- RainesDev (San Francisco, CA)
- A tech startup in the insurance sector is seeking an experienced backend developer to build and optimize their AI -driven claims processing platform. ... Responsibilities include designing scalable systems, developing APIs, and collaborating with the founding team. Candidates should have over 5 years of experience in … more
- Clipbook, Inc (San Francisco, CA)
- …a clear path to engineering leadership as we scale. Full Notion JD: https://clipbookio.notion.site/ Founding - Backend -Engineer- AI ... to and engage the world. We are the vertical AI category leader for the $100 billion communications, public...our Series A in early 2026. What You'll Do Architect & build core backend systems. Drive… more
- on Kernel (San Francisco, CA)
- A startup focusing on AI applications is seeking a Founding Backend Engineer to architect core systems for their platform. You'll design and develop ... scalable developer tools, set technical direction, and contribute to a dynamic company culture. The role requires experience in building APIs and enthusiasm for high-velocity environments. The company offers competitive salary, equity, and unlimited PTO, with… more
- RainesDev (San Francisco, CA)
- …States | Posted on 10/07/2025 About the company Our client is building the AI ‑enabled infrastructure to power the next generation of hiring - reimagining how people ... our vision of building a common app and personal AI agent for your career. Backed by top‑tier investors...today. Roles and Responsibilities Design, develop, and maintain scalable backend services to help us serve millions of users… more
- Menlo Ventures (San Francisco, CA)
- …With backing from Menlo Ventures, we're leveraging cutting-edge technologies like agentic AI , LLMs, and Retrieval-Augmented Generation (RAG) to build a platform that ... foundational teammate will build the infrastructure that powers our AI -driven procurement platform, enabling seamless data categorization and harmonization, Agentic… more
- Plaud (San Francisco, CA)
- …work atmosphere. About the Role We\'re hiring a highly motivated and entrepreneurial Founding Backend Engineer to lead the technical execution of our "Plaud ... About Plaud Inc. Plaud is building the world\'s most trusted AI work companion for professionals to elevate productivity and performance through note-taking… more
- Sawmills.AI Inc. (San Francisco, CA)
- …systems. By integrating deeply with OpenTelemetry and cloud-native infrastructure, Sawmills AI enables teams to reduce observability cost, improve data quality, and ... Lead design/development of Telemetry Data Management Platform Craft scalable backend systems that integrate with open technologies (OpenTelemetry) Develop/scale … more
- Together For Talent (San Francisco, CA)
- Founding Software Engineer | AI for... AI agents for complex supply chain workflows. Architect scalable backend systems and real‑time interfaces ... people take for granted. What's In It For You Be the founding engineer shaping a next‑generation AI platform from the ground up. Work side‑by‑side with a deeply… more
- Amadeus Search (San Francisco, CA)
- …Responsibilities Architect full-stack applications with React.js (frontend) and Python ( backend ) Deploy scalable infrastructure on AWS/GCP for AI training ... AI systems . In just 5 months , they've secured massive contracts with frontier AI labs , have a 3-person founding team , and are scaling rapidly with strong… more
- Amadeus Search (San Francisco, CA)
- …This is a high‑ownership role where you'll collaborate directly with the founding team to architect and scale customer‑facing applications. Responsibilities ... Role: Founding Fullstack Engineer Location: New York or San...$220k + 1%-1.5% equity Stage: Early‑stage, high‑growth startup Industry: AI + LegalTech Founded: 2021 About the Company An… more
- Fabrion (San Francisco, CA)
- …of the industry's most critical infrastructure problems. About the Role We're hiring a founding full stack engineer to help architect and build the platform from ... Founding Engineer (Full Stack) Location: San Francisco Bay...and long‑term upside - this is for you. Responsibilities Architect and build scalable APIs, backend services,… more
- Motion Recruitment Partners LLC (San Francisco, CA)
- Founding Engineer - AI Startup (San Francisco, In-Office) An early-stage, venture-backed AI startup in San Francisco is hiring its first Founding ... want to help define the future of an emerging AI product, this role offers significant impact and autonomy....role offers significant impact and autonomy. What You'll Do Architect , build, and deploy end-to-end features across the stack-from… more
- Hirewell (San Francisco, CA)
- …the ground up Lead by doing: write production-level code in your strongest area ( backend , AI systems, or frontend) while building and mentoring a high-performing ... Chief Technology Officer "CTO" - Founding Engineering Leader Direct Hire Salary Range :...commit to customer adoption at scale Experience with high-performance backend systems, modern frontend stacks, or AI /ML… more
- Sitreps (San Francisco, CA)
- …Software Engineering experience. Fullstack Capable: You are highly proficient with Python ( backend ) and React/NextJS (frontend). AI ‑Native: You know how to ... components like seatbelts and diving tanks to advanced, life‑saving drones. Usul's AI platform parses this "firehose" of information to strategically match companies… more
- Carnot (San Francisco, CA)
- A dynamic tech company is seeking a Full-stack engineer in San Francisco to architect and develop both frontend and backend for their enterprise workflow ... experience, a strong command of TypeScript and React, and an understanding of AI frameworks. The role emphasizes hard work, independence, and the ability to… more
- Ring Inc (San Francisco, CA)
- About the Company Company Size: Industry: Agentic AI , Automation, Enterprise Software Founding Year: 2023 Stage: Early-Stage Startup Tech Stack: Python, AWS, ... foundational systems while staying deeply hands‑on. What You'll Tackle: Architect and build backend systems, APIs, and...the team in NYC. Why You'll Want to Join: Founding seat at a venture‑backed, mission‑driven AI … more
- Talent Altitude (San Francisco, CA)
- …into scalable, production‑ready systems. Responsibilities Architect and deploy scalable backend systems and cloud infrastructure for AI -driven products. Lead ... and large-scale data pipelines . This is a high‑impact founding opportunity for someone who thrives in fast‑paced startup...You'll play a pivotal role in building the core AI infrastructure , collaborating directly with leadership to turn… more
- Omi (San Francisco, CA)
- Hi, I'm Nik. I'm looking for a world‑class founding engineer to build Omi with me. Omi is AI for your real life. Think: wearable memory, voice‑first interface, ... Own the full stack (Flutter/React Native, Python, firmware, BLE, backend , etc - depending on what you're best at)..., etc - depending on what you're best at) Architect the next version of Omi SDK / platform… more
- Loophq (San Francisco, CA)
- …power the future of digital‑first restaurants. About the Role We are looking for a Founding Engineer with 4+ years of backend engineering experience to join our ... About Loop Loop AI is a San Francisco-based tech company founded...systems. Deep expertise in Python, Django, PostgreSQL (or similar backend stack) . Proven ability to architect ,… more
- Asystem (San Francisco, CA)
- …a patchwork of agencies, spreadsheets, and siloed tools with one self-improving AI system. It creates ads, builds matching landing pages, allocates budgets across ... different channels, and more. We are building the AI engine that will manage and spend the world's...applications using Node.js, TypeScript, and Nuxt (Vue). System Architecture: Architect and manage robust database schemas with PostgreSQL and… more
