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Intern Mern Full Stack Developer Jobs in California

Teserac, Inc.

Full Stack Developer

Sunnyvale, CA · On-site

Why You Would Be a Good Fit You are a full-stack engineer who takes pride in shipping features that are fast, clean, and production-ready. You're comfortable in unfamiliar territory - whether that ...

Staffactory

Full Stack Developer

Los Angeles, CA · On-site

Full Stack Developer Location: Los Angeles, CA Work Environment: Position is hybrid. Local Southern California is preferred. The candidate must be willing to go onsite. Key responsibilities: * Full ...

Info Way Solutions

full stack developer

Fremont, CA · On-site

Info Way Solutions is a company seeking a Full Stack Engineer. The position requires skills in React JS, Java Spring Boot, and AWS exposure. Qualifications : Required : • React JS • Java Spring ...

WFNQAFR44D

Full Stack Developer

San Francisco, CA · On-site

$4.5K - $7.8K/yr

As a Full Stack Developer, you will be responsible for designing, developing, and maintaining both the front-end and back-end components of web applications that deliver seamless user experiences.

eTouch Systems

Full Stack Web Developer

San Jose, CA · On-site

Full Stack Developer Strong Java Programming Skills. Hands on needed Node.js backend React.js Front end If interested please share your resume and send it to srele at etouch.net Snehal Rele/ Sr ...

WFNQAFR44D

Full Stack Developer

San Francisco, CA · On-site

$4.5K - $7.8K/yr

As a Full Stack Developer, you will be responsible for designing, developing, and maintaining both the front-end and back-end components of web applications that deliver seamless user experiences.

PBK

Full Stack Developer III

Berkeley, CA · On-site

The Full Stack Developer III builds and supports applications, integrations, and digital tools that enable PBK's Architecture vertical and broader AEC operations. This role partners closely with ...

Info Way Solutions

full stack java developer

Fremont, CA · On-site

$57.50 - $74.25/hr

Senior Java Full Stack Developer (Microservices, Kafka, AWS) Location: Columbus, OH Positions: 3 Employment Type: Contract Job Overview: We are seeking experienced Senior Java Full Stack Developers ...

Kasmo Global

Java Full Stack Developer

Mountain View, CA · On-site

$61.50 - $79.25/hr

Java Full Stack Engineer Mountain View, CA - Hybrid 3 Days onsite Lead the design, development, and deployment of full-stack web applications. Architect and implement scalable backend services using ...

Vianai Systems

Full Stack Developer

Palo Alto, CA

$110K - $160K/yr

As a full-stack developer, you would touch nearly every aspect of our business and work in cross-functional teams to ensure our products are the best they can be. Expectations: * Design, plan, and ...

Vianai Systems

Full Stack Developer

Palo Alto, CA · On-site +1

$110K - $160K/yr

As a full-stack developer, you would touch nearly every aspect of our business and work in cross-functional teams to ensure our products are the best they can be. Expectations: * Design, plan, and ...

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Intern Mern Full Stack Developer information

What is the difference between Intern Mern Full Stack Developer vs Intern Front End Developer?

AspectIntern Mern Full Stack DeveloperIntern Front End Developer
SkillsProficiency in MongoDB, Express.js, React, Node.js, JavaScriptProficiency in HTML, CSS, JavaScript, React or Angular
Work EnvironmentDevelops both client-side and server-side applicationsFocuses on client-side interface and user experience
Common UsageUsed in full-stack development teams across startups and tech companiesPrimarily in front-end teams for UI/UX design

The Intern Mern Full Stack Developer role involves working on both front-end and back-end development using the MERN stack, providing a broader scope of development tasks. In contrast, the Intern Front End Developer focuses solely on creating and optimizing user interfaces. Both roles require JavaScript knowledge, but the full stack role demands familiarity with server-side technologies, making it more comprehensive in scope.

What types of projects can an Intern MERN Full Stack Developer expect to work on, and how are tasks typically assigned within the team?

As an Intern MERN Full Stack Developer, you can expect to work on a variety of projects ranging from building new web applications to maintaining and improving existing ones. Tasks are usually assigned based on project requirements and your skill level, often starting with smaller features or bug fixes, allowing you to gradually take on more responsibility. You'll collaborate closely with senior developers, designers, and QA testers, participating in code reviews and daily stand-ups. This structure helps you gain hands-on experience across the entire development stack while receiving mentorship and feedback to support your growth.

What are the key skills and qualifications needed to thrive as an Intern MERN Full Stack Developer, and why are they important?

To thrive as an Intern MERN Full Stack Developer, you need foundational knowledge of JavaScript, HTML, CSS, and a basic understanding of MongoDB, Express.js, React, and Node.js. Familiarity with development tools like Git, npm, and code editors, as well as exposure to RESTful APIs, is typically expected. Strong problem-solving, eagerness to learn, and effective teamwork and communication skills help interns adapt and contribute to projects. These skills and qualities are crucial for building, debugging, and maintaining robust web applications in collaborative, fast-paced environments.

What are Intern MERN Full Stack Developers?

Intern MERN Full Stack Developers are entry-level software developers who specialize in building web applications using the MERN stack, which includes MongoDB, Express.js, React.js, and Node.js. As interns, they typically assist with both front-end and back-end development tasks, gaining hands-on experience under the guidance of senior developers. Their responsibilities often include writing code, debugging applications, collaborating on team projects, and learning industry best practices. This internship provides an opportunity to develop technical skills and gain insight into the software development lifecycle.
What are the most commonly searched types of Mern Full Stack Developer jobs in California? The most popular types of Mern Full Stack Developer jobs in California are:
What are popular job titles related to Intern Mern Full Stack Developer jobs in California? For Intern Mern Full Stack Developer jobs in California, the most frequently searched job titles are:
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Intern Mern Full Stack Developer jobs near you

Full Stack Developer

Teserac, Inc.

Sunnyvale, CA • On-site

Full-time

Medical, Dental, Vision, PTO

This job post has expired 1 day ago. Applications are no longer accepted.

Job description

About the Role
Teserac is building neuron™, a unified AI-native platform for data center observability, intelligence, and workflow automation. neuron™ processes real-time telemetry from thousands of sensors, meters, and control systems across heterogeneous data center environments - giving infrastructure owners and operators the visibility to monitor, analyze, automate, and proactively manage power operations with full situational awareness. An embedded AI teammate serves as every operator's always-on co-pilot: detecting anomalies, correlating events, and surfacing recommendations 24/7.
As a Full Stack Developer, you will build the features and interfaces that data center operators rely on to monitor, analyze, and act on real-time power and operational data. You will work across the entire stack - from real-time dashboards and alerting UIs to backend data pipelines and API integrations.
This is a high-impact role where your code ships to production quickly and directly affects how some of the world's most critical infrastructure is managed. You will work closely with the Principal Software & Architecture Lead, Product, and Solution Engineering in a fast-moving, small-team environment.
We move fast. We avoid bureaucracy. We expect engineers to own outcomes, not tickets.
Why You Would Be a Good Fit
You are a full-stack engineer who takes pride in shipping features that are fast, clean, and production-ready. You're comfortable in unfamiliar territory - whether that's a new protocol, an unfamiliar dataset, or a tight deadline - and you default to ownership rather than waiting for direction. You thrive in fast-moving environments where your work has direct, visible impact.
You likely:
  • Build front-to-back: you can wire a real-time dashboard from WebSocket to pixel without passing the baton.
  • Write clean, tested code and treat code reviews as a team learning opportunity.
  • Are comfortable with ambiguity - you can turn a rough product requirement into a well-scoped implementation plan.
  • Have worked with time-series or streaming data and understand the performance implications of large dataset rendering.
  • Learn quickly and enjoy working at the intersection of software, data, and physical systems.

Key Responsibilities
Front-End Development
  • Build and maintain front-end interfaces for neuron™: real-time dashboards, alerting systems, capacity planning views, and operational workflow UIs.
  • Build UI components and workflows for the AI teammate: interaction panels, recommendation displays, approval workflows, and audit trails.
  • Optimize application performance for real-time data rendering, large dataset visualization, and responsive user experiences across device types.

Back-End Development
  • Develop backend services and APIs that power data ingestion, normalization, and delivery of telemetry from diverse data center sources.
  • Implement integration modules for BMS, EPMS, and third-party monitoring systems using protocols including Modbus, BACnet, SNMP, and REST APIs.
  • Design and maintain RESTful APIs with clean contracts and well-documented schemas.

Engineering Quality & Process
  • Write clean, tested, and well-documented code; participate in code reviews and contribute to engineering best practices.
  • Contribute to CI/CD pipelines, automated testing, and deployment processes.
  • Collaborate with the Principal Architect and Product to refine requirements and deliver features within sprint cycles.
  • Troubleshoot production issues across the stack and participate in on-call rotations as the platform scales.

Why Teserac
Teserac is AI-native observability and workflow automation purpose-built for mission-critical physical infrastructure. We are not building incremental improvements to legacy tools. We are re-architecting how data centers see, understand, and act on their own operations.
  • Ship features that directly impact how some of the world's most critical AI infrastructure is powered and managed.
  • Small engineering team where every developer has outsized impact and direct visibility into product decisions.
  • Work at the intersection of AI, real-time systems, and physical infrastructure - a rare and technically compelling combination.
  • Competitive compensation with meaningful equity upside; grow with the company from Series A through scale.

Requirements
  • 4+ years of professional full-stack development experience.
  • Strong front-end skills: React with TypeScript, modern CSS, and data visualization libraries (D3.js, Recharts, or similar).
  • Solid backend experience: Node.js/TypeScript or Python; RESTful API design; relational and time-series databases.
  • Experience with real-time data: WebSockets, server-sent events, streaming data, or pub/sub architectures.
  • Familiarity with cloud platforms (AWS, GCP, or Azure) and containerized deployment (Docker, Kubernetes).
  • Strong problem-solving skills and the ability to work independently in a fast-paced startup environment.
  • Bachelor's degree in Computer Science, Engineering, or equivalent practical experience.

Preferred Qualifications
  • Experience with IoT platforms, industrial data, or sensor telemetry systems.
  • Familiarity with data center infrastructure, DCIM tools, or building management systems.
  • Experience with industrial protocols: Modbus, BACnet, SNMP, or similar OT/IoT data sources.
  • Experience building observability or monitoring dashboards (Grafana, Datadog-style interfaces).
  • Demonstrated use of AI-assisted development tools (Cursor, Copilot, LLM-based workflows) to accelerate engineering velocity while maintaining high standards.
  • Experience at an early-stage startup (Seed through Series B).

Benefits
  • Health Care Plan (Medical, Dental & Vision)
  • Paid Time Off (Vacation, Sick & Public Holidays)
  • Free Food & Snacks
  • Stock Option Plan

Apply