Full Time Freelance Java Developer Jobs in Fairfax, VA

Job ID: 2612914

Location: Ashburn, VA, US

Date Posted: 2026-05-26

Category: Software

Subcategory: SW Engineer

Schedule: Full-Time

Shift: Day Job

Travel: No

Minimum Clearance Required: None

Clearance Level Must Be Able to Obtain: Public Trust

Potential for Remote Work: ORA_ON_SITE

Description

SAIC is currently seeking a motivated, career and customer-oriented Backend Developer (Senior) to join our team to begin an exciting and challenging career in Ashburn, VA.

This position requires on-site work in Ashburn, VA 5 days per week for the first year of employment.

Job Responsibilities

• Working closely with the tech lead and senior developers, the Mid-Level Java Developer will participate in the system architecture design, systems engineering, development, integration testing and validation, and all aspects of the software life-cycle (requirements to design to implementation to test) for a java backend application involving extensive messaging and transaction processing.
• Design and implement Micro Service Architecture for Cloud based software applications.
• Use modern software engineering tools including Eclipse, Jira, and Atlassian Suites for design, development, and testing the software.
• Present the solution at formal and informal design reviews, and document the design according to the Government’s system lifecycle methodology.

Qualifications

Required Skills and Experience

• Bachelor's degree in computer science or related engineering field with 9+ years of technical experience.
• 9+ years of strong Java design and software development experience including designing, developing, and documenting large-scale enterprise software systems.
• Extensive use of Java hands-on on most recent Job role (such as SW Developer or SW Engineer) or in the last 5 years.
• Effective Proficiency usage and Development with JavaEE, Spring, and Springboot relative to Microservices.
• Usage of JavaEE supported technology stacks in platforms, such as EKS, Docker, Kubernetes, or AWS, or WebLogic.
• Demonstrates capability for Operational Support and Analysis of Delivered Applications to resolve real-time issues.
• Demonstrates capability to modify and share code seamlessly via tools such as Maven and Artifactory while communicating its changes effectively to group members for rapid application rollouts.
• Ability to diagnose problems and support production systems.
• Experience working with Applications on Cloud utilizing serverless hosted services like AWS S3, DynanoDB, lambda etc.
• Java Micro Service Architecture frameworks such as Spring Boot.
• Experience with container platforms like Docker and Kubernetes.
• SQL DBs (preferably Oracle) and strong SQL/JDBC skills is required for this position.
• Experience with NoSQL DBs like MongoDB, Document DB, Cassandra etc.
• Messaging and Streaming Systems (Kafka, SQS ans Kinesis.)
• XML/JSON.
• Unix/Linux.
• Experince with JPA/Hibernate.
• Experience with building RESTful webservices and experience with query language based APIs like GraphQL.
• Jenkins, Maven, Gitlab and Jira for CI/CD.
• Demonstrated expertise in software engineering practices (e.g., reading/generating software specs, design patterns, continuous integration.)
• Demonstrated ability to incorporate rigorous Unit testing as part of development activities is essential.

Desired Skills and Experience

• First-hand experience working with large project teams (working with the Federal Government a strong plus.)
• Proficient in applying core Java programming skills and using popular 3rd-party libraries to interpret data mappings and organize information for processing large-scale datasets across various representation formats such as relational databases,  NoSQL Databases, XML, JSON, and raw flat files.
• Used Java for enterprise applications development involving real time operations.
• Proven Java custom framework development for supporting data processing, especially with extremely high-volume Transactional usage.
• Usage of real time analysis tools such as Dynatrace to diagnose issues and maintain situational awareness of issues.
• Usage of CI/CD tools such as Harness.
• Demonstrated ability to think critically and creatively to develop innovative solutions to software problems.
• Ability to develop and maintain components with stringent performance requirements.
• Agile development experience a plus.
• Master’s degree in Computer Science or related field is a plus.

Customer Requirements

• Clearance – Ability to obtain and hold a public trust position and favorable suitability based on a CBP Background Investigation.
• Citizenship – Must be a US Citizen.
• Location – Required to be on-site in Ashburn, VA 5 days per week for the first year of employment. All candidates must be within the GWA/commutable area.