Roman Chugunov

Revolut (Senior Android Developer, Jan 2019 - Dec 2022)

My Contributions:

• Led the Android development for Rewards, a cashback feature, increasing user engagement and integrating partnerships with major brands (e.g., Nike, Decathlon, Greggs).
• Designed innovative features like in-app browser autofill and a dynamic map marker system for rewards display.
• Developed a robust Feature Toggles Framework for secure feature rollouts, reducing incidents and improving user experience.

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Lead Android Software Developer, Jan 2023 - Present

My Contributions:

• Delivered key Nutmeg features in the Chase app in tight deadlines with no bugs. Ensured full coverage with Unit, UI, SIT, and Appium tests. Conducted accessibility reviews and fixed critical issues to ensure compliance. Maintained close collaboration with design and product teams for smooth feature delivery.
• Guided other team members to introduce screenshot testing with Paparazzi to ensure UI consistency and readiness for new themes. Also facilitated performance testing, resulting in Nutmeg Android performance charts in Sentry.
• Investigated Kotlin Multiplatform (KMP) for unifying logic across platforms. Documented potential challenges and presented to the team for further exploration.
• Introduced Conventional build plugins to the project. Enhanced project structure by adopting hierarchical module ordering.
• Improved sprint planning with efficient grooming sessions and predictability (~86%). Balanced product and technical initiatives (80/20 split).
• Ensured strict adherence to UK financial regulatory security standards (FCA).

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Lead Android Software Developer, Jan 2023 - Present

My Contributions:

• Work closely with Chase Native engineers and React Native engineers to introduce new and existing Nutmeg functionality into Chase app
• My team are the first level of defense when some Nutmeg related issue is reported in Chase app
• Led the Android Integration team to integrate Nutmeg mobile experience into Chase UK mobile apps, overcoming the challenges of combining Android Native and React Native technologies.
• Organized workshops to enable testing and debugging of Nutmeg modules in Chase.
• Led technical explorations and brought team together to improve developer experience and address customer needs

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Malwarebytes (Senior Android Developer, Jun 2017 - Jun 2018)

My Contributions:

• Contributed to the launch of a premium subscription-based Android app with features like ransomware defense and real-time protection.
• Leveraged RxJava to optimize performance and reduce memory leaks.

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Practical tips for code reviews in large teams

Posted on 21 Oct 2023

In this article I emphasize the importance of an efficient code review process to maintain and enhance team productivity and code quality. The article suggests measuring team performance through metrics like the time a pull request (PR) spends in review and the number of open PRs. To improve the process, I advise to provide detailed PR descriptions, conducting self-reviews, and splitting large PRs into smaller, focused ones. For reviewers, it is recommended allocating dedicated time for reviews, offering prompt feedback, and using the opportunity to stay informed about the codebase and team practices. Overall, the article advocates for a balanced and collaborative approach to code reviews, fostering a cohesive and efficient development environment.

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Reusing Gradle modules in several applications

Posted on 26 Feb 2023

In the article I explore strategies for sharing Gradle modules across multiple Android applications, including direct module inclusion, using Git submodules, and publishing modules as independent Android libraries. I highlight the benefits and challenges of each approach, emphasizing the importance of making modules self-contained and managing dependencies, resources, and configurations effectively to ensure smooth integration and maintainability.

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Best practices for Unit Testing Android Apps with Mockk, Kotest and others

Posted on 10 May 2023

In the article I explore the evolution of unit testing in Android development, highlighting how modern tools like MockK and Kotest have simplified the process compared to a decade ago. I provide practical examples demonstrating the use of these frameworks, emphasizing their benefits in writing effective and maintainable unit tests. Additionally, I encourage developers to adopt these tools to enhance the quality of their tests and overall codebase.

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