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Freelance Java Backend Developer Jobs in Claymont, DE

Sr. Java Backend Developer

Wilmington, DE · On-site

$49 - $63.50/hr

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 ...

Sr. Java Backend Developer

Wilmington, DE · On-site

$49 - $63.50/hr

Java Backend DeveloperJava Developer - Preferable with Java 1.8 (java 8 features) experience • Advanced knowledge and experience developing and working with relational databases such as Sybase ...

Backend Java

Malvern, PA · On-site

$49.50 - $64.25/hr

Java Backend Developer Location: Onsite 3 days a week in Malvern PA Duration: Long term Rate: DOE Skills tested: Java, Springboot, AWS Must have 8+ years of experience - heavy backend Required ...

Java Developer(mid-level)

Wilmington, DE · On-site

$49.50 - $64/hr

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 ...

Java Developer(mid-level)

Wilmington, DE · On-site

$49.50 - $64/hr

Java Backend DeveloperJava Developer - Preferable with Java 1.8 (java 8 features) experience • Advanced knowledge and experience developing and working with relational databases such as Sybase ...

Write clean, maintainable backend code in Java and Python, with an emphasis on performance and ... engineering solutions. Required Technical Skills Core Languages: Proficient in Java (Spring Boot ...

Backend Java Developer

Newark, DE · On-site

$49.50 - $64.25/hr

Backend Java Developer (W2 Only) Local or Near by Newark, DE Introduction: We are seeking a talented Backend Java Developer to join our team in Newark, DE. The ideal candidate will be responsible for ...

New

Java FSD

Wilmington, DE · On-site

$49.50 - $64/hr

Java FSD with AWS An FSD/FSPE has an "end to end product" mindset - design, implementation, testing and deployment, and adds an additional skill (s) on top of traditional front/back-end developer ...

Java FSD

Wilmington, DE · On-site

$49.50 - $64/hr

... front/back-end developer role * Design and developer application using Core Java * Design and ... developer application using J2EE. Experience in J2EE design patterns * Create/consume Rest APIs ...

Java FSD

Wilmington, DE · On-site

$49.50 - $64/hr

... front/back-end developer role * Design and developer application using Core Java * Design and ... developer application using J2EE. Experience in J2EE design patterns * Create/consume Rest APIs ...

Senior Java Developer with AWS

Malvern, PA · On-site

$56.25 - $71.75/hr

Backend Developer (AWS, Python, Java ) 2 Positions- Only W2 Location: Malvern, PA (Hybrid 3 days in office and 2 days remote) Duration: 12 Months Key responsibilities Design and develop backend ...

Java FSD with AWS

Wilmington, DE · On-site

$49.50 - $64/hr

... back-end developer role Design and developer application using Core Java Design and developer application using J2EE. Experience in J2EE design patterns Create/consume Rest APIs & Microservices ...

Java FSD with AWS

Wilmington, DE · On-site

$49.50 - $64/hr

... back-end developer role Design and developer application using Core Java Design and developer application using J2EE. Experience in J2EE design patterns Create/consume Rest APIs & Microservices ...

Backend Java Developer

Newark, DE · On-site

$49.25 - $64/hr

Java/J2ee, Oracle Backend, WebSphere, Kafka, spring boot, OpenShift, containerization, Kubernetes Position Summary Senior Application Developer will be responsible/need to understanding business ...

AWS Backend Engineer (Java/Go) Location: Malvern, PA Employment Type: Full-Time / Contract Job Summary We are seeking an experienced AWS Backend Engineer with strong expertise in Java and Go to build ...

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Showing results 1-20

Freelance Java Backend Developer information

See Claymont, DE salary details

$9

$53

$71

How much do freelance java backend developer jobs pay per hour?

As of Aug 19, 2026, the average hourly pay for freelance java backend developer in Claymont, DE is $53.30, according to ZipRecruiter salary data. Most workers in this role earn between $47.36 and $61.44 per hour, depending on experience, location, and employer.

What are the most commonly searched types of Java Backend Developer jobs in Claymont, DE?

The most popular types of Java Backend Developer jobs in Claymont, DE are:

What cities near Claymont, DE are hiring for Freelance Java Backend Developer jobs?

Cities near Claymont, DE with the most Freelance Java Backend Developer job openings:

Sr. Java Backend Developer

NetOrbit

Wilmington, DE • On-site

$49 - $63.50/hr

Other

Re-posted 20 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 /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