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Founding Full Stack Engineer Jobs in California (NOW HIRING)

twenty80.io

Founding Full Stack Engineer

San Francisco, CA · On-site +1

$150K - $190K/yr

About the Role An early-stage startup is hiring a Founding Full Stack Engineer to help build its product from the ground up. This role will work closely with the founding team to design, develop, and ...

Clera

Founding Full Stack Engineer

San Francisco, CA · On-site

$180K - $230K/yr

... Founding Engineer. You'll join the CTO as a core member of a tiny, high-caliber team and help set ... You'll own problems across the full stack, from LLM orchestration to embeddable frontend widgets to ...

Clera

Founding Full Stack Engineer

San Francisco, CA · On-site

$180K - $230K/yr

... Founding Engineer. You'll join the CTO as a core member of a tiny, high-caliber team and help set ... You'll own problems across the full stack, from LLM orchestration to embeddable frontend widgets to ...

Weekday

Founding Full-Stack Engineer

San Francisco, CA · On-site

Early hire / founding engineer Why This Role Exists You'll help build the core product from the ground up. This is a hands-on role for someone who loves shipping, thrives in ambiguity, and wants ...

Weekday

Founding Full-Stack Engineer

San Francisco, CA · On-site

Early hire / founding engineer Why This Role Exists You'll help build the core product from the ground up. This is a hands-on role for someone who loves shipping, thrives in ambiguity, and wants ...

Fennel AI

Founding Full Stack Engineer

Menlo Park, CA · On-site

Ability to independently develop, own and execute on a roadmap * 2+ years of industry experience as a software engineer with full-stack experience * Curiosity to work in a new field - previous ...

Seekeasy

Founding Engineer, Full-stack

San Francisco, CA · On-site

$150K - $200K/yr

The Opportunity As a founding full-stack software engineer at Seekeasy, you'll shape the products that get into the hands of our customers. You'll use the latest advancements in AI, including ...

Fennel AI

Founding Full Stack Engineer

Menlo Park, CA · On-site

Ability to independently develop, own and execute on a roadmap * 2+ years of industry experience as a software engineer with full-stack experience * Curiosity to work in a new field - previous ...

Seekeasy

Founding Engineer, Full-stack

San Francisco, CA · On-site

$150K - $200K/yr

The Opportunity As a founding full-stack software engineer at Seekeasy, you'll shape the products that get into the hands of our customers. You'll use the latest advancements in AI, including ...

Truth Systems

Founding Full-Stack Engineer

San Francisco, CA · On-site

$120K - $250K/yr

... full cycle, from idea/client discovery to rollout. Feature outcomes are measured via adoption and direct client feedback. * Reliable, secure, accurate, and fast engineering: With the stakes that we ...

Fabrion

Founding Engineer

Bodega Bay, CA · On-site

Founding Engineer (Full Stack) Location: San Francisco Bay Area Type: Full-Time Compensation: Competitive salary + meaningful equity (founding tier) Backed by 8VC, we're building a world-class team ...

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Founding Full Stack Engineer information

What is a Founding Full Stack Engineer?

A Founding Full Stack Engineer is an early, core technical team member at a startup who is responsible for building both the front-end and back-end of the company's product. This role goes beyond typical engineering, often involving product decisions, architecture design, and collaborating directly with the founders. Founding Full Stack Engineers help shape the company's culture, technical direction, and can have significant equity stake. Their work is crucial in taking the business from idea to launch, often in a fast-paced, resource-limited environment.

What are the key skills and qualifications needed to thrive as a Founding Full Stack Engineer, and why are they important?

To thrive as a Founding Full Stack Engineer, you need expertise in both front-end and back-end development, deep knowledge of programming languages like JavaScript, Python, or Ruby, and experience with scalable architectures, often backed by a degree in computer science or equivalent experience. Familiarity with frameworks (React, Node.js, Django), version control systems (Git), cloud platforms (AWS, GCP), and DevOps practices is typically required. Strong problem-solving, initiative, adaptability, and excellent communication distinguish successful candidates, enabling effective collaboration in a startup environment. These skills and qualities are crucial for building robust products rapidly and influencing the company's technical direction from its early stages.

What is the difference between Founding Full Stack Engineer vs Full Stack Engineer?

AspectFounding Full Stack EngineerFull Stack Engineer
CredentialsTypically requires proven full stack development experience, sometimes with startup or early-stage company involvementRequires relevant full stack development skills, often with formal education or certifications
Work EnvironmentEarly-stage startups or founding teams, often wearing multiple hatsEstablished companies or startups, focused on project delivery
Employer & Industry UsageFounding teams, startups, tech entrepreneursTech companies, agencies, startups, corporate IT teams

Founding Full Stack Engineers are key players in early-stage startups, often involved in building core products from scratch and shaping company technology. Full Stack Engineers work across various company sizes, focusing on developing and maintaining applications. The main difference lies in the startup environment and level of involvement in founding the company.

What unique challenges might a Founding Full Stack Engineer face when joining an early-stage startup?

As a Founding Full Stack Engineer at an early-stage startup, you'll often balance building core product features with setting up foundational technical infrastructure. This role typically requires wearing multiple hats, from architecting systems and writing code to making critical technology decisions and collaborating closely with non-technical founders. You may encounter challenges such as ambiguous requirements, shifting priorities, and limited resources, but you'll also have significant influence over the company's technical direction. The dynamic environment encourages rapid learning and offers accelerated career growth, particularly for those who thrive in fast-paced, collaborative settings.
What are popular job titles related to Founding Full Stack Engineer jobs in California? For Founding Full Stack Engineer jobs in California, the most frequently searched job titles are:
What job categories do people searching Founding Full Stack Engineer jobs in California look for? The top searched job categories for Founding Full Stack Engineer jobs in California are:
What cities in California are hiring for Founding Full Stack Engineer jobs? Cities in California with the most Founding Full Stack Engineer job openings:
Founding Full Stack Engineer jobs near you
Infographic showing various Founding Full Stack Engineer job openings in California as of June 2026, with employment types broken down into 68% Full Time, 16% Part Time, 14% Temporary, and 2% Nights. Highlights an 89% Physical, 3% Hybrid, and 8% Remote job distribution.
Founding Full Stack Engineer

Founding Full Stack Engineer

Oraapps Inc

San Francisco, CA • On-site

Other

Posted 5 days ago

Job description

Job Title: Founding Full Stack Engineer

Job Location: San Francisco, CA (Onsite)

Job Type: Full-Time

Very Important:

  • Must work onsite 5 days/week in San Francisco
  • 2–5 Years of Software Engineering Experience
  • Full Stack Development Experience Required
  • Startup or Founding Engineer Experience Mandatory
  • Experience building products end-to-end (Frontend + Backend + Mobile)
  • Experience with AI Product Integration Required
Must Have:
  • 2–5 years of Software Engineering experience
  • Full Stack Development experience
  • Experience building and shipping products end-to-end
  • Backend API and Data Layer development
  • Frontend/UI Development experience
  • Mobile Application Development (iOS, Android, or React Native)
  • Real-time Video, Streaming, or Low-Latency Systems experience
  • AI/LLM Product Integration experience
  • Experience making architecture and scalability decisions
  • Experience with modern cloud platforms (AWS, Google Cloud Platform, Supabase, Railway, etc.)
  • Strong debugging skills across frontend, backend, and devices
Preferred:
  • Founding Engineer (#1–#5 employee) experience
  • Early-stage startup experience
  • Experience at Tesla, SpaceX, Anduril, YC-backed startups, or similar environments
  • YouTube, Twitch, Cloudflare, Mux, AR/VR, Smart Glasses, or Edge ML experience
  • React Native with Native Bridges
  • Strong UX/Product Design skills
  • Competitive Programming, Olympiad, USACO, or Founder background
Keywords:

Founding Engineer, Full Stack Engineer, Product Engineer, React, React Native, Mobile Development, Backend APIs, AWS, Google Cloud Platform, Supabase, AI, LLM, Generative AI, Real-Time Video, Streaming, Low Latency, System Architecture, Startup, SaaS, Product Development, Smart Glasses, Wearables, Edge Computing.

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