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Javascript Backend Developer Jobs in Jacksonville, FL

Robert Half

Web Developer

Jacksonville, FL · On-site

$90K - $110K/yr

This position centers on backend-focused Shopify development, platform connectivity, and scalable ... Strong coding ability in Liquid, JavaScript, HTML, and CSS. * Experience building or maintaining ...

New

Kavaliro

Senior Backend Software Engineer

Jacksonville, FL · On-site

$111K - $146K/yr

Kavaliro is seeking a Senior Backend Software Engineer for our local Jacksonville client. In this ... JavaScript, Perl, Qt UI, and batch scripting. * Familiarity with REST APIs and web service ...

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All JobsJavascript Backend Developer JobsJavascript Backend Developer Jobs in Jacksonville, FL

Javascript Backend Developer information

See Jacksonville, FL salary details

$11

$53

$78

How much do javascript backend developer jobs pay per hour?

As of Aug 18, 2026, the average hourly pay for javascript backend developer in Jacksonville, FL is $53.49, according to ZipRecruiter salary data. Most workers in this role earn between $43.89 and $63.27 per hour, depending on experience, location, and employer.

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 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 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 Jacksonville, FL?

For Javascript Backend Developer jobs in Jacksonville, FL, the most frequently searched job titles are:

What job categories do people searching Javascript Backend Developer jobs in Jacksonville, FL look for?

The top searched job categories for Javascript Backend Developer jobs in Jacksonville, FL are:

What cities near Jacksonville, FL are hiring for Javascript Backend Developer jobs?

Cities near Jacksonville, FL with the most Javascript Backend Developer job openings:

Javascript Backend Developer jobs near you
Infographic showing various Javascript Backend Developer job openings in Jacksonville, FL as of August 2026, with employment types broken down into 87% Full Time, and 13% Contract. Highlights an 87% In-person, and 13% Remote job distribution, with an average salary of $111,268 per year, or $53.5 per hour.

Web Developer

Robert Half

Jacksonville, FL • On-site

$90K - $110K/yr

Full-time

Posted 3 days ago

New

Job description

We are looking for a Web Developer to take ownership of our Shopify environment and help deliver a dependable, high-performing online shopping experience in Jacksonville, Florida. This position centers on backend-focused Shopify development, platform connectivity, and scalable feature delivery while also supporting updates within established design standards. You will collaborate closely with marketing and IT teams to strengthen site functionality, improve performance, and serve as the go-to internal resource for the eCommerce platform.
Responsibilities:
• Lead day-to-day development and support for the Shopify storefront, ensuring stable functionality, strong performance, and a smooth customer journey.
• Enhance and maintain custom applications and existing code to support business needs and long-term platform scalability.
• Manage and refine the connection between Shopify and NetSuite through Celigo, addressing reliability and data accuracy across systems.
• Investigate and resolve technical issues affecting orders, inventory synchronization, customer records, and other integrated processes.
• Design and implement new site capabilities, backend logic, and functional improvements based on operational and customer experience goals.
• Partner with marketing stakeholders to launch campaign pages, promotional updates, and tracking-related enhancements within the site.
• Optimize site speed, technical efficiency, and conversion-related functionality to improve overall eCommerce performance.
• Work across marketing and IT teams to deliver practical solutions and gradually transition platform knowledge from external consultants to internal ownership.• At least 3 years of hands-on experience developing and supporting Shopify websites.
• Strong coding ability in Liquid, JavaScript, HTML, and CSS.
• Experience building or maintaining custom Shopify apps and working with Shopify APIs.
• Solid background with system integrations, API connectivity, and data exchange concepts; exposure to GraphQL is preferred.
• Working knowledge of React, Node.js, and PostgreSQL.
• Ability to understand an established codebase, troubleshoot efficiently, and make reliable enhancements.
• Demonstrated independence, sound technical judgment, and strong problem-solving ability in a fast-moving environment.
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About Robert Half

Sourced by ZipRecruiter

Founded in 1948, Robert Half pioneered the idea of professional talent solutions to connect opportunities at great companies with highly skilled job seekers. As business needs changed, we evolved to offer specialized talent solutions for finance and accounting, technology, administrative and customer support, creative and marketing, and legal fields. In 2002, we introduced our subsidiary, Protiviti, a global independent risk consulting and internal audit service, to support companies as they faced more strategic business challenges.

Industry

Recruiting and staffing services

Company size

10,000+ Employees

Headquarters location

San Ramon, CA, US

Year founded

1948

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