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ManTech seeks a motivated, career-focused, and customer-oriented **Senior Mobile Developer** to join an **on-site** team in either: Falls Church, VA, San Antonio, TX, Aurora, CO, or Tacoma, WA.

Responsibilities include but are not limited to:

+ Design, develop, and maintain mobile applications across platforms, with a focus on Progressive Web Apps (PWSs) and select native iOS/Android apps.

+ Collaborate with UX designers, back-end developers, and share services engineers to deliver secure, user-friendly, and high-performing mobile solutions.

+ Maintain and refactor existing mobile codebases, including legacy hybrid apps, ensuring alignment with DHA security and platform standards.

+ Develop and consume RESTful APIs, microservices, and federated authentication mechanisms (e.g., OAuth2, SAML, CAC integration, etc).

+ Support app deployment pipelines for external app store or internal mobile device management (MDM) systems.

+ Lead code reviews and establish standards for knowledge sharing across all mobile development staff.

Minimum Qualifications:

+ 4+ years of progressive experience as a mobile software developer with at least 1+ years as a senior developer or technical lead spanning multiple projects/teams simultaneously.

+ Bachelor’s degree in Computer Science, Software Engineering, Information Technology, or related discipline. Additional relevant military or professional experience (typically 4 years) may be substituted in lieu of a degree.

+ Strong experience building Progressive Web Apps (PWAs), including deep knowledge of JavaScript/TypeScript, React Native, Flutter, or similar.

+ Expertise with native iOS/Android (Swift/Kotlin/Java) environments, including advising customers on trade-offs between native vs. PWA approaches for specific use cases.

+ Solid understanding of mobile UI/UX design principles, accessibility standards, and responsive layouts.

+ Experience integrating apps with REST APIs, federated identity providers, and secure authentication flows.

+ Ability to troubleshoot and debug across device types and operating systems, including real-world MDM or Government Furnished Equipment (GFE) constraints.

+ Prior experience working with user bases exceeding 10,000, preferably in contexts involving operational healthcare, clinical training, or readiness systems.

Preferred Qualifications:

+ Familiarity with DoD or federal cybersecurity standards (RMF, STIG, IL4/IL5, HIPAA).

+ Experience supporting Defense Health Agency (DHA), MHS, Veterans Administration (VA), or other federal health agencies.

+ Familiarity with Azure App Services, Microsoft Identity Platform, or DHA-specific SDKs.

+ Experienced implementing or leveraging containerized mobile backends, microservices, or mobile gateways in Kubernetes or Azure Kubernetes Service (AKS).

+ Experience with CI/CD pipelines for mobile apps, such as Fastlane, TestFlight, or Firebase.

+ Certifications such as Azure Developer Associate, Google Associate Android Developer, iOS Developer (via Swift certifications), or similar.

Clearance Requirements:

+ Must be a U.S. Citizen with the ability to obtain and maintain a Public Trust clearance.

Physical Requirements:

+ Office work, typically sedentary with some movement around the office.

+ Ability to travel (car or air) and present at conferences or meetings.

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. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

If you are a qualified individual with a disability and require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please email us at [email protected] and provide your name and contact information.