Secure our Nation, Ignite your Future

　　Become an integral part of a diverse team while working at an Industry Leading Organization, where our employees come first. At ManTech International Corporation, you’ll help protect our national

　　security while working on innovative projects that offer opportunities for advancement.

　　Currently, ManTech is seeking a motivated, career and customer-oriented Senior Software Developer (GAMS) to join our team in Arlington, VA.

　　Responsibilities include but are not limited to:

　　Responsible for coding, managing, and updating a large, complex mixed integer computer model/program written in GAMS that makes extensive use of input files with records that number in the millions as well as formulating user-friendly output files. Works as a member of a software development team whose primary mission is to meet the client’s modeling needs on a daily basis. Must have solid command of linear programming and mathematical modeling skills and a thorough understanding of GAMS coding. Prepares written technical documents describing all aspects of the model to include data inputs, mathematical modeling formulation, and output reporting.

　　Specific duties include:

　　Maintain and enhance existing C# applications using WPF (Windows Presentation Foundation), Extensible Application Markup Language (XAML), Model-View-ViewModel (MVVM), .NET Framework, and .NET Core technologies.

　　Design and develop MS SQL Server stored procedures and scripts.

　　Design and develop visually rich and responsive GUI framework elements including custom WPF components.

　　Assist with management of backlog for GUI-related issues.

　　Analyze reported issues and assist with debugging and developing fixes.

　　Assist with preparation of system documentation (e.g., design documents, interface design documents, and user manuals)

　　Follow established software engineering processes and procedures.

　　Must be able to work independently and show initiative, but also communicate status and problems to other team members and supervisors.

　　Communicate well with other team members and balance shifting priorities to meet deadlines.

　　Must possess ability to gain and maintain a Secret security clearance.

　　Minimum Qualifications:

　　BS in Mathematics/Mathematical Modeling/Statistics/Computer Science/Industrial Engineering or equivalent and 5+ years of related experience

　　MS in Operations Research (preferred)/Mathematics/Mathematical Modeling/Industrial Engineering, or equivalent and 3+ years of related experience

　　Preferred experience:

　　Linear Programming

　　Fundamental understanding of mixed integer linear programming and mathematical modeling

　　required.

　　Math

　　Linear Algebra

　　Linear Programming

　　Optimization

　　Computer

　　Programming Languages

　　GAMS (required), Visual Basic, C#, SQL Server (desired)

　　Concepts

　　Data Structures, Loops/Branching, Functions, Properties/Methods/Actions, Configuration/Version Control

　　Operating Systems

　　Windows - File/Folder management, File associations

　　Linux - File/Folder mgt via console, Executing/controlling programs via console.

　　Communication Skills

　　Writing – Ability to communicate technical terms to technical/nontechnical audiences.

　　Speaking - Present past/present/future work to user group, lead group discussions on proposed model modifications, develop new model requirements with customer.

　　Other

　　Experienced in mathematical modeling and linear programming, technical analysis and reporting, computer program design/development/testing.

　　Knowledge of Basic Airpower Doctrine, Aircraft, Weapons, Weaponeering Concepts (helpful but not required)

　　Security Clearance Requirements:

　　Ability to gain and maintain a US Government Top Secret clearance required. In addition to the security clearance, this position may require an additional background screening for base access.

　　U.S. Citizenship required.

　　Physical Requirements:

　　Must be able to be in a stationary position more than 50% of the time.

　　Must be able to communicate converse and exchange information with peers and senior personnel.

　　Constantly operate a computer and other office productivity machinery, such as calculator, computer printer and copy machine.

　　For all positions requiring access to technology/software source code that is subject to export control laws, employment with the company is contingent on either verifying U.S.-person status or obtaining any necessary license. The applicant will be required to answer certain questions for export control purposes, and that information will be reviewed by compliance personnel to ensure compliance with federal law. ManTech may choose not to apply for a license for such individuals whose access to export-controlled technology or software source code may require authorization and may decline to proceed with an applicant on that basis alone.

　　ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital status, physical or mental disability, status as a Disabled Veteran, Recently Separated Veteran, Active Duty Wartime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law.

　　If you require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please contact ManTech's Corporate EEO Department at (703) 218-6000. ManTech is an affirmative action/equal opportunity employer - minorities, females, disabled and protected veterans are urged to apply. ManTech's utilization of any external recruitment or job placement agency is predicated upon its full compliance with our equal opportunity/affirmative action policies. ManTech does not accept resumes from unsolicited recruiting firms. We pay no fees for unsolicited services.

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