Sr. Mobile Developer (Cross-Platform)

Catapult Federal Services; Westphalia (MD); On-site; USD 170,000 - 216,000; Full time

Benefits offered by this job

Health insurance

401(k) retirement plan with company  匹

Paid time off (PTO) and holidays

Parental Leave

Job summary

Catapult Federal Services in Maryland is seeking a Sr. Mobile Developer (Cross-Platform) to design, build, and sustain secure iOS and Android apps for a federal government customer.

You will contribute in an Agile, security-first environment with close collaboration with security and backend teams. The role requires an active Secret clearance with upgrade eligibility, DoD 8140 certifications, and 5+ years of cross-platform mobile experience.

Qualifications

• Active Secret security clearance required or upgrade eligible.
• Bachelor’s degree preferred; relevant experience may substitute.
• DoD 8140-compliant certification (e.g., Security+ or higher).
• 5+ years of cross-platform mobile development for iOS and Android.
• Experience securing and integrating mobile apps with enterprise APIs.
• MDM integrations and secure deployments experience.
• Ability to ramp quickly in a mission-critical environment.

Responsibilities

• Design, develop, test, and maintain secure mobile apps using cross‑platform and native tech.
• Apply secure coding practices per RMF, STIGs, and secure SDLC standards.
• Integrate apps with backend APIs and enterprise services.
• Support MDM integrations (Samsung Knox, VMware AirWatch).
• Participate in Agile ceremonies and sprint execution.
• Communicate progress, risks, and decisions clearly to teammates.
• Troubleshoot and resolve issues rapidly in high-security environments.
• Contribute to continuous improvement and technical excellence.

Skills

Cross-platform mobile development

iOS development

Android development

Secure coding practices

RMF/STIGs compliance

Secure SDLC

API integration

MDM integration

Agile

Security clearance

Education

Bachelor's degree in a technical field

Tools

Samsung Knox

Knox REST APIs

REST APIs

Job description

*NOT OPEN TO C2C OR W2 REFERRALS AT THIS TIME*

Clearance: Active Secret security clearance with eligibility to upgrade to TS/SCI

*Active Top Secret security clearance preferred but will take candidates who have a Secret and get them processed

As a Sr. Mobile Developer (Cross-Platform), you’ll design, build, and sustain secure iOS and Android applications with the goal of delivering mission-critical mobile capabilities across the federal government. Our engineering team is responsible for building and operating high-security mobile solutions for a highly visible government customer, and you’ll play a key role in delivering reliable, secure, and scalable applications by contributing immediately within an Agile delivery model, collaborating closely with security and backend teams, and driving disciplined execution in a classified environment.

What you’ll do:

• Use cross-platform mobile frameworks and native iOS/Android technologies to design, develop, test, and maintain secure mobile applications.
• Apply secure coding practices aligned with RMF, STIGs, and secure SDLC standards.
• Integrate mobile applications with backend APIs, enterprise services, and identity and access management solutions..
• Support Mobile Device Management (MDM) integrations, including Samsung Knox and VMware AirWatch.
• Participate actively in Agile ceremonies and sprint execution to deliver mission-critical capabilities.
• Communicate progress, risks, and technical decisions clearly to teammates and leadership.
• Troubleshoot and resolve issues rapidly in high-security environments.
• Contribute to continuous improvement and technical excellence across the team.

What you’ll need to succeed:

• Active Secret security clearance with eligibility to upgrade to TS/SCI.
• Bachelor’s degree in a technical field is preferred; relevant experience may be substituted.
• Certification meeting DoD 8140 (e.g., Security+, or higher).
• 5+ years of professional development of cross-platform mobile applications for both iOS and Android.
• Experience maintaining, integrating, optimizing, and debugging existing mobile applications in operational environments.
• Experience implementing secure mobile application architectures, including authentication, authorization, and data protection mechanisms.
• Experience integrating mobile applications with enterprise services and APIs, including REST-based interfaces.
• Experience supporting mobile device management and secure enterprise mobile deployments, including Samsung Knox SDK and Knox REST APIs.
• Ability to contribute immediately with minimal ramp-up in a mission-critical operational environment.

This position is designated as essential personnel supporting continuity of operations and may require work during government shutdowns, emergencies, or other critical situations.

SALARY RANGE: $170,000 - $216,000

The salary range for this position is determined based on qualifications, skills, and relevant experience. The final salary offered will be determined based on several factors including:

• The candidate's professional background and relevant work experience
• The specific responsibilities of the role and organizational needs
• Internal equity and alignment with current team compensation

This role is also eligible for additional compensation, subject to the terms and policies, which may include:

• Performance-based bonuses
• Company-paid training and/or certifications

Benefits: All full-time employees are eligible to participate in our benefits programs:

• Health, dental, and vision insurance
• 401(k) retirement plan with company match
• Paid time off (PTO) and holidays
• Parental Leave and dependent care
• Employee assistance and wellness programs