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Junior Mern Stack Developer Jobs in Riverside, CA

FieldAI

Senior Robot Perception Engineer

Irvine, CA

$70K - $300K/yr

Experience aligning or unifying perception stacks across multiple platforms or product lines. * Demonstrated leadership in research, field operations, or mentoring junior engineers and researchers.

TP-Link Systems Inc.

Senior Hardware Engineer

Irvine, CA

$118K - $158K/yr

In addition, seniors will mentor junior engineers and contribute to the product direction of our ... Work closely with PCB layout engineers or design partners to guide component placement, stack-up ...

TP-Link Systems Inc.

Senior Hardware Engineer

Irvine, CA · On-site

$118K - $158K/yr

In addition, seniors will mentor junior engineers and contribute to the product direction of our ... Work closely with PCB layout engineers or design partners to guide component placement, stack-up ...

TP-Link Systems Inc.

Senior Hardware Engineer

Irvine, CA · On-site

$118K - $158K/yr

In addition, seniors will mentor junior engineers and contribute to the product direction of our ... Work closely with PCB layout engineers or design partners to guide component placement, stack-up ...

Lennar

Sr Software Engineer

Irvine, CA · On-site

$131K - $173K/yr

Design, develop, and maintain full-stack applications, ensuring scalability, performance, and ... Collaborate with DevOps and platform teams to integrate applications into CI/CD pipelines and ...

The Structures Company

Sr. Mechanical Engineer

Irvine, CA · On-site

$130K - $190K/yr

Mentors junior engineers and promotes best practices in high-volume mechanical design. Requirements ... Strong knowledge of tolerance stack-ups, materials, and mechanical fundamentals. * Bachelor ...

M S International Inc.

Software Programmer III

Orange, CA · On-site

$105K - $110K/yr

Mentor and support junior software developers as needed. * Stay current with emerging technologies ... Proven experience in developing enterprise-level full-stack applications. (Must Have) * Strong ...

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Junior Mern Stack Developer information

See Riverside, CA salary details

$25K

$92.8K

$143.4K

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

As of Jul 21, 2026, the average yearly pay for junior mern stack developer in Riverside, CA is $92,825.00, according to ZipRecruiter salary data. Most workers in this role earn between $69,900.00 and $90,800.00 per year, depending on experience, location, and employer.

Can I learn MERN in 3 months?

As a Junior MERN Stack Developer, learning the core technologies—MongoDB, Express.js, React, and Node.js—can be achieved in three months with intensive study and practical projects. However, mastering advanced concepts and building a strong portfolio typically requires ongoing practice beyond this timeframe.

Will AI replace MERN?

AI is unlikely to fully replace MERN stack developers, as the role requires understanding complex application logic, coding, and problem-solving that AI tools can assist but not fully automate. Developers skilled in JavaScript, React, Node.js, and MongoDB will continue to be essential for building and maintaining web applications, especially as AI can enhance productivity and automate routine tasks. Staying updated with new tools and frameworks is important for MERN developers to remain competitive in the evolving tech landscape.

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.

Is MERN stack still in demand?

The MERN stack remains in high demand for web development roles, including Junior MERN Stack Developers, due to its popularity for building scalable and efficient applications. Skills in MongoDB, Express.js, React, and Node.js are highly valued by employers, and knowledge of JavaScript across the stack is essential for many tech companies.

Is MERN stack in demand in 2026?

The MERN stack, which includes MongoDB, Express.js, React, and Node.js, remains highly in demand for junior MERN Stack developers due to its popularity in web development and the growing need for full-stack skills. Proficiency in JavaScript and frameworks like React and Node.js are valuable for job opportunities in 2026.

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 Riverside, CA? The most popular types of Mern Stack Developer jobs in Riverside, CA are:
What are popular job titles related to Junior Mern Stack Developer jobs in Riverside, CA? For Junior Mern Stack Developer jobs in Riverside, CA, the most frequently searched job titles are:
What job categories do people searching Junior Mern Stack Developer jobs in Riverside, CA look for? The top searched job categories for Junior Mern Stack Developer jobs in Riverside, CA are:
What cities near Riverside, CA are hiring for Junior Mern Stack Developer jobs? Cities near Riverside, CA 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 Riverside, CA as of July 2026, with employment types broken down into 84% Full Time, 6% Part Time, 1% Temporary, and 9% Contract. Highlights an 82% Physical, 3% Hybrid, and 15% Remote job distribution, with an average salary of $92,825 per year, or $44.6 per hour.

Senior Robot Perception Engineer

FieldAI

Irvine, CA

$70K - $300K/yr

Full-time

Re-posted 5 days ago

Job description

Who are We?

Field AI is transforming how robots interact with the real world. We are building risk-aware, reliable, and field-ready AI systems that address the most complex challenges in robotics, unlocking the full potential of embodied intelligence. We go beyond typical data-driven approaches or pure transformer-based architectures, and are charting a new course, with already-globally-deployed solutions delivering real-world results and rapidly improving models through real-field applications.

Learn more at https://fieldai.com.

About the Job

At FieldAI, we're building autonomy for robots that operate in the real world, in harsh environments, and under challenging conditions where traditional sensing breaks down. We're looking for a Senior Robotics Perception Engineer to own and advance perception capabilities for our federal autonomy programs. In this role, you will lead development of the perception stack for robots operating in unstructured terrains, taking responsibility for performance, robustness, and deployment on new platforms and sensor configurations. You'll work hands-on across software and hardware for integrating LiDAR, RADAR and multispectral, and sensing into production autonomy systems and delivering capabilities that directly support customers.

What You Will Do 1. Build and Maintain Perception Systems

  • Design, implement, and maintain perception systems for autonomous robots operating in real-world environments.

  • Develop robust localization and mapping capabilities that perform reliably in unstructured, off-road, and field conditions.

  • Continuously evaluate and improve perception performance through testing, iteration, and field validation.

2. Develop and Integrate Sensor-Based Perception

  • Implement perception algorithms that fuse data from multiple sensors such as LiDAR, cameras, RADAR and inertial sensors. 

  • Support the integration of new sensing modalities and sensor configurations as robotic platforms evolve.

  • Ensure perception software operates reliably across simulation and real-world deployments.

3. Deploy Perception Software on Real Robots

  • Bring perception algorithms from development to deployment on physical robotic systems.

  • Debug and resolve issues discovered during on-robot testing and field operations.

  • Collaborate with autonomy, controls, and platform teams to ensure perception systems integrate cleanly into the full autonomy stack.

4. Improve System Robustness and Scalability

  • Contribute to code quality, testing, and long-term maintainability of perception systems.

  • Develop tools, metrics, and tests to monitor performance and catch regressions over time.

  • Help scale perception solutions across multiple robots, environments, and missions.

5. Collaborate Across Teams

  • Work closely with engineers, researchers, and operators to define perception requirements and deliver reliable solutions.

  • Communicate technical designs, tradeoffs, and results clearly to both technical and non-technical stakeholders.

  • Support field operations and customer demonstrations by ensuring perception systems are production-ready.

What You Have

  • PhD degree in Robotics, Computer Science, Electrical Engineering, or a related field or MS degree in a related field with 2+ years of industry or applied research experience, or BS degree in a related field with 4+ years of relevant experience.

  • Strong background in robot perception, localization, and mapping (SLAM) for real-world robotic systems.

  • Hands-on experience developing and deploying perception software in field robotics environments (not just simulation).

  • Proficiency in modern robotics software development (C++, Python) and ROS/ROS2 based systems.

  • Experience working with robot perception and state estimation (VIO, LIO, mapping, sensor fusion etc).

  • Ability to take ownership of complex subsystems, from design through field deployment and long-term maintenance.

  • Comfort working close to hardware, including debugging sensor data, calibration, and real-world failures.

  • Strong problem-solving skills and ability to operate independently in fast-moving, small teams.

The Extras That Set You Apart 

  • Experience with thermal, LWIR, or multispectral passive sensing for robotic perception.

  • Experience integrating and calibrating custom sensor rigs (e.g., stereo, thermal, or multi-LiDAR setups).

  • Familiarity with CI/CD pipelines, performance regression testing, and benchmarking for perception systems.

  • Experience aligning or unifying perception stacks across multiple platforms or product lines.

  • Demonstrated leadership in research, field operations, or mentoring junior engineers and researchers.

  • Knowledge of containerization (Docker, Kubernetes) and modern DevOps practices.

$70,000 - $300,000 a year

Compensation

The salary range for this role is $70,000-$300,000. The actual offer for this position will be based on factors such as relevant experience, competencies, certifications, and how well the candidate meets the qualifications outlined above. Part of our compensation package also includes full benefits, equity, and generous time. 

Why Join Field AI?

We are solving one of the world's most complex challenges: deploying robots in unstructured, previously unknown environments. Our Field Foundational Models set a new standard in perception, planning, localization, and manipulation, ensuring our approach is explainable and safe for deployment.

You will have the opportunity to work with a world-class team that thrives on creativity, resilience, and bold thinking. With a decade-long track record of deploying solutions in the field, winning DARPA challenge segments, and bringing expertise from organizations like DeepMind, NASA JPL, Boston Dynamics, NVIDIA, Amazon, Tesla Autopilot, Cruise Self-Driving, Zoox, Toyota Research Institute, and SpaceX, we are set to achieve our ambitious goals.

Be Part of the Next Robotics Revolution

To tackle such ambitious challenges, we need a team as unique as our vision - innovators who go beyond conventional methods and are eager to tackle tough, uncharted questions. We're seeking individuals who challenge the status quo, dive into uncharted territory, and bring interdisciplinary expertise. Our team requires not only top AI talent but also exceptional software developers, engineers, product designers, field deployment experts, and communicators.

We are headquartered in always-sunny Irvine, Southern California and have US based and global teammates. 

Join us, shape the future, and be part of a fun, close-knit team on an exciting journey!

We celebrate diversity and are committed to creating an inclusive environment for all employees. Candidates and employees are always evaluated based on merit, qualifications, and performance. We will never discriminate on the basis of race, color, gender, national origin, ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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