia","Limassol, Cyprus","Toronto, Canada","United States"],"countries":["CZ","RS","CY","CA","US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":60000,"max_usd":127000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":2065},"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"Java","optional":false},{"name":"LLVM","optional":false},{"name":"OpenJDK","optional":false},{"name":".NET","optional":true},{"name":"C#","optional":true}],"status":"live","first_seen_at":"2026-07-31T09:37:54Z","employer_posted_date":"2026-07-31","last_verified_at":"2026-10-13T05:05:18Z","board_verified":true,"closed_at":null,"days_open":73,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":73},"description":"As the only company focused 100% on Java, Azul is building the Java platform for the modern cloud enterprise. We are reimagining how customers use Java, bringing them the tools and insight they need to deliver faster, more performant, more dependable, and less expensive Java services. Come join one of the most influential members of the Java and OpenJDK community and help influence the future of Java.\nFalcon is the optimizing just in time (JIT) compiler in Azul Platform Prime. It compiles hot Java bytecode into highly optimized machine code and delivers Java performance that standard JVMs do not reach. Falcon is built on LLVM.\nWe are looking for a Staff Compiler Performance Engineer to set the technical direction for Falcon performance. This is not a compiler front end role and not a compiler built from scratch: Falcon is mature and runs in production at large enterprises. You will decide where the next significant performance gains come from, lead the design of the optimizations that deliver them, and make sure the compiler architecture supports the product roadmap.\nYou will be the senior technical voice on a distributed team of compiler experts and a key partner for runtime, GC and product teams.\nWhat You Will Do\nDefine the performance strategy for Falcon: identify the largest opportunities across benchmarks and customer workloads and turn them into a technical roadmap\nLead design of complex, cross cutting optimizations in the optimizer and code generator, and of the interfaces between the compiler, the runtime and the garbage collector\nMake architectural decisions on the Falcon optimization pipeline, compile time budget and tiering strategy\nLead enablement of Falcon on new hardware platforms and new Azul products\nMentor senior engineers, review critical designs and code, and set standards for performance methodology and validation\nRepresent Azul in the LLVM community: drive upstream design discussions and contributions that benefit managed language compilers\nMinimum Requirements\n8+ years of professional experience developing optimizing compilers or JIT compilers\nTrack record of technical leadership: owning the design of major compiler components or optimization frameworks used in production\nExpert C++ skills and experience in large, long lived codebases\nDeep expertise in compiler optimization and code generation, with a clear view of the tradeoffs between peak performance, compile time, warmup and code size\nExpert performance analysis skills down to the microarchitecture level\nNice to Have\nRecognized contributions to LLVM or another major compiler: code owner, maintainer or author of significant upstream work\nDeep experience with JIT compilers for managed languages: HotSpot C2, Graal, V8, .NET RyuJIT or similar\nExperience working closely with runtime and GC teams on speculation, deoptimization and barrier design\nWhat We Offer\nOpportunity to make a high impact at a growing, global company\nWork alongside top experts worldwide contributing to the Java ecosystem\nReferral Program - help us grow with great people\nPremium IT equipment - MacBook Pro or hardware of your choice\n5 weeks of holidays + 5 sick days\nFlexible working hours\nPrague / Limassol / Belgrade city center offices OR hybrid/full-remote - UP TO YOU\nCompetitive compensation","description_format":"text","description_chars":3292,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Apple Macbook","Flexible schedule"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"},{"name":"Canada","iso":"CA","kind":"country"},{"name":"Cyprus","iso":"CY","kind":"country"},{"name":"Czech Republic","iso":"CZ","kind":"country"},{"name":"Serbia","iso":"RS","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Cloud Platforms (IaaS & PaaS)","Developer Tools"],"lifecycle":[{"event":"open","at":"2026-10-12T14:10:59Z"}],"visa":[],"liveness":{"score":35,"band":"fade","label":"Fading","p_open":1,"p_active":0.788,"p_room":0.44,"age_days":73,"expected_fill_days":56,"reasons":["conf:0","win:tail","crowd:"],"computed_at":"2026-10-13T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/azul-staff-compiler-performance-engineer","json_url":"https://alion.io/job/azul-staff-compiler-performance-engineer.json","meta":{"generated_at":"2026-10-13T07:53:52Z","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":11594,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-14T00:00:00Z"}},"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":95669},"rest":"https://alion.io/mcp/rest/get_company?id=95669"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fazul-staff-compiler-performance-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%2Fazul-staff-compiler-performance-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%2Fazul-staff-compiler-performance-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/azul-staff-compiler-performance-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fazul-staff-compiler-performance-engineer"}]}