Senior Back-End Developer

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 Level Back End Developer to join our team.  This is a remote opportunity.

What you will get to do: 

• Directly engage in the full software development life cycle (SDLC), from requirements gathering and analysis to design, development, and implementation, using Agile methodologies. 

• Join a high-performing team to design, develop, and implement enterprise solutions using the latest tools and technologies. 

• Be a key collaborator, where your insights and recommendations drive the modernization and enhancement of our client applications, impacting both performance and user experience. 

• Work hands-on with Azure cloud services, staying at the forefront of cloud-based solutions and digital innovation. 

• Develop critical applications used by over 100,000 users, making a meaningful impact on a large and diverse audience. 

• Implement cybersecurity best practices and meet rigorous Department of Defense standards to ensure the highest security and compliance levels in our solutions. 

Responsibilities include, but are not limited to:

• Collaborate with stakeholders to translate business requirements into technical solutions. 

• Engage primarily in back-end development, with the ability to contribute to front-end development as needed, playing a key role in full-stack application development. 

• Develop and maintain secure REST API endpoints using ASP.NET, incorporating robust user permissions and data validation. 

• Assist as needed in creating responsive, front-end user interfaces for Single Page Application (SPA) web apps using modern JavaScript frameworks. 

• Focus on modernizing and rewriting legacy applications, aiming to migrate them and their resources to the cloud environment (cARMY). 

• Write unit tests to ensure functionality and reliability of both back-end code.��

• Create comprehensive solution documentation, including technical and user guides, system diagrams, data models, and integration strategies. 

• Develop code in accordance with U.S. Government (USG) Information Assurance (IA) and Security (INFOSEC) standards, policies, and best practices. 

• Uphold high code quality standards and thoughtful application design for consistency across projects. 

• Participate in regular Scrum events as part of an agile team. 

• Collaborate across US time zones via Email, MS Teams, Slack, Zoom, Google Drive, Git repositories, Azure DevOps, and project documents. 

• Bring a positive, solution-focused attitude and a willingness to present innovative ideas. 

• Execute additional tasks as required. 

Basic Qualifications:

• BS Degree or equivalent experience. 

• Minimum of 5 years of hands-on software engineering experience. 

• CompTIA Security+ certification (or willingness to acquire within the first month of employment). 

• Proficiency in developing REST API endpoints using ASP.NET 

• Experience working with containers and deploying resources to the cloud. 

• Strong understanding of data structures and experience with relational databases like Oracle and SQL Server located both on-prem and in the cloud. 

• Understanding of data encryption and best practices around security. 

• Hands on experience with implementing different types of user authentication, user permissions, and role-based access control (RBAC). 

• Experience in writing unit tests for back-end using tools like NUnit, Moq, Fluent Assertions, etc. 

• Proficient in Agile Software Development methodologies. 

• Experience with git version control, cloud service providers, and understanding of DevSecOps and CI/CD pipelines. 

• Strong history of working with software development team to assess, develop, test, and maintain systems and applications. 

• Some experience with JavaScript frameworks (React, Vue.JS, Angular, etc.)  

• Basic understanding of TypeScript, including its type system (interfaces, types, generics). 

• Basic understanding of web development including responsive design principles or experience with UI frameworks (Bootstrap, Material Design, Tailwind, etc.). 

• Strong team collaboration skills, excellent