{"id":2498072,"url":"https://alion.io/job/majestic-labs-performance-systems-architect","title":"Performance & Systems Architect","company":{"id":3786079,"name":"Majestic Labs","domain":"majestic-labs.ai","url":"https://alion.io/company/majestic-labs","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Comeet","truth_index":null},"role":"Hardware","role_family":"Hardware","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":["Ra'anana, Israel"],"countries":["IL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":118000,"max_usd":251000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":646},"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"Python","optional":false}],"status":"live","first_seen_at":"2026-08-18T11:50:19Z","employer_posted_date":"2026-10-18","last_verified_at":"2026-10-26T21:25:16Z","board_verified":true,"closed_at":null,"days_open":69,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":69},"description":"Description\nWe’re a fast-moving, US-Israeli AI startup building next-generation infrastructure for the world’s most demanding AI workloads. Our mission is to accelerate the future of intelligence and make it ubiquitously accessible by delivering full stack custom AI servers optimized for large-scale inference and training.\nBacked by top-tier investors and led by industry veterans, we’re scaling rapidly. We seek forward-thinking engineers and operators who thrive in a collaborative environment and excel at solving complex challenges from first principles. If you want to build infrastructure that fundamentally changes what the world can accomplish with AI, come join us!\nAbout the position\nWe are looking for a Senior Architect to work on simulation and translating architectural ideas into quantitative, defensible performance models.\nThis role is ideal for someone who lives at the intersection of:\nComputer architecture\nWorkload characterization\nSystem-level modeling\nAI / data-intensive workloads\nResponsibilities\nPerformance simulator & translate workloads into models\nExtend and maintain system-level performance models (compute, memory, interconnect, scheduling).\nModel system behaviors: NUMA effects, contention, coherence, bandwidth saturation.\nCharacterize real workloads (LLMs, GNNs, graph analytics, tabular models and more).\nGuide architectural decisions\nEvaluate architectural trade-offs \nProduce quantitative comparisons vs. existing and emerging AI platforms.\nWork closely with hardware architects, compiler/runtime teams, and external partners.\nEnsure simulator assumptions align with hardware and software reality.\nSupport external conversations\nContribute to technical deep dives with strategic partners and customers.\nHelp translate performance modeling into clear narratives for execs and investors.\nRequirements\nBSc in CS, EE, CE or similar degrees plus 8 years experience in computer architecture, systems research, or performance engineering. Or PhD in CS, EE, CE or similar degrees plus 2 years of relevant experience. \nStrong background in performance modeling or simulation (analytical, event-driven).\nExperience with AI or graph workloads.\nUnderstanding of: memory hierarchies (NUMA, caches, coherence), Interconnects (PCIe, fabrics, RDMA-), GPU-based systems.\nHands-on coding experience (Python, C/C++, or similar).\nAbility to reason from first principles, not just benchmarks.\nPreferred Qualifications\nBackground in architecture simulators ( gem5-like, in-house tools, or research frameworks).\nExposure to ML runtimes, compilers, or hardware-aware model design.\nResearch background (MS/PhD) in computer systems (CS/EE), architecture, or related fields.\nWe seek smart, curious, self-driven individuals who enjoy creative problem-solving and continuous learning. Even if you don't meet all requirements, we'd love to hear from you if you have the mindset to tackle complex challenges.\nMajestic Labs is an equal opportunity employer deeply committed to diversity of background and thought. If you are ready to dare greatly, learn from mistakes, engage in vigorous debates, and help create a step-function shift in human technical capability, we want to meet you!","description_format":"text","description_chars":3195,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":false,"languages":[]},"benefits":["Continuous learning"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-14T05:17:44Z"}],"visa":[],"liveness":{"score":38,"band":"fade","label":"Fading","p_open":1,"p_active":0.688,"p_room":0.55,"age_days":68,"expected_fill_days":46,"reasons":["conf:3","velocity","win:tail"],"computed_at":"2026-10-26T05:57:25Z"},"pay":null,"html_url":"https://alion.io/job/majestic-labs-performance-systems-architect","json_url":"https://alion.io/job/majestic-labs-performance-systems-architect.json","meta":{"generated_at":"2026-10-26T23:12:00Z","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":31589,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-27T00:00:00Z"}},"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":3786079},"rest":"https://alion.io/mcp/rest/get_company?id=3786079"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fmajestic-labs-performance-systems-architect"},{"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%2Fmajestic-labs-performance-systems-architect"},{"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%2Fmajestic-labs-performance-systems-architect"},{"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/majestic-labs-performance-systems-architect\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fmajestic-labs-performance-systems-architect"}]}