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Caspian One

Senior Mobile Developer (React Native)

Toronto, ON, Canada

Full-time

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Job details

Job type: Full-time
Apply by: Nov 29, 2026
Experience: 5+ years’ experience designing, developing and supporting enterprise-level applications
Posting language: English
Posted: Oct 30, 2026

Original job description

Senior Mobile Developer (React Native) | Incorporated Contract | Long-term project

We’re looking for an experienced Senior Mobile Developer to join a major digital banking transformation, building a brand-new mobile banking application from the ground up.

This is a genuinely greenfield programme, so you’ll be joining at an early stage with the opportunity to influence how the application is architected, built and scaled rather than simply maintaining an established platform.

You’ll play a senior role within the mobile engineering team, helping establish the technical foundations and engineering standards for a new cross-platform application using React Native and TypeScript.

What you’ll be doing:

Designing and developing highly scalable mobile applications using React Native and TypeScript
Helping shape the architecture and technical direction of a new mobile platform
Establishing strong engineering principles, standards and development practices
Turning business and customer requirements into effective technical solutions
Working closely with Product, UX/Design, Architecture and Engineering teams
Integrating native iOS and Android capabilities where required
Advising stakeholders and senior leadership on technical approaches and technology decisions
Ensuring solutions meet enterprise expectations around security, performance, scalability and maintainability
Supporting continuous improvement across the wider mobile engineering environment

What we’re looking for:

5+ years’ experience designing, developing and supporting enterprise-level applications
Strong commercial experience with React Native
Strong TypeScript experience
Excellent understanding of mobile application architecture and performance optimisation
Strong knowledge of modern software engineering principles and best practices
Experience working directly with business and technical stakeholders
Strong communication and collaboration skills

Why consider it?

This is an opportunity to get involved at the beginning of a high-profile mobile transformation rather than joining once the major technical decisions have already been made. You’ll have genuine input into the architecture, engineering approach and long-term direction of the platform.

Greenfield mobile banking build
Significant technical influence
Long-term incorporated contract (multi-year)
Competitive contract rates
Hybrid working

Interested? Apply now or get in touch to find out more.

Apply About employer

More about this job

Responsibilities

Design and develop a new cross-platform mobile banking application using React Native and TypeScript, while shaping its architecture, technical direction, and engineering standards. Collaborate with product, design, architecture, engineering, and business stakeholders; integrate native iOS and Android capabilities; and ensure the platform meets enterprise requirements for security, performance, scalability, and maintainability.

Requirements

Requires at least five years of experience designing, developing, and supporting enterprise-level applications, with strong commercial React Native and TypeScript experience. Candidates should understand mobile architecture and performance optimization, apply modern software engineering practices, and communicate and collaborate effectively with business and technical stakeholders.

Skills

React Native
TypeScript
Mobile Architecture
Performance Optimization
iOS
Android
Software Engineering
Stakeholder Communication
Technical Leadership
Security
Scalability
Maintainability

Visa sponsorship

Not detected in the job text

Keywords

React Native
TypeScript
Mobile Banking
Digital Banking Transformation
Cross-Platform Application
iOS
Android
Mobile Application Architecture
Enterprise Applications
Performance Optimization
Software Engineering
Engineering Standards
Technical Direction
Native Capabilities
Security
Scalability
Maintainability
Stakeholder Collaboration
Product
UX/Design
Greenfield Development
Incorporated Contract

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