Hourly Freelance Java Developer Jobs in Ashburn, VA

Purpose and Impact:
Amentum is searching for a Top-Secret cleared Software Developer to join our team in Washington, DC. You will be working in an organization that's mission is to accelerate operations through data and new analytical insights. The entire section leverages agile and works to provide enhanced reporting and global searching capabilities to facilitate task management, cross-utilization, and address national intelligence priorities while protecting confidential data and sources.
The Software Developer is a part of a team that will lead large-scale data analysis projects to design and deliver on premises and cloud-based applications. The Software Developer is responsible for Developing codes, testing, and debugging new software or enhancements to existing software. The Software Developer works with technical staff to understand problems with software and resolve them. Resolves customer complaints about software and responds to suggestions for improvements and enhancements. Possesses and applies expertise on multiple complex work assignments.
Work Schedule: Typically, Monday through Friday 8-hour days onsite. Flexibility within 2-week pay period to reach 80 hours.
Essential Responsibilities:
Develops codes, tests, and debugs new software or enhancements to existing software. Has good understanding of business applications as well as user, performance, quality, interface, and security requirements. Works with technical staff to understand problems with software and resolve them. Resolves customer complaints about software and responds to suggestions for improvements and enhancements. May assist in development of software user manuals. Responsible for desktop design, testing, security lockdown implementation, integration with standard software packages, integration with automated patching and deployment technologies, documentation, and training to include automating application and configuration deployments and updates.
Possesses and applies expertise on multiple complex work assignments. Assignments may be broad in nature, requiring originality and innovation in determining how to accomplish tasks. Operates with appreciable latitude in developing methodology and presenting solutions to problems. Contributes to deliverables and performance metrics where applicable.
Minimum Requirements (Knowledge, Skills, and Abilities):

• Minimum of 1 year of experience collectively with the following:
  
  • Developing, testing, and deploying back-end software in a widely used programming language such as Java, JavaScript, Go, Python, Typescript, and .NET
  • Developing, testing, and deploying Java software using the latest versions of the Java Development Kit
  • Implementing and using backend frameworks such as Java Spring, Nodejs, Go GinAngularJS, React, NextJS, Spring, Nodejs, NestJS, and Gin Spring, Google Web Toolkit, Hibernate, and Struts
  • With software development lifecycle processes to include Agile development
  • Software design patterns and antipatterns
  • With development tools (git, integrated development environment, code quality tools, etc.)

Clearance Required:

• Active Top-Secret clearance with SCI eligibility

Minimum Education:

• Bachelor's degree in Information Systems Engineering, Computer Science, Engineering, Business or other related field.
• In absence of degree, additional years of experience may be substituted for educational requirements

Minimum Years of Experience:

• Minimum of 1 year of experience

Preferred Qualifications:

• Java, JavaScript, Python, SQL
• GitLab, JFROG Artifactory and Xray, Splunk, Hashicorp Vault, Boundary, Consul, Terraform, Nexus, JIRA, Crucible, Jenkins, Ansible and Ansible Tower
• Amazon Web Services, Microsoft Azure Cloud
• Microsoft Windows Server and Linux
• AWS Associate Level or above Certification(s)

Compensation Details:
$100,000 - $115,000
The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.
#javelin
Compensation Details:
US:$100,00 - $115,000
The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.
Benefits Overview:
Our health and welfare benefits are designed to support you and your priorities. Offerings include:

• Health, dental, and vision insurance
• Paid time off and holidays
• Retirement benefits (including 401(k) matching)
• Educational reimbursement
• Parental leave
• Employee stock purchase plan
• Tax-saving options
• Disability and life insurance
• Pet insurance

Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.
Original Posting:
03/18/2026 - Until Filled
Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.
Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.