{"schemaVersion":"jobsearcher.job.v1","id":"3c3eef46eba24d512a96af7f","url":"https://jobsearcher.com/jobs/3c3eef46eba24d512a96af7f","canonicalUrl":"https://jobsearcher.com/jobs/3c3eef46eba24d512a96af7f","title":"Senior/Staff Founding Full-Stack Engineer – Agent Systems","description":"Senior/Staff Founding Full-Stack Engineer – Agent Systems\n\n*Location:* San Francisco, CA (On-site, Monday–Friday) *Type:* Full-time *Level:* Senior *Compensation:* $200,000 – $300,000/year *Sponsorship:* Visa sponsorship available (H-1B, O-1, OPT)\n\nAbout the Role\n\nWe're building AI coworkers for IT teams, with a rigorous focus on security, identity, authorization, and reliable agent execution. We're looking for a Founding Full-Stack Engineer who thrives on building complex systems from the ground up and wants significant impact on the future of AI infrastructure.\n\nThis role is backend- and systems-heavy, but you'll own the product end-to-end, spanning infrastructure, APIs, and user-facing experiences. You'll develop workflow systems for long-running human and AI agent tasks, design identity and authorization systems, build secure credential infrastructure, and work on sandboxed environments and production-grade APIs powering the next generation of AI systems.\n\nWhat We're Looking For\n\n*Must-haves:*\n\n* 4+ years of professional software engineering experience\n* Proven experience designing and operating complex production systems\n* Strong backend and systems architecture proficiency\n* Able to work in-person in San Francisco, Monday through Friday\n* High ownership and comfort navigating ambiguity\n\n*Strongly preferred:*\n\n* Experience across frontend, infrastructure, data, and product layers\n* Background in security, IAM, authorization, or workflow orchestration\n* Experience with multi-tenant SaaS or AI infrastructure\n* Strong understanding of failure modes, threat models, and system reliability\n* Ability to move fast without compromising security or correctness\n\n*Nice to have:*\n\n* Experience with permission/identity systems\n* Experience with secrets or privileged-access platforms\n* Experience with workflow engines and reconciliation systems\n* Experience with agent infrastructure and evaluation systems\n* Experience with sandboxes or virtualized execution\n* Experience with enterprise integrations\n* Prior founding/early-stage engineering experience owning architecture and production\n\nAbout the Company\n\nA fast-growing, pre-seed AI infrastructure startup building foundational technology for AI agents, with a specific focus on security and reliability. Collaborative, high-impact environment for engineers passionate about building complex systems from day one.\n\n*Benefits:* Competitive compensation, health insurance, unlimited PTO, office meals, visa sponsorship for qualified candidates.\n\nHow to Apply\n\nApply with your CV.\n\nPay: $200,000.00 - $300,000.00 per year\n\nWork Location: In person","company":"Pathlume","rawCompany":"pathlume","city":"Millbrae","state":"CA","isRemote":false,"isActive":false,"createdAt":"2026-09-06T12:38:15.384Z","occupations":[{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.05","title":"Information Security Engineers","slug":"information-security-engineers"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Senior/Staff Founding Full-Stack Engineer – Agent Systems","description":"Senior/Staff Founding Full-Stack Engineer – Agent Systems\n\n*Location:* San Francisco, CA (On-site, Monday–Friday) *Type:* Full-time *Level:* Senior *Compensation:* $200,000 – $300,000/year *Sponsorship:* Visa sponsorship available (H-1B, O-1, OPT)\n\nAbout the Role\n\nWe're building AI coworkers for IT teams, with a rigorous focus on security, identity, authorization, and reliable agent execution. We're looking for a Founding Full-Stack Engineer who thrives on building complex systems from the ground up and wants significant impact on the future of AI infrastructure.\n\nThis role is backend- and systems-heavy, but you'll own the product end-to-end, spanning infrastructure, APIs, and user-facing experiences. You'll develop workflow systems for long-running human and AI agent tasks, design identity and authorization systems, build secure credential infrastructure, and work on sandboxed environments and production-grade APIs powering the next generation of AI systems.\n\nWhat We're Looking For\n\n*Must-haves:*\n\n* 4+ years of professional software engineering experience\n* Proven experience designing and operating complex production systems\n* Strong backend and systems architecture proficiency\n* Able to work in-person in San Francisco, Monday through Friday\n* High ownership and comfort navigating ambiguity\n\n*Strongly preferred:*\n\n* Experience across frontend, infrastructure, data, and product layers\n* Background in security, IAM, authorization, or workflow orchestration\n* Experience with multi-tenant SaaS or AI infrastructure\n* Strong understanding of failure modes, threat models, and system reliability\n* Ability to move fast without compromising security or correctness\n\n*Nice to have:*\n\n* Experience with permission/identity systems\n* Experience with secrets or privileged-access platforms\n* Experience with workflow engines and reconciliation systems\n* Experience with agent infrastructure and evaluation systems\n* Experience with sandboxes or virtualized execution\n* Experience with enterprise integrations\n* Prior founding/early-stage engineering experience owning architecture and production\n\nAbout the Company\n\nA fast-growing, pre-seed AI infrastructure startup building foundational technology for AI agents, with a specific focus on security and reliability. Collaborative, high-impact environment for engineers passionate about building complex systems from day one.\n\n*Benefits:* Competitive compensation, health insurance, unlimited PTO, office meals, visa sponsorship for qualified candidates.\n\nHow to Apply\n\nApply with your CV.\n\nPay: $200,000.00 - $300,000.00 per year\n\nWork Location: In person","datePosted":"2026-09-06T12:38:15.384Z","dateModified":"2026-09-06T12:38:15.384Z","hiringOrganization":{"@type":"Organization","name":"Pathlume","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Millbrae","addressRegion":"CA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"3c3eef46eba24d512a96af7f"},"url":"https://jobsearcher.com/jobs/3c3eef46eba24d512a96af7f"}}