Senior Mobile Developer – Android​/iOS

This role is four days onsite at our Seneca One Buffalo, NY location, with the flexibility to work from home one day per week Overview:
We are seeking a Senior Mobile Developer to join our mobile engineering team focused on delivering secure, scalable, and user-friendly banking applications. This role is ideal for an experienced mobile engineer with strong expertise in either Android or iOS development, with preference given to candidates who have experience across both platforms.

The ideal candidate will have hands-on experience building enterprise-grade mobile applications, preferably within banking, fintech, or other regulated industries. They will possess a strong understanding of secure mobile development practices, automated testing, modern development frameworks, and the ability to work independently with minimal supervision while contributing to technical leadership within the team.

Primary Responsibilities:

Design, develop, and maintain mobile applications for banking and financial services on Android and/or iOS platforms.

Build high-quality native applications using Android technologies (Java, Kotlin) and/or iOS technologies (Swift, SwiftUI, UIKit, Objective-C).Collaborate with product managers, designers, architects, backend engineers, and other cross-functional partners to deliver exceptional customer experiences.

Experience implementing secure mobile applications, including secure credential/token handling, encryption, certificate/network security, biometric authentication, secure local storage, protection of sensitive data, and secure API communication.

Familiarity with mobile application security principles and common mobile threats, including OWASP Mobile Application Security / MASVS concepts.

Experience integrating mobile applications with RESTful APIs and backend services, including authentication, error handling, caching, serialization, and resilient network communication.

Develop and maintain automated tests to ensure application reliability, performance, and maintainability.

Troubleshoot and resolve complex production issues using application logs, crash data, diagnostics, and performance analysis, with emphasis on root-cause identification and preventative remediation.

Work autonomously, managing priorities and delivering results in a fast-paced environment.

Mentor engineers, conduct code and design reviews, and contribute to technical leadership, architecture decisions, engineering standards, and mobile development best practices.

Stay current with mobile development trends, frameworks, tools, and emerging technologies across Android and iOS ecosystems.

Design, improve, and support CI/CD pipelines, build automation, code-quality controls, and mobile application release processes.

Understand and adhere to the Company's risk and regulatory standards, policies, and controls in accordance with the Company's Risk Appetite. Identify risk-related issues requiring escalation to management.

Promote an environment that supports a culture of belonging and reflects the M&T Bank brand.

Monitor and improve application performance, stability, startup time, memory utilization, responsiveness, and production reliability.

Maintain internal control standards, including timely implementation of audit findings and remediation activities.

Complete other related duties as assigned.

Tech Stack:oNative mobile architectureoSecure codingoREST APIsoTestingoCI/CDoGit/source controloAccessibilityoPerformance/reliabilityoProduction troubleshootingoArchitecture/design patternsoMentoring/code reviewsoAndroid SpecializationAndroid SDK / Android platform APIsKotlin Coroutines and FlowJetpack librariesDependency injection such as Hilt/DaggerGradleApplication lifecycle and state…