Founding Engineer
Ploy
About Ploy Ploy is an agentic marketing platform that turns your website into your company's main growth engine. We deploy swarms of marketing and web design agents that monitor your site and proactively launch campaigns, content, and optimizations — giving companies the on‑demand infrastructure of a growth team. Ploy is founded by Bryant Chou, the co‑founder and former CTO of Webflow, where he spent 12+ years building the core product, CMS, and hosting that now power ~1.5% of the internet. We're a small, senior team based in San Francisco and backed by Y Combinator and other Tier 1 investors. What you'll work on Multi‑agent systems that plan, execute, and learn from websites and growth channels in production — orchestration, memory, evals, and everything it takes to keep them reliable. The infrastructure that lets those agents make changes to live sites safely at scale — previews, diffs, rollbacks, performance guardrails. The primitives and interfaces customers use to direct the agents themselves. The feedback loops that make the product get smarter about a customer's business the longer it runs. Who we're looking for You've built something from 0 to 1 and thrive in ambiguity. You're comfortable going deep on any part of the stack — frontend, backend, infra, or ML/agent systems — and have strong taste in at least one. You've worked with LLMs in production, or you're hungry to. You make good decisions fast with incomplete information, and you're honest when something isn't working. You want to work in person in San Francisco, most days, with a small team that moves quickly. If you don't match this exactly but think you'd be great here, apply anyway. We read everything. #J-18808-Ljbffr Ploy
- ...Founding Robotics Software Engineer Location: San Francisco (preferred) / US Type: Full-time · Founding Team About Bracket Bot Bracket Bot is building low-cost, general-purpose robots that developers can program and deploy in days. We’re transforming...SuggestedFull time
- ...Visa sponsorship: None available. About the Role: This is a founding hardware role, and the person who fills it owns the physical... ...hire joins the technical side alongside the CTO and lead software engineer as one of the first ten employees. The role requires someone...SuggestedFull timeVisa sponsorship
- ...from across IT and security. Several design partners today and a founding team of three. Full-Time, In-person, San Francisco, CA.... ...About the Role: This is a backend- and systems-heavy founding engineering role where "full-stack" means owning the product and system end...SuggestedFull timeH1bVisa sponsorship
$500 per month
...DESCRIPTIONThis company handles millions of calls per month and needs an engineer who has worked at that scale before and knows how to build... ...sub-100 milliseconds.You will work on-site directly with the founding team, contributing across architecture, infrastructure, and...SuggestedH1b$7.5k
...Founding GTM Engineer (Series A Fintech / EdTech) Location: San Francisco, CA or Phoenix, AZ (In-Person, Full Time) | Seniority: Founding / Senior IC | Equity: Meaningful Founding Stake The Mission: Architecting the Financial Rails for the $900B School Choice...SuggestedFull timeLive inWork at officeWork from homeRelocationVisa sponsorshipRelocation package- ...startup, revolutionizing the computing landscape, is looking to hire a Principal Product and Application Security Engineer to join their team as a founding engineer. This startup has hit a $1B valuation, closed their Series A funding, and has been around for 4 years. They...Full time
- ...technical genius. He trained the first-ever image editing AI in the world. Before Y/n, I was the founding designer at Substack. We're looking for a founding full-stack engineer to own most of the app surface and our personalized recommendations infrastructure. This is a...Relocation
$350k
...conversations consistent and personalized across all channels. Reverse engineering legacy healthcare systems that don’t have public APIs to... ...who desperately need them. We’re looking for exceptional founding engineers to help us realize this ambition. If you’re an engineer...Contract workNight shift$100k - $200k
.... Learn more at voicecursor.ai. Role Description This is a full-time, on-site role based in the San Francisco Bay Area. As a Founding Engineer, you will play a pivotal role in shaping the technical foundation of Voice Cursor. Your day-to-day responsibilities will include...Full time10 hours per weekFlexible hours- Origamics AI · Founding team · Full-time We’re hiring the first engineers to join the founders. Not employee #20. Not “early.” Founding. What we do The technology used to design boards and electronics is some of the most complex in existence, and it hasn’t changed much...Full timeImmediate start
- About The Opportunity I’m partnering with an early-stage startup that is looking for a Founding Engineer to help build and scale their platform from the ground up. This is a true 0-to-1 opportunity where you’ll have significant ownership over the product, architecture,...Full time
- ...researcher who has spent his entire career in enterprise AI, leading engineering teams from seed through Series C. The broader team includes... .... We hold a high bar of excellence that starts with the founding team. Background Deploying truly impactful AI Agents today requires...
- ...opportunity to shape how agent-led growth and developer tooling evolve in a rapidly changing ecosystem. Role Description As a Founding Engineer at Lightsage, you will design, build, and scale core infrastructure and products that power agent-led growth for developer...Full time
- About the Role You'll be a Founding Engineer at Solderable, building the core AI-assisted PCB design tooling and EDA automation platform from the ground up. This is a software-first role with deep hardware roots—you'll own everything from the design tools themselves to...
- ...the Builders Build TierZero’s mission is to accelerate software engineering. Today, engineers spend 50-70% of their time not building -... ...productivity market waiting to be reclaimed. Highlights Team : Our founding team is made up of pioneers in AI agents - staff and principal...Work at office3 days per week
- ...opportunity to make a career-defining impact Visa sponsorship As a founding member, you’ll help define the technical foundation of... ...core systems end-to-end to shaping architecture, hiring, and engineering culture. This role has a natural path toward technical leadership...Visa sponsorshipFlexible hours
- About the role Hiring a full-stack/founding engineers to join our team and focused on product engineering and shipping new features Things you'll be working on Architecting and implementing full-stack product features in Typescript/React/Node is the core of what you’ll...Work at office
- ...previously built and exited companies and held senior product and engineering roles at Meta, Airbnb, and Canva. The throughline across... ...infrastructure that bigger players take for granted. The role As Founding Engineer, you’ll build the technical foundation of that...Night shiftWeekend work
$120k - $180k
Founding Engineer - Staff/Senior Location: San Francisco, CA Type: Full-time, In-person Flowtel is building the next-generation operating system for hospitality, powered by modern AI agents that can handle everything from booking to room service. We just launched, secured...Full time- ...Role This is a foundational role: Sim is hiring our first GTM Engineer to build the company’s go-to-market and RevOps infrastructure from... ..., custom internal tools, and data-driven outbound campaigns Found and scale: Set the technical standard and shape the DNA of Sim’...Full timeWork at officeImmediate startVisa sponsorshipRelocation package
- ...connections will form the foundation of the agentic internet - and Caylex will be the infrastructure powering it. The Role As a Founding Engineer, you’ll play a central role in shaping both our product and engineering culture. You will: Work full-stack across...Full timeWork at office
- I'm recruiting for a Founding Engineer opportunity with an early-stage AI company operating at the intersection of AI, legal services and voice automation. This is the company's first engineering hire , working directly with the Founder to take an existing voice AI prototype...Relocation
$150k - $250k
AgentMail is building the identity and communication infrastructure for AI agents, starting with email. We are looking for a Founding Engineer with backend and infra focus to architect systems for agents as the end users. Responsibilities: Design APIs that are intuitive...Work experience placementInternship$200k - $250k
Overview As a Founding Engineer, you'll architect and build the core AI agents and infrastructure that power precision outbound at scale — then make them accessible through beautiful, intuitive interfaces. You'll work directly with customers, shape product direction, and...Work at office- tl;dr: This is a 1 of 1 role. We're looking for a founding engineer to work alongside a Thiel Fellow founder as employee #1 - with 5X more equity than most "founding engineers". About Empathic “…but I tell you all today, I would rather die a man than live for all eternity...InternshipWork at office
- ...building AI that helps teams uncover their best automation opportunities and build those automations. The role We are hiring a Founding Engineer to be the tip of the spear for turning Worktrace AI’s ambitious product vision into reality. In this role, you will be a key...Visa sponsorship
$130k - $200k
Founding Engineer - Full Stack (AI x Developer Tools) Location: San Francisco, CA (Hybrid - 4 days/week in person) Compensation: $130,000 - $200,000 base Equity: 0.10% - 1.75% Work Authorization: Open to visa sponsorship in exceptional cases Type: Full-time Start Date:...Full timeImmediate startVisa sponsorshipWork visa- About the Role We're looking for founding Machine Learning Engineers (MLEs) to own and improve our core action models end-to-end— the intelligence that powers Composite's proactive automation platform. You'll work at the intersection of LLM inference, browser understanding...
- Founding Engineer (Full Stack) Location: San Francisco Bay Area Type: Full-Time Compensation: Competitive salary + meaningful equity (founding tier) About the role We’re hiring a founding full stack engineer to help architect and build the platform from day one. This...Full time
- About Loop Loop AI is a San Francisco-based tech company founded in 2022. We provide a Delivery Intelligence Platform for data-driven... ...first restaurants. About The Role We are looking for a Founding Engineer with 4+ years of backend engineering experience to join our...Temporary work
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