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Junior Full Stack Engineer Jobs in California (NOW HIRING)

Krew Research

Full Stack Engineer

San Francisco, CA · On-site

$150K - $250K/yr

We're looking for a (Human) Member of Technical Staff specializing in full-stack engineering. We're seeking sharp engineers who value high-quality code, thrive in collaborative teams, and are excited ...

Cybercoders

Full-Stack Engineer

Irvine, CA · On-site +1

$90K - $135K/yr

Full Stack Software Engineer - Irvine, CA (Hybrid) Salary: $90,000-$135,000/year Requirements: 3-6 years of full stack engineering experience, C# .NET, React or Vue.js, SQL, AWS, daily use of AI ...

Krew

Full Stack Engineer

San Francisco, CA · On-site

$150K - $250K/yr

We're looking for a (Human) Member of Technical Staff specializing in full-stack engineering. We're seeking sharp engineers who value high-quality code, thrive in collaborative teams, and are excited ...

CyberCoders

Full-Stack Engineer

Irvine, CA · On-site

$90K - $135K/yr

Full Stack Software Engineer - Irvine, CA (Hybrid) Salary: $90,000-$135,000/year Requirements: 3-6 years of full stack engineering experience, C# .NET, React or Vue.js, SQL, AWS, daily use of AI ...

Hotplate, Inc

Full Stack Engineer

San Francisco, CA · On-site

$165K - $185K/yr

The role As a full stack engineer at Hotplate, you'll build end-to-end features that will directly impact how thousands of chefs' and bakers' businesses run their businesses. You'll get to stretch ...

Jobsbridge

Full Stack Engineer

Los Angeles, CA

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers/architects, we have them all. - Bachelor's degree in Computer Science or Engineering or equivalent ...

Jobsbridge

Full Stack Engineer

Los Angeles, CA · On-site

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers/architects, we have them all. - Bachelor's degree in Computer Science or Engineering or equivalent ...

David AI

Full Stack Engineer

San Francisco, CA

About this role As a Full Stack Engineer at David AI, you'll build cutting-edge tools that help our users make sense of the audio data they'll use to train their models, working closely with ...

David AI

Full Stack Engineer

San Francisco, CA · On-site

$170K - $240K/yr

About this role As a Full Stack Engineer at David AI, you'll build cutting-edge tools that help our users make sense of the audio data they'll use to train their models, working closely with ...

Saxon Global

Full Stack Engineer

Sunnyvale, CA · On-site

Full Stack Engineer Location: Sunnyvale, CA Duration: 6 week contract Interview: Phone and Skype ... junior engineers to provide guidance as to best practices in web development. This position will ...

Cypress HCM

Senior Full Stack Engineer

San Jose, CA · Hybrid

$88/hr

Senior Full Stack Engineer Job Details * Senior Full Stack Engineer (Contract) * Location: San Jose CA 95110 (Hybrid) * Duration: 9/15/2025 to 3/13/2026 * Team: US Solutions Enablement Key ...

Nash, Inc.

Full Stack Engineer

San Francisco, CA · On-site

Full Stack Engineer San Francisco / Hybrid/Remote About Nash Logistics is the substrate beneath every economy that has ever existed, and it remains the least intelligently coordinated activity in the ...

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All JobsFull Stack Engineer JobsJunior Full Stack Engineer JobsJunior Full Stack Engineer Jobs in California

Junior Full Stack Engineer information

See California salary details

$45.9K

$93.3K

$140.1K

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

As of Jul 16, 2026, the average yearly pay for junior full stack engineer in California is $93,304.00, according to ZipRecruiter salary data. Most workers in this role earn between $72,000.00 and $94,200.00 per year, depending on experience, location, and employer.

What is a Junior Full Stack Engineer?

A Junior Full Stack Engineer is an entry-level software developer who works on both the front-end and back-end of web applications. They are typically responsible for building, testing, and maintaining features across the entire technology stack, often under the supervision of more experienced engineers. Juniors work with languages and frameworks such as JavaScript, HTML, CSS, Node.js, and databases like SQL or MongoDB. While they may not have deep expertise yet, they are expected to learn quickly, collaborate with team members, and gradually take on more complex tasks.

How does a Junior Full Stack Engineer typically collaborate with other team members on a project?

As a Junior Full Stack Engineer, you’ll regularly work alongside front-end and back-end developers, designers, and product managers to deliver features and resolve issues. Collaboration often includes participating in daily stand-ups, code reviews, and sprint planning sessions. You’ll be expected to communicate progress and challenges clearly, seek guidance when needed, and contribute to shared code repositories using version control tools like Git. This collaborative environment helps you learn quickly and build strong relationships within a multidisciplinary team.

What is the difference between Junior Full Stack Engineer vs Junior Front End Developer?

AspectJunior Full Stack EngineerJunior Front End Developer
Required SkillsProficiency in both front-end and back-end technologies (HTML, CSS, JavaScript, server-side languages, databases)Strong skills in HTML, CSS, JavaScript, and front-end frameworks (React, Angular, Vue)
Work EnvironmentWorks on both client-side and server-side development, often in full project cyclesFocuses primarily on user interface and user experience development
Common UsageUsed in startups and small to medium companies requiring versatile developersCommon in companies emphasizing UI/UX and front-end design

The main difference is that a Junior Full Stack Engineer handles both front-end and back-end tasks, while a Junior Front End Developer specializes in user interface development. The full stack role requires knowledge of server-side technologies, whereas the front-end role focuses on creating engaging user experiences.

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

To thrive as a Junior Full Stack Engineer, you need a solid understanding of front-end and back-end development concepts, programming languages like JavaScript, HTML, CSS, and familiarity with frameworks such as React and Node.js, often supported by a bachelor's degree in computer science or related experience. Experience using version control systems like Git, basic database management (SQL/NoSQL), and cloud platforms is typically required. Strong problem-solving, teamwork, and communication skills help you collaborate effectively and adapt to fast-changing project needs. These abilities are essential for building reliable, scalable web applications and contributing meaningfully to development teams.
What are the most commonly searched types of Full Stack Engineer jobs in California? The most popular types of Full Stack Engineer jobs in California are:
What cities in California are hiring for Junior Full Stack Engineer jobs? Cities in California with the most Junior Full Stack Engineer job openings:
Junior Full Stack Engineer jobs near you
Infographic showing various Junior Full Stack Engineer job openings in California as of July 2026, with employment types broken down into 92% Full Time, 4% Part Time, 1% Temporary, and 3% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $93,304 per year, or $44.9 per hour.

Full Stack Engineer

Krew Research

San Francisco, CA • On-site

$150K - $250K/yr

Full-time

Posted 26 days ago

Job description

Krew is on a mission to transform credit-servicing with the industry's most advanced AI credit-servicing agents.
We are backed by Long Journey Ventures (Arielle Zuckerberg, Pascal Levy-Garboua), and strategic angels including Ryan Hoover (Founder, Product Hunt), Charlie Songhurst (Board Member, Meta), and Michael Jones (Former Chair, Huntington Bank Ventures).
We are a talent dense team comprising of ex-Figure Robotics, Optiver, Artificial Analysis, Bain, the United Nations, UChicago, and Oxford engineers and researchers.
Our omnichannel agents are supporting >100,000 consumers on their pathways to financial wellness. And we're just getting started - our goal is to resolve more than $1 trillion in outstanding consumer delinquencies worldwide with an empathetic, human-centric approach to financial wellness.
Job Description:
We're looking for a (Human) Member of Technical Staff specializing in full-stack engineering. We're seeking sharp engineers who value high-quality code, thrive in collaborative teams, and are excited by rapid innovation.
Job Responsibilities:
  • Design and build frontend interfaces using Next JS
  • Design and build backend APIs and services that power our AI agents and operations tooling using Python (FastAPI)
  • Ship user-facing features end-to-end (from data model to API to UI)
  • Improve reliability, observability, and performance across the stack
  • Collaborate closely with design, ops, and risk/compliance to ship safe, compliant features
  • Write tests, enforce code quality, and participate in design/review discussions
  • Help evolve our engineering standards and product development process

Minimum Qualifications:
  • At least 2 years of full time professional, non-internship experience in full-stack engineering
  • Experience with backend development (Python, Go)
  • Strong code quality habits (testing, reviews, docs) and a product mindset

Preferred Qualifications:
  • Experience in FinTech, Risk Management, or Compliance is beneficial but not mandatory
  • Experience with LLM/AI-powered products, event-driven systems, or data pipelines
  • Security, privacy, and auditing best practices
  • Bonus points if you were an ex-founder

Apply