**MANTECH** seeks a motivated, career and customer-oriented **Back-End Developer** to join our team in **Springfield, VA.**

The Back-End Developer will lead the design, implementation, and maintenance of server-side logic, APIs, and system integration for technical applications. You will help ensure back-end components meet technical requirements and security standards while supporting overall mission objectives.

**Responsibilities include but are not limited to:**

+ Designing, developing, and maintaining server-side applications and APIs.
+ Building and managing databases while ensuring data integrity and security.
+ Integrating with authentication systems and security frameworks to meet all requirements.
+ Writing clean, efficient, and well-documented code for systems and interfaces.
+ Implementing security controls and maintaining a robust library of technical documentation.
+ Collaborating with developers and stakeholders to ensure seam...