Job Title: iOS Developer - Mid-Senior Level Location: Vienna or Winchester, VA or Pensacola, FL Hybrid: onsite 2 days a week or 8 days a month Pay Rate: Open to Both 1099 and W2 options Position Type: Multiyear Contract We are looking for iOS Mobile Developers with 8-12 years of iOS development experience. Description To support the development, maintenance, and enhancement of client’s mobile banking applications across iOS platform. 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 • 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 • 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 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 System One, and its subsidiaries including Joulé, ALTA IT Services, and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law. #M2 #LI- #DI-CB2 Ref: #850-Rockville (ALTA IT) System One, and its subsidiaries including Joulé, ALTA IT Services, CM Access, TPGS, and MOUNTAIN, LTD., are leaders in delivering workforce solutions and integrated services across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible full-time employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.