Senior Android Developer

Stratospherec Ltd; Fareham; On-site; GBP 60,000 - 70,000; Full time

Job summary

Stratospherec Ltd is seeking an experienced Senior Android / Mobile App Developer to join its growing fintech mobile team in Hampshire. You will develop and maintain Android apps using Kotlin, delivering high-quality features for real customers.

You’ll apply AI tools to improve workflows, collaborate with Product, UX/UI and Backend, and contribute to design decisions. The role emphasizes security, performance and a strong user experience, with a permanent contract.

Qualifications

• Commercial experience developing Android applications using Kotlin.
• Proven track record delivering mobile apps.
• Strong understanding of Android architecture and best practices.
• Experience integrating APIs and backend services.
• Familiarity with Agile development.
• 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

Kotlin for Android

Android architecture

APIs & Backend services

Agile development

Version control (Git)

Testing / QA

AI-assisted development

Tools

Android Studio

Git

CI/CD pipelines

Job description

Senior Android / Mobile App Developer

Location: Hampshire

Salary: £60,000 to £70,000 (dependent on experience)

Contract: Permanent

Build the future of mobile Fintech apps

Stratospherec is working with an innovative Fintech business looking for an experienced Senior Android / Mobile App Developer to join its growing mobile development team.

This is an exciting opportunity for a developer who enjoys building high-quality mobile applications and wants to work on products used by real customers in a fast-moving Fintech environment.

You’ll play a key role in developing Android applications using Kotlin, while also using AI tools and technologies to improve your development workflow, productivity and software delivery.

The role

• 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

What we're looking for

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

Experience with native iOS development using Swift would be highly desirable, but is not essential.

Experience within payments, fintech or another highly regulated environment would also be advantageous but not essential.

Why join?

You’ll be joining a technology-focused fintech business where you'll have the opportunity to work on high-impact mobile products, influence technical decisions and use modern mobile, AI and payment technologies.

If you're an experienced Senior Mobile App developer with strong Android experience, we'd love to hear from you.