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Freelance Java Backend Developer Jobs in Wilmington, DE

Saransh Inc

Android Developer - Onsite

Wilmington, DE · On-site

$54 - $71/hr

Work with backend engineers to integrate mobile applications with backend services. * Troubleshoot ... Strong proficiency in Kotlin and Java programming languages. * Solid understanding of Android SDK ...

Spruce Infotech Inc

Sr. Java Developer

Wilmington, DE · On-site

$55.50 - $70.75/hr

Provide expert knowledge and guidance for acquisition related backend Java and/or frontend Web features. Ensure that the development teams are adhering to the client SDLC process. Provide technical ...

Vangard, Inc.

Cloud Engineer

Malvern, PA · On-site

$54.75 - $73/hr

Familiarity with Java back-end technologies, APIs, and microservices architecture. * Strong understanding of cloud-native architectures, CI/CD pipelines, DevOps practices, and modern software ...

Vanguard Group, Inc.

Cloud Engineer

Malvern, PA · On-site

$54.75 - $73/hr

Familiarity with Java back-end technologies, APIs, and microservices architecture. * Strong understanding of cloud-native architectures, CI/CD pipelines, DevOps practices, and modern software ...

CYNET SYSTEMS

Angular UI Developer

Malvern, PA · On-site

$60 - $65/hr

Collaborate with UX designers and backend developers to deliver seamless user experiences ... Knowledge of backend development for integration purposes using Java. * Experience with Pandas and ...

Avani Technology Solutions, Inc.

Java Lead

Radnor, PA · On-site

... back end using SQL procedures 5. JBOSS General Description: This position is responsible for ... developers and escalate technical and other project risks related to project milestone dates.

Apton Inc

Java Fullstack

Wilmington, DE · On-site

$51 - $65.75/hr

Strong frontend and backend development experience * AWS, including: * EC2 * S3 * AWS Lambda and/or other serverless technologies

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

As of Sep 7, 2026, the average hourly pay for freelance java backend developer in Wilmington, DE is $53.01, according to ZipRecruiter salary data. Most workers in this role earn between $47.12 and $61.11 per hour, depending on experience, location, and employer.

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

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

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

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Java Architect

Tata Consultancy Service Limited

Newark, DE • On-site

$120K - $130K/yr

Full-time

Re-posted 7 days ago

Job description

Java Architect
• Define application architecture and system design
• Mentor development teams and establish best practices
• Create comprehensive design documents (HLD and LLD)
• Drive the implementation of microservices architecture
• Support CI/CD processes and DevOps practices
Requirements:
• 8+ years of strong Java (Java 8/11/17+)
• Experience with Spring technologies and REST APIs
• Familiar with Kafka/RabbitMQ messaging systems
• Cloud experience in AWS, Azure, or GCP
• Proficient in Docker, Kubernetes, and CI/CD tools Bring your architectural knowledge to a role that emphasizes growth and collaboration
• Hands on coding, need to clear coding test
Key Responsibilities:
• Lead the design and development of robust, scalable, and maintainable backend systems, ensuring adherence to high and basic design principles
• Lead database architecture and optimization efforts, with a focus on performance and data integrity
Qualifications:
• Minimum of 10 years of experience in Java development, with a strong focus on Spring Boot and backend architecture
• Strong understanding of cloud architectures, preferably with relevant certification (AWS).Expert knowledge of both SQL and NoSQL databases
• Proven track record in designing and implementing complex system integrations
• Strong background in test-driven development and automated testing frameworks
• Responsibilities
• Collaborate with cross-functional teams to design and implement integration solutions, ensuring seamless data flow across systems
• Apply SRE principles to enhance system reliability, performance, and availability
• Utilize container technologies such as Docker, Kubernetes, and OpenShift to streamline deployment and orchestration of applications
• Leverage Spring Boot to develop microservices and backend applications, applying best practices and design patterns
• Design and implement RESTful APIs, ensuring high performance and responsiveness to requests
• Guide the creation of responsive and intuitive user interfaces using modern JavaScript frameworks, with a focus on React
• Write unit and integration tests using JUnit, Mockito, or PowerMock, and ensure adherence to quality and security standards using tools like Sonar, Fortify, and Web Inspect
• Produce comprehensive documentation for each microservice, detailing architecture, design decisions, and implementation guidelines
• Participate in Agile development processes, contributing to sprint planning, reviews, and retrospectives
• Proactively identify and resolve bugs and performance issues in a timely manner
• Engage in database design and optimization for integration systems, ensuring efficient data management and retrieval
Salary Range- $120,000-$130,000 a year
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