ZipRecruiter

Log In

1

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 ...

Kodezi Inc.

Founding Full-Stack Engineer

San Francisco, CA · On-site

$160 - $210/hr

As a Founding Full-Stack Engineer, you'll lead the creation of high-impact interfaces -- from our system-level dashboard to the developer CLI. You'll work closely with design, infra, and AI teams to ...

Clera

Founding Full-Stack Engineer

San Francisco, CA · On-site

$150K - $200K/yr

About the Role We're a Y Combinator-backed EdTech startup on a mission to help people acquire languages and connect across cultures -- and we're hiring a Founding Full-Stack Engineer to join our ...

Clera

Founding Full-Stack Engineer

San Francisco, CA · On-site

$150K - $200K/yr

About the Role We're a Y Combinator-backed EdTech startup on a mission to help people acquire languages and connect across cultures - and we're hiring a Founding Full-Stack Engineer to join our small ...

Datawizz

Founding Engineer - Full Stack

San Francisco, CA · On-site

$50K - $500K/yr

The Role As a founding full-stack engineer, you'll own the application layer of our platform - from observability and permissions to the control plane and user-facing dashboards that make our agent ...

Datawizz

Founding Engineer - Full Stack

San Francisco, CA · On-site

$50 - $500/hr

The Role As a founding full-stack engineer, you'll own the application layer of our platform - from data collection and observability to the control plane and user-facing dashboards that make our ML ...

Clera

Founding Full-Stack Engineer

San Francisco, CA · On-site

$180 - $230/hr

... 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 ...

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 ...

Floot

Founding Full-Stack Engineer

San Francisco, CA · On-site

Floot is a startup looking for their first engineer to work closely with the founders in building their product and shaping the company culture. The role involves developing full-stack features ...

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 ...

next page

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 23, 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 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 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 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 91% Full Time, 6% Part Time, and 3% Contract. Highlights an 85% Physical, 6% Hybrid, and 9% Remote job distribution, with an average salary of $155,515 per year, or $74.8 per hour.

Founding Full-Stack Engineer

EQL Tech

Burlingame, CA

$180K - $240K/yr

Full-time

Posted 26 days ago

Job description

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 platform for industrial field technicians - running a real-time computer-vision and agentic AI system directly on smart-glasses hardware, live today with major data-center, energy, and industrial customers across multiple countries. Backed by a $5M seed round and founded by researchers from Harvard/NASA (computer vision, published at NeurIPS and ICCV) and MIT (machine learning, ex-quant researcher).

The bet: computer vision and agentic vision-language models (VLMs) grounded in real integrations with legacy enterprise systems (ServiceNow, SAP, Salesforce) - not another LLM wrapper. The industrial data this generates is also laying the groundwork for robotics automation down the line.

As Founding Full-Stack Engineer, you'll own the product layer end-to-end: the real-time video/data pipeline connecting wearable hardware to the AI core under tight latency budgets and unreliable connectivity, the backend APIs and data layer, and the frontend/mobile client customers actually touch.

What you'll do
  • Build and own the real-time pipeline linking wearable hardware to the AI system
  • Design and ship backend APIs and the core data layer
  • Build the frontend/mobile client customers use daily
  • Work directly with the founding team in a small, high-ownership environment
Location & culture

Fully on-site in the SF Bay Area. The founding team lives and works together for the first several months in a shared house before moving to a standard office - expect an intense, in-person, roughly 9-9-6 pace. Hours flex for exceptional, senior talent; the priority is getting the right person, not saving on salary.

Requirements

Essential

  • 2-5 years shipping scalable production systems end-to-end, ideally at an early-stage startup
  • True full-stack range: backend/API/data layer AND frontend/mobile (React, React Native with native bridges)
  • Real-time/low-latency systems experience - either streaming platforms (e.g. Twitch, YouTube, Mux, Cloudflare, Agora, LiveKit) or hardware-constrained domains (drones, robotics, autonomous driving)
  • Some exposure to hardware-constrained/on-device work

Particularly valuable

  • Real-time video specifically
  • On-device/edge experience
  • Strong front-end/UX craft
  • Has shipped an AI/LLM/agent pipeline into production

Benefits

Compensation & benefits

    • Base: $180K-$240K
    • Equity: 0.25%-0.75%
    • Visa sponsorship available (O-1, TN, E-3, H-1B1, H-1B transfer, F-1 OPT/STEM OPT)

How to apply: submit your resume and a brief note on the most real-time/latency-sensitive system you've shipped.

Apply