Software Engineer II

Amentum • Jefferson City, MO • 18h ago

Amentum is a global leader in advanced engineering and innovative technology solutions, trusted by the United States and its allies to address their most significant and complex challenges in science, security and sustainability. Our people apply undaunted curiosity, relentless ambition and boundless imagination to challenge convention and drive progress. Our commitments are underpinned by the belief that safety, collaboration and well-being are integral to success. Headquartered in Chantilly, Virginia, we have approximately 50,000 employees in more than 70 countries across all 7 continents.

The Software Engineer II will perform full stack development with C# program, MVC, Linq, and rest API development in NET Core platform. This position is remote telework within the US and US Citizenship is required.

Essential Responsibilities:

Under general supervision, design, develop, troubleshoot, and analyze software programs for computer-based systems

Ensure automated data feeds and system interfaces are working as intended

Participate in software requirements review, preliminary and critical design reviews, integration readiness review, and software acceptance reviews

Design, write, test, deploy and support software code, as assigned

Perform software upgrades in accordance with software quality procedures

Frequent inter-organizational and outside customer contacts on technical matters

Support Continuous Improvement efforts intended to improve the quality of existing software

Design and implement new or existing standard software application programs and reports according to project software standards and conventions

Perform other duties as assigned

Knowledge, Skills and Abilities:

Knowledge of relational database SQL language

Strong knowledge of Model-View-Controller (MVC), Linq, and rest API development

Ability to build robust, maintainable web applications and services

Excellent communications and analytical skills required

Strong Planning/organizing skills

Ability to prioritize and adapt to dynamic changes in the environment

Must be able to work under deadlines

Position may require travel

Minimum Education and Experience Required:

Bachelor's degree in a related technical discipline (e.g., BSEE, BSCS) or equivalent in Computer Science or related field

Three years of C# program experience with .NET technology

Experience with MVC, Linq, and rest API development

ReactJS programming experience preferred

Position may require the ability to pass and maintain a Security Clearance

US Citizenship is required.

Compensation Details:

$80k - $100k

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:

05/28/2026 - 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 (https://postings.govdocs.com/#/vxSkbztPuAwwxfs) .

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