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Freelance Java Spring Developer Jobs in Washington, DC

Purple Drive Technologies

Java Developer

Mclean, VA · On-site

$51.50 - $66.75/hr

We are seeking a highly skilled Senior Java Developer with strong hands-on experience in Java, Spring Boot, and Angular (latest version) to design, develop, and deploy scalable enterprise ...

BTree Solutions, Inc.

FULLSTACK JAVA DEVELOPER

Mclean, VA · On-site

$53.50 - $69/hr

Senior Full Stack Engineer with expertise in Java, Spring Batch, Spring, Spring Batch, and Hibernate. * Proficient in Angular 15+, JavaScript/TypeScript. * Experienced with AWS services including ECS ...

TENAX Technologies

Java Developer

Washington, DC · On-site

$57.75 - $74.75/hr

Full Stack Java Developer (TS/SCI) Office of Naval Intelligence Support TENAX Technologies, LLC is ... Develop robust back-end services using Java, Spring Boot, Spring Framework, Hibernate/JPA, and ...

Tenax Technologies LLC

Java Developer

Washington, DC · On-site

$57.75 - $74.75/hr

Full Stack Java Developer (TS/SCI) - Office of Naval Intelligence Support TENAX Technologies, LLC ... Develop robust back-end services using Java, Spring Boot, Spring Framework, Hibernate/JPA, and ...

Tenax Technologies LLC

Java Developer

Washington, DC · On-site

$57.75 - $74.75/hr

Full Stack Java Developer (TS/SCI) - Office of Naval Intelligence Support TENAX Technologies, LLC ... Develop robust back-end services using Java, Spring Boot, Spring Framework, Hibernate/JPA, and ...

Belay Technologies

Java Developer

Hanover, MD · On-site

$170K - $191K/yr

The system includes a Java/Spring-based backend, REST APIs, and a web-based user interface. The engineer will independently implement features, contribute to the system architecture, and support full ...

Belay Technologies

Java Developer

Hanover, MD · On-site

The system includes a Java/Spring-based backend, REST APIs, and a web-based user interface. The engineer will independently implement features, contribute to the system architecture, and support full ...

Compugain

Java Developer 2

Rockville, MD · On-site

$52 - $67.25/hr

Bachelor's degree in Computer Science/Engineering and 4+ year of software development or the ... Java * Spring stack (DI, AOP, Security, Boot, etc.) * JPA/Hibernate/Spring * Design Patterns * REST ...

Compugain

Java Developer 2

Rockville, MD · On-site

$52 - $67.25/hr

Bachelor's degree in Computer Science/Engineering and 4+ year of software development or the ... Java * Spring stack (DI, AOP, Security, Boot, etc.) * JPA/Hibernate/Spring * Design Patterns * REST ...

Stem Xpert

Immediate need for Java developer

Herndon, VA · On-site

$52.50 - $67.75/hr

Java Developer + Backbone.JS (F2F Must) Location : Herndon, VA Duration : 6+ Months Note: For this ... Specialized knowledge & skills: 8+ years of hands on Development experience with JAVA, Spring ...

Aneesh Technologies Inc

Be Seen First

Java Backend Developer - Mid level

Ashburn, VA · Remote

$100K - $120K/yr

Java/J2EE & middleware (WebLogic, Apache, Spring Boot, etc.) technologies in UNIX/Linux environment and Scripting languages such as UNIX Shell • Collaborate with Leads & developers on solutions and ...

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

As of May 30, 2026, the average hourly pay for freelance java spring developer in Washington, DC is $64.22, according to ZipRecruiter salary data. Most workers in this role earn between $55.53 and $71.88 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Freelance Java Spring Developer, and why are they important?

To thrive as a Freelance Java Spring Developer, you need a solid understanding of Java programming, Spring Framework (including Spring Boot), and experience with RESTful APIs, typically supported by a degree in computer science or relevant certifications. Familiarity with tools like Maven, Git, Docker, and cloud platforms such as AWS or Azure is often required. Strong problem-solving, time management, and client communication skills help you stand out in this role. These competencies ensure you can deliver robust solutions efficiently while managing multiple clients and projects in a dynamic freelance environment.

What are the most common challenges faced by Freelance Java Spring Developers when working with multiple clients simultaneously?

Freelance Java Spring Developers often juggle projects for multiple clients, which can pose challenges such as managing shifting priorities, aligning with different coding standards, and keeping up with varied communication styles. Successfully navigating these requires strong organizational skills, clear project documentation, and proactive communication to set expectations. Additionally, freelancers must stay updated with the latest Spring framework updates to deliver high-quality, maintainable solutions across diverse client environments.

What is a Freelance Java Spring Developer?

A Freelance Java Spring Developer is a self-employed software professional who specializes in building, maintaining, and optimizing applications using the Java programming language and the Spring framework. These developers work on a contract or project basis for various clients, rather than as full-time employees for a single company. Their responsibilities often include designing backend systems, integrating APIs, and ensuring applications are scalable and secure. Freelance Java Spring Developers typically manage their own schedules and may work remotely for clients around the world.

What is the difference between Freelance Java Spring Developer vs Java Backend Developer?

AspectFreelance Java Spring DeveloperJava Backend Developer
CredentialsOften requires Java certifications, Spring certifications, and relevant experienceTypically requires a Java degree or equivalent experience, with or without certifications
Work EnvironmentIndependent, project-based, remote or on-site freelance workFull-time employment in a company or organization, often in an office setting
Employer & Industry UsageClients across various industries hiring for specific projectsEmployers in tech, finance, e-commerce, and other sectors with ongoing backend needs
Search & Comparison IntentLooking for freelance opportunities or contract work in Java Spring developmentSeeking full-time or permanent backend development roles in Java

In summary, Freelance Java Spring Developers typically work independently on short-term projects, requiring specific certifications and flexible work environments. Java Backend Developers usually hold full-time roles within organizations, focusing on ongoing backend system development.

What are the most commonly searched types of Java Spring Developer jobs in Washington, DC? The most popular types of Java Spring Developer jobs in Washington, DC are:
What are popular job titles related to Freelance Java Spring Developer jobs in Washington, DC? For Freelance Java Spring Developer jobs in Washington, DC, the most frequently searched job titles are:
What job categories do people searching Freelance Java Spring Developer jobs in Washington, DC look for? The top searched job categories for Freelance Java Spring Developer jobs in Washington, DC are:
Freelance Java Spring Developer jobs near you

Python Developer - With Java, SQL (W2 only)

Unique System Skills LLC

Washington, DC • On-site

Other

Posted 3 days ago

Job description

Senior Developer (Python / Java Spring Boot / SQL) | Numerix Oneview (Preferred)

Location / Work Model: On-site (McLean / DC Metro)
Type: Contract, 40 hrs/week
Start timing: ASAP (team is targeting onboarding before the new fiscal year)

About the Role

We re hiring a senior, hands-on Developer to support and enhance a Numerix-based platform used daily by the business (preferred experience: Numerix Oneview). This is a highly visible role where you ll help ensure smooth day-to-day operations, troubleshoot issues impacting outputs/results, and drive improvements across Python and Java services and underlying data (SQL).

You ll partner closely with business stakeholders and work alongside an offshore delivery team so strong communication, ownership, and problem-solving are critical.

What You ll Do
  • Support and enhance solutions that interact with Numerix (data in, outputs out) investigate discrepancies and drive resolution.
  • Build and modify components using Python, and contribute to services built on Java / Spring Boot.
  • Use SQL to validate data, troubleshoot issues, and support root-cause analysis.
  • Collaborate with business users to understand issues and translate them into technical fixes.
  • Coordinate with an offshore team and help guide work execution, quality, and prioritization.
  • Engage product/vendor support when needed bring clear technical context and help triage to resolution.
What We re Looking For
  • Strong hands-on development skills in:
    • Python
    • Java (Spring / Spring Boot)
    • SQL
  • Experience in production support / troubleshooting environments (you enjoy debugging and getting to root cause).
  • Excellent communication able to work directly with business stakeholders and technical teams.
Preferred Qualifications
  • Numerix Oneview experience (ideal).

If no Numerix: background in capital markets / financial services platforms or data-driven financial systems.

Apply