Mobile Engineer 4 (iOS) Do you love pioneering at the intersection of native mobile architecture and cutting-edge digital payments? Do you thrive when taking complete ownership of high-impact products in a fast-paced, collaborative, and iterative environment?  At Capital One, you'll join a dynamic group of makers, breakers, and disruptors building the next generation of mobile commerce. We are seeking an iOS Engineer who is passionate about leveraging modern Swift frameworks (SwiftUI/XCode), agentic AI workflows, and digital wallet integrations. In this role, you’ll lead technical intent, mentor growing talent, and shape how 100M+ customers interact with their money every single day. What You’ll Do:  • Partner with software engineers, designers, and product managers to deliver high-performing, quality features for 100M+ customers that are engaging, purposeful and powerful in their simplicity • Provide technical leadership for mobile architecture and design patterns, acting as a multiplier for your team's impact • Mentor other engineers, fostering their growth through thoughtful feedback, code reviews, and sharing of platform-specific best practices, while helping to identify and clear technical obstacles • Grow and provide subject matter expertise in key platform areas (e.g., performance, accessibility, architecture) • Contribute to mobile architecture decisions, API design reviews, and reusable component development • Lead the design and development of client Backend-for-Frontends (BFFs) and Server-Driven UI (SDUI) architectures to deliver scalable and flexible product experiences • Lead the implementation and refinement of well-managed engineering practices, defining best practices for feature flags and staged rollouts to improve product delivery and quality • Champion the adoption of agentic AI tools, mentoring engineers in AI-native development practices to increase team velocity • Apply mastery of the modern mobile ecosystem (including deep platform-specific capabilities and advanced UI patterns) to make complex, high-leverage, hands-on technical contributions • Drive a culture of quality, performance, accessibility, and customer empathy, establishing high standards for coding, testing, and user experience Basic Qualifications:  • Bachelor's Degree or higher in Computer Science or a related quantitative field (Statistics, Economics, Operations Research, Analytics, Mathematics, Engineering) • At least 4 years of professional software engineering experience (internship experience does not apply) • At least 3 years of experience building native mobile applications for Android (Kotlin) or iOS (Swift) Preferred Qualifications: • 4+ years of experience building native mobile applications for Android (Kotlin) or iOS (Swift) • Demonstrated experience with modern native UI frameworks (e.g., SwiftUI, Jetpack Compose) • Demonstrated experience designing and building automated testing suites for mobile (e.g., Swift Testing, XCUI, JUnit, Espresso) • Proven experience with performance tuning and optimization on native mobile platforms • Demonstrated experience designing scalable mobile architectures and reusable component libraries • Experience implementing and maintaining comprehensive automated testing • Demonstrated experience with modular architecture and modern state management patterns • Demonstrated experience designing and developing client Backend-for-Frontends (BFFs) to orchestrate data for mobile clients using technologies like GraphQL and efficient networking protocols (e.g., gRPC/Protobuf) • Demonstrated experience with Server-Driven UI (SDUI) architectures • Demonstrated experience in metrics-driven staged rollout and feature flag strategies • Expertise with agentic AI coding tools and AI-assisted workflow patterns • Familiarity with on-device ML frameworks (e.g., CoreML, TensorFlow Lite) At this time, Capital One will not sponsor a new applicant for employment authorization, or offer any immigration related support for this position (e.g. H1B, F-1 OPT, F-1 STEM OPT, F-1 CPT, J-1, TN, E-3, and O-1, or any other forms of work authorization that require immigration support from an employer). The minimum and maximum full-time annual salaries for this role are listed below, by location. Please note that this salary information is solely for candidates hired to perform work within one of these locations, and refers to the amount Capital One is willing to pay at the time of this posting. Salaries for part-time roles will be prorated based upon the agreed upon number of hours to be regularly worked. McLean, VA: $197,300 - $225,100 for Mobile Engineer 4                     Candidates hired to work in other locations will be subject to the pay range associated with that location, and the actual annualized salary amount offered to any candidate at the time of hire will be reflected solely in the candidate’s offer letter. This role is also eligible to earn performance based incentive compensation, which may include cash bonus(es) and/or long term incentives (LTI). Incentives could be discretionary or non discretionary depending on the plan. Capital One offers a comprehensive, competitive, and inclusive set of health, financial and other benefits that support your total well-being. Learn more at the Capital One Careers website. Eligibility varies based on full or part-time status, exempt or non-exempt status, and management level. This role is expected to accept applications for a minimum of 5 business days. No agencies please. Capital One is an equal opportunity employer (EOE, including disability/vet) committed to non-discrimination in compliance with applicable federal, state, and local laws. Capital One promotes a drug-free workplace. Capital One will consider for employment qualified applicants with a criminal history in a manner consistent with the requirements of applicable laws regarding criminal background inquiries, including, to the extent applicable, Article 23-A of the New York Correction Law; San Francisco, California Police Code Article 49, Sections 4901-4920; New York City’s Fair Chance Act; Philadelphia’s Fair Criminal Records Screening Act; and other applicable federal, state, and local laws and regulations regarding criminal background inquiries. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation, please contact Capital One Recruiting at 1-800-304-9102 or via email at RecruitingAccommodation@capitalone.com. All information you provide will be kept confidential and will be used only to the extent required to provide needed reasonable accommodations. For technical support or questions about Capital One's recruiting process, please send an email to Careers@capitalone.com Capital One does not provide, endorse nor guarantee and is not liable for third-party products, services, educational tools or other information available through this site. Capital One Financial is made up of several different entities. Please note that any position posted in Canada is for Capital One Canada, any position posted in the United Kingdom is for Capital One Europe and any position posted in the Philippines is for Capital One Philippines Service Corp. (COPSSC).