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Freelance Java Developer C2C Jobs in Leesburg, VA

Dark Wolf Solutions

Senior Data Engineer

Herndon, VA · On-site

$150K - $175K/yr

... DevOps practices and modern programming languages and frameworks to develop and engineer data ... We do not engage with third-party staffing agencies, C2C, or 1099 independent contractors for this ...

PETADATA

Business Analyst

Reston, VA · On-site

C2C Experience: 15+ Years Visa Type: H1B, and PETADATA is looking for a Senior Documentum ... Proficient in Java, Documentum Foundation Classes (DFC), SQL, and other relevant programming ...

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How much do freelance java developer c2c jobs pay per hour?

As of Aug 13, 2026, the average hourly pay for freelance java developer c2c in Leesburg, VA is $57.35, according to ZipRecruiter salary data. Most workers in this role earn between $49.62 and $64.18 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a freelance Java developer C2C?

To thrive as a Freelance Java Developer C2C, you need advanced proficiency in Java programming, object-oriented design, and experience with frameworks like Spring or Hibernate, usually complemented by a relevant degree or certifications. Familiarity with code repositories (Git), build tools (Maven/Gradle), cloud platforms, and knowledge of contract work requirements are important for handling diverse client projects. Outstanding time management, communication, and problem-solving skills set top freelancers apart in remote, client-focused environments. These skills ensure timely delivery of robust solutions, effective client relationships, and sustained success in a competitive freelance market.

What is a freelance Java developer C2C?

A Freelance Java Developer C2C (Corp-to-Corp) is an independent contractor who provides Java development services through their own corporation or business entity, rather than as a direct employee. In a C2C arrangement, the developer's company enters into a contract with a client company to deliver software solutions using the Java programming language. This setup is common in the United States and often used for project-based or temporary work, allowing both parties flexibility and clear business-to-business terms. Freelance Java Developers C2C are responsible for their own taxes, benefits, and business expenses.

What are the common challenges faced by freelance Java developers working on a C2C (Corp-to-Corp) basis, and how can they be managed?

Freelance Java Developers working on a C2C basis often encounter challenges such as managing multiple client projects simultaneously, ensuring clear communication despite remote collaboration, and staying updated with the latest Java technologies. Additionally, they must handle their own contracts, invoicing, and compliance with tax regulations independently. To manage these challenges effectively, it's important to establish transparent communication channels with clients, set clear project expectations and deadlines, and utilize project management tools to track progress. Regularly investing time in professional development and networking can also help freelancers stay competitive in the market.
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Senior Data Engineer

Dark Wolf Solutions

Herndon, VA • On-site

$150K - $175K/yr

Full-time, Contractor

Re-posted 27 days ago

Job description

Dark Wolf is looking for a Senior Data Engineer to join our team in Herndon, VA supporting the Defense Health community. This position will have hybrid/remote flexibility. The Data Engineer will be responsible for designing, building, and optimizing robust data pipelines and data infrastructure to ensure the reliability, accessibility, and quality of operational medicine data for analytics and mission-critical applications. The ideal candidate will leverage extensive experience with data engineering principles, DevSecOps best practices, and Test Driven Development (TDD) principles to rapidly develop and deliver first-class, customer-centric software solutions. They will utilize leading languages and frameworks, including Python (FastAPI), AWS, SQL (Trino SQL), and Rancher Kubernetes, to develop high-performance data engineering solutions, automate testing, and ensure delivered software meets and exceeds customer needs, all while working collaboratively within a dedicated team.
Key Responsibilities:
  • Using DevSecOps best practices to rapidly develop and deliver first class solutions for a DoW customer.
  • Developing software using leading languages and frameworks including Python (FastAPI), AWS, SQL (Trino SQL), and Rancher Kubernetes.
  • Building high-throughput data pipelines that aggregate, standardize, and process large volumes of heterogeneous data with Apache Spark, DBT, and Trino.
  • Establishing RESTful API endpoints that rapidly return large volumes of analytical health data.
  • Taking ownership of project domains and quickly becoming proficient in novel subjects.
  • Leveraging Test Driven Development and User Centered design best practices automate testing and ensure delivered software meets and exceeds customer needs.
  • Applying software design best practices to identify and analyze potential solutions, generate design diagrams to convey and capture system design, and participate in technical exchange meetings to discuss with the team and customer stakeholders.
  • Embracing a shared responsibility for system security.
  • Continuously engaging with project teams to deliver quality products.
  • Participating in daily standups, sprint planning/review meetings, discover and framing workshops, and customer demo sessions.

Required Qualifications:
  • B.S. in Computer Science (or equivalent experience) and at least 8 years of professional experience working as part of an Agile team using DevOps practices and modern programming languages and frameworks to develop and engineer data-related services and applications to cloud platforms
  • Experience with modern programming languages and frameworks including Python (FastAPI, Django, Flask), JavaScript (Node.js, Express, Vue, Svelte, React), and Java (Spring Boot)
  • Experience developing data focused solutions to include experience designing and implementing OpenAPI compliant data schemas and REST APIs, implementing data persistence and query logic using Object Relational Mapping (ORM) libraries and SQL, and implementing data validation business rules
  • Experience developing AWS cloud solutions with a specific focus on data services such as S3, RDS, and EMR
  • Experience building scalable, production-grade data solutions that can be used by thousands of data consumers concurrently
  • US Citizenship and an active Secret security clearance

Desired Qualifications:
  • M.S in Computer Science or related
  • Experience with AI/ML
  • Experience with Kubernetes (Rancher RKE2, AWS EKS) and microservice architectures
  • Experience with data engineering and big data technologies such as Apache Airflow, Trino, and AWS EMR
  • Experience with NIST Risk Management Framework and security accreditation process and tasks
  • Experience with HL7, FHIR, and Mirth Connect
  • Experience with dbt and Apache Spark
  • Familiarity with Great Expectations, data contracts, and data validation

This position has hybrid schedule flexibility. The salary range is expected to be between $150,000 to $175,000, commensurate on experience.
We are proud to be an EEO/AA employer Minorities/Women/Veterans/Disabled and other protected categories.
We are strictly looking for direct, full-time W2 employees. We do not engage with third-party staffing agencies, C2C, or 1099 independent contractors for this role.
In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.

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