{"id":68333,"url":"https://alion.io/job/vast-c-software-engineer","title":"C++ Software Engineer","company":{"id":26005,"name":"Vast.ai","domain":"vast.ai","url":"https://alion.io/company/vast","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"C","score":64,"open_postings":15,"ghost_share":0.6,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","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":["Los Angeles, United States","San Francisco, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":155000,"max":285000,"currency":"USD","period":"year","gross":null,"usd_annual":285000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"LLM","optional":false},{"name":"Zero Trust","optional":false},{"name":"C++","optional":true},{"name":"Linux","optional":true},{"name":"Python","optional":true}],"status":"live","first_seen_at":"2026-07-03T00:30:12Z","employer_posted_date":"2026-07-03","last_verified_at":"2026-10-17T06:21:31Z","board_verified":true,"closed_at":null,"days_open":106,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":106},"description":"About Us\nVast.ai ’s cloud powers AI projects and businesses all over the world. We are democratizing and decentralizing AI computing-reshaping our future for the benefit of humanity.\nWe are a growing and highly motivated team dedicated to an ambitious technical plan. Our structure is flat, our ambitions are out-sized, and leadership is earned by shipping excellence.\nWe seek engineers with strong intrinsic drive, a true passion for advancing the state of the art, and a mix of architecture, coding, and communication skills.\nLOCATION: On-site at our office in San Francisco or Westwood, Los Angeles.\nAbout the Role\nAs a Systems Software Engineer, you will work on key performance critical systems such as the daemon which orchestrates every host in our fleet. You will improve the performance, reliability and capability of our infrastructure and containerization technologies including monitoring and telemetry.\nFull-time\n\nOn-site at either our SF or LA offices\n\nTech Stack\nC, C++, Python, Linux\nIdeal Experience\nProgramming: Strong programming skills in at least one language, ideally C++\n\nLinux and Virtualization: Extensive knowledge of Linux kernel internals, containerization technologies, and virtualization\n\nIsolation Techniques: Deep understanding of workload and network isolation techniques in multi-tenant environments\n\nCloud Security: Experience in securing and hardening cloud infrastructure, particularly in environments with untrusted workloads\n\nMulti-tenant Security: Strong background in workload and network isolation, network security, and cloud-native security practices\n\nGPU Security: Experience with GPU programming and an understanding of GPU-specific security concerns.\n\nKey Responsibilities\nExpand andextend our GPU cloud daemon\n\nDesign anddeploy market-based resource management systems\n\nHarden code and infrastructure to meet zero-trust standards\n\nBenchmark, profile, and eliminate bottlenecks across hypervisor, container, and network layers\n\nInterview Process\nAfter submitting your application, our technical team reviews your credentials. 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