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Javascript Backend Developer Jobs in Wisconsin (NOW HIRING)

DataAnnotation

$40/hr

We are looking for a Back End Developer to join our team to train AI models. You will measure the ... Your role will require proficiency in at least one programming language (JavaScript, Python, C#, C ...

DataAnnotation

$60/hr

We are looking for proficient programmers to help advance AI development. As a member of ... JavaScript, TypeScript, Python, C, C#, C++, React, Go, Java, or Swift. Excellent writing and ...

DataAnnotation

Backend Developer

Wausau, WI · On-site +1

$60/hr

We are looking for proficient programmers to help advance AI development. As a member of ... JavaScript, TypeScript, Python, C, C#, C++, React, Go, Java, or Swift. Excellent writing and ...

NET HEALTH SHOPS LLC

Lead Software Developer

Eau Claire, WI

$114.90K - $144.10K/yr

Lead Software Developer Job Type : Full-Time, Non-exempt Pay: Hourly, Biweekly Schedule: Monday ... Typescript/Javascript - back-end languages * Node.js - back-end runtime environments * Salesforce ...

Milliman

Back End Engineer

Brookfield, WI · On-site

$85.10K - $161.58K/yr

This position is for a back end engineer who wants to grow with our company. The initial role is an ... Experience with JavaScript, and examples of nodeJS system engineering as well as front end ...

DataAnnotation

$60/hr

We are looking for proficient programmers to help advance AI development. As a member of ... JavaScript, TypeScript, Python, C, C#, C++, React, Go, Java, or Swift. Excellent writing and ...

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$12

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How much do javascript backend developer jobs pay per hour?

As of May 28, 2026, the average hourly pay for javascript backend developer in Wisconsin is $58.27, according to ZipRecruiter salary data. Most workers in this role earn between $47.79 and $68.89 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 Wisconsin? For Javascript Backend Developer jobs in Wisconsin, the most frequently searched job titles are:
What job categories do people searching Javascript Backend Developer jobs in Wisconsin look for? The top searched job categories for Javascript Backend Developer jobs in Wisconsin are:
Javascript Backend Developer jobs near you
Infographic showing various Javascript Backend Developer job openings in Wisconsin as of May 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $121,209 per year, or $58.3 per hour.
Back End Developer

Back End Developer

DataAnnotation

Remote

$40/hr

Full-time, Part-time, Contractor

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

Job description

We are looking for a Back End Developer to join our team to train AI models. You will measure the progress of these AI chatbots, evaluate their logic, and solve problems to improve the quality of each model. To apply to this role, you will need to be proficient in either Python and/or JavaScript.

Your role will require proficiency in at least one programming language (JavaScript, Python, C#, C++, HTML, SQL, or Swift) in order to solve coding problems (think LeetCode, HackerRank, etc). For each coding problem, you must be able to explain how your solution solves the problem. Benefits This is a full-time or part-time REMOTE position You'll be able to choose which projects you want to work on You can work on your own schedule Projects are paid hourly starting at $40+ USD per hour, with bonuses on high-quality and high-volume work Responsibilities Give AI chatbots coding challenges and evaluate their outputs Evaluate the quality produced by AI models for correctness and performance Qualifications Fluency in English (native or bilingual level) Detail-oriented Experience with algorithms, data structures, and debugging workflows A current, in progress, or completed Bachelor's degree is preferred but not required Notes Payment is made via PayPal.

We will never ask for any money from you. PayPal will handle any currency conversions from USD. Only applicants in the United States will be considered for this role.

This is an independent contract position. #coder #J-18808-Ljbffr

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