Senior Android Engineer - Mobile Security (Kotlin/Jetpack)

Coltech; Manchester; On-site; GBP 92,000 - 148,000; Part time

Job summary

Coltech in Manchester seeks a Senior Android Engineer (Contract) to join its Mobile Security team, delivering security-focused Android applications at scale.

You will design and build modular, Kotlin/Java apps using modern architecture, collaborating with security and engineering teams, and driving best practices, testing, and CI/CD in a regulated banking environment.

This role offers exposure to security hardening, performance tuning, and scalable delivery within enterprise platforms.

Qualifications

• Strong experience designing and building Android apps with Kotlin/Java.
• Experience with modularised Android codebases and Jetpack components.
• Familiarity with Android security best practices.
• Experience with UI testing and CI/CD pipelines.
• Knowledge of SOLID principles and scalable architectures.

Responsibilities

• Design, develop, and maintain Android apps, libraries, and security components.
• Build scalable, modular mobile solutions using modern Android architecture patterns.
• Collaborate with stakeholders to architect secure mobile solutions.
• Drive best practices in development, testing, and code quality.
• Optimise performance, reliability, and scalability.
• Contribute to design discussions and influence engineering strategy.
• Support automated testing, CI/CD, and deployment initiatives.
• Champion clean code and continuous improvement.
• Work with Kotlin/Java, Git, and security-focused Android development.

Skills

Kotlin

Java

Android SDK

Jetpack Compose

Jetpack Libraries

SOLID Principles

Modularised Android codebase

UI tests

CI/CD

Agile

Android architecture patterns

Performance tuning

Security principles

Tools

Git

Job description

Coltech in Manchester seeks a Senior Android Engineer (Contract) to join its Mobile Security team, delivering security-focused Android applications at scale.

You will design and build modular, Kotlin/Java apps using modern architecture, collaborating with security and engineering teams, and driving best practices, testing, and CI/CD in a regulated banking environment.

This role offers exposure to security hardening, performance tuning, and scalable delivery within enterprise platforms.