Must have

• Android

• Kotlin

• Functional programming

• MVVM

• Clean Architecture

• REST API

• GraphQL

• Security

• iOS

• English

Requirements description

Skills and experience

• Extensive experience in developing and delivering Android applications at scale.
• Strong proficiency in Kotlin, with a deep understanding of object-oriented and functional programming principles.
• Solid experience applying modern architectural patterns such as MVVM, MVI, and Clean Architecture.
• Proven ability to design and integrate RESTful APIs and GraphQL services effectively.
• Strong awareness of mobile app security best practices and the ability to implement them in production environments.
• Hands-on experience with, or strong interest in, Kotlin Multiplatform and cross-platform mobile development.
• Practical experience using Jetpack Compose to build modular, composable, and maintainable UIs.
• Familiarity with iOS development concepts and willingness to collaborate on cross-platform solutions.
• Active engagement in the Android community (e.g., meetups, open-source contributions, blogs, or developer forums).
• A proactive mindset, demonstrating leadership, mentorship, and a commitment to continuous learning and innovation.
• Excellent command of English (written and spoken)

Offer description

We’re Kingfisher, a team made up of over 74,000 passionate people who bring Kingfisher - and all our other brands: Castorama, B&Q, Screwfix, Brico Dépôt and Koçtaş - to life. That’s right, we’re big, but we have ambitions to become even bigger and even better. We want to become the leading home improvement company and grow the largest community of home improvers in the world. And that’s where you come in.

At Kingfisher, our customers come from all walks of life, and so do we. We want to ensure that all colleagues, future colleagues, and applicants to Kingfisher are treated equally regardless of age, gender, marital or civil partnership status, colour, ethnic or national origin, culture, religious belief, philosophical belief, political opinion, disability, gender identity, gender expression or sexual orientation.

We are open to flexible and agile working. Therefore, we offer colleagues a blend of working from home and our office, located in Kraków. Talk to us about how we can best support you!

At Kingfisher, we value the perspectives that any new team members bring, and we want to hear from you. We encourage you to apply for one of our roles, even if you do not feel you meet 100% of the requirements.

In return, we offer an inclusive environment, where what you can achieve is limited only by your imagination! We encourage new ideas, actively support experimentation, and strive to build an environment where everyone can be their best self. Interested? Great, apply now and help us to Power the Possible.

We offer a competitive benefit package and plenty of opportunities to stretch and grow your career:

• Up to 25,000 PLN gross per month on an employment contract
• Private medical healthcare at LUXMED (including dentalcare) for you and your family
• Medicover sports card (Fit&More package)
• Life insurance financed by the employer
• 30-minute lunch break included in the 8-hour working day
• Work in a highly professional and stimulating atmosphere
• Training & Buddy programme that will allow you to quickly adapt to your new role
• Wellbeing programme for employees
• Co-financing of monthly tickets for the public transport in Krakow
• Comfortable working environment in the office and the possibility of home office
• Language courses, accounting courses, access to LinkedIn Learning and the possibility of co-financing studies and certification
• Employee referral programme

About the role

As part of Kingfisher’s Engineering Centre in Krakow, we are expanding our teams dedicated to Castorama Polska – one of the country’s most recognized DIY retail brands. These teams will be shaping the future of retail by building and evolving Castorama’s mobile app, e-commerce platform, and the back-office systems that power store operations across Poland. If you join us, you will not just be writing code – you will be directly influencing how millions of customers shop, browse, and interact with their local Castorama stores. From launching a new generation of mobile apps to streamlining in-store tech, your work will have a real, visible impact in your own backyard.

We are seeking an experienced and highly skilled Senior Software Engineer with strong expertise in Android development (Kotlin) and a solid understanding of Kotlin Multiplatform to join our Software Engineering team and contribute to our new Android KMP programme.

If you're looking for an exciting opportunity to step out of your comfort zone and make a real impact by building better software, this is the job for you!

Your responsibilities

1. Lead and contribute to the design, development, and maintenance of scalable, high-quality Android applications.
2. Drive the technical direction of our new Android codebase, ensuring best practices in architecture, performance, and maintainability.
3. Design and implement Kotlin Multiplatform components to be shared across Android and iOS applications.
4. Utilize Jetpack Compose to build modular, composable, and reusable user interfaces.
5. Ensure code quality and reliability through comprehensive unit and integration testing.
6. Collaborate with cross-functional teams, including product managers, designers, and iOS engineers, to deliver seamless user experiences.

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