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Mern Full Stack Developer Jobs in New York (NOW HIRING)

Reailize

AI Full Stack Developer

Middletown, NJ · On-site

About the Role We are looking for an AI Full Stack Developer to design, build, and deploy ... Internally, the applications are built on a MERN stack (MongoDB, Express.js, React, Node.js)

Next Step Systems

Full Stack Developer

New York, NY · On-site

Full Stack Developer, New York City, NY Have 2 openings. These Full Stack Developer positions are 12 month contracts. These positions are not open for Sponsorship. US Citizen/Green Card Holder only ...

Next Step Systems

Full Stack Developer

Weehawken, NJ · On-site

Full Stack Developer, Weehawken, NJ Have 2 openings for the Full Stack Developer opening. These are 12 month contracts. These positions are not open for Sponsorship. US Citizen/Green Card Holder only ...

Navtech, Inc.

Full Stack Developer

Livingston, NJ · On-site

I have an opportunity for "Full Stack Developer" and looking for a candidate who can join Immediately if you are interested reply me with your updated resume or consultant's contact details and if ...

DHD Consulting

Full Stack Developer

Secaucus, NJ

Full Stack Developer We are looking for a full stack developer who is eager to work with cutting-edge technologies and architectures in a forward-thinking company that consistently pushes the limits.

New

Strivector

Full Stack Developer

Manhattan, NY · On-site

POSITION OVERVIEW As a Full stack developer you'll need to be an expert in Java and enterprise Java. * You'll also need experience working with Frontend, familiar with React. * For the Backend ...

Zenith Mind Inc.

Full Stack Developer

New York, NY

We are looking for a skilled Full Stack Developer to join our team. The ideal candidate will be responsible for developing and maintaining web applications, working on both frontend and backend ...

New

Compunnel

Full Stack Developer

New York, NY · On-site

JOB SUMMARY We are seeking a Full Stack Developer with strong experience in modern application development and AI-driven solutions. This role will focus on designing, developing, and maintaining ...

Pharo Management

Full Stack Developer

New York, NY · On-site

$175K - $200K/yr

Full Stack Developer Who we are: Pharo Management is a leading global macro hedge fund with a focus on emerging markets. Founded in 2000, the firm has offices in London, New York, Hong Kong and Abu ...

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All JobsMern Full Stack Developer JobsMern Full Stack Developer Jobs in New York

Mern Full Stack Developer information

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$64

$94

How much do mern full stack developer jobs pay per hour?

As of Jul 27, 2026, the average hourly pay for mern full stack developer in New York is $64.83, according to ZipRecruiter salary data. Most workers in this role earn between $53.89 and $74.71 per hour, depending on experience, location, and employer.

What is a Mern Full Stack Developer job?

A MERN Full Stack Developer is a software developer who specializes in building web applications using the MERN stack, which includes MongoDB, Express.js, React, and Node.js. They handle both front-end and back-end development, ensuring seamless interaction between the client and server. Their responsibilities include designing UI components, developing APIs, managing databases, and deploying applications. This role requires proficiency in JavaScript, understanding of full-stack development concepts, and experience with modern web technologies. MERN Full Stack Developers often work on end-to-end development projects, ensuring responsive and scalable web applications.

What does a typical workday look like for a Mern Full Stack Developer?

As a Mern Full Stack Developer, your typical workday involves collaborating with designers, product managers, and other developers to build and maintain web applications using the MERN stack. You'll spend time coding both front-end components with React and back-end services with Node.js and Express, as well as working with MongoDB for data management. Regular tasks include participating in stand-up meetings, code reviews, debugging, and continuous integration activities. The role often requires balancing multiple projects or features, ensuring smooth communication between team members, and adapting to fast-paced development cycles.

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

To thrive as a Mern Full Stack Developer, you need strong proficiency in JavaScript, React, Node.js, Express, MongoDB, and a solid understanding of front-end and back-end development principles. Familiarity with tools like Git, Docker, RESTful APIs, and holding relevant certifications such as MongoDB or React Developer credentials can be highly beneficial. Effective communication, problem-solving abilities, and a collaborative mindset are valuable soft skills for this position. These skills collectively enable developers to build scalable web applications, adapt to evolving project needs, and work effectively in dynamic team environments.

What are the most commonly searched types of Mern Full Stack Developer jobs in New York? The most popular types of Mern Full Stack Developer jobs in New York are:
What are popular job titles related to Mern Full Stack Developer jobs in New York? For Mern Full Stack Developer jobs in New York, the most frequently searched job titles are:
What job categories do people searching Mern Full Stack Developer jobs in New York look for? The top searched job categories for Mern Full Stack Developer jobs in New York are:
Mern Full Stack Developer jobs near you
Infographic showing various Mern Full Stack Developer job openings in New York as of July 2026, with employment types broken down into 82% Full Time, 6% Part Time, 1% Temporary, and 11% Contract. Highlights an 83% Physical, 4% Hybrid, and 13% Remote job distribution, with an average salary of $134,853 per year, or $64.8 per hour.

AI Full Stack Developer

Reailize

Middletown, NJ • On-site

Full-time

Posted 18 days ago

Job description

Join Reailize - where innovation meets impact. We're on a mission to help global enterprises work smarter, faster, and more efficiently at the cutting edge of AI, data, and cloud. By combining deep expertise, advanced engineering, and patented software, we transform complexity into opportunity. Here, curiosity, collaboration, and bold ideas aren't just welcomed - they're celebrated.
What makes us different?
We are a private & global group of companies with 20+ years of proven track record, supporting leading organizations in Telecom, Security, and Real Estate across North America, Europe, the Middle East, and Latin America.
About the Role
We are looking for an AI Full Stack Developer to design, build, and deploy intelligent web applications powered by large language models and AI SDKs. You will own features end to end from the user interface and backend services to the LLM-based capabilities that drive them and ship them into production.
Note on tech stack: Internally, the applications are built on a MERN stack (MongoDB, Express.js, React, Node.js). Direct experience with this stack to build web based application is a plus, but we're primarily hiring for strong full-stack and AI-building ability the right candidate can ramp on our specific stack quickly.
Work Model: For US candidates, please note that this role is based in Middletown, NJ and is 100% onsite. For candidates in Quebec, this is a hybrid role, 3 days onsite out of our Montreal office.
Responsibilities:
  • Design, build, and maintain full-stack web applications with AI-powered features.
  • Build and integrate LLM-based features chat, copilots, summarization, extraction, and retrieval-augmented generation into products.
  • Do prompt engineering, tool/function calling, and agent workflows on top of AI SDKs.
  • Design evaluation and guardrail patterns for AI features (quality, safety, cost, latency).
  • Develop scalable, secure backend services and APIs that wrap AI capabilities.
  • Create responsive, reusable, maintainable user interfaces for AI features.
  • Integrate AI SDKs, embedding models, and vector retrieval with internal services.
  • Deploy applications and AI services to cloud environments.
  • Set up CI/CD and monitor production AI features for latency, cost, and quality drift.
  • Troubleshoot issues across the full stack.
  • Work with product, design, and engineering teams in an Agile environment.
  • Apply security best practices across applications and AI integrations.

Qualifications:
  • Degree in computer science, AI, data science, or a related field (or equivalent experience).
  • Strong programming skills, including a primary web-focused language and a language commonly used for AI/ML work.
  • Direct experience with the MERN stack (MongoDB, Express.js, React, Node.js).
  • Experience building AI agents or multi-step LLM workflows.
  • Proven experience building production web applications end to end.
  • Experience building features on top of large language models and AI SDKs prompt engineering, retrieval, and function/tool use.
  • Experience building responsive user interfaces and robust backend services and APIs.
  • Experience designing and integrating APIs and service-oriented architecture.
  • Familiarity with embeddings, vector retrieval, and retrieval-augmented generation patterns. • Familiarity with containers and automated deployment pipelines.
  • Understanding of cloud deployment and infrastructure.
  • Strong understanding of authentication, authorization, and API security.
  • Comfort with version control and collaborative development workflows.
  • Strong debugging and problem-solving skills.

Interview Integrity:
During the interview process, we're evaluating your individual problem-solving skills, creativity, and approach to challenges. While AI tools like ChatGPT, Claude, and Cursor are part of your daily toolkit once you join B-Yond, all interviews, assessments, and take-home assignments must be completed independently.
You may not use AI tools, third-party services, coaching platforms, or content-farming services during any part of the interview process unless we explicitly permit it. We will clearly communicate when AI tools are allowed for specific assessments.
Any indication of third-party assistance or AI-generated responses will result in immediate disqualification.

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