{"id":447426,"url":"https://alion.io/job/arago-architecture-modeling-engineer","title":"Architecture Modeling Engineer","company":{"id":173018,"name":"Arago","domain":"arago.inc","url":"https://alion.io/company/arago-2","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":83,"open_postings":4,"ghost_share":0,"stale_share":0.5,"repost_share":0,"time_to_fill_p50_days":76,"computed_at":"2026-10-26T05:57:25Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","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":["Paris, France"],"countries":["FR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":44000,"max_usd":81000,"period":"year","method":"role_country_seniority_unknown","sample_n":201},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"C++","optional":false},{"name":"Python","optional":false}],"status":"live","first_seen_at":"2026-08-28T09:41:59Z","employer_posted_date":"2026-08-28","last_verified_at":"2026-10-27T04:24:42Z","board_verified":true,"closed_at":null,"days_open":59,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":59},"description":"Meet Arago and the Aragonians\nArago’s mission is to re-engineer the foundations of computing from first principles.\nThe explosive growth of AI is pushing the industry to rethink how processors are built. Arago is meeting that challenge with a proprietary technology that fuses optical and CMOS technologies to deliver an order-of-magnitude increase in performance.\nArago is the fastest, and currently the only, company to have built such a processor. It's backed by leading deep-tech investors and some of the most respected figures in semiconductors and computing, including the CEO of Arm, the founder of macOS who worked directly with Steve Jobs at Apple, an Nvidia Fellow, the Head of Optics at Google, and many other industry leaders.\nOur work is guided by three clear values: do great things, move with high velocity, and operate as one unit. We work in a demanding environment where constant learning, ownership, and execution are expected, and where exceptional people have the opportunity to do their life’s work.\nWhat you’ll do\nAs Architecture Modeling Engineer you will own performance modeling and workload analysis for Arago's optical AI accelerator, working across hardware and software teams to evaluate design choices, shape the programming model, and optimize key compute kernels. This role turns workload requirements into architecture decisions and, ultimately, high-performance software on silicon.\nRequired Skills and Experience\nStrong mathematical background, particularly in linear algebra, probability, numerical methods, and quantitative performance analysis.\n\nStrong knowledge of computer architecture, including compute pipelines, memory hierarchies, interconnects, and parallel execution.\n\nStrong C/C++ and Python programming skills.\n\nExperience analyzing and optimizing performance-critical kernels or low-level compute workloads.\n\nGood understanding of AI/ML workloads, tensor operations, data movement, and common execution patterns.\n\nAbility to work across hardware and software teams and translate workload behavior into architecture and software requirements.\n\nLanguage: English at a proficient level.\n\nResponsibilities\nDevelop fast, flexible performance models to evaluate AI accelerator architecture choices and guide early design decisions.\n\nWork closely with the software team to characterize key AI workloads, kernels, dataflows, and system bottlenecks.\n\nWork closely with hardware architects to model compute, memory, interconnect, and scheduling behavior across proposed architectures.\n\nDrive rapid performance studies and trade-off analyses across throughput, latency, utilization, bandwidth, and efficiency.\n\nHelp define and validate the programming model and workload mapping strategy for the accelerator.\n\nFollowing architecture definition, work hands-on with the software team to optimize compute kernels and key workloads for the target hardware.\n\nBuild lightweight simulation, profiling, and analysis tools that support fast iteration from architecture exploration through software optimization.\n\nNice to have\nStrong industry knowledge about AI hardware, GPUs, memory generations, rack-scale computing.\n\nExperience building performance models, simulators, or analytical models for CPUs, GPUs, NPUs, or other accelerators.\n\nExperience with profiling, benchmarking, and identifying hardware or software performance bottlenecks.\n\nExperience in novel computing architectures: analog computing, in-memory computing, heterogeneous systems.\n\nPay and benefits\nCompetitive cash compensation, with final package based on location, experience, and the pay of team members in similar positions.\n\nMeaningful stock option plan offered (included in the majority of full time offers).\n\nHealthcare coverage (including family-friendly options), pension contributions, professional development support, and 25 days of PTO, in addition to public holidays.\n\nOwnership of a key technical domain, with significant vertical and/or horizontal growth opportunities, based on performance and individual drive.\n\nWe look forward to hearing how you can help shape the future of AI at 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