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Backend Full Stack Engineer Jobs in California (NOW HIRING)

Purple Unicorn

Full-Stack Engineer

San Francisco, CA · On-site

$120K - $150K/yr

Purple Unicorn, on behalf of SalesPatriot , is hiring an Full Stack Engineer . Non-negotiable: ALL ... Backend-leaning fullstack role using Svelte/Typescript/Postgres. * Design, develop, and maintain ...

Stellar IT Group

Full Stack Engineer

Fremont, CA · On-site

Overview: Mid-Level Full Stack Engineer 6+ months (CTH) Fremont, CA (ONSITE) Core Technical ... Proven experience in C# / .NET back-end development for production systems. * Strong Angular ...

Purple Unicorn

Full-Stack Engineer

San Francisco, CA

$120K - $150K/yr

Purple Unicorn, on behalf of SalesPatriot , is hiring an Full Stack Engineer . Non-negotiable: ALL ... Backend-leaning fullstack role using Svelte/Typescript/Postgres. * Design, develop, and maintain ...

Campfire

Full Stack Engineer

San Francisco, CA · On-site

Responsibilities : • Join our engineering team as a full-stack or back-end developers at Campfire, you'll be the architect behind building our mission-critical software to delight our customers.

IQUASAR LLC

Full Stack Engineer

San Diego, CA · On-site

Maintain and enhance existing full-stack applications (backend, frontend, DevOps and data layers) that combine AI, data analytics, and spatiotemporal big data. * Collaborate with iQuasar software ...

iQuasar LLC

Full Stack Engineer

San Diego, CA · On-site

Maintain and enhance existing full-stack applications (backend, frontend, DevOps and data layers) that combine AI, data analytics, and spatiotemporal big data. * Collaborate with iQuasar software ...

Ariston Tek Inc

Java Full Stack Engineer

Sunnyvale, CA · On-site

$61.50 - $79.50/hr

Java Full Stack Engineer Location: Sunnyvale, CA Duration: 12+ months Required Skills: Front end: CSS (web page layouts) AngularJS JQuery Javascript Backend: Spring Framework Java JPA Frameworks ...

Ariston Tek Inc

Java Full Stack Engineer

Sunnyvale, CA · On-site

$61.50 - $79.50/hr

Java Full Stack Engineer Location: Sunnyvale, CA Duration: 12+ months Required Skills: Front end: • CSS (web page layouts) • AngularJS • JQuery • Javascript Backend: • Spring Framework • ...

Wheelhouse

Full Stack Engineer

San Francisco, CA · On-site +1

You will be joining a team that includes other front-end engineers, a designer, and backend-leaning full-stack engineers. Your role will be to elevate the quality of our interface, ensuring that our ...

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All JobsBackend Full Stack Engineer JobsBackend Full Stack Engineer Jobs in California

Backend Full Stack Engineer information

What is a backend full stack engineer?

A Backend Full Stack Engineer is a software developer who specializes in building and maintaining the server-side logic, databases, and APIs of an application, while also having proficiency in front-end technologies. They are capable of working on both the backend and frontend parts of web applications, allowing them to develop end-to-end features and ensure seamless integration between the client and server sides. This role requires strong knowledge of programming languages such as JavaScript (Node.js), Python, or Java, as well as familiarity with databases, server architectures, and various web frameworks. Backend Full Stack Engineers often collaborate with designers, frontend developers, and other stakeholders to deliver complete and functional products.

How does a backend full stack engineer typically collaborate with frontend developers and other team members?

Backend Full Stack Engineers frequently work alongside frontend developers, product managers, and QA engineers to deliver seamless user experiences. They are responsible for building and maintaining server-side logic and APIs, ensuring data flows efficiently between the backend and frontend. Effective communication is essential, as they must align backend functionality with frontend requirements and participate in code reviews, sprint planning, and troubleshooting sessions. This collaborative environment fosters learning and often provides opportunities to contribute across the tech stack, enhancing both technical and interpersonal skills.

What are the key skills and qualifications needed to thrive as a backend full stack engineer?

To thrive as a Backend Full Stack Engineer, you need strong proficiency in server-side languages (such as Node.js, Python, or Java), database management, and a solid understanding of front-end technologies, usually supported by a degree in computer science or related experience. Familiarity with frameworks (like Express, Django, or Spring), version control systems (like Git), and cloud platforms (such as AWS or Azure) is typically required. Effective problem-solving, communication, and teamwork skills help you collaborate across disciplines and deliver robust solutions. These skills ensure scalable, maintainable applications and seamless integration between backend and frontend systems, which are critical for organizational success.

What is the difference between Backend Full Stack Engineer vs Frontend Developer?

AspectBackend Full Stack EngineerFrontend Developer
Primary FocusDeveloping server-side logic, databases, and APIsDesigning and implementing user interface and client-side features
Required SkillsProgramming languages like Python, Java, Node.js; databases; server managementHTML, CSS, JavaScript; frameworks like React or Angular
Work EnvironmentOften involved in both front-end and back-end tasks, collaborating across teamsPrimarily focused on client-side development, UI/UX design

While both roles require strong programming skills, Backend Full Stack Engineers handle both server-side and client-side development, whereas Frontend Developers focus mainly on creating engaging user interfaces. Understanding these differences helps employers and job seekers target the right skills and responsibilities for each role.

What are popular job titles related to Backend Full Stack Engineer jobs in California? For Backend Full Stack Engineer jobs in California, the most frequently searched job titles are:
What job categories do people searching Backend Full Stack Engineer jobs in California look for? The top searched job categories for Backend Full Stack Engineer jobs in California are:
What cities in California are hiring for Backend Full Stack Engineer jobs? Cities in California with the most Backend Full Stack Engineer job openings:
Backend Full Stack Engineer jobs near you
Infographic showing various Backend Full Stack Engineer job openings in California as of August 2026, with employment types broken down into 88% Full Time, 5% Part Time, 2% Temporary, and 5% Contract. Highlights an 86% Physical, 5% Hybrid, and 9% Remote job distribution.

Full-Stack Engineer

Purple Unicorn

San Francisco, CA • On-site

$120K - $150K/yr

Full-time

Medical, Retirement, PTO

Re-posted 22 days ago

Job description

Purple Unicorn, on behalf of SalesPatriot, is hiring an Full Stack Engineer.

Non-negotiable: ALL ROLES ARE ON-SITE IN SAN FRANCISCO. IN ORDER TO BE CONSIDERED YOU MUST BE LOCAL OR WILLING TO MOVE

*** Must be authorized to work in the US***

The Mission

America's industrial base runs on systems built in the 1980s.

Billions of dollars in critical components (F-35 parts, industrial assemblies, electronics, bolts, and hoses) still move through email threads, excel sheets, and disconnected ERPs.

We're replacing that with an AI-native platform that makes defense, aerospace, and industrial supply-chain operations nearly autonomous. Faster quoting. Faster procurement. Full visibility. Real operational intelligence for the companies our nation depends on.

Quick Facts
  • YC W25 company. Top 5% growth in batch
  • Raised $10M+ from investors including Paul Graham, SV Angel, Pear VC, and CRV
  • Team of 20 co-live in our SF & Warsaw Hacker Houses
  • 7 figure ARR transacting ~$50M a week through our system
The Role

Our Full Stack Engineers work closely with other engineers on the platform team and customer-facing forward deployed teams to design, build, and maintain robust full-stack systems that integrate with complex legacy environments and support high-value, high-impact supply chain systems.

  • Full time, in-person in SF. This is not a remote role.
  • Backend-leaning fullstack role using Svelte/Typescript/Postgres.
  • Design, develop, and maintain full-stack application functionality, including:
  • Organize, keep track of, and deliver multiple projects in parallel
What We're Looking For
  • Absolute grinder. Interested in co-living (though not required).
  • Comfortable with ambiguity and rapid change.
  • Track record of shipping fast.
  • Experience architecting systems independently
  • Motivated by taking an unknown problem, sinking your teeth in, and coming up with a plan of attack.
  • Experience in shipping projects and products. Be ready to show us at least one full-stack project (GitHub repo / web app / Loom demo video).
  • Proficiency in TypeScript, JavaScript, and at least one frontend library (React, Svelte, Next etc).
  • Knowledge of SQL databases, preferably Postgres.
  • Proficiency in writing, optimizing, and troubleshooting complex SQL queries for data extraction, transformation, and integration.
  • Strong understanding of software engineering best practices, including version control, testing, and documentation
  • Ability to work effectively in fast-paced, high-accountability environments
  • Low ego, curiosity, and intellectual honesty - focused on outcomes, not being right"

Salary & Benefits

  • $120-$150K
  • Medical (Partially paid)
  • PTO
  • 401K pending