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Senior iOS Engineer, New York

Ion

New York permanent

Posted: February 12, 2026

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Quick Summary

Design and develop innovative iOS applications for key clients, with a focus on performance and productivity.

Job Description

The Senior iOS Developer will play 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.


Responsibilities:
• Develop and maintain robust ios applications using Swift and SwiftUl/UIKit, ensuring optimal performance and responsiveness.
• Build and deploy cross-platform mobile applications for iOS (and Android using the Flutter framework and Dart programming language, leveraging a single codebase.
• Collaborate with product managers, UIVUX 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).
• Develop and maintain robust and scalable iOS applications using Swift and Apple's development ecosystem.
• 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.


Required Skills and Experience:
• Proficiency in Swift and experience with native iOS development tools such as Xcode, SwiftUl, and UIkit.
• Strong command of the Flutter framework and Dart programming language for building cross-platform applications.
• Experience with state management solutions in Flutter (e.g., Provider, BLOC, Riverpod).
• Familiarity with integrating RESTful APIs and third-party libraries.
• Understanding of mobile UI/UX principles and best practices to create intuitive and engaging user experiences.
• Experience with version control systems, particularly Git.


Preferred Qualifications:
• A strong portfolio of released applications on the App Store.
• Experience with agile development methodologies.
• Knowledge of continuous integration and continuous deployment (CI/CD) pipelines for mobile applications.


The base salary range is Associate to Senior Associate level – $150,000 - $170,000

Placement within the range provided above is based on the individual’s relevant experience and skills for the role and level. We are hiring across multiple levels for this job.

Base salary is only one component of our total compensation package. Employees may be eligible for a discretionary bonus, which is determined upon company and individual performance.
Salary range disclosure as required by S9427A when hiring in New York.

Our total rewards program is designed to support employee well-being and professional growth. We offer a competitive benefits package including a discretionary bonus, paid holidays, a 401(k), and comprehensive medical, dental, and vision coverage. Additional benefits include life insurance, short and long-term disability, Commuter FSA, Family Building Benefits, and more. All benefits are subject to eligibility requirements.

Lab49 is a 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, Washington DC, London, Budapest, New Delhi and Sydney.

Lab49/ION is committed to maintaining a supportive and inclusive environment for people with diverse backgrounds and experiences. We respect the varied identities, abilities, cultures, and traditions of the individuals who comprise our organization and recognize the value that different backgrounds and points of view bring to our business.

Lab49/ION adheres to an equal employment opportunity policy that prohibits discriminatory practices or harassment against applicants or employees based on any legally impermissible factor.

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