Senior Software Engineer (Node/AWS)

Senior Software Engineer (Node/AWS)

(Hybrid/Kraków – 1 day per week in the office) 

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. 

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

• 20,000 - 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   

We are looking for a highly motivated and experienced Senior Backend Engineer to join our Software Engineering team. You will be working across the full software development lifecycle and contributing to the design and development of platforms and services using Node.js and TypeScript, with a strong focus on AWS. 

In this role, you will design, build, and operate scalable backend services that support core business capabilities. Working closely with product managers, frontend engineers, and other stakeholders, you will help deliver high-quality features while shaping technical solutions and architectural decisions. 

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  

• Design, develop, and maintain scalable, cloud-native backend services using Node.js and TypeScript, primarily on AWS. 

• Take ownership of solutions across the full software development lifecycle, from design and implementation through to deployment and production support. 

• Collaborate closely with product, frontend, and engineering stakeholders to deliver high-quality, business-critical features. 

• Contribute to architectural decisions, ensuring systems are reliable, secure, and maintainable. 

• Apply DevOps practices, including automated testing, CI/CD pipelines, and infrastructure-as-code where appropriate. 

• Ensure services are production-ready by embedding monitoring, logging, and observability from the outset. 

• Provide technical leadership within the team, including mentoring other engineers and promoting best engineering practices. 

• Continuously improve system performance, reliability, and code quality through iteration, feedback, and data-driven improvements. 

• Strong commercial experience building backend services using Node.js and TypeScript in production environments. 

• Extensive experience designing and operating cloud-native solutions on AWS, with hands-on knowledge of core services. 

• Practical experience with AWS CDK (or other Infrastructure as Code tools) to design, provision, and manage cloud infrastructure. 

• Solid understanding of API design, distributed systems, and scalable backend architectures. 

• Experience with CI/CD pipelines, automated testing, and modern DevOps practices. 

• Ability to take technical ownership, contribute to architectural decisions, and drive engineering best practices. 

• Strong collaboration and communication skills, with experience working in cross-functional teams. 

• Excellent command of English (written and spoken)