SeniorStaff Founding Full-Stack Engineer - Agent Systems
$200k - $300kPeople Hive HR Consultancies LLC
People Hive is supporting an early-stage AI infrastructure client in San Francisco in the search for a highly skilled Senior/Staff Founding Full-Stack Engineer Agent Systems.
The successful candidate will join the companys early-stage team and help build complex systems from the ground up with significant influence over the future of the product and technical architecture.
The client is developing AI coworkers specifically for IT teams with a strong focus on security identity authorization and reliable agent execution.
While the position is heavily focused on backend engineering and systems the successful candidate will own the product end-to-end working across infrastructure APIs and user-facing experiences.
The role includes developing workflow systems capable of supporting long-running human and AI agent tasks designing identity and authorization systems and building secure credential infrastructure. The engineer will also work on sandboxed environments and production-grade APIs supporting next-generation AI systems.
Critical Requirements
4 years of professional software engineering experience
Proven experience designing and operating complex production systems
Strong backend and systems architecture proficiency
Ability to work in person in San Francisco Monday through Friday
High level of ownership and ability to navigate ambiguity
Important Requirements
Experience working across frontend infrastructure data and product layers
Background in security IAM authorization or workflow orchestration
Experience with multi-tenant SaaS or AI infrastructure
Strong understanding of failure modes threat models and system reliability
Ability to move quickly without compromising security or correctness
Nice to Have
Experience with permission and identity systems
Experience with secrets or privileged-access platforms
Experience with workflow engines and reconciliation systems
Experience with agent infrastructure and evaluation systems
Experience with sandboxes or virtualized execution
Experience with enterprise integrations
Previous experience in an early-stage startup with ownership of architecture and production
About the Client
The client is a fast-growing pre-seed AI infrastructure startup building foundational technology for AI agents with a particular focus on security and reliability.
The company provides a collaborative high-impact environment for engineers who want to build complex systems from the ground up and have significant ownership over architecture and production.
Benefits
Competitive compensation
Health insurance
Unlimited PTO
Office meals
Visa sponsorship available for qualified candidates including H-1B O-1 and OPT
Location: San Francisco California USA
Working arrangement: On-site Monday to Friday
Employment: Full-time
Seniority: Senior
Industry: AI Infrastructure
Salary: $200000$300000 per year
People Hive HR Consultancies LLC is acting as the recruitment partner for this vacancy. Applications will be handled confidentially and shared with the client as part of the recruitment process.
Job Reference: PH-ANS-109
- ...focused product where an agent registers as a governed... ...human approval, and drives systems it was never given an... ...design partners today and a founding team of three. Full-Time, In-person, San... ...systems-heavy founding engineering role where "full-stack" means owning the product...SuggestedFull timeH1bVisa sponsorship
Thomas Talent Network
San Francisco, CA3 days ago - Wintermeyer Ventures in San Francisco, California, is seeking a Founding Engineer to build full-stack software from concept through production deployment. You... ...architecture and help ship practical, production-ready systems in a hands-on early-stage startup. This on-site role...Suggested
$180k - $230k
...automation space is hiring its first Founding Engineer. You'll join the CTO as a... ...-improving conversational agents that run product demos 24/7... ...'ll own problems across the full stack, from LLM orchestration to... ...response, and versioning systems that let customers preview changes...SuggestedFull timeRemote work- ...8 years Stage: Seed → Series B Role Type: Early hire / founding engineer Why This Role Exists You’ll help build the core product... ...Use modern AI developer tools to move faster (LLM copilots, agent workflows, testing automation) What We’re Looking For Strong...Suggested
Weekday
San Francisco, CAa month ago - ...SF Bay Area California Fully On-site We are seeking a Founding Full-Stack Engineer Real-Time AI & Wearables to build the product and infrastructure... ...and data pipelines connecting wearable devices with AI systems. Design systems that operate under tight latency...SuggestedFull time
MaxIT Consulting - Max Corporate Group
San Francisco, CA4 days ago $180k - $250k
...anonymous AI-native law firm building agentic systems for legal services. We’re identifying a small number of exceptional founding full-stack engineers from our network. If there’s a strong... .... You will be responsible for shipping agent harnesses, UIs, and integrations that...Full timeImmediate start- ...B). About this role Senior/Staff Full Stack Engineer with 10 YOE to join Mithrls engineering... ...builder excited to create foundational systems and have meaningful influence on the technology... ...Siemens. 25 people in person in SF; founded 2023; $80M total funding (Series A led...Full timeInternshipH1bFlexible hours
deCircle
San Francisco, CA5 days ago $135k - $155k
...healthcare organizations — including complex, multi-hospital systems — measure, manage, and prove the ROI of their nursing... ...readiness, all in one enterprise-grade product. As a Founding Full Stack Engineer , you'll own architecture and implementation across multiple...Local areaRelocationClera
San Francisco, CAa month ago$200k - $300k
...About this role Senior/Staff-level Full-Stack Software Engineer to build and scale Highlights cross-... ...modern TypeScript frontends to native system-level integrations with a strong... ...without switching tools. 9 employees founded 2024 $50M total funding San Francisco...Full timeH1bVisa sponsorshipdeCircle
San Francisco, CA5 days ago- We want a full stack engineer to join our team as our third engineer. You are passionate to use those skills for the greater good. You are also excited to build a digital health company from the ground up.More specifically, our technology includes: - Alex, our homegrown...
MoTek Technologies
San Francisco, CA13 hours ago - CoffeeSpace is recruiting a founding Full-Stack Engineer to join a small, high-impact team in San Francisco. You will ship agentic systems and tools that lawyers use daily, building from PostgreSQL and Node.js backend to React/Next.js frontend, and crafting integrations...
- NELP is seeking an experienced engineer to own architecture and deliver production features across four SaaS products. You will design backend models for multi-hospital structures, implement enterprise integrations, and collaborate with customers to translate needs into...Remote job
- Engineering / Product Full-time Remote (United States, San Francisco preferred) Nursing Excellence Leadership Platform (NELP) is the only unified... ...Governance, Clinical Ladders, and EBP. About NELP Building the system of record for nursing excellence NELP improves patient...Full timeRemote work
$180k - $240k
...connecting wearable devices, backend services, AI systems, and companion applications. Develop and optimize... ...in the field. Shape product architecture and engineering practices, and troubleshoot across the full stack. What We're Looking For Two to five years of...Full timeVisa sponsorship$160k - $200k
...Job Description Comity is looking for a Full Stack Developer to contribute both to our... ...admin portal. You will work with our engineering team to design, develop, test, and deploy... ...and team culture. ~ Funding $4.6M ~ Founded 2018 ~ Salary: $160k - $200k ~100% US...Work at officeRemote workHired Recruiters
San Francisco, CA3 days ago$180k - $240k
...devices in the field. Shape product architecture and engineering practices as the team grows. Debug issues across... ...real user adoption, including backend APIs, data systems, and user-facing applications. Strong full-stack skills with technologies such as TypeScript,...Visa sponsorship$120k - $180k
..., technical team building AI agent evaluation and reliability infrastructure... .... This backend-leaning full-stack role focuses on making agent... ...measurable and improving the systems that support reliable AI... ...production systems as a full-stack engineer, ideally including work at a...Full timeVisa sponsorship- ...They want to move fast with AI Agents, tools, and workflows, but... ...About The Role As the Founding PM for Agents, you'll own where... ...and run at scale, the growth engine of our customers. That means... ...orchestration, triggers, or scheduling systems. A track record turning a...Immediate startRemote work
Runlayer
San Francisco, CA3 days ago - ...Frontend Engineer (with familiarity of full stack) (Founding Team) Location: San Francisco Bay Area Type: Full-... ...user experiences to industrial-grade systems. You’ll work directly with the... ...-tenant analytics visualizations, agent interfaces, and workflow tools. If...Full timeTemporary work
Fabrion
San Francisco, CA3 days ago - Pluto is building an AI-native professional network. We’re looking for a Founding Engineer to help build this product from the ground up, working directly with the founders to create intelligent agents that search, reason, remember, and act on behalf of users. You’ll...
- Greylock Partners is seeking a hands-on founding engineer in San Francisco to build production software for AI agent security. You will own ambiguous engineering problems... ...and execution. This role focuses on runtime systems, model/inference integrations, and production...
$200k - $300k
...Pally the #1 consumer agent in the world. The role... ...This is a hands-on engineering role. You’ll design it,... ...halfway. Scheduling. The system behind “remind me... ...you ship. ~ You want founding-team scope. You’ll set... ...and health insurance. Full-time, in person in San...Full timePally
San Francisco, CA2 days ago$150k - $190k
...Description About the Role An early-stage startup is hiring a Founding Full Stack Engineer to help build its product from the ground up. This role... ...production Design and implement frontend and backend systems with scalability in mind Own services, data models, and...Remote workFlexible hours- ...Role We are looking for a Founding Engineer with 1+ years of professional... ...pivotal role in building our core agent infrastructure, shaping our... ...-powered workflows, scraping systems, and large-scale knowledge... ...Contribute broadly across the stack and the company, including developer...
Clera
San Francisco, CA14 days ago - ...funds this hire. The role: You’re the first engineering hire. The next 18 months are about... ...architecture decisions from day one. The stack is clean and the codebase is small. What... ...Compensation Competitive base salary + meaningful founding equity. #J-18808-Ljbffr Quin AI
- Oho Group is building a platform where people and AI agents work together. We’re hiring a Founding Engineer to shape the backend infrastructure that lets agents execute complex tasks reliably, coordinate with each other and keep humans involved. This role offers an equity...
$200k - $300k
...Description About the Role Own the backend systems behind an AI assistant that... ...text, email, and phone. As a hands-on founding engineer, you will design, build, and operate reliable... ...infrastructure for message delivery, long-running agent tasks, and scheduled actions. What...Full timeImmediate start$140k - $210k
...Space - AI Marketplace /Full time /On-siteWanna join... .... We are hiring the founding developer of that marketplace... ...from MVP to the system behind dozens of partner... ...close collaboration with engineering teams.Build connectors... ...building and shipping full-stack products.Experience...Full timeTemporary workLoft Orbital
San Francisco, CA1 day ago$150k - $205k
...that helps people and AI agents do their best work.We'... ...fast. Since our founding in 2019, we've grown to... ...roleAs a Senior Fullstack Engineer, you'll own a product area... ..., but many of its core systems are still being designed... ...vary by location. All full-time employees receive...Full timeTemporary workWork at officeHome officeFlexible hoursScribe
San Francisco, CA1 day ago$148.5k - $223.9k
...where humans with agents drive customer success... ...Level: Software Engineering Senior MTSTeam:... ...and operator of the systems that keep... ...ensure our monitoring stack is invisible, resilient... ...and manage the full monitoring stack within... ...benefits can be found at the following...Full timeSalesforce
San Francisco, CA13 hours ago
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to SeniorStaff Founding Full-Stack Engineer - Agent Systems. Be the first to apply!
- remote .net full stack web developer San Francisco, CA
- senior java full-stack developer San Francisco, CA
- full stack / python developer (remote) San Francisco, CA
- mid level full stack developer San Francisco, CA
- mean stack developer San Francisco, CA
- java full stack angular developer San Francisco, CA
- c# .net full stack developer San Francisco, CA
- full stack developer contract San Francisco, CA
- full stack engineer San Francisco, CA
- junior full-stack web developer San Francisco, CA