Senior Android Engineer

Incard; Greater London; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Cash compensation

Stock options

Paid time off

Birthday off

Job summary

Incard is seeking a Senior Android Engineer to own and evolve our Android app used by modern e-commerce businesses. You will work with Android, iOS, Backend and Product teams in London to deliver high-quality features.

You will design scalable architectures beyond MVP, optimize performance and memory, write tests, and contribute to engineering standards.

Qualifications

• 5+ years of experience building production Android apps in fast-paced environments.
• Strong expertise in Jetpack Compose, including performance optimisation and memory management.
• Proven experience designing scalable Android architectures using clean, modular approaches.
• Solid understanding of Coroutines and Flow for concurrency and state management.
• Experience writing unit tests and UI tests.
• Product-minded engineer with strong attention to detail and edge cases.
• Comfortable using AI tools to accelerate development responsibly.
• Strong communication skills, open to feedback and continuous improvement.
• Proactive problem-solver who takes ownership rather than waiting for direction.

Responsibilities

• Build, scale, and maintain Incard’s Android application using Kotlin and Jetpack Compose
• Design and evolve scalable Android architecture beyond MVP, using clean, modular patterns
• Collaborate closely with Product, Backend, Android and iOS teams to deliver high-quality features
• Own performance optimisation, stability, and memory management across the app
• Apply product thinking when implementing features - not just engineering execution
• Write and maintain unit tests, UI tests, and automated checks to ensure long-term quality
• Participate actively in code reviews, refactoring efforts, and technical discussions
• Help raise the bar for Android engineering standards, tooling, and best practices

Skills

Android

Jetpack Compose

Architecture design

Coroutines & Flow

Unit tests

UI tests

Product mindset

Communication

Ownership

Tools

Kotlin

Clean Architecture

Modular design

Job description

About Incard

Incard's mission is to build the financial operating system for entrepreneurs.

About Incard

Incard's mission is to build the financial operating system for entrepreneurs.

We are focused on creating a system where business banking, financial tools, and application logic are coordinated into a single control layer.

Through the app store, entrepreneurs and developers can build industry-specific functionality as their business evolves.

Our team is small, highly motivated, and focused on engineering excellence. We operate with a flat organizational structure. All employees are expected to be hands-on and to contribute directly to the company’s mission. Leadership is given to those who show initiative and consistently deliver excellence. All engineers are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates.

Who We’re Looking For

We’re looking for a Senior Android Engineer who cares deeply about architecture, performance, and product quality and who enjoys building scalable, well‑crafted mobile experiences in a complex domain.

You’ll collaborate closely with Android, iOS, Backend, and Product teams to build and evolve Incard’s Android app, used daily by modern e-commerce businesses to manage spending, cards, and financial insights.

This role is ideal for someone who thrives in fast-moving environments, takes ownership beyond tickets, and brings strong product thinking alongside technical excellence.

What You’ll Do

• Build, scale, and maintain Incard’s Android application using Kotlin and Jetpack Compose
• Design and evolve scalable Android architecture beyond MVP, using clean, modular patterns
• Collaborate closely with Product, Backend, Android and iOS teams to deliver high-quality features
• Own performance optimisation, stability, and memory management across the app
• Apply product thinking when implementing features - not just engineering execution
• Write and maintain unit tests, UI tests, and automated checks to ensure long-term quality
• Participate actively in code reviews, refactoring efforts, and technical discussions
• Help raise the bar for Android engineering standards, tooling, and best practices

What We’re Looking For

• 5+ years of experience building production Android applications in fast-paced environments
• Strong expertise in Jetpack Compose, including performance optimisation and memory management
• Proven experience designing scalable Android architectures using clean, modular approaches
• Solid understanding of Coroutines and Flow for concurrency and state management
• Experience writing unit tests and UI tests
• Product-minded engineer with strong attention to detail and edge cases
• Comfortable using AI tools (e.g. Cursor, modern LLMs) to accelerate development responsibly
• Strong communication skills, open to feedback and continuous improvement
• Proactive problem-solver who takes ownership rather than waiting for direction

Our Technical Stack

• Clean Architecture with feature-based modular structure
• Repository & use-case patterns
• Kotlin Coroutines & Flow
• Jetpack Compose
• Hilt for dependency injection
• JUnit 4, MockK, Coroutines Test
• Retrofit, GSON, Coil
• GitHub Actions & Fastlane for CI/CD
• Detekt for static analysis
• 100% Kotlin, Gradle (Kotlin DSL), KSP
• Firebase, Sentry, Google Analytics

Benefits:

• Competitive cash-based compensation
• Incard stock options
• 25 days of paid time off per year, plus bank holidays and your birthday off
• Global health insurance and unlimited paid sick leave