Founding Software Engineer - AI/LLM Platform
HMBL
A leading tech recruiting firm in San Francisco is seeking a Founding Software Engineer for an early-stage AI & LLM startup. You will contribute to innovative technology development using Python and web frameworks like Django. The ideal candidate should have over 3 years of experience in web services, database optimization, and a Computer Science degree. This role values ownership and impact on projects, offering a unique opportunity to shape the direction of the company. #J-18808-Ljbffr HMBL
- Dormont Manufacturing Co is seeking a Founding Software Engineer for its early-stage AI & LLM startup based in San Francisco. The ideal candidate should have a strong background in Python, experience with web frameworks like Django, and substantial production server experience...Platform
$175k - $250k
...Founding Software Engineer About Scorecard Scorecard is building the leading evaluation and development platform for AI agents. Our mission is to empower cross-functional teams to ship AI products... ...libraries [Bonus] Skills in LLM development (OpenAI, LangChain, etc....PlatformWork at officeDay shift€90k - €140k per year
...-stage B2B SaaS startup seeking a Founding Product Engineer to join their team in San Francisco... ...significant scope to create an AI-native procurement platform that transforms procurement workflows... ...TypeScript and experience with LLM integration. Your responsibilities...Platform€80k - €160k per year
...the Role A Y Combinator-backed AI creative tools startup is hiring its founding software engineer . You'll work directly with the... ...of an AI-powered motion design platform — turning what once took hours... ...architecture. Build and optimize agentic LLM systems, including tool-calling...PlatformFull timeWork at officeWorldwideVisa sponsorship€90k - €140k per year
...An early-stage B2B SaaS startup building an AI-native procurement intelligence platform is looking for a Founding Product Engineer . The company is replacing fragmented, manual... ...backend services to prompt engineering and LLM integration. Prototype rapidly and iterate...PlatformRemote work- ...We're building the AI workforce for the physical... ...founder Obaid Khan co-founded Motive — scaled it to... ...build the core agent platform that automates complex... ...on all three. Set the engineering bar. Early team decisions... ...shipping production software, with meaningful full-...Platform
$175k - $225k
...Founding Full-Stack Software Engineer (React / Node.js / NestJS / PostgreSQL) Carma Technologies, Inc. Base pay range: $175,000.00/yr - $2... ...time Department: Engineering We’re building an AI-native platform that transforms fleet operations from tedious, manual...PlatformFull timeWork at officeRemote work- Founding Software Engineer Location: San Francisco (preferred) Type: Full-time · Founding Team About... ...robotics engineers by building a full-stack platform—hardware, software, and ML—designed... ...including Logan Kilpatrick (Google AI), Mohith Mothukuri (Physical Intelligence...PlatformFull time
- ...building the next generation of AI-powered products and... ...more effectively. As a founding member of the Legal engineering team, you will help define... ...As a Founding Full‑Stack Software Engineer on the Legal... ...applications on top of OpenAI’s platforms, and developing new...Platform
$200k - $250k
Overview Founding Applied AI Fullstack Engineer - FinTech Startup - $200k-$250k + Equity | San Francisco Bay Area... ...Engineer (5+ years) to shape the platform end-to-end, working closely with the... ...implement the AI intelligence layer (LLM orchestration, not model training) Prototype...Platform- Founding Software Engineer - TruTec About TruTec TruTec is an AI-powered construction takeoff platform that is revolutionizing a $17 billion industry . We automate the tedious, manual process of site measurement and material estimation—turning hours or days of work into...PlatformFor contractorsInternship
- ...before. You're building the platform that makes that happen. About the role This is a founding engineering role. You'll own entire systems... ...pipelines that power Navi's AI, the interfaces instructors and... ...you 5+ years of professional software engineering experience, with...PlatformLive in
$150k - $300k
...Goliath Partners Fast-Growing AI Startup | Well-Funded |... ...the Role: We are seeking a Founding AI Engineer to join our early-stage, high... ...models. Familiarity with cloud platforms (AWS, Google Cloud, etc.). A... ...Sign in to set job alerts for “Software Engineer” roles. Mountain...PlatformFull timeSummer workInternship$175k - $195k
...Francisco working at the intersection of biology, hardware, AI, and IoT. We closed our seed round in November 2025... ...launches in August. The Role We are hiring a Founding Software Engineer to own the software platform that turns our foundation model and IoT hardware...PlatformPermanent employmentFull timeTemporary workWork at officeImmediate start$200k - $275k
...Managing Recruitment Consultant at Harnham US — Data, AI & Tech → Mid-West & South Atlantic Founding Software Engineer $200,000 to $275,000 + COMPANY A cutting-edge AI... ...in designing and scaling our AI-powered platform from the ground up, driving key technical decisions...PlatformFull time- Overview DevOps Engineer (Founding Team) Location: San Francisco Bay Area Type: Full-... ...About the Role We're building an AI-native, multi-tenant enterprise platform for complex domains in industrial... ...differentiator: Experience running LLM orchestration frameworks (e.g....PlatformFull timeImmediate start
- ...Founding Senior Software Engineer (SF In-Person Preferred)Â Posted We are hot Tech Startup building the AI-native intelligence layer for physical operations... ...powers our agentic AI platform. You'll work directly with... ...- not just integrating LLM APIs, but architecting the...Platform
$175k - $225k
A leading tech recruiting firm seeks an AI / LLM Software Engineer to work onsite in San Francisco. As a founding engineer, you will design and build core systems, lead technical architecture decisions, and implement AI workflows. The role requires a minimum of 2 years...Full time- Founding Robotics Software Engineer Location: San Francisco (preferred) / US Type: Full-time · Founding Team... ...robotics engineers by building a full-stack platform—hardware, software, infra, and ML—... ...including Logan Kilpatrick (Google AI), Mohith Mothukuri (Physical...PlatformFull time
- Subquadratic Inc. in San Francisco is seeking a Founding Developer Advocate to launch and grow the developer ecosystem around their next-generation LLM platform. You will build relationships with developers and create technical content showcasing how to utilize SubQ's...PlatformFlexible hours
$200k - $300k
Bronco is an applied AI lab helping chipmakers... ...About the role As a founding ML research engineer at Bronco AI, you will... ...in Computer Science, Software Engineering, or... ...Experience building LLM applications and agentic... ...with cloud computing platforms and distributed systems...PlatformLocal area- ...a VC-backed industrial AI startup in San Francisco, seeks a Founding Fullstack Engineer to build foundational infrastructure... ...for an AI-native platform. You will own end-to-end features, from LLM-powered data pipelines... ...years of experience in software engineering,...Platform
$150k - $185k
Early-career founding AI role for a recent graduate or engineer with roughly two years of experience... ...gets captured. The software that was supposed to fix... ...purpose-built, AI-native platform that doesn't just automate... ...regression suites, the LLM‑as‑judge rubrics. This is...PlatformFull timeInternshipWork at office- ...the team We’re building the AI-native compliance platform for community banks and... ...answer. Our team includes engineers and researchers from Stanford... ...of the role This is a true founding engineer role . You won’t just... ...‑on experience shipping LLM integrations or RAG systems...Platform
- ...aviation technology company in San Francisco seeks a founding engineer to build and scale their innovative AI platform for aviation. You will own entire systems and... ...operators. Applicants should have significant software engineering experience, particularly in cloud infrastructure...Platform
$175k - $250k
Kindredventures is seeking a Founding Software Engineer in San Francisco to help build cutting-edge AI tools. You'll define core architecture and work directly with customers to deliver exceptional user experiences. The role requires proficiency in TypeScript, React, and...Platform- ...with a seed-stage AI company as it makes... ...raise. This is a founding-team role for an... ...model layer than the platform layer and can lead... ...write code, lead engineers and make core AI... ...model selection, LLM tooling, fine‑tuning... ...in a high‑growth software company also highly...PlatformFlexible hoursShift work
- Rise Technical Recruitment Limited is seeking a Founding Senior Software Engineer in San Francisco. This role offers a unique opportunity to work with... ...backed startup focused on disrupting a massive industry using AI. Responsibilities include building AI agents, maintaining...Platform
- PassFort is seeking a Founding Software Engineer to innovate within TruTec, an AI-powered construction platform set to revolutionize the $17 billion industry. You will take charge of features, optimize performance, and ensure cross-platform reliability. The ideal candidate...Platform
$130k - $175k
...your interest in Uncountable Engineering! Description Uncountable is... ...lead the transformation of our platform into an AI-first R&D ecosystem. We are... ...Generative AI. As an LLM Applications Engineer, you will... ...Equity Requirements 2+ years of software development experience with...Platform
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Founding Software Engineer - AI/LLM Platform. Be the first to apply!
- software engineer amazon San Francisco, CA
- experienced software developer San Francisco, CA
- federal - software developer San Francisco, CA
- software developer internship San Francisco, CA
- senior software engineer San Francisco, CA
- software developer fintech San Francisco, CA
- part time software developer remote San Francisco, CA
- software developer intern San Francisco, CA
- software data engineer San Francisco, CA
- fall software engineering internship San Francisco, CA

