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Javascript Backend Developer Jobs in Florida (NOW HIRING)

Seven Seven Software

Front-end Developer

Saint Petersburg, FL · On-site

$98.30K - $114.40K/yr

Collaborate with back-end developers and web designers to improve usability * Get feedback from ... Experience with JavaScript, CSS, HTML, jQuery and C# * Familiarity with browser testing and ...

Marlabs LLC

React Full Stack Developer

Miami, FL

... back-end technologies. Technical Skills Required: - Expert-level proficiency in React, JavaScript ... Work with back-end developers to ensure seamless integration between front-end and back-end systems ...

RF-SMART

Technical Consultant I

Jacksonville, FL · On-site

Training will include time spent with developers and Business Analysts on multiple teams to learn ... JavaScript backend development/debugging * 1+ year(s) of software debugging/development in a formal ...

FIS

Backend Engineer

Jacksonville, FL

$97.94K - $195.66K/yr

Work with technologies such as Java, Javascript and Typescript, RESTful API integrations ... A degree in Computer Science, Software Engineering, or a related field is preferred. * Strong ...

Worldpay, Inc.

Backend Engineer

Jacksonville, FL

$97.94K - $195.66K/yr

Work with technologies such as Java, Javascript and Typescript, RESTful API integrations ... A degree in Computer Science, Software Engineering, or a related field is preferred. * Strong ...

RF-SMART

Technical Consultant I

Jacksonville, FL

Training will include time spent with developers and Business Analysts on multiple teams to learn ... JavaScript backend development/debugging * 1+ year(s) of software debugging/development in a formal ...

RF-SMART

Technical Consultant I

Jacksonville, FL

Training will include time spent with developers and Business Analysts on multiple teams to learn ... JavaScript backend development/debugging * 1+ year(s) of software debugging/development in a formal ...

Jobsbridge

Back End Engineer

Orlando, FL

Skill Elastic Search, Ruby, Javascript, Backbone, MySQL, and Java, Go, Apache Spark, Kafka Location ... You're familiar with engineering processes and can mitigate roadblocks Leadership experience - You ...

Jobsbridge

Back End Engineer

Orlando, FL

Skill Elastic Search, Ruby, Javascript, Backbone, MySQL, and Java, Go, Apache Spark, Kafka Location ... You're familiar with engineering processes and can mitigate roadblocks Leadership experience - You ...

Varsity Tutors

Web Development Tutor

Cooper City, FL · Remote

$40/hr

Deep knowledge of front-end technologies including HTML, CSS, and JavaScript, back-end development ... engineering careers. * Conceptual Teaching & Problem-Solving: Skilled at teaching full-stack ...

Varsity Tutors

Web Development Tutor

Tallahassee, FL · Remote

$40/hr

Deep knowledge of front-end technologies including HTML, CSS, and JavaScript, back-end development ... engineering careers. * Conceptual Teaching & Problem-Solving: Skilled at teaching full-stack ...

Varsity Tutors

Web Development Tutor

Hialeah, FL · Remote

$40/hr

Deep knowledge of front-end technologies including HTML, CSS, and JavaScript, back-end development ... engineering careers. * Conceptual Teaching & Problem-Solving: Skilled at teaching full-stack ...

Varsity Tutors

Web Development Tutor

Miami Beach, FL · Remote

$40/hr

Deep knowledge of front-end technologies including HTML, CSS, and JavaScript, back-end development ... engineering careers. * Conceptual Teaching & Problem-Solving: Skilled at teaching full-stack ...

Varsity Tutors

Web Development Tutor

Doral, FL · Remote

$40/hr

Deep knowledge of front-end technologies including HTML, CSS, and JavaScript, back-end development ... engineering careers. * Conceptual Teaching & Problem-Solving: Skilled at teaching full-stack ...

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How much do javascript backend developer jobs pay per hour?

As of May 29, 2026, the average hourly pay for javascript backend developer in Florida is $43.14, according to ZipRecruiter salary data. Most workers in this role earn between $35.38 and $51.01 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Javascript Backend Developer, and why are they important?

To thrive as a Javascript Backend Developer, you need strong proficiency in JavaScript (especially Node.js), knowledge of backend frameworks, and a solid understanding of databases such as MongoDB or PostgreSQL. Familiarity with development tools like Git, RESTful APIs, Docker, and cloud platforms, as well as relevant certifications, is highly valuable. Excellent problem-solving, teamwork, and communication skills help you collaborate effectively and deliver robust solutions. These abilities are crucial for building scalable, secure, and maintainable backend services that power modern applications.

What are the typical challenges a JavaScript Backend Developer faces when scaling applications for high traffic?

JavaScript Backend Developers, especially those working with Node.js, often encounter challenges related to handling high concurrency, optimizing database queries, and maintaining application performance under heavy load. Ensuring efficient memory management and implementing robust error handling are also critical when scaling. Working closely with DevOps and frontend teams to optimize APIs and monitor system health is essential for delivering reliable, scalable backend solutions.

What does a JavaScript Backend Developer do?

A JavaScript Backend Developer is responsible for building and maintaining the server-side logic, databases, and APIs that power web applications. They use JavaScript, often with frameworks like Node.js, to process requests, manage data, and ensure smooth communication between the frontend and backend of an application. Their work ensures that web applications are scalable, secure, and efficient. JavaScript Backend Developers also collaborate with frontend developers and other team members to deliver seamless user experiences.

What is the difference between Javascript Backend Developer vs Javascript Frontend Developer?

AspectJavascript Backend DeveloperJavascript Frontend Developer
Primary FocusServer-side development, APIs, databasesUser interface, client-side interactions
Required SkillsNode.js, databases, server managementHTML, CSS, JavaScript, UI frameworks
Work EnvironmentBack-end servers, cloud platformsWeb browsers, client devices
Common UsageBuilding APIs, server logicDesigning web pages, user experience

The main difference between a Javascript Backend Developer and a Javascript Frontend Developer lies in their focus areas. Backend developers handle server-side logic, databases, and APIs, while frontend developers focus on creating engaging user interfaces and client-side interactions. Both roles require JavaScript skills but apply them in different parts of web development projects.

What are popular job titles related to Javascript Backend Developer jobs in Florida? For Javascript Backend Developer jobs in Florida, the most frequently searched job titles are:
What job categories do people searching Javascript Backend Developer jobs in Florida look for? The top searched job categories for Javascript Backend Developer jobs in Florida are:
What cities in Florida are hiring for Javascript Backend Developer jobs? Cities in Florida with the most Javascript Backend Developer job openings:
Javascript Backend Developer jobs near you
Backend Engineer - AI Agents (Remote)

Backend Engineer - AI Agents (Remote)

Outlier AI

Miami, FL • Remote

Full-time

This job post has expired today. Applications are no longer accepted.

Job description

About the Project

Outlier helps the world’s most innovative companies improve their AI agents by providing human feedback. Do you want to shape the future of autonomous agents like OpenClaw?

We collaborate with leading AI organizations to train Large Language Models (LLMs) to function as proactive, multi-step agents. Our projects focus on teaching these systems how to design, coordinate, and optimize complex, real-world architectural workflows.

Whether you are a passionate orchestration guru or experienced software developer — we want you to help us train the world's most advanced generative systems.

Ideal Qualifications

  • 2+ years of experience in backend engineering, AI automation, or complex systems integration.
  • Proven ability to build and maintain production-grade software with modular separation (e.g., distinct services for data parsing, logic processing, and reporting).
  • Strong command of at least two major languages (e.g., Python, JavaScript, Go, or Java) and experience working with SQL databases.
  • Practical experience building for live, non-mocked environments and handling multi-turn system interactions.
  • Outstanding attention to detail and the ability to provide clear, high-density technical feedback on complex system behaviors.

Nice to have

  • Expertise building multi-stage coordination tasks where data acquisition leads to reasoned output.
  • Hands-on experience integrating agents with live tools such as Supabase, Gmail, and various APIs to solve real-world problems.
  • High level of comfort implementing persistent state and session discovery using MEMORY.md to track agent progress.
  • Experience identifying subtle failures like privacy leaks, authority escalation, or indirect prompt injections.

Apply