Summer Job: S-kaupat Software Engineer Trainee 

S-kaupat.fi is the online grocery store of S Group, a true helper in daily routines and tasks. S-kaupat is the market leader and serves several thousands of customers every day. S-kaupat can be found on the web and mobile, and the operations cover over 270 markets. With us, you'll have the possibility to impact the lives of most people living in Finland. Now you have a chance to join the journey as a Trainee! 

We’re looking for a Software Engineer Trainee to join the S‑kaupat team in Helsinki for a fixed-term role from June 1st to September 11th. S-kaupat is part of the SOK Digital Development community, where we develop web services and apps for the whole S Group, digitalizing the S Group services. Your future team includes developers, designers, and business, all working together as a team. This is a great chance to learn from experienced professionals and gain real project experience. In our hybrid working model, the team works at least two days a week at our Ässäkeskus office, but trainees and their mentors typically meet at the office even more. 

About the job 
As a trainee, you’ll spend the summer developing new features and handling maintenance tasks, e.g. fixing issues, updating libraries and writing tests together with your team. You’ll have the chance to work on different parts of the online grocery customer journey, with your responsibilities shaped by your own strengths and interests. Depending on what you enjoy, you can focus on frontend or backend development. On the frontend, you’ll work with TypeScript, React, React Native, Next.js, and Playwright, and you may also contribute to our mobile app. On the backend, you’ll build scalable serverless services on AWS using TypeScript, Node.js, Lambda functions, and various AWS technologies. Throughout the summer, senior colleagues will be there to guide and support you. 

Examples of what we've been working on lately in S-kaupat: 

• Quick deliveries and robot deliveries  
• Accessibility improvements related to the European accessibility act 
• Payment service renewal 
• Automated picking centers 
• AI product recommendations 

What are we looking for? 

You are curious and analytical, and you communicate effectively in English. You love to write code and solve problems. You respect software engineering as a team sport, so working with others is your preferred way to get things done. As our Trainee we expect you to be approaching the end of your engineering studies behind you, and through that a basic understanding of software engineering. While we don’t require prior work experience from the field, all experience in coding counts as your advantage – especially experience in frontend development with React or React Native or experience in backend development in the AWS environment. 

 
What we offer to you 

• An opportunity to gain know-how and technical competence in wide-ranging technology domains (like web, mobile, and cloud) as well as business domains (restaurants, online retail, and service stations), a lot of diverse growth and job opportunities.
• Opportunity to learn from talented colleagues.
• Ownership; You’re creating services directly for the end-users. You’re not visiting a project; you own the product together with your team.   
• Workplace democracy. Our ways of working are not set in stone. Together we’ll continuously improve the ways of developing products and services.   
• An opportunity to improve and influence the daily lives of S Group’s employees and millions of people. 
• A stable and flexible working environment based on cooperative values and principles, the possibility of choosing your daily work rhythm and location. 
• Influence and responsibility. Our engineers have a lot of freedom in their work, but we also live with their solutions, and so do millions of users too. 

Also: 

• Great work is rewarded, and all our employees are included in a performance-based bonus system. 
• You will have access to Finland’s most extensive employee benefits, which means discounts on groceries, restaurants, hotels, electronics, cosmetics, rainwear, home appliances, or even car washing. You can read more about our benefits here. 
• The S Group is Finland’s largest private employer, so opportunities never run out. Our career paths are often long, sometimes winding, but always full of possibilities. 
• We are safe, stable and Finnish cooperative group. Most of our tax revenue stays in the local area, as does the value generated through procurement and construction. The significant impact of SOK and the entire S-Group brings meaningfulness to everyday work. 

Employee satisfaction is important to us, and according to our employee engagement 
survey, as many as 86% of our employees would recommend us as an employer. We 
are also one of the most attractive employers among professionals in the commercial 
sector (Universum, 2025). Our work is guided by S Group’s shared leadership 
promises: I dare, I appreciate, and I deliver. 

 
At S Group, we are committed to fostering a diverse and non-discriminatory working 
environment where the unique backgrounds, skills, and perspectives of all our 
employees are respected and valued. 

 
Interested? We’ll be happy to hear from you! 
Please send us your CV and an application highlighting your related skills by 
8.2.2026 at the latest. We will actively review applications and invite the most 
suitable candidates for further discussion. We will notify all applicants about moving 
forward within two weeks after the deadline. 

 
Our interview process is both respectful and comprehensive. You’ll meet our 
recruiter, hiring manager and some teammates. We’ll discuss technical things as well 
as softer skills, validating your technical expertise, and performing a suitability 
assessment. The aim is to ensure we can offer you what you are looking for and to 
make sure you’re the right person for the job. Despite the outcome, we strive to make 
the process a positive one. 
 

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