Senior Software Engineer - Backend (Colleague Experience)

Tesco Poland  •  Kraków  •  Full-Time  •  Apply by 31-Dec-2025 About the role

Project Description:

We are developing 4 Java-based APIs that form the backbone of a large suite of applications used by Tesco store and office colleagues. These applications aim to replace traditional paperwork and fully digitalize everyday operational tasks, improving efficiency, accuracy, and user experience across the business.

What is in it for you

Salary

UoP 26 000 - 33 000 PLN gross/month

B2B 27 000 - 35 000 net/month

Hybrid Working

We know life looks a little different for each of us. That’s why at Tesco, we always welcome chats about different flexible working options. Some people are at the start of their careers, some want the freedom to do the things they love. Others are going through life-changing moments like becoming a carer, adapting to parenthood, or something else. So, talk to us throughout your application about how we can support. This role requires you to be based in or near Kraków, as you will spend 60% (3 days) of your week collaborating with colleagues at our office locations or local sites and the rest remotely.

Benefits

Tesco is a diverse and exciting employer, dedicated to being #aplacetogeton, providing career-defining opportunities to all of our colleagues. If you choose to join our business, we will provide you with (for all):

• Permanent contract from the go – as a sign of our trust in your abilities
• MacBook as your tool for work
• Learning opportunities - certified technical training and learning platforms like Udemy, Pluralsight and O’reily
• Referral Bonus
• Sports activities with a personal trainer in the office

Benefits for colleagues on employment of contract only:

• Additional 4 days of paid leave to support your well-being and family life
• Up to 20% yearly salary bonus – based on both individual and business performance
• Private healthcare (LuxMed)
• Cafeteria & Multisport
• Supporting those, who are not yet eligible for full holiday entitlement, by expanding their pool from 20 to 25 days
• Relocation Help
• IP Tax Deductible Costs

If that sounds exciting, then we'd love to hear from you.

Tesco is committed to celebrating diversity and everyone is welcome at Tesco. As a Disability Confident Employer, we’re committed to providing a fully inclusive and accessible recruitment process, allowing candidates the opportunity to thrive and inform us of any reasonable adjustments they may require.

You will be responsible for

Role Responsibilities:

As an SDE3, you will own the entire application lifecycle, including:

• Requirements Gathering - Collaborating closely with business stakeholders to understand needs and translate them into technical solutions.
• System Design & Architecture - Designing scalable, secure, and performant APIs.
• Implementation - Writing clean, maintainable, and efficient code.
• Testing & Quality Assurance - Ensuring high reliability through automated and manual testing.
• Deployment & Monitoring - Managing releases, monitoring performance, and making necessary optimizations.
• Support & On-Call - Providing production support and participating in on-call rotations.

You will work in a high-collaboration environment, engaging with product owners, business analysts, and other engineering teams to deliver impactful solutions. While the primary focus is backend development, front-end experience is a plus, as we aim to evolve into a cross-functional team in the future.

Key Technologies:

• Languages & Frameworks: Java 17+,Micronaut, Spring Boot, RESTful APIs
• Data: PostgreSQL
• Cloud & Infrastructure: Kubernetes, Docker, Azure
• CI/CD & Automation: Jenkins, GitHub Actions, SonarQube
• Testing: Selenium
• Monitoring & Logging: Prometheus, Grafana, Runscope
• Version Control: Git + Github

You will need

• 6+ years of hands-on experience delivering high-quality applications.
• Strong background in Agile methodologies (Scrum or Kanban).
• Fluent English with clear and concise communication skills.
• Practical experience with cloud platforms such as Azure, AWS, or similar.
• Proven ability in system design and architecture.
• Demonstrated experience in owning projects end-to-end and providing technical leadership.
• Capability to define technical direction and set the vision for a project.
• Previous involvement in mentoring and guiding less experienced engineers, fostering their technical growth.
• A proactive, self-driven attitude with a focus on delivering value

About us Tesco is a leading multinational retailer, with more than 330 000 colleagues.    Our software is used by millions of people across several countries every day. Whether it’s the tills and websites our customers use, or the systems our colleagues and partners use, you’ll play your part in keeping it running like a well-oiled machine. And when a business problem pops up? You and the creative minds in our team will be challenged to solve it.    As Tech Hub we cooperate within the group of Tesco Technology Hubs located in the UK, Poland, Hungary, Czech Republic and India.    What our colleagues like the most at Tesco:   

• We develop our own products 
• We make an impact; large scale of operation 
• Accountability and respect are given to us 
• We cooperate and support each other 
• There are great colleagues who are divided into small teams here 
• We can develop and learn new things