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Junior Mern Stack Developer Jobs in California (NOW HIRING)

Programmers.io

Java Full Stack AI Developer

Sunnyvale, CA · On-site

$61.50 - $79.50/hr

Backend - Java 17+, Spring Boot, Microservices architecture, Node.js * Frontend - Full stack MERN ... Cloud & DevOps - Kubernetes (EKS), Docker, CI/CD pipelines * Data & Messaging - PostgreSQL, Redis ...

Monitise

Sr. Full Stack Developer

Sunnyvale, CA

$140K - $210K/yr

Job Title Sr. Full Stack Developer About your role: Fiserv is a global leader in financial ... Coach and mentor junior engineers, advocate engineering best practices with a CI/CD DevOps mindset ...

Fiserv, Inc.

Sr. Full Stack Developer

Sunnyvale, CA · On-site

$140K - $210K/yr

Job Title Sr. Full Stack Developer About your role: Fiserv is a global leader in financial ... Coach and mentor junior engineers, advocate engineering best practices with a CI/CD DevOps mindset ...

Gumloop

Full Stack Software Engineer

San Francisco, CA · On-site

$185K - $250K/yr

Review PRs, share context, and mentor junior engineers to raise the bar across the team What You Bring * 2-5 years of professional experience building products as a full stack developer

New

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 features, improve performance, and learn the systems that power an AI-native creative platform. This role ...

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 features, improve performance, and learn the systems that power an AI-native creative platform. This role ...

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Junior Mern Stack Developer information

See California salary details

$23.7K

$87.8K

$135.7K

How much do junior mern stack developer jobs pay per year?

As of Aug 8, 2026, the average yearly pay for junior mern stack 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.

Is Junior Mern Stack Developer in demand in 2026?

Junior Mern Stack Developers are expected to remain in demand through 2026 due to the continued growth of web applications and the popularity of JavaScript frameworks like React, Node.js, and MongoDB. Strong skills in full-stack development, including proficiency with these tools, can improve job prospects as companies seek versatile developers for modern tech stacks.

What are the key skills and qualifications needed to thrive in the junior MERN Stack Developer position, and why are they important?

To thrive as a Junior MERN Stack Developer, you need a solid understanding of JavaScript, React.js, Node.js, Express, and MongoDB, typically supported by a relevant degree or coding bootcamp. Familiarity with version control systems like Git, Agile development practices, and basic knowledge of RESTful APIs are highly valued, while certifications in web development can enhance your candidacy. Strong problem-solving abilities, good communication skills, and a willingness to learn enable effective collaboration and growth in this role. These skills and qualities are essential for building efficient web applications and contributing successfully to dynamic development teams.

What kind of projects or tasks might a junior MERN Stack Developer typically work on?

As a Junior MERN Stack Developer, you will often be involved in building and maintaining web applications, implementing new features, and fixing bugs within the application stack. Your day-to-day work may include writing code for both front-end (using React.js) and back-end (using Node.js and Express), working with databases like MongoDB, and collaborating closely with other developers, designers, and project managers. You may also be asked to participate in code reviews, contribute to team discussions on architecture or user experience, and learn best practices for scalable and maintainable code. This hands-on experience helps you develop your technical skills and prepares you for more advanced responsibilities as your career progresses.

How much does a junior Mern Stack Developer make?

A junior MERN Stack Developer in the US typically earns between $50,000 and $80,000 annually, depending on experience, location, and company size. Entry-level developers with skills in React, Node.js, and MongoDB are often compensated within this range.

What is a junior MERN Stack Developer?

A Junior MERN Stack Developer is an entry-level software developer who specializes in building web applications using the MERN stack, which consists of MongoDB, Express.js, React, and Node.js. They assist in developing, testing, and maintaining both front-end and back-end components of web applications. Typical responsibilities include writing clean code, fixing bugs, collaborating with senior developers, and integrating APIs. Strong foundational knowledge of JavaScript, database management, and version control (e.g., Git) is essential. This role is ideal for individuals looking to gain hands-on experience and grow their skills in full-stack development.

What are the most commonly searched types of Mern Stack Developer jobs in California? The most popular types of Mern Stack Developer jobs in California are:
What are popular job titles related to Junior Mern Stack Developer jobs in California? For Junior Mern Stack Developer jobs in California, the most frequently searched job titles are:
What job categories do people searching Junior Mern Stack Developer jobs in California look for? The top searched job categories for Junior Mern Stack Developer jobs in California are:
What cities in California are hiring for Junior Mern Stack Developer jobs? Cities in California with the most Junior Mern Stack Developer job openings:
Junior Mern Stack Developer jobs near you
Infographic showing various Junior Mern Stack Developer job openings in California as of August 2026, with employment types broken down into 1% Internship, 78% Full Time, 14% Part Time, 2% Temporary, 4% Contract, and 1% Nights. Highlights an 87% Physical, 3% Hybrid, and 10% Remote job distribution, with an average salary of $87,810 per year, or $42.2 per hour.

Senior Full Stack Developer (San Francisco)

Aisle8

San Francisco, CA • On-site

Full-time

This job post has expired today. Applications are no longer accepted.

Job description

We're seeking an experienced Full Stack Developer to architect and build our next-generation supply chain platform. You'll work with React, Node.js, and cloud infrastructure to deliver scalable solutions that process millions of supply chain data points daily.

Responsibilities
  • Architect and implement core features of our sustainable supply chain platform using React, TypeScript, and Node.js
  • Design and optimize database schemas and queries for handling large volumes of logistics data
  • Build real-time dashboards that visualize carbon footprint and sustainability metrics
  • Collaborate with our sustainability team to implement algorithms that identify waste reduction opportunities
  • Lead code reviews and mentor junior developers on sustainable coding practices
  • Contribute to our open-source initiatives for supply chain transparency
Requirements
  • 5+ years of professional experience in full-stack development with React and Node.js
  • Experience building applications that process and visualize large datasets
  • Knowledge of cloud infrastructure (AWS, GCP, or Azure) and serverless architectures
  • Experience with real-time data processing and visualization libraries
  • Understanding of sustainability metrics and ESG reporting (preferred)
  • Passion for using technology to address environmental challenges
  • Competitive salary based on experience
  • Equity package with additional grants tied to sustainability impact goals
  • Remote-first culture with optional access to our San Francisco hub
  • Quarterly sustainability retreats and team building events
  • Comprehensive health benefits and wellness program
Ready to Apply?

Join our mission to revolutionize supply chains for a more sustainable future. We're looking for passionate individuals who want to make a measurable environmental impact through innovative technology.

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