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Junior Mern Stack Developer Jobs in California (NOW HIRING)

Full Stack Developer Job Category: Information Technology Time Type: Full time Minimum Clearance ... supporting junior developers, providing guidance on coding practices and problem-solving.

Junior Full Stack Engineer Salary Range: $70,000-$95,000 About the Role We are seeking a Junior Full Stack Engineer to join a growing technology organization and help build modern, AI-powered ...

Sr.Developer

Sunnyvale, CA · On-site

$65 - $85.75/hr

Cognizant is looking for Sr Developer 2. Job Summary : Primary Skill - Core Java Spring Rest Rest ... MERN stacks and related technologies. - Proficient knowledge in back-end API development using ...

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 ...

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers ... junior developers and/or coordinate the work of on-site coordinators that support off-shore ...

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

Showing results 21-40

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 Sep 9, 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.

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 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.

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 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 cities in California are hiring for Junior Mern Stack Developer jobs?

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

Infographic showing various Junior Mern Stack Developer job openings in California as of August 2026, with employment types broken down into 92% Full Time, 3% Part Time, 4% Contract, and 1% Nights. Highlights an 85% Physical, 4% Hybrid, and 11% Remote job distribution, with an average salary of $87,810 per year, or $42.2 per hour.

Full Stack Developer

Norco, CA • On-site

Full-time

Medical, Retirement, PTO

Re-posted 14 days ago


Job description

Job Title: Full Stack Developer

Job Category: Information Technology

Time Type: Full time

Minimum Clearance Required to Start: Secret

Employee Type: Regular

Percentage of Travel Required: Up to 10%

Type of Travel: Continental US

* * *

The Opportunity:

CACI is seeking a highly experienced Full Stack Software Developer to lead the design, development, and maintenance of complex software applications. The ideal candidate will have significant experience in development, a deep understanding of software engineering principles, and a track record of delivering scalable, high-quality solutions. As a developer, you will collaborate closely with other developers, product managers, and stakeholders to ensure timely and effective software delivery.

As with any position, additional expectations exist. Some of these are, but are not limited to, adhering to normal working hours, meeting deadlines, following company policies as outlined by the Employee Handbook, communicating regularly with assigned supervisor(s), and staying focused on the assigned tasks.
 

Responsibilities:

•    Design, develop, and maintain software applications, ensuring alignment with business and technical requirements.
•    Participate in architectural design decisions and contribute to software design patterns and frameworks.
•    Work closely with cross-functional teams, including product managers and QA engineers, to deliver software on time and within scope.
•    Write clean, efficient, and maintainable code while adhering to coding standards and best practices.
•    Conduct code reviews and provide constructive feedback to ensure high-quality software delivery.
•    Debug, troubleshoot, and resolve software issues in a timely manner, identifying root causes and implementing effective solutions.
•    Collaborate in Agile development processes, including sprint planning, stand-ups, and retrospectives.
•    Stay current with new technologies, tools, and industry trends, and apply them to ongoing development projects.
•    Assist in mentoring and supporting junior developers, providing guidance on coding practices and problem-solving.

Qualifications:

Required: 

•    Bachelor’s degree in Computer Science, Engineering, or related field (or equivalent experience).
•    5+ years of experience in software development.
•    Proficiency in one or more programming languages such as Java, C#, Python, JavaScript, HTML or, CSS.
•    Experience with front-end frameworks (React, Angular) and back-end technologies (Node.js, .NET).
•    Familiarity with cloud platforms such as AWS, Azure, or Google Cloud for application deployment.
•    Strong understanding of relational databases (Microsoft SQL Server).
•    Solid experience with Agile methodologies and version control tools (e.g., Git).
•    Strong problem-solving, debugging, and troubleshooting skills.
•    Knowledge of software development best practices, including secure coding and performance optimization.
•    Must be able to obtain and maintain a DoD SECRET clearance.
•    CompTIA Security+.
•    Must be able to work onsite daily in Norco, CA.
•    Must be a U.S. Citizen.

Desired:

•    Experience with containerization and orchestration tools (e.g., Docker, Kubernetes).
•    Understanding of CI/CD pipelines and DevOps practices.
•    Experience working with microservices architecture and distributed systems.
•    Strong communication skills and ability to work in a collaborative team environment.
•    Prior experience mentoring junior developers and contributing to technical design discussions.
 

-

What You Can Expect:

 A culture of integrity.

At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.

An environment of trust.

CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth.

Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.

Pay Range:

There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

The proposed salary range for this position is:

$90,300 - 189,600 USD

CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.