Software Developer - Senior

Amentum; Fort Meade (MD); On-site; USD 140,000 - 147,000; Full time

Benefits offered by this job

Health, dental, and vision insurance

Paid time off and holidays

401(k) matching

Educational reimbursement

Employee stock purchase plan

Job summary

Amentum is seeking a Senior .NET Core Developer to contribute to the development of SENTINEL, a vital web-based application for counterintelligence tracking. This role demands a strong background in .NET technologies, C#, and exceptional problem-solving skills.

Enjoy a supportive work environment where collaboration is key. The position offers competitive compensation of $140,000 - $147,000, comprehensive benefits, and a chance to work on cutting-edge technologies in the Army’s modernization efforts.

Qualifications

• 10+ years of professional software development experience with .NET technologies.
• Deep understanding of .NET Core development and entity framework.
• Exceptional analytical and problem-solving skills.

Responsibilities

• Develop new software solutions utilizing C#.
• Maintain and enhance the SENTINEL application.
• Utilize Azure DevOps and Git for version control.

Skills

C#

JavaScript

HTML

CSS

SQL

Entity Framework Core

Azure DevOps

Education

Master’s degree in a relevant field

Bachelor’s degree

High school diploma

Tools

Visual Studio

SQL Server Management Studio

Git

Power BI

Job description

Overview

We are seeking Software Developers and Data Analysts with at least two years of experience in website coding, basic graphics techniques, SQL, HTML, and XML.

Senior .NET Core Developer

The Senior .NET Core Developer will be a key contributor to the development and maintenance of SENTINEL, a web-based application used to track counterintelligence related entities and their relationships. This role requires an exceptional developer with deep expertise in .NET Core, C#, and related technologies.

This work supports on-going Army modernization efforts to bring cutting edge technologies to CI and HUMINT operations. Developers on this program work closely with analysts and geospatial engineers to develop application support to dynamic operations through cloud based databasing and collaboration.

Work Schedule

M-F 8 hours with the ability to flex schedules, core hours on contract are 9am – 3pm

Essential Responsibilities

• Software Development
  • Develop new, cutting-edge software solutions for SENTINEL utilizing strong C# programming skills.
  • Maintain and enhance existing functionality within the SENTINEL application.
  • Contribute to the design and architecture of new features and components.
• .NET Core Application Development
  • Develop enterprise-level web applications utilizing .NET Core, Razor Pages, Dependency Injection, Web APIs, and HTTP request/response handling.
• Data Management
  • Utilize Entity Framework (EF) Core, Code First, Migrations, and LINQ syntax to manage data interactions with SQL Server, including data insertion, querying, updating, and deletion.
• Development Environment & Tools
  • Daily use of Visual Studio and SQL Server Management Studio for bug fixing and new functionality development.
  • Daily use of Azure DevOps and Git for source code management, version control, and collaboration.
• Database Administration & Optimization
  • Utilize a strong understanding of SQL Server and relational database principles to create, modify, and delete database objects.
  • Troubleshoot and address database performance issues.
• Front-End Development
  • Possess exceptional JavaScript development skills.
  • Implement AJAX calls, form validation, DOM manipulation, and interactivity using JavaScript.
  • Style web applications utilizing CSS and UI layout frameworks such as Bootstrap 5 to create visually appealing and consistent user interfaces.
• Collaboration & Mentorship
  • Collaborate with other developers, analysts, and stakeholders throughout the software development lifecycle.
  • Potentially mentor junior developers and share knowledge.

Work Environment, Physical Demands, and Mental Demands

Office environment with little physical demand, but creative development demanding mental focus.

Minimum Requirements

• Master’s degree in a relevant field and 12 years’ relevant experience; with a portion of the experience within the last 2 years, or
• Bachelor’s degree and 14 years of relevant experience, orAssociate degree and 16 years of relevant, or
• High school diploma and 20 years of relevant experience.
• Security Plus certified
• Qualified at Information Assurance Technical Workforce Requirement Level II as defined in DoD 8570.01-M, Table C3.T1.
• Skilled in data visualization and use of graphical applications, including Microsoft Office (Power BI) and Tableau; major data science languages, such as R and Python; managing and merging of disparate data sources, preferably through R, Python, or SQL; statistical analysis; and data mining algorithms.
• 10+ years of professional software development experience with a strong focus on .NET technologies.
• .NET Core Expertise: Deep understanding and practical experience with .NET Core development.
• C# Proficiency: Exceptional C# programming skills with a thorough understanding of object-oriented programming principles.
• EF Core & SQL Server: Extensive experience with Entity Framework Core, Code First, Migrations, and SQL Server.
• JavaScript & Front-End Technologies: Solid understanding of JavaScript, HTML, CSS, and modern front-end frameworks (e.g., Bootstrap).
• DevOps Proficiency: Proficient with Azure DevOps and Git for source control, CI/CD, and collaboration.
• Problem-Solving: Exceptional analytical and problem-solving skills.

Security Clearance Required

Current Top Secret//SCI required

Minimum Education

HS Diploma with years of experience supplementing education/bachelor’s degree in relevant field or 14 years of relevant experience (flexible)

Minimum Years of Experience

14 years, flexible and depending on degree completion

Required Certifications

• Security Plus certified

Preferred Qualifications

• C# programming skills
• Understanding of ASP.NET Core 6.0 and related concepts to include Razor Pages, Dependency Injection and Middleware
• Understanding of Entity Framework (EF) Core 6.0
• Experience using both Visual Studio and SQL Server Management Studio
• Experience using Team Foundation Server (TFS), Azure DevOps and/or Git as a source control repository and understand branching and merging concepts
• Understanding of SQL Server, understanding of relational database principles in general and the ability to create, modify and delete database objects
• Working knowledge of JavaScript development (general JavaScript knowledge, JQuery, etc)
• Knowledge of Cascading Style Sheets (CSS) and UI layout frameworks (Bootstrap, Flexbox, etc)
• Understanding of using LINQ and Entity Core (EF) to insert, query and update data in SQL Server
• Ability to troubleshoot SQL Server performance issues to identify bottlenecks, poor performing queries, etc
• Experience reverse engineering legacy source code to implement priority bug fixes and enhancement requests
• Working knowledge of IIS and Web application deployments

Compensation Details

$140,000 - $147,000

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

• 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.

Equal Opportunity Employer

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, 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.