Founding Fullstack Engineer

3 hours ago

San Francisco, California, United States Leafpress Full time

About The Role
As a
Founding Engineer at Cardinal
, you'll help define and build the
next generation of go-to-market infrastructure
.

This is a systems-heavy role. You'll work closely with customers to understand how GTM actually breaks today, shape product direction from first principles, and design core primitives at the frontier of GTM.

Excited to have you onboard More info below:

What You'll Build

  • Core GTM orchestration systems that coordinate actions across email, LinkedIn, and future channels with strong guarantees around correctness, timing, and state
  • Distributed workflow engines for sequencing, retries, backoff, and recovery across millions of GTM events
  • AI-assisted GTM primitives that help teams decide who to reach, when, and how — not just send messages
  • Enterprise-grade infrastructure supporting real-time execution, analytics, and experimentation loops
  • Internal developer platforms & tools — debuggers, dashboards, and state visualizations that make complex GTM systems observable
  • Polished user interfaces that turn abstract system behavior into something founders and operators can reason about

We're Looking For

  • 2–6 years of experience building production systems and user-facing products
  • Strong systems thinking — you reason clearly about distributed systems, state machines, failure modes, idempotency, and performance
  • Full-stack fluency with TypeScript, React, , and modern web infrastructure
  • Comfort with ambiguity — you enjoy designing primitives before the category is fully defined
  • Product instinct — you talk to users, identify leverage points, and ship systems that change behavior
  • High agency — you don't wait for specs; you define them

Bonus Points

  • Experience with workflow engines, queues, or event-driven architectures
  • Background in growth infrastructure, messaging systems, or developer platforms
  • Familiarity with AI/LLMs, prompt design, evals, or AI-augmented UX
  • Prior experience at an early-stage startup or building category-defining tools
  • Strong opinions on how modern GTM should work — and the ability to encode them in systems

What We Offer

  • Meaningful equity in a company defining a new GTM category
  • Direct leverage — the systems you build will shape how modern companies grow
  • Fast feedback loops with founders and power users
  • Competitive compensation — $160K–$235K base + equity
  • Full benefits — health, dental, vision, unlimited PTO
  • San Francisco office — build alongside the founding team
  • Background:**\ Founders Jianna Liu and Devi Jha are Harvard and MIT alums. They were part of YC S23, where they built and sold an energy software company (Leafpress) to Johnson Controls (NYSE: JCI) — scaling revenue almost entirely through cold email and LinkedIn.

Now, Cardinal works with
YC-backed and high-growth companies
to turn GTM from guesswork into infrastructure.

We're early, opinionated, and operating at the frontier of how companies grow.

  • Founding Engineer

    2 hours ago

    San Francisco, California, United States Terac Full time

    Founding EngineerLocation: San Francisco, CA (in-person preferred) Team: Engineering (reporting to CTO Jack Blair) Stage: Seed ($9M raised from Emergence, SignalFire, Audacious, ZFellows)About TeracWe're building a search engine for human thought.While you might go to Google to search through the web, you come to Terac to search through human opinion....

  • Founding Engineer

    2 hours ago

    San Francisco, California, United States Terac Full time

    Location:San Francisco, CA (in-person preferred)Team:Engineering (reporting to CTO Jack Blair)Stage:Seed ($9M raised from Emergence, SignalFire, Audacious, ZFellows)About TeracWe're building asearch engine for human thought.While you might go to Google to search through the web, you come toTeracto search throughhuman opinion. Consumer research teams at...

  • Founding Fullstack Engineer

    3 hours ago

    San Francisco, California, United States Cardinal Full time

    About the roleAs a Founding Engineer at Cardinal, you'll help define and build the next generation of go-to-market infrastructure.This is a systems-heavy role. You'll work closely with customers to understand how GTM actually breaks today, shape product direction from first principles, and design core primitives at the frontier of GTM.Excited to have you...

  • Senior Fullstack Engineer

    34 minutes ago

    San Francisco, California, United States Kikoff Full time

    We're looking for aFullstack Engineerto join theGrowth & Monitization Teambehind our flagship credit-building product — one that's already driving measurable, large-scale impact for our users and our business.This isn't about chasing vanity metrics or running random A/B tests. The team is ourengine of impact— rapidly testing, iterating, and shipping...

  • Senior Fullstack Engineer

    1 hour ago

    San Francisco, California, United States Kikoff Full time

    We're looking for a Fullstack Engineer to join the Growth & Monitization Team behind our flagship credit-building product — one that's already driving measurable, large-scale impact for our users and our business.This isn't about chasing vanity metrics or running random A/B tests. The team is our engine of impact — rapidly testing, iterating, and...

  • Founding Full Stack Engineer

    1 hour ago

    San Francisco, California, United States D24 Search Full time

    Founding Full Stack Engineer (Python/ React/TypeScript)VC backed AI Start UpSan Francisco, CAUp to $250K + EquityWe're building the AI co-scientist for the physical world, to accelerate breakthroughs in semiconductors, batteries, advanced materials, specialty chemicals, aerospace, and beyond. These industries represent trillions in R&D spend, but are still...

  • Software Engineer, Fullstack

    2 hours ago

    San Francisco, California, United States Eventual Full time

    About EventualEvery breakthrough AI application, from foundation models to autonomous vehicles, relies on processing massive volumes of images, video, and complex data. But today's data platforms (like Databricks and Snowflake) are built on top of tools made for spreadsheet-like analytics, not the petabytes of multimodal data that power AI. As a result,...

  • Fullstack Software Engineer

    3 hours ago

    San Francisco, California, United States Angle Health Full time $100,000 - $200,000

    Changing Healthcare For GoodAt Angle Health, we believe the healthcare system should be accessible, transparent, and easy to navigate. As an AI-native, integrated healthcare company, we are replacing legacy systems with modern infrastructure to deliver members and patients the care they need when they need it. If you want to build the future of healthcare,...

  • Full Stack Engineer

    55 minutes ago

    San Francisco, California, United States Tenex Engineer Full time

    Full Stack Engineer (AI Clinical Agents / Voice & Agentic Systems)Menlo Park, CA (Hybrid)| $150K–$170K + Competitive Equity (0.7%–1.1%)| Visa sponsorship not availableWe're partnered with an early-stage health-tech startup building AI clinical agents for end-to-end care delivery—from patient intake to post-visit documentation. The goal: deploy...

  • Founding Engineer

    1 hour ago

    San Francisco, California, United States 1821 Talent Group Full time

    The Role: Founding Engineer (Stealth & Pre-Seed)1821 Talent Group is a direct placement firm representing a curated portfolio of high-growth technology startups in the Bay Area. We specialize in connecting "Ex-FAANG" caliber engineering talent with Seed and Series A companies building their core product teams.We are currently pipelining Senior and Staff...