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Freelance International Full Stack Developer Jobs

Alignerr

Full Stack Developer What if your years of full-stack experience could directly shape how AI writes ... Freelance autonomy with the satisfaction of structured, high-impact technical work * Make a ...

24x7 Direct

Full Stack Developer This is a remote position. Philippine-based (Filipino) Applicants TECHNICAL ... Treating this as a long-term, full-time job--not a side gig or freelance task Payroll is processed ...

New

DataAnnotation

Full Stack Developer

Manhattan, NY · Remote

$40/hr

Join to apply for the Full Stack Developer role at DataAnnotation Join to apply for the Full Stack ... Freelance, Remote) United States $200,000.00-$380,000.00 1 week ago We're unlocking community ...

Ai-blox | Edge AI Computers

Join our international team of passionate people who design and build state-of-the-art computer infrastructure for physical AI applications. As a Full Stack Developer, you will play a pivotal role in ...

Samprasoft

Full Stack Developer

Bedford, MA · On-site

You will work in an international and multicultural team. Must Have: 5+ years of experience as a full stack development engineer (Java, React JS) preferably in biopharmaceutical environment. You have ...

Ironclad Defense Works

Full Stack Developer

Norfolk, VA · On-site

$96K - $149K/yr

Prior experience supporting NATO, DoD, or international defense organizations. How to Apply Email your resume to jobs@idw.inc with the subject line: "RFP-ACT-SACT-26-02 - LC10 - Full-Stack Developer ...

Ironclad Defense Works

Full Stack Developer

Norfolk, VA · On-site

$96K - $110K/yr

Prior experience supporting NATO, DoD, or international defense organizations. How to Apply Email your resume to jobs@idw.inc with the subject line: "RFP-ACT-SACT-26-02 - LC10 - Full-Stack Developer ...

Samprasoft

Full Stack Developer

Arlington, VA · On-site

Senior Full-Stack Developer The Senior Full-Stack Developer shall be responsible for participating in the full life-cycle development process including requirements analysis, system design ...

DHD Consulting

Full Stack Developer

Secaucus, NJ · On-site

Full Stack Developer Secaucus, New Jersey, United States $ None - None (US Dollar) Job Openings Full Stack Developer About the Job Full Stack Developer Full Stack Developer We are looking for a full ...

Next Step Systems

Full Stack Developer

Washington, DC · On-site

Full Stack Developer, Washington DC We are seeking a Full Stack Developer to work on a team building custom software for great customers using modern technologies and Agile methods. The Full Stack ...

Samprasoft

Full Stack Developer

Mclean, VA · Hybrid

Full Stack Developer Location: Must be local to Mclean, VA (hybrid, Mon & Fri remote/Tue-Thu onsite) Title: Fullstack Developer Must haves: * Full stack engineers - 50/50 front and back. * UI in ...

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How much do freelance international full stack developer jobs pay per hour?

As of May 28, 2026, the average hourly pay for freelance international full stack developer in the United States is $59.26, according to ZipRecruiter salary data. Most workers in this role earn between $49.28 and $68.27 per hour, depending on experience, location, and employer.

What is the difference between Freelance International Full Stack Developer vs Freelance Web Developer?

AspectFreelance International Full Stack DeveloperFreelance Web Developer
Skills & CredentialsProficiency in both frontend and backend technologies, often with certifications in programming languages and frameworksSpecializes mainly in frontend or backend development, with skills focused on specific technologies like HTML, CSS, JavaScript, or PHP
Work EnvironmentRemote, often collaborating with international clients across industriesPrimarily remote, working on website or web app projects for various clients
Industry UsageCommon in tech, startups, and companies needing full project developmentFrequent in small businesses, marketing agencies, and freelance platforms

While both roles involve web development, a Freelance International Full Stack Developer handles both frontend and backend tasks across diverse projects globally, whereas a Freelance Web Developer typically specializes in either frontend or backend development for specific website projects.

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Freelance International Full Stack Developer jobs near you

Full Stack Developer

Alignerr

Remote

Full-time

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

Job description

Full Stack Developer

What if your years of full-stack experience could directly shape how AI writes, evaluates, and reasons about code for millions of developers worldwide? We're looking for seasoned Full Stack Developers to work with leading AI research teams — reviewing AI-generated code, stress-testing system designs, and helping build the tools that make AI smarter across the entire web stack.

This is a fully remote, flexible contract role built for experienced engineers who want to do meaningful, high-impact work on their own schedule.

  • Organization: Alignerr
  • Type: Hourly Contract
  • Location: Remote
  • Commitment: 10–40 hours/week

What You'll Do

  • Evaluate AI-generated code across the full stack — from frontend interfaces (React, Vue) to backend logic (Node.js, Python, C#)
  • Identify bugs, architectural weaknesses, and performance bottlenecks in AI-produced code and designs
  • Design and build full-stack tooling to support AI data annotation and quality control workflows
  • Review complex system architectures and provide expert feedback on scalability, reliability, and efficiency
  • Write clear, structured technical feedback that helps improve AI model outputs
  • Work independently and asynchronously — fully on your own schedule

Who You Are

  • 3–5+ years of professional full-stack development experience shipping production-grade code
  • Strong proficiency across JavaScript/TypeScript, Python, and Rust
  • Comfortable working across both frontend and backend layers without hand-holding
  • Sharp eye for code quality, system design, and engineering best practices
  • Excellent written communicator — you can explain complex technical decisions clearly and precisely
  • Master's or PhD in Computer Science or a related technical field from a reputable institution

Nice to Have

  • Experience with distributed systems, microservices, or high-scale infrastructure
  • Background in developer tooling, CI/CD pipelines, or platform engineering
  • Familiarity with AI/ML workflows, model evaluation, or data annotation pipelines
  • Prior experience in code review, technical writing, or engineering mentorship

Why Join Us

  • Work directly with world-leading AI research labs on cutting-edge model development
  • Fully remote and async — work when and how it suits you
  • Freelance autonomy with the satisfaction of structured, high-impact technical work
  • Make a tangible difference in how AI understands, writes, and evaluates code at scale
  • Ongoing contract potential as new AI training projects continue to launch

Apply