Founding Engineer, Frontend
$150k - $220kOrthogonal
About Orthogonal Orthogonal (YC W26) is building the infrastructure layer for AI agents to discover, access, and pay for APIs. We're starting with go-to-market, the APIs that power outbound, enrichment, and growth. We're two technical cofounders in San Francisco. The Role This is a founding role, not a maintain-the-codebase role. You'll own how developers experience Orthogonal — the dashboard, API marketplace, and playground — making complex agent and API workflows feel obvious. You'll work directly with both founders and ship code users see immediately. What you'll do Build and own the developer dashboard, API marketplace (discover), and playground Design intuitive UX for agent and API workflows, auth, and real-time logs and usage Craft our docs, onboarding, and SDK/CLI developer experience Obsess over polish, performance, and responsiveness across the product Ship to production daily with Next.js; use AI tools heavily to build and iterate Who you are Track record of shipping polished, production frontend Expert with Next.js/React and TypeScript Real product and design sensibility, you sweat the details Care deeply about developer experience for technical users Self‑directed and thrive with real ownership on a small team Nice to have Experience with real‑time interfaces Interest in AI agents, APIs, and developer tools Details Compensation $150K–$220K + equity Stage YC W26, Seed Reports to Founders directly #J-18808-Ljbffr
- ...About the Role You’ll be one of the first two founding engineers setting the technical culture for a fast-growing team. The company has seen... ...the product Handle the full spectrum of early‑stage work: frontend bugs, database migrations, customer debugging, and infrastructure...Front endFull timeRemote work
- ...for specs. You need to be a full‑stack engineer, an AI engineer, and a product engineer... ...Stack is Go Backend, Vite (Typescript) Frontend Talk to users. Understand their pain. Scope... ...will have A seat at the table. This is a founding role. You'll shape the product and the...Front end
- ...for specs. You need to be a full-stack engineer, an AI engineer, and a product engineer... ...Versatility: backend-heavy but not allergic to frontend (Vite/Typescript) Thrive in ambiguity... ...who will push your growth A founding seat at the table where you'll shape the...Front end
- ...About the Role Join an early-stage startup as a Founding Engineer (Full-Stack) and take full ownership of features from concept to deployment... ...You'll Do Full-stack development: Build features across frontend (Vue.js/Nuxt) and backend (Node.js/TypeScript) to deliver end...Front endFull time
$130k - $170k
# Founding Engineer (AI/ML)San Francisco · Hybrid$130k – $170k + Equity### About this roleClera is building a recruiting marketplace and the... ...and services that expose ML capabilities to the marketplace frontend and workflows.* Establish data pipelines, evaluation, and...Front endFlexible hours- Shared Context Lab is seeking a Founding Engineer in San Francisco, United States, to work directly with the CEO and CTO in building core... ...infrastructure. The role requires strong technical skills in both frontend and backend development, with an emphasis on rapid shipping...Front end
$130k - $200k
...Founding Engineer (Frontend) Title of Role: Founding Engineer (Frontend) Location: San Francisco, onsite Company Stage of Funding: Venture-Backed Office Type: Onsite Salary: $130K-$200K Company Description We're representing a dynamic startup...Front endWork at officeLocal area- ...software products from the ground up. They’re looking for a Founding Full‑Stack Engineer to join a small, high‑calibre team working directly with... ...shipping products end‑to‑end Experience with modern backend and frontend frameworks Comfortable working in ambiguity and solving...Front end
$180k - $280k
...Founding Frontend Engineer $180,000 - $280,000 1-2% Equity + 401(k) + Benefits + Flexible PTO San Francisco, CA - On-site (5 days/week) Are you a Senior Frontend Engineer looking to join one of the strongest YC start-ups of recent batches, transforming one...Front endRelocationFlexible hours$180k - $220k
...Job Description Job Description Founding Engineer (Frontend) Location: San Francisco, CA · On-site 5 days/week Compensation: $180K–$220K base + 0.5–0.75% equity Seniority: 0–5 years frontend engineering experience Visa: Sponsorship available for exceptional...Front endH1bVisa sponsorship$200k
...network The next step is to speak to Jack. Job Title: Founding Engineer - Full Stack Salary: $200K+ TC + Equity Company... ..., React, and PostgreSQL, with a comfort level spanning from frontend components to database indexing. Scrappy Operator: Experience...Front end- ...About the Role You'll operate as a founding engineer, owning problems end-to-end. This is an in-person role in San Francisco working... ...just contribute to them Move across the stack as needed - frontend, backend, infrastructure, and AI Example problems you might...Front end
- ...development, setting the standard from frontend experience to backend reliability Define... ...founders to co‑create both product and engineering direction What We’re Looking For Proven... ...calling systems Early‑stage startup or founding engineer experience Familiarity with cloud...Front end
$130k - $160k
...Job Description Founding Engineer (AI / Full Stack) San Francisco, USA (Relocation + Visa Sponsorship) $130,000 - $160,000 + Equity... ...You'll Have • Strong full-stack engineering experience (frontend + backend) • Experience building and shipping production...Front endWork at officeRelocationVisa sponsorship- ...of the brightest minds in the industry. About The Role As a Founding Engineer at Mentum, you’ll have the chance to shape the future of our... ...Development: Write high-impact code across the stack—backend, frontend, and ML pipelines. Optimize AI Workflows: Advance our LLM...Front endWork at officeShift work
- ...-residence at the iconic design and innovation firm, IDEO. Founding Engineer To make this future possible, we’re hiring our first engineer... ...close What we’re looking for Strong technical skills Frontend: React/NextJS/TypeScript; component-driven development, performance...Front end
$200k
We’re looking for a highly ambitious Founding Engineer to join a fast-growing AI startup building the next generation of developer workflows... ...building and shipping product features end-to-end across frontend, backend, and infrastructure. Beyond coding, you’ll regularly...Front endFull time- ...special here. We're looking for talented engineers from the US who are excited about the... ...but also Terraform and building out our frontend in HTMX. All the good practices you'd expect... ...bring a great cadence to work. As a Founding Engineer there will definitely be times...Front endWork at officeRemote workWork from homeRelocationVisa sponsorshipWork visaRelocation packageFree visaSkilled worker visaFlexible hours
$150k - $200k
...Description Job Description The Opportunity As a founding full-stack software engineer at Seekeasy, you’ll shape the products that get into the... ...Proficiency with React (Next.js or Vite) and associated frontend technologies. Proficiency in Python, Git, and...Front endLive inWork at officeFlexible hours$120k - $250k
...A YC-backed enterprise AI SaaS startup is looking for a Founding Engineer to join their small, high-output team in San Francisco. The... ...full-stack when needed (Go backend, Vite + React + TypeScript frontend) Champion AI-first development practices — coding agents,...Front end$175k - $200k
...stage, Y Combinator-backed AI marketing automation startup as a Founding Engineer (Full-Stack). You'll be one of the first engineers on the... ...Own end-to-end feature development across the full stack: frontend (Vue.js/Nuxt), backend (Node.js/TypeScript), and AI agent integrations...Front endFull timeWork at officeRelocationVisa sponsorshipRelocation package- We’re hiring a Founding Full-Stack Engineer to join our team! This role is full-time in San Francisco at our Presidio office. Gauge helps companies... ...from 0 → 1 have broad experience across the stack (frontend, backend, databases, queues) use AI coding tools effectively...Front endFull timeWork at officeImmediate startShift work
$200k
...market investing. As a Senior Software Engineer on Meridian, you’ll own the technical design... ...through launch and iteration. This is a founding engineer role on a zero-to-one product... ...1 environment Full-stack generalist or frontend specialist with working proficiency...Front endWork at office2 days per week$145k - $195k
The Role We’re hiring our first Founding Engineer — someone who will work alongside the founder to build Multifactor’s platform from the ground... ...(APIs, services, data stores) and can build competent frontend when needed. You care about shipping the whole feature, not...Front endWork at office- ...traction, and ambitious growth plans, the company is now seeking a Founding Engineer / CTO to define and scale its entire technology function... ...Stack Languages: TypeScript, JavaScript, Python (bonus) Frontend: React, Next.js Backend: Node.js (Express/NestJS), Python (...Front endRemote work
- Founding Engineer (Full Stack) Location: San Francisco Bay Area Type: Full-Time Compensation: Competitive salary + meaningful equity (founding... .... You’ll be writing production code across backend and frontend, defining interfaces between components, shaping devops and...Front endFull time
$170k
...nervous system training and biofeedback therapy is seeking a Founding Engineer with the potential to grow into the CTO role. You will be... ...safe, fast daily shipping. Own full-stack decisions across frontend, backend, infrastructure, and AI-native layers. Integrate...Front endRemote work$140k - $220k
...clinician workflows that make great care feel effortless Role: Founding Engineer - AI‑Native Mental Health Care (In‑Person in SF) I’m hiring... ...js, TypeScript, Supabase (Postgres), AWS (ECS, Lambda, S3) Frontend: Next.js 15 (App Router), Tailwind, Vercel AI: OpenAI,...Front endFull timeFor contractorsLive inVisa sponsorshipFlexible hours$130k - $160k
...USA (HQ) - no other offices specified Founded / Size: Funding Stage: Pre‑seed (~US $3... ...days/week), office‑first, founders and engineers share a hacker‑house style setup, rapid... ...Profile Must‑haves Full‑stack development (frontend & backend) Experience with production systems...Front endContract workLive inWork at officeRemote workRelocationVisa sponsorshipFree visaFlexible hours- ...A dynamic technology company is looking for a skilled full-stack engineer to architect and build both frontend and backend systems for their enterprise workflow automation platform. You will integrate AI models, define technical strategies, and collaborate with customers...Front end
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