{"id":726966,"url":"https://alion.io/job/quilter-seniorstaff-software-engineer-c","title":"Applied Scientist","company":{"id":685587,"name":"Quilter","domain":"quilter.ai","url":"https://alion.io/company/quilter","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":75,"open_postings":5,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-30T05:48:23Z"}},"role":"AI/ML","role_family":"AI/ML","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":{"min":180000,"max":200000,"currency":"USD","period":"year","gross":null,"usd_annual":200000},"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"HPC","optional":false},{"name":"Python","optional":false},{"name":"Reinforcement Learning","optional":false},{"name":"Reinforcement Learning","optional":false},{"name":"CUDA","optional":true}],"status":"live","first_seen_at":"2025-09-29T16:40:20Z","employer_posted_date":"2025-09-29","last_verified_at":"2026-10-31T00:07:20Z","board_verified":true,"closed_at":null,"days_open":396,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":394},"description":"About Quilter\nAt Quilter, we are helping electrical engineers save time and accomplish more by automating the tedious and time-consuming task of designing printed circuit boards (PCBs). Our small team is composed of experts in electrical engineering, electromagnetic simulation, ML/AI, and high-performance computing (HPC). We are inventing and leveraging novel techniques to solve the decades-old problem of automating circuit board design where today hundreds of billions of dollars are spent. We have raised $25 million in Series B funding from some of the very best and are charging full-speed toward our goal.\nNo matter where we come from, we're united by a common vision for the future and a core set of values we think will get us there:\nCuriosity\n\nConviction\n\nRigor\n\nQuilter is seeking Senior to Staff C++ Engineers to join our engineering teams developing the next generation of automated PCB design. You’ll design high-performance C++ algorithms, data structures, and systems that tackle some of the hardest challenges in computational geometry, optimization, high-performance computing, and physics simulation. As a senior engineer, you’ll shape the technical roadmap, mentor peers, and help build the foundation for superhuman PCB design.\nYou may contribute to one of several specialized teams:\nCore Router Team: Build the algorithms and data structures that fundamentally define how circuit boards are routed, creating scalable, physics-aware routing engines.\n\nHomotopy Team: Refine raw routing outputs into high-quality, manufacturable layouts using geometric transformations that enforce real-world PCB design rules.\n\nRouter Agent Team: Develop the infrastructure, parallelization, and APIs that power reinforcement learning agents and routing algorithms at massive compute scale.\n\nPhysics Team: Implement geometry checks and physics simulations-electromagnetic, thermal, and manufacturing-to validate routed boards for real-world performance.\n\nWhat You’ll Do\nArchitect and implement high-performance C++ libraries, algorithms, and systems for routing, optimization, and simulation.\n\nDesign scalable data structures and computational methods to handle complex PCB design challenges.\n\nStrong collaboration skills and the ability to work with domain experts across different disciplines.\n\nProvide mentorship, technical reviews, and guidance to elevate the team’s engineering practices.\n\nWhat We’re Looking For\n3-10+ years of industry experience maintaining and extending large, high-performance C++ codebases in collaborative environments.\n\nA strong academic background with deep expertise in one or more of the following areas: computational geometry, graph algorithms, optimization, high-performance computing (HPC), meshing, numerical methods, physics simulations, or related fields.\n\nProficiency in Python for prototyping and integration with ML systems.\n\nExperience architecting and scaling large, collaborative C++ codebases.\n\nStrong mathematical and algorithmic intuition, with ability to translate theory into production systems.\n\nLeadership skills in mentoring, reviewing, and guiding engineering direction.\n\nA passion for pushing the boundaries of what's possible in automated circuit design.\n\nNice to Have (General)\nAdvanced degree (M.Sc. or Ph.D.) in computer science, computational physics, robotics, or related fields.\n\nExperience with reinforcement learning, CAD/EDA tools, or physics-based optimization.\n\nExposure to GPU programming (CUDA), parallel/distributed algorithms, or HPC frameworks.\n\nContributions to open-source geometry, simulation, or HPC projects.\n\nNice to Have (Per Team)\nCore Router Team: Expertise in graph theory, computational geometry, operations research, optimization, numerical analysis, or simulation.\n\nHomotopy Team: Background in geometric constraints, optimization methods, or mesh refinement.\n\nRouter Agent Team: Expertise with parallel programming, distributed systems, HPC frameworks, or API design.\n\nPhysics Team: Knowledge of simulations, physics engines, finite element methods (FEM), high-performance compute, or distributed compute.\n\nPlease note: We are an equal opportunity employer. At this time, we are focused on hiring primarily within the US, with occasional exception to accommodate exceptional talent.\nWhat we offer:\nInteresting and challenging work\n\nCompetitive salary and equity benefits\n\nHealth, dental, and vision insurance\n\nRegular team events and offsites (~4x / year)\n\nUnlimited paid time off\n\nPaid parental leave\n\nWant to learn more about Quilter, our vision, and our investors? 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