Senior iOS Engineer, New York
At a glance
Senior Mobile Engineering role at ION Group. New York · full-time · $150,000–$200,000 base.
techroles summary, based on the employer's posting.
What you'll do
- Build and maintain iOS apps in Swift, using SwiftUI or UIKit while keeping them responsive and performant
- Shape and ship features with product managers, designers and backend developers
- Write maintainable code using established patterns, then test it at unit and integration levels
- Investigate bugs and performance issues, and keep your mobile technology knowledge current
What you bring
- At least eight years designing and building complex commercial software systems
- You’re proficient in Swift and have built native iOS apps with tools such as SwiftUI, UIKit or SwiftData
- You have financial services experience and can integrate REST APIs and third-party libraries
- You understand mobile UI/UX practices and can communicate with technical and non-technical stakeholders
Who this fits
This senior role suits an experienced iOS engineer who can work directly with clients and collaborate across product, design and engineering. It is an on-site position in New York City’s WTC area.
From the employer
LAB49 is currently looking for a Senior iOS Engineer playing a critical role on key projects for Lab49 clients. Working in a collaborative and innovative project team, with direct client-facing interactions, you will have an opportunity to apply your skills and expertise to design innovative applications that solve complex problems and enhance performance and productivity at our marquis clients.
Lab49 is an NYC-based specialist strategy, design, and technology consulting company dedicated to the financial services industry. We were founded in 2002 to fill a need in the Financial Technology marketplace for high-end execution and reliable delivery of technology projects.
Our consultants are experts in strategy, user experience, architecture, engineering, and delivery management. We combine knowledge of the latest trends in technology with deep domain expertise to deliver innovative solutions with accelerated time-to-market. We have office hubs in Midtown Manhattan, London, Budapest, New Delhi and Sydney.
Responsibilities:
- Develop and maintain robust iOS applications using Swift and SwiftUI/ UIKit, ensuring optimal performance and responsiveness.
- Collaborate with product managers, UI/UX designers, and backend developers to define, design, and ship new features.
- Write clean, maintainable, and efficient code, adhering to best practices and architectural patterns (e.g., MVVM).
- Perform unit and integration testing to ensure application quality and stability.
- Troubleshoot, debug, and optimize application performance.
- Stay up-to-date with the latest mobile technologies, frameworks, and industry trends.
- The role is on-site in the WTC area of New York City
Required Skills and Experience:
- 8+ years of experience designing and building complex, commercial-grade software systems
- Proficiency in Swift and experience with native iOS development tools such as SwiftUI, UIKit, SwiftData, Swift Concurrency (async/await)
- Experience in financial services
- Familiarity with integrating RESTful APIs and third-party libraries
- Experience with agile development methodologies
- Knowledge of continuous integration and continuous deployment (CI/CD) pipelines for mobile applications
- Understanding of mobile UI/UX principles and best practices to create intuitive and engaging user experiences
- Excellent communication skills with the ability to influence both technical and non-technical stakeholders.
Preferred Qualifications
- Experience in consumer banking including account management and onboarding
- Experience in fraud management/KYC/AML and regulatory reporting
- Experience using on device biometrics for authentication
- A strong portfolio of released applications on the App Store
- Experience with AppConfig community standards and enterprise app distribution
- College degree in Computer Science or related field of study or equivalent experience
- Leverage AI-assisted development tools (e.g., Claude, Claude Code, Copilot) to improve team velocity and code quality, and help the team adopt them responsibly
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Mobile Engineering$150k+
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