Lead Software Engineer (React)

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.

About the role

We are looking for an experienced Lead Software Engineer (Frontend) to join the Colleague Commerce team. This team builds tools used by store colleagues to handle customer orders, queries and in‑store online ordering.

You will lead the technical delivery of a major rewrite of the DotCom Plus platform (currently ATG‑based): a greenfield rebuild that will selectively reuse existing components, with an initial rollout for B&Q and multi‑brand deployment planned from early 2027. The role combines hands‑on system design, technical leadership and close collaboration with product and operations to deliver a highly reliable, customer‑facing platform used in 24/7 store operations.

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

Responsibilities

• Lead system design and architecture for frontend and service interactions, ensuring solutions are scalable, maintainable and aligned with microservices principles
• Own technical direction for the squad: set standards, review designs, and drive decisions that balance short‑term delivery with long‑term maintainability
• Mentor and coach engineers, fostering growth, code quality and a culture of continuous improvement
• Collaborate cross‑functionally with backend engineers, product managers, designers and operations to define product vision and delivery plans
• Champion frontend quality: testing, performance, accessibility (WCAG) and reliable CI/CD pipelines
• Drive improvements in development lifecycle, observability, deployment practices and incident response for a mission‑critical system
• Represent the team to stakeholders, communicating technical trade‑offs, progress and risks clearly

Skills

• Proven experience designing and delivering complex frontend solutions and distributed systems
• Strong frontend expertise with JavaScript and React (TypeScript preferred)
• Experience with Node.js for backend or server‑side components
• Solid understanding of microservices architecture, REST APIs, JSON and GraphQL
• Hands‑on experience with frontend testing and automation (e.g., Playwright, Jest, Cypress)
• Experience building and maintaining CI/CD pipelines and deployment automation
• Good knowledge of web architecture, performance optimisation and web server technologies
• Strong SQL skills and familiarity with validating data flows across integrated systems
• Excellent communication and stakeholder management skills; able to influence technical strategy
• Excellent command of English (written and spoken)

Nice to have

• Experience with AWS and cloud‑native patterns
• Familiarity with Kafka or event‑driven architectures
• Prior exposure to retail/e‑commerce platforms, especially ATG/DotCom ecosystems
• Experience with Remix or other modern frameworks and server‑side rendering patterns
• Background in observability, performance testing and reliability engineering

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

• 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

To get to know us better visit:

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Kingfisher plc