Senior Software Developer

Amentum is seeking a Senior Software Developer to join our team in West Palm Beach, FL to support the Atlantic Undersea Test and Evaluation Center (AUTEC) mission. The Senior Software Developer will be responsible for project oversight as well as hands-on development of in-house built web-based applications and supporting primary business applications on the AUTEC project. Must be able to obtain and maintain a Secret U.S. Government Clearance. Note: U.S. Citizenship is required to obtain a Secret Clearance.

Duties and Responsibilities:

• Work through the entire software development lifecycle including requirements gathering, design, integration, user training, and application maintenance.
• Analyze and understand customer requirements and software design objectives.
• Develop functional specifications.
• Implement secure coding practices and maintain software code in compliance with DoD IA mandates.
• Architect, design, and implement .NET web-based solutions.
• Upgrade existing applications from .Net 4.8 to .Net CORE.
• Follow established configuration management processes to maintain source code control.
• Perform code reviews.
• Perform unit testing.
• Participate in various other types of testing, including end user testing support.
• Provide technical guidance and oversight to other members of the development team.
• Train users as necessary.
• Troubleshoot production applications.
• Willingness to mentor and share knowledge.
• Occasional travel to Andros Island, Bahamas will be necessary.

Minimum Requirements:

• Bachelor's degree in an associated discipline or equivalent.
• 7 years related experience working in software development focusing mainly on the Microsoft.NET environment.
• 3 years of experience with ASP.Net 4.8, ASP.Net Core, and C#.
• Experience with javascript.
• Experience with WebForms and MVC and modern frameworks (Razor, Blazor).
• Experience with relational databases.
• Experience with source control systems (source safe, Git).
• Working knowledge of Agile development methodologies.
• CompTIA Security+ CE or certification or DoD 8570 equivalent.
• Proven leadership and project management skills.
• Ability to manage projects involving coordination with multiple personnel.
• Strong communication and problem-solving skills.
• Experience learning systems and business models in a fast-paced environment.
• Is self-managed, takes initiative, and can manage customer expectations for support.
• Excellent oral and written communication skills.
• Ability to communicate at all levels to include management, developers, testers, and customers/users.
• Occasional travel (about 10%) to Andros Island, Bahamas will be necessary.
• Must be able to reside in remote work location with limited medical facilities.
• Valid passport will be required.
• This position requires the individual to be eligible to obtain and maintain a Secret U.S. Government Clearance. Note: U.S. Citizenship is required to obtain a Secret Clearance.

Preferred Qualifications:

• Experience migrating .Net 4.8 to .Net Core is considered a plus.
• Strong experience with SQL Server is preferred.
• Experience with SQL Reporting Services is considered a plus.
• Experience with Java is considered a plus.
• Experience with Power BI is considered a plus.
• Experience with Github/Gitlab is considered a plus.
• Experience with VS Code/ is considered a plus.

Compensation Details:
$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:
02/19/2026 - 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 .