Mobile Developer

System One; Merrifield (VA); Hybrid; USD 95,000 - 140,000; Full time

Job summary

System One is seeking a Mobile Developer to design, build, and maintain mobile banking features across iOS and Android. You will work in cross-functional Agile teams to deliver secure, reliable experiences for millions of members.

The role emphasizes technical execution, platform advocacy, and collaboration, with a multi-level career track and ongoing learning opportunities in mobile platforms.

Qualifications

• Bachelor’s degree in Computer Science or related field.
• Progressive experience in mobile application development.
• Proficiency in iOS: Swift, Objective-C, Xcode.
• Proficiency in Android: Kotlin, Java, Android Studio.
• Experience integrating RESTful APIs and libraries.
• Familiarity with SAFe Agile methodologies.
• Strong problem-solving and communication skills.

Responsibilities

• Design, develop, and maintain mobile banking features for iOS and Android.
• Resolve production issues and improve platform performance.
• Collaborate with cross-functional Agile teams and stakeholders.
• Participate in Agile ceremonies and code reviews.
• Stay current with mobile OS updates and emerging technologies.

Skills

Mobile development

Team collaboration

Analytical thinking

Education

Bachelor's degree in Computer Science

Tools

Swift

Objective-C

Xcode

Kotlin

Java

Android Studio

RESTful APIs

Job description

Job Title: Mobile Developer

Location: Hybrid reporting to Vienna/Winchester, VA, Pensacola, FL or San Diego, CA

Pay Rate: Open to Both C2C and W2 options

Position Type: Multiyear Contract

Description

To support the development, maintenance, and enhancement of the organization's mobile banking applications across iOS and Android platforms. Mobile Developers are embedded within cross-functional Agile teams and play a critical role in delivering secure, reliable, and user-friendly digital experiences to millions of members. This role involves technical execution, platform advocacy, and collaboration across disciplines to ensure high-quality mobile solutions aligned with business goals and member needs.

Responsibilities

• Design, develop, and maintain mobile banking features for iOS and/or Android platforms
• Resolve production issues and contribute to platform stability and performance improvements
• Collaborate with cross-functional Agile teams including front-end, back-end, and product stakeholders
• Participate in Agile ceremonies and contribute to sprint planning and backlog refinement
• Ensure adherence to platform-specific development standards and best practices
• Write and maintain unit and UI tests; participate in peer code reviews
• Stay current with mobile OS updates, development trends, and emerging technologies
• Advocate for platform excellence and contribute to reusable component libraries
• Mentor junior developers and contribute to team knowledge sharing
• Support enterprise-wide mobile initiatives and influence platform strategy (senior levels)

Qualifications

Bachelor’s degree in Computer Science or related field

Progressive experience in mobile application development (level-dependent)

Proficiency in:

• iOS: Swift, Objective‑C, Xcode
• Android: Kotlin, Java, Android Studio

Experience integrating RESTful APIs and third-party libraries

Familiarity with Agile methodologies (SAFe preferred)

Strong analytical, debugging, and problem‑solving skills

Effective communication and collaboration abilities

Desired: Experience with CI/CD pipelines, mobile accessibility standards, and performance optimization

Career Levels

Associate Mobile Developer (Level 1)

Focus: Learning and foundational contribution

Technical Responsibilities:

• Build small features and bug fixes under guidance
• Participate in Agile ceremonies and code reviews
• Learn platform tools and development practices
• Pair with senior developers for mentorship

Soft Skills:

• Curiosity
• Adaptability
• Clear communication
• Team collaboration

Mobile Developer (Level 2)

Focus: Independent contribution and platform ownership

Technical Responsibilities:

• Own moderately complex features and bug fixes
• Represent mobile platform within Agile team
• Collaborate with designers, analysts, and product owners
• Begin mentoring junior developers

Soft Skills:

• Accountability
• Cross‑functional communication
• Proactive problem‑solving

Senior Mobile Developer (Level 3)

Focus: Technical leadership and cross‑team collaboration

Technical Responsibilities:

• Lead development of complex features and platform initiatives
• Influence architecture and reusable components
• Mentor junior developers and drive platform standards
• Represent mobile in cross‑team efforts

Soft Skills:

• Leadership
• Strategic thinking
• Coaching
• Platform advocacy

Principal Mobile Developer (Level 4)

Focus: Vision‑setting and enterprise‑level influence

Technical Responsibilities:

• Define mobile platform strategy across release trains
• Lead enterprise‑wide mobile initiatives and innovation
• Introduce new tools, frameworks, and practices
• Advocate for mobile excellence across the organization

Soft Skills:

• Visionary leadership
• Change management
• Thought leadership
• Enterprise collaboration