Founding Full-Stack Engineer: LLM/AI Infra & APIs
Transformcap
Transformcap is seeking a founding full-stack engineer to join our team in New York, NY. In this role, you will take ownership of core application components, including designing APIs and deployment workflows while collaborating closely with other co-founders. The role requires strong full-stack development skills, particularly in Python, FastAPI, and AWS. We offer competitive benefits including medical insurance, relocation support, and visa sponsorship for international applicants. #J-18808-Ljbffr Transformcap
$140k - $220k
...Founding Full-Stack Engineer Location: New York City Company Stage of Funding: Venture-Backed Pre-Seed AI Infrastructure Startup Office Type: In-Office... ...backend infrastructure, APIs, data systems, and... ...management. ~ Familiarity with LLM orchestration frameworks...SuggestedWork at office- ...Role Type: Early hire / founding engineer Why This Role Exists... ...power the product — from APIs and data models to... ...async workflows Ship full-stack features when needed Own... ...and tooling Leverage AI developer tools to accelerate... ...healthcare / fintech) LLM integrations, AI...SuggestedWeekday work
$180,000 - $220,000 per day
...Founding Engineer (AI Agents + Frontend Craft) Location: Remote (U.S.) — strong preference for... ...You’ll Do Build and ship across the full stack— React, Next.js, TypeScript , backend... ...owning integrations with third-party APIs and systems (auth, rate limits, edge cases...SuggestedH1bRemote workVisa sponsorship$140k - $170k
...Title : Founding Full-Stack Engineer Location : New York City (Union Square) In-person, 6 days/week... ...They are an early-stage startup building AI-native software to help companies better... ...Familiarity with modern AI tooling, LLM workflows, or applied product experimentation...SuggestedImmediate start- ...Full-Stack Engineer Opportunity At Lume Lume is doing for enterprise data... ...solves this problem by leveraging AI to act as a translation layer... .../Python backend services, API development, and PostgreSQL data... ...High Impact: You will be a founding member and thus inherit the...SuggestedWork at office
$150k - $200k
...Hazel is the AI coworker for consumer... ...: she runs full playbooks... ...We're hiring engineer #2 to join the founding team. What you... ...Beyond that: Full-stack product... ...workflows: streaming LLM responses,... ...writing soon The infra that ties it together... ...’ve owned an API at scale,...- ...infrastructure , powering AI-native workflows that... ...data pipelines, robust APIs, and real-time inference... ...unstructured data using LLM-based agents, and delivers... ...’ll tackle rich backend engineering challenges like: ️ System... ...efficient Multi-Tenant Infra - Isolate customer data...Remote work
- ...something bigger. We are a full-service consulting firm that was founded on the premise of... ...are seeking a Full Stack Engineer, for a project-... ...schema design and API development through... ..., Cosmos DB, Azure AI, and Azure DevOps... ...products wrapping LLM APIs, building prompt...Contract workRemote work
- ...processing through advanced AI and OCR while offering... ...to be expanding our founding team and are looking for a talented Full Stack Engineer to help us build and scale... ...cutting edge of OCR and LLM technologies and industry... ...with third‑party APIs, like Stripe, Anthropic,...Contract work
- ...companies interact with AI agents. We believe that... ...looking for a Senior Full Stack Engineer to help us build Vendia... ...applications, SDKs, and APIs that serve as the critical... ...cloud data into LLM-powered applications or... ...investors. Vendia was founded by industry veterans, Dr...Remote workHome office
- ...Maple, we're building AI agents that work for restaurants... ...the role As a Full Stack Engineer , you'll work across... ...closely with product, infra, and design to deliver... ...from UIs to APIs, and help shape our internal... ...that feels like a founding team Full health, dental...Work at officeFlexible hours
$150k
...Founding Full Stack Engineer Founding Full Stack Engineer (Frontend-Leaning) Compensation: Up to $150K base (varies by level and interview performance... ...: Up to $10K assistance available Stage: Seed-stage legal AI startup | $3M funding | ~6 engineers | Hiring 2–3 engineers...Work at officeLocal areaRelocationRelocation package$250k
A fast-growing tech company in New York is seeking a Founding Engineer to build and ship assessment tools that simulate technical interviews... ...staffing firms evaluate technical talent. Experience with full-stack web applications and a passion for equitable tech hiring are...$125k - $175k
A mental health startup is seeking a Founding Full-Stack Engineer to lead the development of AI-powered systems aimed at improving mental health care for older adults. This is a unique opportunity to shape core software from architecture to launch while working alongside...Remote job- ...time as an early engineer at a seed/... ...enterprise experience. Full-stack generalist who... ...voice/audio, LLM apps, or data/... ..., backend, and infra in a single PR... ...third-party APIs under latency/reliability... ...hire building AI for frontline... .... Strong founding team: Backgrounds...Immediate startRemote work
- ...falling behind on AI adoption. Their... ..., the LLM orchestrates - it... ...The Team The founding team spent a combined... ...built the analytics engine behind $100M+... ...modern AI and data stacks, plus the... ...Mantis VC firms. Full Stack Engineer... ...data sources. Infra: AWS. AI: Model...Work at office
- ...Our Products Our AI-powered suite of... ...proprietary statistical engine to test creatives 30%... ...including Acorns, Bluechew, Found, Coffee Meets Bagel,... ...needle. You're a full-stack engineer with robust LLM, Node/Typescript and... ...js frontend, and LLM API based chat and...Full timeWork at officeRemote work3 days per week
$140k - $170k
...client is an applied AI and data... ...organization's full data landscape -... ...manufacturing. Founded by a technical team... ...- the engineers joining at this... ...mid-level full-stack position. You will... ...TypeScript • Design APIs, data models, and... ...agentic AI systems, LLM integrations, or...Work at officeRemote workHome officeFlexible hoursNight shift- A fintech company in New York is seeking a Full Stack Engineer focused on web development to enhance their AI-powered lending platform. The role involves developing scalable applications, building APIs, and ensuring optimal user experience. Candidates should have a background...Remote job
$120k - $180k
Overview Founding Full-Stack Engineer (EMS Experience Required) Join to apply for the Founding Full-Stack Engineer (EMS Experience Required) role at... ...transforming emergency medical services (EMS) through AI-powered tools. We are building the greatest tools ever made...Full timeWork at office- Kinetic is seeking a founding engineer for PayMe, a fast-growing fintech product based in New York. In this role, you will transform ambiguous... ...closely with product, growth, and design teams, and leverage AI heavily in your work. This is an exciting opportunity to shape...
$110k - $140k
...Daat Lab is an AI venture studio that... ...for a software engineer to help take... ...You’ll own the full product cycle including... .... Build full-stack applications (backend... ..., data layer, infra, deployment, and... ...), plus LLM/agent workflows... ...React/Next.js + APIs + DB + deployments...Full timeFor contractors- ...clinics by providing AI-powered software,... ...contracting, and full back‑office... ...office. Role: Full Stack Software Engineer We’re a tiny engineering... ...machines, the API contracts, the AI... ...you're building an LLM pipeline for clinical... ...scale correctly. Founding engineer autonomy,...Full timeLive inWork at officeRelocationShift work
- Workday, Inc. is seeking a Full Stack Engineer for the Developer Agent team in the United States. This... ...capabilities intended to enhance AI-powered developer experiences. The successful... ...participate in upholding best practices in API governance and engineering. Key...Remote jobFull time
- A technology-driven company in Brooklyn seeks a founding full-stack engineer to enhance their platform and solve complex customer challenges. This... ...both frontend and backend technologies, with a passion for AI applications. The company embraces a flexible work environment...Flexible hours
- ...client building AI-powered products... ...generalist product engineer with 0 to 5... ...doing Build full-stack features end to... ...including AI or LLM-powered features... ...expanded scope, a founding title, or obvious... ...everyone touches infra, frontend, and everything... ...fundamentals: API design, data...Work experience placement
- Tech Holding is looking for a Full Stack Engineer to join their consulting team. You will work across... ...Azure-hosted services and utilizing AI tools in your workflow. The ideal candidate... ...TypeScript, capable of designing clean APIs and leveraging Microsoft Azure platforms...Contract work
- ...team of an Industrial AI start-up founded by a Stanford professor... ...around proprietary AI Engines that handle scarce and... ...of integrating LLM Agentic AI as a data interface... ...for a talented full-stack software engineer to build... ..., and maintain robust APIs using Axios and Golang...Hourly payFull timeTemporary workWork at officeRemote workFlexible hours
$156k - $185k
Senior Full Stack Software Engineer - Remote in US Knock is redefining the... ...and competitiveness. Founded in 2015, Knock has grown... ...backend services, APIs, and data pipelines that... ...communication. Contribute to AI‑powered features and... ...applications—such as LLM integration (OpenAI,...Remote jobFull timeLocal areaFlexible hours- Nomic, Inc. is seeking a Senior Software Engineer for their New York office. This hybrid role... ...Nomic platform, where you'll work on UI, APIs, and backend services primarily using Python... ...engineering, with a strong focus on using AI coding tools as part of their workflow....Work at officeFlexible hours
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