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Freelance Full Stack Engineer Jobs (NOW HIRING)

Full-Stack Engineer Nexusflow is currently adding Full-Stack Engineers to our team. Our full-stack engineers are responsible for packaging up our technology in models and last-mile quality toolings ...

Full Stack Engineering Resource Looking for a full stack engineering resource. Please find suitable profiles with the following skillset: * Python * Cloud Certified (AWS/GCP) * Terraform

Full Stack Engineer This position is located in the Department of Health & Human Services (HHS), Centers for Medicare & Medicaid Services (CMS), Office of Information Technology (OIT). As a Full ...

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Full Stack Engineer Rootshell Enterprise Technologies Inc. is a recognized provider of professional IT Consulting services in the US. We are actively seeking Full Stack Engineer for one of our direct ...

Full Stack Engineer

Seattle, WA · On-site

$130K - $200K/yr

Full Stack Engineer Golden Analytics (via Provn) job board listing HTML Full Stack Engineer Pay: $130,000.00 - $200,000.00 per year About the job Provn is hiring a Full Stack Engineer for a Bellevue ...

Full Stack Engineer We're looking for a talented and motivated full-stack engineer with 3+ years of experience to join as an early member of our growing team. You will own end-to-end technology ...

They are seeking a Full Stack Engineer to design and build features across both front-end and back-end systems, ensuring a seamless experience for customers and internal teams. Responsibilities : • ...

Full Stack Engineer Location: North Andover, MA (Local or nearby candidates only) Employment Type: Full Time Visa: USC/GC only Interview Process: Video Interview Urgency: Immediate requirement Job ...

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Freelance Full Stack Engineer information

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$44.5K

$134.8K

$190.5K

How much do freelance full stack engineer jobs pay per year?

As of Jun 19, 2026, the average yearly pay for freelance full stack engineer in the United States is $134,771.00, according to ZipRecruiter salary data. Most workers in this role earn between $111,000.00 and $158,000.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Freelance Full Stack Engineer, and why are they important?

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 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 cities are hiring for Freelance Full Stack Engineer jobs? Cities with the most Freelance Full Stack Engineer job openings:
What are the most commonly searched types of Full Stack Engineer jobs? The most popular types of Full Stack Engineer jobs are:
What states have the most Freelance Full Stack Engineer jobs? States with the most job openings for Freelance Full Stack Engineer jobs include:

Senior Full-Stack Engineer - LLM-Powered Code Review PoC

Fuku

San Francisco, CA • On-site

Full-time

Posted 20 days ago


Job description

Job Title: Senior Full-Stack Engineer (Freelance/Contract)
NexaFlow is seeking a Senior Full-Stack Engineer to develop a proof-of-concept code review tool powered by large language models (LLMs).
Key Responsibilities:
  • Design and implement a prototype tool that leverages LLMs to automatically review pull requests.
  • Integrate LLM APIs (OpenAI/Anthropic) to identify bugs, security vulnerabilities, and code style issues in code submissions.
  • Post contextual feedback directly on pull requests.
  • Handle the entire development process independently, from architecture through deployment.
  • Collaborate remotely with the NexaFlow team as needed.

Requirements:
  • 5+ years of full-stack development experience.
  • Proficiency in integrating LLM APIs such as OpenAI or Anthropic.
  • Experience developing code review tools and working with CI/CD pipelines.
  • Strong ability to independently manage end-to-end product development.
  • Backend expertise in Python or Node.js.
  • Frontend experience with React or Vue.
  • Familiarity with Docker-based deployment.

Additional Information:
  • This is a freelance/contract position, not a full-time employment role.
  • Location: San Francisco (remote friendly).

About Fuku

Sourced by ZipRecruiter

Industry

Food services and drinking places

Company size

51 - 200 Employees

Headquarters location

New York, NY, US

Year founded

2015