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Freelance Java Back End Developer Jobs in Philadelphia, PA

Mirai, LLC

Full Stack Java Developer

Philadelphia, PA · On-site

$53 - $68.25/hr

The Developer will be part of a product team of designers and full-stack developers (Java back-end) developing a web and mobile application for use by the Front Line Associates & Managers in the ...

Mirai, LLC

Full Stack Java Developer

Philadelphia, PA

$53 - $68.25/hr

The Developer will be part of a product team of designers and full-stack developers (Java back-end) developing a web and mobile application for use by the Front Line Associates & Managers in the ...

Ampcus Inc

Java Full Stack Developers

Wilmington, DE · On-site

$51 - $65.75/hr

... Developer. The role involves working on system design, application development, and ensuring ... Required : • 3 years of experience in Java backend, Microservices, Spring Boot, ReactJS, and AWS ...

Mondo

Sr. Backend Engineer

Media, PA · Remote

$90 - $105/hr

  • Medical

  • Dental

  • Vision

  • Retirement

Senior Backend Software Engineer (Java/Go), Hybrid - Onsite 4 Days/Week. Start date is ASAP for this Contract position. Job Title: Senior Backend Software Engineer (Java/Go) Location-Type: Hybrid ...

AllSTEM Connections

Java Developer Contractor

Malvern, PA · On-site

$51.50 - $66.50/hr

  • Medical

  • Dental

  • Vision

  • Retirement

Job Title: Senior Full-Stack Java Developer - Contract Role Overview We are seeking a highly ... Moving seamlessly between backend system architecture and modern front-end design, you will ...

Comcast

Sr. Backend Engineer - Xumo

Philadelphia, PA · Remote

As a Senior Backend Engineer on the Xumo Software Engineering Team, you will play a key role in ... Java Application Development for Video Streaming Backend Systems * Develop backend systems for ...

AllSTEM Connections

Java Developer Contractor

Malvern, PA · On-site

$93K - $104K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

Job Title: Senior Full-Stack Java Developer - Contract Role Overview We are seeking a highly ... Moving seamlessly between backend system architecture and modern front-end design, you will ...

SmartIPlace

Staff Engineer - SN

Blue Bell, PA · On-site

Blue Bell, PA Requirement The Staff Engineer I (Java) provides senior technical leadership for backend Java development supporting the Workflow Orchestration Initiative, delivering scalable and ...

Prophecy Technologies

Java Developer

Wilmington, DE · On-site

$49.50 - $64/hr

Job Summary JPMorgan Chase is seeking an experienced Java Full Stack Developer with strong ... Create Python scripts and applications for automation, data processing, and backend services.

RIT Solutions, Inc.

API/Backend Engineer

Malvern, PA · On-site

... DevOps model. • Contribute to the ongoing modernization of legacy components across various ... Required : • Expert proficiency in Java and Spring Boot for API development. • Extensive, hands ...

RIT Solutions, Inc.

API Backend Engineer

Malvern, PA · On-site

... DevOps model. • Contribute to the ongoing modernization of legacy components across various ... Required : • Expert proficiency in Java and Spring Boot for API development. • Extensive, hands ...

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All JobsJava Back End Developer JobsFreelance Java Back End Developer JobsFreelance Java Back End Developer Jobs in Philadelphia, PA

Freelance Java Back End Developer information

See Philadelphia, PA salary details

$10

$55

$73

How much do freelance java back end developer jobs pay per hour?

As of Aug 19, 2026, the average hourly pay for freelance java back end developer in Philadelphia, PA is $55.13, according to ZipRecruiter salary data. Most workers in this role earn between $48.99 and $63.56 per hour, depending on experience, location, and employer.

What does a freelance Java back end developer do?

A Freelance Java Back End Developer is a software professional who specializes in building and maintaining the server-side logic of web applications using the Java programming language. They work independently on a contract basis for various clients, handling tasks such as developing APIs, managing databases, and ensuring the performance and security of the application’s back end. Their responsibilities often include collaborating with front-end developers, integrating third-party services, and troubleshooting server-side issues. Freelancers in this role can work remotely or onsite, offering flexibility to both clients and developers.

What are the key skills and qualifications needed to thrive as a freelance Java back end developer, and why are they important?

To thrive as a Freelance Java Back End Developer, you need strong proficiency in Java, object-oriented programming, RESTful API design, and experience with frameworks like Spring or Hibernate, typically supported by a relevant degree or proven project portfolio. Familiarity with version control systems (such as Git), build tools (like Maven or Gradle), cloud platforms, and continuous integration/continuous deployment (CI/CD) pipelines is highly valued. Outstanding problem-solving abilities, self-motivation, and effective client communication set top freelancers apart. These skills ensure you can deliver robust, maintainable solutions independently and build lasting client relationships.

What are some common challenges faced by freelance Java back end developers when working with multiple clients simultaneously?

Freelance Java Back End Developers often juggle several projects at once, which can present challenges in time management, prioritizing tasks, and aligning with different client expectations. Each client may use distinct tech stacks, communication tools, and development processes, requiring adaptability and strong organizational skills. Clear communication, setting realistic deadlines, and using project management tools can help freelancers maintain quality and meet deliverables across diverse projects.

What is the difference between Freelance Java Back End Developer vs Freelance Java Software Engineer?

AspectFreelance Java Back End DeveloperFreelance Java Software Engineer
CredentialsJava certifications, experience in backend frameworksJava certifications, broader software development skills
Work EnvironmentRemote, project-based, client-specificRemote or on-site, project or product-focused
Industry UsagePrimarily in backend development projectsInvolved in full software development lifecycle
Search & Comparison IntentFocus on backend Java skillsBroader software development expertise

While both roles involve Java skills, a Freelance Java Back End Developer specializes in server-side development, focusing on backend systems. A Freelance Java Software Engineer may have a broader scope, including full-stack or application development, often requiring additional skills beyond backend work.

What are the most commonly searched types of Java Back End Developer jobs in Philadelphia, PA?

The most popular types of Java Back End Developer jobs in Philadelphia, PA are:

What are popular job titles related to Freelance Java Back End Developer jobs in Philadelphia, PA?

For Freelance Java Back End Developer jobs in Philadelphia, PA, the most frequently searched job titles are:

What job categories do people searching Freelance Java Back End Developer jobs in Philadelphia, PA look for?

The top searched job categories for Freelance Java Back End Developer jobs in Philadelphia, PA are:

Freelance Java Back End Developer jobs near you
Infographic showing various Freelance Java Back End Developer job openings in Philadelphia, PA as of August 2026, with employment types broken down into 57% Full Time, and 43% Contract. Highlights an 100% In-person job distribution, with an average salary of $114,664 per year, or $55.1 per hour.

Full Stack Java Developer

Mirai, LLC

Philadelphia, PA • On-site

$53 - $68.25/hr

Contractor

Re-posted 8 days ago

Job description

Company Description
Mirai, LLC is an enterprise level healthcare, finance, and technology solutions firm with a strong focus on bridging the gap between Eastern and Western global markets. We pride ourselves on being able to deliver solutions with a perfect blend of onsite, onshore and offshore resources that achieve the right balance between cost and control, all the while insulating our customers from language, cultural and time zone challenges.
Job Description
The Developer will be part of a product team of designers and full-stack developers (Java back-end) developing a web and mobile application for use by the Front Line Associates & Managers in the field.
Responsibilities Include:
  • Lead products through iterative design, development, and delivery
  • Maintain a user-centered approach in design & development perspective and practice
  • Work as a collaborative team member with internal customers, designers, and fellow engineer
  • Apply best practice approaches and guide the product team through the process
  • Rapidly iterate on prototypes and working applications

Qualifications
Requirements:
  • Have experience with and curiosity of Agile and Lean philosophies
  • Experience working with small teams to ship products to market
  • Have experience developing full-service consumer, employee, and business applications
  • Experience with designing and refactoring complex systems
  • Language agnostic and experienced polyglot
  • Passion for Working Software and SOLID principles
  • Experience with Test Driven Development (TDD)
  • Interest in working in a pair-programming environment
  • 3-5 years of experience working with Java/Kotlin
  • Experience with Spring Boot, and API design
  • Fundamental understanding and experience working with JPA data
  • Working knowledge of Message Brokers and Messaging subsystems (experience working with Kafka a strong plus)
  • Strong understanding of best practices creating/working with Micro-services
  • 3-5 years' experience or equivalent in software development
  • Deep understanding of design patterns and applying them in production environments
  • Bachelor's or Master's degree in computer science discipline (preferred, but not required)
  • Passion for enabling team members

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

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