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Javascript Backend Developer Jobs in Wilmington, DE

SQLI

Drupal BackEnd Developer

Alloway, NJ · Hybrid

We are looking for a Drupal Backend Developer to join SQLI and work on a strategic digital platform ... Strong proficiency in PHP, with solid knowledge of JavaScript, HTML, and CSS. * Handson experience ...

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 / ...

Sarian, Inc.

Big Data, Hadoop Developer

Newark, DE · On-site

Knowledge of back-end programming languages including JavaScript, Node.js, and OOAD. * Familiarity with data loading tools including Squoop and Flume. * High-level analytical and problem-solving ...

Varsity Tutors

Web Development Tutor

Chester, PA · Remote

$18 - $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 ...

CYNET SYSTEMS

Angular UI Developer

Malvern, PA · On-site

$60 - $65/hr

Advanced knowledge of HTML5, CSS3, JavaScript, and TypeScript. * Hands-on experience with Git for ... Collaborate with UX designers and backend developers to deliver seamless user experiences.

Arka Infotech Inc

Hadoop Developer

Wilmington, DE · On-site

Hadoop Developer Location: Wilmington, DE Length: 2 years F2F REQUIRED Locals only Requirements ... back-end solutions written in Java - Proficiency with scripting languages (Python, Perl, JavaScript ...

Arka Infotech Inc

Hadoop Developer

Wilmington, DE · On-site

Hadoop Developer Location: Wilmington, DE Length: 2 years F2F REQUIRED Visa copy required for ... back-end solutions written in Java - Proficiency with scripting languages (Python, Perl, JavaScript ...

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All JobsJavascript Backend Developer JobsJavascript Backend Developer Jobs in Wilmington, DE

Javascript Backend Developer information

See Wilmington, DE salary details

$11

$56

$81

How much do javascript backend developer jobs pay per hour?

As of Aug 7, 2026, the average hourly pay for javascript backend developer in Wilmington, DE is $56.02, according to ZipRecruiter salary data. Most workers in this role earn between $45.96 and $66.25 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 Wilmington, DE? For Javascript Backend Developer jobs in Wilmington, DE, the most frequently searched job titles are:
What job categories do people searching Javascript Backend Developer jobs in Wilmington, DE look for? The top searched job categories for Javascript Backend Developer jobs in Wilmington, DE are:
Javascript Backend Developer jobs near you
Infographic showing various Javascript Backend Developer job openings in Wilmington, DE 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 $116,520 per year, or $56 per hour.

Sr. Java Backend Developer

Net Orbit

Wilmington, DE • On-site

$49 - $63.50/hr

Full-time

Re-posted 8 days ago

Job description

Sr. Java Developer
Wilmington, DE/NYC/Atlanta, GA
Need resumes. Resource with 10-15 years hands on and preferably able to lead teams. Working with distributed systems
• Strong Java programming skills
• Minimum of 10 years practical software development experience
• Robust object-oriented design pattern knowledge and implementation experience using Java; Java Backend Developer
• Java Developer - Preferable with Java 1.8 (java 8 features) experience
• Advanced knowledge and experience developing and working with relational databases such as Sybase/MySQL
• Experience with multi-tier application architecture and high performance distributed and in-memory caching solutions
• Strong understanding of data modeling techniques
• Working knowledge of building and deploying distributed systems is mandatory
• Experience with cloud technologies (e.g., Kubernetes, Docker, OpenStack) a plus
Must Have
Core/OOPS
• OOPs Concepts & Patterns
• Java Keywords - Static, Final, volatile, synchronized, transient, this super etc.
• Constructors
• Abstract Classes and Interfaces
• Dependency Injection
• Exceptions - Checked, Unchecked
Generics
• Collections - List, Map, Set
• Data Structures & Collections
Concurrency
• Multithreading and Synchronization
• Non-Blocking Collections/Utilities
Spring Framework:
• Spring Core(must)
• Spring Data
Misc.
• GIT
• Maven/Gradle
• Design Patterns
• Junit/Testing (Version 4+)
• Caching In general
Database / ORM
• Cursors (Good)
• SQL Queries - Inner Outer Joins, Group By, Having (Must)
• Stored Procedures (Good have)
• Triggers (Good)
• Hibernate
Good To Have
• IO & Serialization
• Memory management - Heap Dump/Thread dump /GC/Memory Tuning
• Spring Boot
• Messaging - JMS/Queues, Kafka / Cassandra
Web Applications
• Angular/TypeScript
• JSP / Servlets
• Mark-up Languages like XML and JSON
• Service Oriented Architecture / Web Services - SOAP / REST / gRPC
• Web Frameworks like Struts / Spring
• Web Technologies like HTML, CSS, JavaScript and JQuery

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