Senior Android Developer, New York

ION · New York · Posted 2026-09-17

Lab49 is an award-winning specialist consultancy that creates bespoke technology in partnership with the most important companies in finance. We were founded in 2002 to bring Silicon Valley solutions to Wall Street’s door. Since then, we have worked on successive waves of technological change, including distributed computing, high-speed automation, enterprise UX and digital distribution (for which Lab49 was among the first significant practices established on Wall Street), DevOps, cloud and data science.

Today, we are an established partner in financial markets, having delivered hundreds of projects for clients including all the world’s tier-one investment banks and many of the largest buy-side firms globally.

Lab49 is currently looking for a Senior Android Developer who 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.

WHAT YOU'LL BE DOING

Design and build advanced applications for the Android platform utilized in financial services
Work with team leadership, Product Owners, Designers, and other technologists to create software to be deployed in enterprise and public app stores based on business and technical priorities
Actively contribute to the adoption of robust software architecture, development and engineering best practices, and the adoption of new technologies
Break down complex problems into elegant technical solutions to intelligently solve problems for Lab49's clients
Utilize industry best practices to ensure code quality and robustness including edge cases, usability and general reliability
Advocate test-driven development and deliver high quality, resilient solutions
Resolve defects and enhance application performance by analyzing and optimizing code

This is an onsite role - 5 days/ week in the WTC are in NYC

WHAT YOU SHOULD HAVE

8+years of experience designing and building complex, commercial-grade software systems
Proficiency in Kotlin and experience with native Android development tools such as Jetpack Compose
Experience in consumer banking including account management and onboarding.
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.

BONUS POINTS

Experience in fraud management/KYC/AML and regulatory reporting
Experience using on device biometrics for authentication
A strong portfolio of released applications on the Google Play 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

WHY LAB49

At Lab49, you'll work on complex, meaningful challenges alongside talented engineers, designers, and consultants. You'll gain exposure to a wide range of technologies, business domains, and client environments while continuing to grow your career.

We value curiosity, judgment, and ownership. If you care about quality, enjoy helping others succeed, and want your work to have a meaningful impact, Lab49 is a place where you can thrive.

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.

About ION

ION Group provides solutions for electronic trading, position management, pricing, risk management, and downstream processing for clients.