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Javascript Backend Developer Jobs in Pennsylvania

krg technology inc

Net Developer

Philadelphia, PA

$48.75 - $64.25/hr

... developer rendering page designs for large-scale, public-facing websites - HTML, CSS 5+ years ... Javascript UI technologies - JQuery, AJAX, the DOM and JSON Preferred Skills Consuming back-end / ...

The Pennsylvania State University

$15/hr

The Back-End Developer will research state-of-the-art algorithms in machine learning to identify ... Skilled in JavaScript or R. Knowledge of data structures and data management methods. Ability to ...

Delphinus Engineering

Back-End Engineer

Philadelphia, PA · Remote

$75K - $125K/yr

The Back-End Engineer will work with a modern tech stack to build and enhance software that ... Javascript, Kotlin, and other languages as needed. * Provide routine software maintenance ...

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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 Pennsylvania is $57.87, according to ZipRecruiter salary data. Most workers in this role earn between $47.45 and $68.41 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 Pennsylvania? For Javascript Backend Developer jobs in Pennsylvania, the most frequently searched job titles are:
What job categories do people searching Javascript Backend Developer jobs in Pennsylvania look for? The top searched job categories for Javascript Backend Developer jobs in Pennsylvania are:
What cities in Pennsylvania are hiring for Javascript Backend Developer jobs? Cities in Pennsylvania with the most Javascript Backend Developer job openings:
Javascript Backend Developer jobs near you
Infographic showing various Javascript Backend Developer job openings in Pennsylvania 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 $120,375 per year, or $57.9 per hour.
Sr. Java Backend Developer (Dojo Mobile)

Sr. Java Backend Developer (Dojo Mobile)

Sonsoft Inc

Harrisburg, PA

$119K - $154.50K/yr

Contractor

Posted 6 days ago

Job description

Company Description

Sonsoft , Inc. is a USA based corporation duly organized under the laws of the Commonwealth of Georgia. Sonsoft Inc. is growing at a steady pace specializing in the fields of Software Development, Software Consultancy and Information Technology Enabled Services.

Job Description

Serve as a senior level resource in design and development of backend systems for mobile applications. Primary duties will revolve around Java web services, database work, and WMB.

Role Description

Lead in design and development of backend systems for Mobile Applications.

Demonstrate expertise in wide range of backend systems and protocols, including WMB and IIB service development.

Propose comprehensive solutions based on business and technical requirements.

Create ball park estimates.

Participate in architecting, designing and developing user interface, service tier and data tier components for enterprise Mobile Applications.

Develop and document standards, architecture, repeatable processes, and reusable components.

Participate in project planning, including development of timelines, propose composition of technical teams, and leveling of resources.

Mentor team members on Department processes and standards to promote consistency and improve productivity.

Design and create database schemas in DB2 and Oracle RDBMSs.

Perform server side code reviews to ensure best practices.

Participate in the full SDLC process (including coding) of Mobile Application solutions using Java, Javascript, HTML5, CSS3, JSON, XML, JDBC, SQL, web services, WMB, and IIB.

Attend meetings, including daily standup meetings, on a daily basis.

Support product deployment and product validations on or off business hours.

Qualifications

Required Skills:

  • Education from an accredited institution. Required 5 Years
  • Experience with J2EE applications development. Required 10 Years
  • Experience in web Services design & development (SOAP/XML and REST/JSON) for enterprise. Required 5 Years
  • Experience in JavaScript HTML5, CSS3, Dojo and 1+ years in Dojo Mobile. Required 5 Years
  • Experience with relational database development using SQL. Required 8 Years
  • Experience with IBM Rational Products (RSA, RTC, WAS) Required 5 Years
  • Experience with IBM Integrated Bus and Websphere Message Broker. Required 2 Years
  • Experience with Single Sign On, SAML, LDAP, AD integration, OAuth. Desired
  • Experience working with mobile infrastructure teams for MDM, VPN and Security development. Desired
  • Experience developing web services, especially secured web services and web services with attachments Desired
Additional Information

This requisition requires onsite in-person first round interviews only.

** All your information will be kept confidential according to EEO guidelines.

Sonsoft logo

About Sonsoft

Sourced by ZipRecruiter

Sonsoft , Inc. is a USA based corporation duly organized under the laws of the Commonwealth of Georgia. Sonsoft Inc. is growing at a steady pace specializing in the fields of Software Development, Software Consultancy and Information Technology Enabled Services.

Industry

It services

Company size

51 - 200 Employees

Headquarters location

Alpharetta, GA, US

Year founded

2007

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