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Founding Full Stack Engineer Jobs in Castro Valley, CA

EQL Tech

Founding Full-Stack Engineer

Burlingame, CA

$180K - $240K/yr

Founding Full-Stack Engineer On-site Engineering, Product & Tech Full time San Francisco, California, United States Our client is a stealth, seed-stage startup building an AI-powered wearable ...

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 ...

Notch

Founding Full-stack engineer

San Mateo, CA · On-site

As the founding full-stack engineer, you will build AI-forward user interfaces, fine-tune LLMs, and architect robust backend infrastructure to support the company's vision. Responsibilities : • ...

Clera

Founding Full Stack Engineer

San Francisco, CA · On-site

$135K - $155K/yr

As a Founding Full Stack Engineer , you'll own architecture and implementation across multiple integrated products. You'll design the core infrastructure, data models, and AI-driven workflows that ...

Clera

Founding Full Stack Engineer

San Francisco, CA · On-site

$135K - $155K/yr

As a Founding Full Stack Engineer , you'll own architecture and implementation across multiple integrated products. You'll design the core infrastructure, data models, and AI-driven workflows that ...

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 ...

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 ...

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 ...

Gauge

Founding Engineer

San Francisco, CA · On-site

They are seeking a Founding Full-Stack Engineer to work on various components of their system, improving the product and scalability while delivering features that enhance customer experience.

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Showing results 1-20

All JobsFounding Full Stack Engineer JobsFounding Full Stack Engineer Jobs in Castro Valley, CA

Founding Full Stack Engineer information

See Castro Valley, CA salary details

$51.4K

$155.5K

$219.8K

How much do founding full stack engineer jobs pay per year?

As of Aug 6, 2026, the average yearly pay for founding full stack engineer in Castro Valley, CA is $155,515.00, according to ZipRecruiter salary data. Most workers in this role earn between $128,100.00 and $182,300.00 per year, depending on experience, location, and employer.

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?

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 job categories do people searching Founding Full Stack Engineer jobs in Castro Valley, CA look for? The top searched job categories for Founding Full Stack Engineer jobs in Castro Valley, CA are:
What cities near Castro Valley, CA are hiring for Founding Full Stack Engineer jobs? Cities near Castro Valley, CA 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 Castro Valley, CA as of August 2026, with employment types broken down into 92% Full Time, 2% Part Time, and 6% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $155,515 per year, or $74.8 per hour.

Founding Full Stack Engineer

Oraapps Inc

Mountain View, CA • On-site

Other

Posted 8 days ago

Job description

Job Title: Founding Full Stack Engineer

Job Location: Mountain View, CA, Onsite

Job Type: Full-Time

Very Important:

  • California-based candidates strongly preferred (SF Bay Area ideal)
  • 5–7 years of Full Stack Software Engineering experience required
  • Experience at an early-stage VC-backed startup (Seed to Series B) is mandatory
  • Experience at a large technology company (Google, Meta, etc.) is highly preferred
  • Strong Python/FastAPI and React experience required
  • BS/MS in Computer Science, Engineering, or related technical field required
Must Have:
  • 5–7 years of Full Stack Software Engineering experience
  • Python
  • FastAPI
  • React (or equivalent modern frontend framework)
  • REST API development
  • Backend development
  • End-to-end product ownership
  • Early-stage VC-backed startup experience (Seed to Series B)
  • Experience building customer-facing SaaS products
  • Strong communication and enterprise customer interaction
  • Applied AI experience or strong interest
  • Product architecture and system design
  • Ability to work independently in a fast-paced startup
Preferred:
  • Experience at Google, Meta, or another leading technology company
  • AI agent or workflow development
  • Cloud platforms (AWS/Google Cloud Platform/Azure)
  • Enterprise SaaS
  • Product strategy experience
  • Demonstrated career progression/promotions
  • Customer-facing engineering
  • Startup founding or early employee experience

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