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Junior Mern Stack Developer Jobs in California (NOW HIRING)

Diverse Lynx

Software Engineer MERN

Sunnyvale, CA

Technical/Functional Skills Key Qualifications Full Stack Development: 1. Strong experience in ... Expertise in advanced JavaScript features, asynchronous programming (promises, async/await), and ...

Fox

Senior Full-Stack Developer

Los Angeles, CA · On-site

$143K - $165K/yr

ABOUT THE ROLE We are looking for a highly skilled and experienced Senior Full Stack Developer to ... You will be a technical leader, responsible for driving architectural decisions, mentoring junior ...

Fuser

Jr. Full Stack Engineer

Los Angeles, CA · Hybrid

$70K - $90K/yr

Junior Full Stack Engineer We've launched our public beta with a strong foundation--multiplayer infrastructure, a node-based canvas, and dozens of AI integrations--and we're growing fast. You'll join ...

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 ...

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 Jun 15, 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 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.

What is a Junior Mern Stack Developer job?

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 June 2026, with employment types broken down into 73% Full Time, 9% Part Time, and 18% Contract. Highlights an 82% In-person, and 18% Remote job distribution, with an average salary of $87,810 per year, or $42.2 per hour.

Full Stack Developer (.Net)

Sirian Group Inc

Fremont, CA

Other

Posted 4 days ago

Job description

Role: Full Stack Developer (.Net)

Location: Fremont, CA onsite 5 days per week (Local Candidates Only)

Duration: Long Term

Interview process: Video interview + In person interview.


Must Have (Requirements)1) Core Tech Stack (Hands-on)
  • C# / .NET back-end development experience (production systems)
  • Angular front-end development experience (production systems)
  • JavaScript / TypeScript proficiency for modern web development
  • MySQL (Required) experience in application development contexts
    • Ability to read/write non-trivial SQL
    • Strong understanding of:
      • Joins (inner/outer), grouping/aggregation
      • Indexing fundamentals and query behavior
      • Basic query tuning / performance adjustments
    • Note: Advanced DBA skills are not required, but “basic SQL” is not enough
2) API & Architecture Experience
  • REST APIs (Must)
    • RESTful API design and implementation
    • Understanding of API principles:
      • Contracts, inputs/outputs
      • Status codes and error handling
      • Versioning / maintaining APIs in production
  • Microservices architecture experience (Must)
    • Hands-on experience supporting services in production
    • Understanding of:
      • Service-to-service communication
      • Distributed system behavior and failure modes
      • Ownership/operational responsibility for services
3) Full-Stack Delivery
  • Proven experience delivering end-to-end web applications (UI + backend + DB)
  • Strong understanding of API integration and practical system integration patterns
4) Engineering Fundamentals (Major evaluation focus)
  • Strong Object-Oriented Programming fundamentals
    • Clean class design
    • Proper encapsulation, abstraction, inheritance
  • Demonstrated Clean Code practices
    • Readable, maintainable, structured code
    • Ability to adapt quickly to an existing codebase and follow team standards
  • Experience with:
    • CI/CD pipelines
    • Testing (unit and integration)
    • Familiarity with common design patterns (e.g., decorator and others)
5) Experience Level
  • 3–5 years of professional experience (no more then 9 years)
  • True mid-level hands-on contributor (not junior)
6) Execution & Operating Mindset
  • Ownership & production mindset
    • Responsible end-to-end: implementation → testing → release → production
    • Awareness of how failures impact real customer/service outcomes
    • Comfortable debugging issues post-release
  • Comfortable working in:
    • Fast releases (weekly)
    • High-visibility systems with tight feedback loops
  • Experience using:
    • GitHub, Jira, Confluence
  • Comfortable in:
    • Weekly sprints and rapid iteration

Nice to Have (Preferred)

  • Redis experience (part of stack; not required)
  • Experience with PostgreSQL (in addition to MySQL)
  • Event-driven / messaging mindset (Kafka-like thinking, even if not explicit)
  • Understanding asynchronous workflows, eventual consistency concepts, and pub/sub patterns
  • Prior experience working in service operations, logistics, workflow-heavy platforms, or other high-throughput internal tools
 

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