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Junior Full Stack Software Developer Jobs in California

Fuser

Jr. Full Stack Engineer

Los Angeles, CA · On-site

$70K - $90K/yr

You'll join early as our Junior Full Stack Engineer, working alongside our team to help ship ... Familiarity with creative or AI-driven software * Contributions to open-source projects

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 ...

Advantech

Sr. Full Stack Software Developer

Milpitas, CA · On-site

$110K - $135K/yr

Senior Full Stack Software Developer Location(s): Milpitas, CA Compensation: $110,000 - $135,000 About this position Advantech is seeking a Senior Full Stack Developer to help modernize and scale our ...

Advantech USA

Sr. Full Stack Software Developer

Milpitas, CA · On-site +1

$110K - $135K/yr

Senior Full Stack Software Developer Location(s): Milpitas, CA Compensation: $110,000 - $135,000 About this position Advantech is seeking a Senior Full Stack Developer to help modernize and scale our ...

MedImpact

Full Stack Software Engineer I

San Diego, CA

$42.50 - $53.52/hr

Full Stack Software Engineer Business Unit: 1200 Information Technology Prepared Date: 5/20/2025 Summary The Full Stack Software Engineer position works within the Application Development & Support ...

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All JobsFull Stack Software Developer JobsJunior Full Stack Software Developer JobsJunior Full Stack Software Developer Jobs in California

Junior Full Stack Software Developer information

See California salary details

$23.7K

$87.8K

$135.7K

How much do junior full stack software developer jobs pay per year?

As of Aug 19, 2026, the average yearly pay for junior full stack software developer in California is $87,810.00, according to ZipRecruiter salary data. Most workers in this role earn between $66,100.00 and $85,900.00 per year, depending on experience, location, and employer.

What does a junior full stack software developer do?

A Junior Full Stack Software Developer is responsible for assisting in the design, development, and maintenance of both front-end and back-end components of web applications. They work with various programming languages, frameworks, and databases to build and support software solutions. Typically, they collaborate with senior developers and other team members to learn best practices, resolve bugs, and implement new features. This role is ideal for those who have foundational programming knowledge and are looking to gain hands-on experience across the entire software development stack.

What are the key skills and qualifications needed to thrive as a junior full stack software developer?

To excel as a Junior Full Stack Software Developer, you need a solid understanding of programming languages (such as JavaScript, Python, or Java), front-end and back-end frameworks, and a relevant degree or coding bootcamp experience. Familiarity with tools like Git, databases (e.g., SQL, MongoDB), and cloud platforms, as well as knowledge of agile methodologies, is typically expected. Problem-solving ability, eagerness to learn, and effective teamwork are standout soft skills in this role. These skills and qualities ensure you can build, maintain, and improve applications efficiently while collaborating well within a development team.

What are some typical daily tasks and collaboration expectations for a junior full stack software developer?

As a Junior Full Stack Software Developer, your daily tasks often include writing and testing code for both front-end and back-end components, debugging issues, and participating in code reviews. You’ll regularly collaborate with other developers, designers, and sometimes product managers during stand-up meetings or sprint planning sessions to ensure alignment on project goals. It's common to work under the guidance of senior developers while learning best practices and receiving constructive feedback. This collaborative environment not only helps you grow technically but also improves your communication and teamwork skills.

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

AspectJunior Full Stack Software DeveloperJunior 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)
Work EnvironmentInvolved in both client-side and server-side development, often in full project cyclesPrimarily focused on user interface and client-side features
Common UsageUsed in roles requiring versatile development across the stackUsed in roles specializing in UI/UX and front-end design

The main difference is that a Junior Full Stack Software Developer works on both front-end and back-end tasks, while a Junior Front End Developer focuses solely on the user interface and client-side development. The full stack role requires broader skills, whereas the front-end role specializes in creating engaging user experiences.

What are the most commonly searched types of Full Stack Software Developer jobs in California?

The most popular types of Full Stack Software Developer jobs in California are:

What are popular job titles related to Junior Full Stack Software Developer jobs in California?

For Junior Full Stack Software Developer jobs in California, the most frequently searched job titles are:

What job categories do people searching Junior Full Stack Software Developer jobs in California look for?

The top searched job categories for Junior Full Stack Software Developer jobs in California are:

What cities in California are hiring for Junior Full Stack Software Developer jobs?

Cities in California with the most Junior Full Stack Software Developer job openings:

Junior Full Stack Software Developer jobs near you
Infographic showing various Junior Full Stack Software Developer job openings in California as of August 2026, with employment types broken down into 1% As Needed, 90% Full Time, 6% Part Time, and 3% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $87,810 per year, or $42.2 per hour.

Senior Full Stack Software Engineer

twenty80.io

San Francisco, CA • On-site, Remote

$160K - $210K/yr

Full-time

Medical, Dental, Vision, PTO

Re-posted 6 days ago

Job description

About the Role

A growing technology startup is hiring a Senior Full Stack Software Engineer to help build and scale its core product. This engineer will work across the frontend and backend, contributing directly to customer-facing features as well as internal systems. The role offers a high level of ownership and influence over technical decisions in a fast-paced environment.

This position is well-suited for an engineer who enjoys working closely with product and design, shipping quickly, and improving systems over time.

What You’ll Do

  • Build and maintain full stack web applications used by customers and internal teams

  • Develop scalable backend services and APIs to support product features

  • Implement modern, responsive frontend interfaces with a focus on usability and performance

  • Collaborate with product managers and designers to define requirements and deliver solutions

  • Contribute to architectural decisions and technical roadmap planning

  • Write high-quality, well-tested code and participate in code reviews

  • Help improve engineering processes, tooling, and system reliability

  • Mentor junior engineers and contribute to a strong engineering culture

Tech Environment

The engineering team works with a modern startup stack, including:

  • Frontend: React, TypeScript, Next.js

  • Backend: Node.js (Express or NestJS) and/or Python (Django or FastAPI)

  • Databases: PostgreSQL, Redis

  • Cloud & Infrastructure: AWS or GCP, Docker, CI/CD

  • APIs: REST and GraphQL

  • Tools: Git, GitHub, modern monitoring and logging tools

What We’re Looking For

  • 5+ years of professional software engineering experience

  • Strong full stack experience with modern JavaScript/TypeScript

  • Proven experience building and maintaining backend services and APIs

  • Solid understanding of relational databases and data modeling

  • Experience deploying and operating applications in cloud environments

  • Ability to work independently and take ownership of projects

  • Prior experience in a startup or fast-moving product team is a plus

Compensation & Benefits

  • Base Salary: $160,000 – $210,000 (San Francisco senior-level range)

  • Equity: Competitive equity package

  • Benefits: Medical, dental, vision coverage; flexible PTO; standard startup benefits

  • Work Model: Hybrid or remote-friendly depending on location and team needs

Equal Opportunity

This role is with an equal opportunity employer. Qualified applicants will be considered without regard to race, color, religion, gender, sexual orientation, gender identity, age, disability, or veteran status.