Senior Android Developer (Kotlin) – Fintech & AI

Stratospherec Limited; Whiteley; On-site; GBP 60,000 - 70,000; Full time

Job summary

Stratospherec is seeking a Senior Android / Mobile App Developer to join its growing fintech mobile team in Hampshire. You will build and maintain Android apps using Kotlin, delivering secure, scalable features for payments and user experiences.

You will collaborate with Product, UX/UI and Backend teams, apply AI tools to improve development workflows, and contribute to architectural decisions while writing clean, well-tested code.

Qualifications

• Commercial experience developing Android applications.
• Proven experience delivering mobile applications.
• Good understanding of Android development principles and architecture.
• Experience working with APIs and backend services.
• Strong understanding of software development, testing and version control.
• Experience working within an Agile development environment.
• Focus on quality, security and user experience.

Responsibilities

• Develop and maintain Android applications using Kotlin.
• Build secure, scalable and high-quality mobile payment features.
• Use AI tools and technologies within your software development workflow.
• Work with Product, UX/UI and Backend teams to deliver new features.
• Contribute to technical design and architectural decisions.
• Write clean, maintainable and well-tested code.
• Investigate and resolve technical issues.
• Identify opportunities to use AI to improve development processes and product capabilities.
• Contribute to the ongoing improvement of the mobile development environment.

Skills

Android development

Kotlin

APIs

Agile

Testing

Version control

Security

User experience

Mobile payments

AI tools

Job description

Stratospherec is seeking a Senior Android / Mobile App Developer to join its growing fintech mobile team in Hampshire. You will build and maintain Android apps using Kotlin, delivering secure, scalable features for payments and user experiences.

You will collaborate with Product, UX/UI and Backend teams, apply AI tools to improve development workflows, and contribute to architectural decisions while writing clean, well-tested code.