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Freelance Full Stack Engineer Jobs in New Jersey

Eightelevengroup

Sr Full Stack Engineer

Summit, NJ · On-site

$103.32 - $110.21/hr

Sr Full Stack Engineer Summit, NJ Hybrid Role Compensation: $75 - $80 per hour ABOUT THE ROLE Our client, a Fortune 500 Consumer Packaged Goods (CPG) company, is seeking a Senior Full Stack Engineer ...

Cross River

Full Stack Engineer

Fort Lee, NJ

$160K - $200K/yr

What We're Looking For Cross River Bank is seeking a Senior Full Stack Engineer who thrives at the intersection of intelligent systems and polished product experiences. You'll work across the entire ...

Brooksource

Sr Full Stack Engineer

Summit, NJ · On-site

$75 - $80/hr

Sr Full Stack Engineer Summit, NJ Hybrid Role Compensation: $75 - $80 per hour ABOUT THE ROLE Our client, a Fortune 500 Consumer Packaged Goods (CPG) company, is seeking a Senior Full Stack Engineer ...

Cross River

Full Stack Engineer

Fort Lee, NJ · On-site

$160K - $200K/yr

What We're Looking For Cross River Bank is seeking a Senior Full Stack Engineer who thrives at the intersection of intelligent systems and polished product experiences. You'll work across the entire ...

Info Way Solutions

Java Full Stack Engineer

Jersey City, NJ · On-site

$57.50 - $74.25/hr

Info Way Solutions is seeking Java Full Stack Engineers at multiple experience levels to join a dynamic engineering team. The ideal candidates will have strong expertise in Java, Python, AWS, and ...

Citi

Full Stack Engineer

Jersey City, NJ · On-site

Job Overview We are looking for experienced Full-Stack Software Engineers who are passionate about solving business problems through innovation and engineering practices. This role will be ...

Eliassen Group

Full Stack Engineer

Jersey City, NJ · On-site

$85 - $89/hr

Hybrid 4 days on-site in Jersey City, NJ Our client seeks a Full Stack Engineer to design, build, and support scalable enterprise applications using Java, Spring Boot, and Angular. The engineer will ...

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 ... Agile, Software Engineer, Software Developer, Programming, Programmer Analyst, New Jersey ...

BNY

Vice President, Full-Stack Engineer

Jersey City, NJ · On-site

Vice President, Full Stack Engineer At BNY, our culture allows us to run our company better and enables employees' growth and success. As a leading global financial services company at the heart of ...

BNY

Vice President, Full-Stack Engineer

Jersey City, NJ · On-site

Vice President, Full Stack Engineer At BNY, our culture allows us to run our company better and enables employees' growth and success. As a leading global financial services company at the heart of ...

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Freelance Full Stack Engineer information

What does a freelance full stack engineer do?

A Freelance Full Stack Engineer is a self-employed software developer who is skilled in both front-end (client-side) and back-end (server-side) technologies. They design, build, and maintain complete web applications or websites, handling everything from user interfaces to databases and server logic. Freelance full stack engineers often work with a variety of clients on short-term or long-term projects, adapting to different tech stacks and business requirements. Their versatility makes them valuable for startups, agencies, and companies needing flexible development expertise.

What are the key skills and qualifications needed to thrive as a freelance full stack engineer?

To thrive as a Freelance Full Stack Engineer, you need strong proficiency in both front-end and back-end programming languages (such as JavaScript, HTML/CSS, Node.js, and Python) and a solid understanding of database management and web architecture. Familiarity with frameworks like React, Angular, or Django, version control systems like Git, and cloud platforms is often required, and certifications (e.g., AWS Certified Developer) can be advantageous. Excellent problem-solving, time management, and client communication skills help set you apart in a competitive freelance environment. These skills and qualities are crucial for delivering high-quality, end-to-end solutions while managing multiple projects and maintaining client satisfaction.

What are some common challenges faced by freelance full stack engineers when managing multiple projects simultaneously?

Freelance full stack engineers often juggle several projects at once, which can lead to challenges such as balancing client expectations, managing time effectively, and ensuring consistent code quality across different tech stacks. Communication is key, as freelancers must regularly update clients and coordinate with other team members who may be working remotely. Staying organized with project management tools and setting clear boundaries for deliverables and timelines can help mitigate these challenges, allowing engineers to deliver high-quality work while maintaining healthy client relationships.

What is the difference between Freelance Full Stack Engineer vs Freelance Front End Developer?

AspectFreelance Full Stack EngineerFreelance Front End Developer
SkillsProficient in both front-end and back-end technologies (e.g., HTML, CSS, JavaScript, Node.js, databases)Specializes in front-end technologies (e.g., HTML, CSS, JavaScript, frameworks like React or Angular)
Work EnvironmentHandles entire project development, often working on both client and server sidesFocuses on user interface and experience, primarily on the client side
Common UsageUsed in projects requiring full-stack development, versatile rolesUsed in projects emphasizing UI/UX design and front-end features

Freelance Full Stack Engineers have a broader skill set covering both front-end and back-end development, enabling them to manage entire projects. Freelance Front End Developers specialize in creating engaging user interfaces. The choice depends on project scope and required expertise.

What are the most commonly searched types of Full Stack Engineer jobs in New Jersey?

The most popular types of Full Stack Engineer jobs in New Jersey are:

What are popular job titles related to Freelance Full Stack Engineer jobs in New Jersey?

For Freelance Full Stack Engineer jobs in New Jersey, the most frequently searched job titles are:

What job categories do people searching Freelance Full Stack Engineer jobs in New Jersey look for?

The top searched job categories for Freelance Full Stack Engineer jobs in New Jersey are:

What cities in New Jersey are hiring for Freelance Full Stack Engineer jobs?

Cities in New Jersey with the most Freelance Full Stack Engineer job openings:

Freelance Full Stack Engineer jobs near you
Infographic showing various Freelance Full Stack Engineer job openings in New Jersey as of August 2026, with employment types broken down into 71% Full Time, and 29% Contract. Highlights an 100% In-person job distribution.

Sr Full Stack Engineer

Eightelevengroup

Summit, NJ • On-site

$103.32 - $110.21/hr

Other

Posted 15 days ago

Job description

Sr Full Stack Engineer

Summit, NJ

Hybrid Role

Compensation: $75 - $80 per hour

ABOUT THE ROLE

Our client, a Fortune 500 Consumer Packaged Goods (CPG) company, is seeking a Senior Full Stack Engineer to serve as the technical anchor and lead for automation tools within the product development team. This hybrid role, based in Summit, NJ, offers high-impact engagement and direct partnership with business and technology leadership. You will own end-to-end full stack development, including standing up and managing cloud infrastructure (compute and database), designing and connecting APIs, and building frontend interfaces with React. The role requires hands-on expertise in GenAI prompt engineering to ensure consistent, low-hallucination AI-assisted workflows. You will guide architecture and approach, integrating backend and frontend systems, and collaborate closely with cross-functional teams to deliver impactful solutions.

WHAT YOU'LL DO
  • Own end-to-end delivery across backend, middle tier, and frontend for automation tool initiatives
  • Stand up and manage cloud-based infrastructure (compute and database) to support application development (Azure preferred, AWS acceptable)
  • Design, build, and connect APIs to enable application functionality
  • Develop and integrate frontend interfaces (React preferred) with backend services
  • Utilize Python for data manipulation and processing tasks
  • Apply GenAI prompt engineering practices to ensure consistent, reliable model outputs and minimize hallucinations
  • Act as the technical anchor for the build, guiding architecture and technical approach for the product development team
  • Partner directly with business and technology leadership to deliver impactful solutions
WHAT YOU BRING
  • 5+ years of full stack engineering experience with strong breadth across backend, middle tier, and frontend
  • Demonstrated experience building and connecting APIs
  • Experience standing up cloud-based infrastructure (compute and database) for application development - Azure preferred, AWS acceptable
  • Frontend development experience, React preferred
  • Python experience for data manipulation and processing
  • Hands-on GenAI prompt engineering experience, including techniques for producing consistent model outputs and mitigating hallucinations
  • Proven ability to work end-to-end, from infrastructure through interface
WHAT'S IN IT FOR YOU
  • High-impact engagement with a global Fortune 500 Consumer Health company
  • Direct partnership with business and technology leadership
  • Opportunity to lead technical architecture and approach for automation tools

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