Lead Software Engineer (Mobile)

Who we are and what we create?  

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 28,000 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 a highly motivated and experienced Lead Software Engineer (iOS & Android) to join our Engineering team. As a Lead Engineer, you will guide the design, development, and delivery of high-quality mobile applications while mentoring and supporting other engineers in the team. 

You will play a key role in shaping our mobile architecture, introducing best practices, and driving the adoption of modern technologies, enabling shared solutions across iOS and Android platforms. Working closely with product managers, designers, and stakeholders, you will ensure that our mobile apps are scalable, secure, and deliver exceptional user experiences. 

If you're passionate about mobile engineering, leading cross-platform initiatives, and mentoring teams to build world-class software, this is the role for you. 

Responsibilities

• Lead and contribute to the design, development, and maintenance of high-quality iOS and Android applications. 

• Drive the adoption and implementation of Kotlin Multiplatform for building shared components across mobile platforms. 

• Utilise Swift, SwiftUI, and Xcode for modern iOS development, and Kotlin and Jetpack Compose for Android. 

• Define and enforce coding standards, best practices, and architectural patterns (MVVM, MVP, MVI). 

• Oversee integration of RESTful APIs, GraphQL services, SDKs, and third-party dependencies. 

• Ensure security best practices are followed across mobile applications. 

• Mentor and coach engineers, conducting code reviews and supporting continuous learning within the team. 

• Collaborate with product managers and designers to translate user needs into effective and elegant mobile experiences. 

• Partner with DevOps teams to optimise CI/CD pipelines and cloud infrastructure for mobile delivery. 

• Stay ahead of industry trends, evaluating new tools and frameworks, and championing their adoption when beneficial. 

Skills and experience

• Extensive professional experience in mobile app development across iOS and Android. 

• Deep knowledge of Swift, SwiftUI, Xcode, and Kotlin, Jetpack Compose. 

• Strong expertise in Kotlin Multiplatform (KMP) for cross-platform solutions. 

• Solid understanding of mobile architectural design patterns (MVVM, MVP, MVI). 

• Experience integrating RESTful APIs, GraphQL services, SDKs, and 3rd party libraries. 

• Familiarity with AWS and cloud-based infrastructure for scalable mobile applications. 

• Strong knowledge of mobile app security and best practices. 

• Demonstrated experience mentoring engineers and leading cross-functional teams. 

• Excellent communication, collaboration, and stakeholder management skills. 

• Published technical articles, blog posts, or conference talks on mobile development. 

• Active participation in iOS or Android communities (meetups, online groups, forums). 

• Proven experience leading initiatives in cross-platform mobile development. 

• Excellent command of English (written and spoken) 

To get to know us better visit: 

LinkedIn 

Kingfisher plc