# Principal System Administrator Windows Or Linux Jobs in San Francisco, CA 58 principal system administrator windows or linux jobs in San Francisco, CA. Top employers: OpenAI, Astranis, Anthropic, and 5 more. Salaries from $30K–$500K. 58 open roles · page 1 of 4 **Senior Information Systems Security Manager (ISSM)** at Astranis San Francisco | FULL_TIME | USD 150K–218K/yr [Apply](https://zerogtalent.com/space-jobs/astranis/information-systems-security-manager-issm-4719135006) | [JD](https://zerogtalent.com/api/agent/job/information-systems-security-manager-issm-4719135006) **Account Executive** at Clicks San Francisco, CA, US | FULL_TIME | USD 100K–400K/yr [Apply](https://zerogtalent.com/ai-jobs/clicks/account-executive-117926) | [JD](https://zerogtalent.com/api/agent/job/account-executive-117926) **Client Platform Engineer** at OpenAI San Francisco | FULL_TIME | USD 347K–445K/yr [Apply](https://zerogtalent.com/ai-jobs/openai/client-platform-engineer-329fe50f-7701-4f07-982d-a4e10cbec236) | [JD](https://zerogtalent.com/api/agent/job/client-platform-engineer-329fe50f-7701-4f07-982d-a4e10cbec236) **IT Engineer - San Francisco** at HappyRobot San Francisco | FULL_TIME | USD 120K–160K/yr [Apply](https://zerogtalent.com/ai-jobs/happyrobot/it-engineer-san-francisco-f0971f8a-abca-47e2-9d56-10c15b9979d0) | [JD](https://zerogtalent.com/api/agent/job/it-engineer-san-francisco-f0971f8a-abca-47e2-9d56-10c15b9979d0) **Founding Designer** at Manaflow San Francisco, CA, US | FULL_TIME | USD 130K–170K/yr [Apply](https://zerogtalent.com/ai-jobs/manaflow/founding-designer-106825) | [JD](https://zerogtalent.com/api/agent/job/founding-designer-106825) **Software Engineer (Mission Applications)** at Astranis San Francisco | FULL_TIME | USD 130K–175K/yr [Apply](https://zerogtalent.com/space-jobs/astranis/software-engineer-mission-applications-4721733006) | [JD](https://zerogtalent.com/api/agent/job/software-engineer-mission-applications-4721733006) **Senior IT Engineer** at Plasmidsaurus San Francisco | FULL_TIME | USD 170000–195000/hr [Apply](https://zerogtalent.com/frontier-jobs/plasmidsaurus/it-administrator-4fab86ab-d0e1-4de7-9c83-0e87f5022f3e) | [JD](https://zerogtalent.com/api/agent/job/it-administrator-4fab86ab-d0e1-4de7-9c83-0e87f5022f3e) **Senior Platform Engineer | Lab Infrastructure and Security** at Plasmidsaurus San Francisco | FULL_TIME | USD 205K–250K/yr [Apply](https://zerogtalent.com/frontier-jobs/plasmidsaurus/senior-platform-engineer-lab-infrastructure-and-security-d0a5eb86-0d1a-476d-b5ee-16ee3abda03f) | [JD](https://zerogtalent.com/api/agent/job/senior-platform-engineer-lab-infrastructure-and-security-d0a5eb86-0d1a-476d-b5ee-16ee3abda03f) **IT Operations Specialist** at Atoms San Francisco, CA | FULL_TIME | USD 93K–110K/yr [Apply](https://zerogtalent.com/frontier-jobs/atoms/it-operations-specialist-8859422002) | [JD](https://zerogtalent.com/api/agent/job/it-operations-specialist-8859422002) **IT Systems Administrator** at Substack San Francisco (HQ) | FULL_TIME | USD 120K–160K/yr [Apply](https://zerogtalent.com/ai-jobs/substack/it-systems-administrator-51297a4d-6c41-4539-bdea-c9f0afbaddd8) | [JD](https://zerogtalent.com/api/agent/job/it-systems-administrator-51297a4d-6c41-4539-bdea-c9f0afbaddd8) **Senior Corporate IT Engineer** at Perplexity San Francisco | FULL_TIME | USD 150K–230K/yr [Apply](https://zerogtalent.com/ai-jobs/perplexity/it-systems-administrator-18509f15-ab49-450d-8a01-4b280e464ad0) | [JD](https://zerogtalent.com/api/agent/job/it-systems-administrator-18509f15-ab49-450d-8a01-4b280e464ad0) **Windows Systems Engineer** at Trellis AI San Francisco, CA, US | FULL_TIME | USD 100K–175K/yr [Apply](https://zerogtalent.com/ai-jobs/trellis-ai/windows-systems-engineer-96753) | [JD](https://zerogtalent.com/api/agent/job/windows-systems-engineer-96753) **Sr. DevOps Engineer** at TaxGPT San Francisco, CA, US / Remote (US) | FULL_TIME | USD 140K–160K/yr [Apply](https://zerogtalent.com/ai-jobs/taxgpt/sr-devops-engineer-95063) | [JD](https://zerogtalent.com/api/agent/job/sr-devops-engineer-95063) **Head of Security** at Kontigo San Francisco, CA, US / Remote | FULL_TIME | USD 120K–220K/yr [Apply](https://zerogtalent.com/ai-jobs/kontigo/head-of-security-99410) | [JD](https://zerogtalent.com/api/agent/job/head-of-security-99410) **Chief of Staff** at Harper San Francisco | FULL_TIME | USD 175K–225K/yr [Apply](https://zerogtalent.com/ai-jobs/harper/chief-of-staff-90246) | [JD](https://zerogtalent.com/api/agent/job/chief-of-staff-90246) [Next page](https://zerogtalent.com/principal-system-administrator-windows-or-linux-jobs-in-san-francisco.md?page=2) --- *Source: [Zero G Talent](https://zerogtalent.com), the job board for space, defense, AI, robotics and frontier-tech companies.*