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Senior Fullstack Engineer, Fraud Control
Posted on Sept. 11, 2025
- Helsinki, Finland
- 0 - 0 USD (yearly)
- Full Time
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Hakuaika päättyy
27.09.2025
Julkaisupäivä
10.09.2025
Työsuhdetyyppi
Vakituinen
Työaikatyyppi
Kokoaikainen
HELSINKI
We’re building digital services that make everyday in-store shopping smoother for both our staff and our customers. In the next few years, we’ll be putting a big focus on improving self-service experiences, and to make it happen, we are looking for a Senior Fullstack Engineer to join our Fraud Control team. You get to play a big role in this team’s future and ways of working, since you’ll be the first internal engineer.
In Fraud Control team, our mission is to build an intelligent and impactful fraud control and loss prevention solution that supports honest self-service in our stores, by preventing misuse-related losses without disrupting the customer experience. The model enables data-driven, predictable, easily trackable and manageable self-service operations.
The goal is to support the increase of self-service in stores, and in the near future, the work will be strongly linked to supporting stakeholder teams that develop self-service applications. Another key stakeholder team in the store operations area is Sales Flow, which creates background services that support sales and whose chosen reference architecture for event-driven operations is expected to be followed by the area's teams.
Your responsibilities and requirements
This is a newly gathered team and you will significantly influence the team's operations and technical plans. The Backend Engineer role is the team's first internal engineer role, and we hope that you have the ability to envision and implement the application to be a part of S-group's operating environment. Product engineering skills are important as well as the ability to see the service as part of a broader context and understand the service's significance in relation to other related services. The position requires solid senior-level expertise and the ability to mentor and guide others, but we hope that you are also a hands-on type of person. Understanding and interest in machine learning and handling large data sets is considered an advantage.
The team's working language is currently English, but understanding some Finnish will make it easier to operate in the area.
Technology wise we hope from you:
The Fraud Control team and its sister teams spend a lot of time at Ässäkeskus, at least two days a week, exchanging ideas and developing the area together towards world-class self-service. When your duties allow, you can also work remotely for part of the week with flexible arrangements.
What we offer
On top of a respectful salary, superb company benefits, and the finest colleagues, this is what we offer in return:
Interested? - We’ll be happy to hear from you
Please send us your CV and an application highlighting your task-related skills by 28.9.2025 at the latest. We will actively review applications and invite the most suitable candidates for further discussion. We will notify all applicants about the decision within two weeks after the deadline. You’ll meet our recruiter, hiring manager, and some of your colleagues during our recruitment process. The last step of our process is the suitability assessment.
At S-Group, we are committed to working in a diverse and inclusive work environment where all our employees' unique backgrounds, skills, and perspectives are respected and valued.
At SOK IT, Design & Digital Development, we are a group of 500 diverse and talented professionals, each bringing a unique perspective and skill set to our shared mission. As part of the S-Group, Finland’s largest private employer with over 40,000 employees, we are entrusted with guiding the future of one of the most impactful organizations in Finland. Our responsibility is clear – we provide strategic guidance and technological expertise to support all areas of the S-Group. We are uniquely positioned inside S-Group with billions of rows of data from multiple use cases and business domains, all intimately connected to Finns as they/we go about our daily routines. We build SW products, apps, and services highlighted by the regular dialogue between digital and IRL worlds, which genuinely makes our work consistently intriguing. We are design conscious, we believe in community internally and externally, pride ourselves on our open source commitment, our progressive path towards an Agile and DevOps culture, and our use of modern tools and democratic development standards for a holistic philosophy to modern and pure software development practices.
#SOK
Want to shape the future of in-store shopping? Join us in creating smarter digital services and better self-service experiences where your ideas and skills can make a real difference!
We’re building digital services that make everyday in-store shopping smoother for both our staff and our customers. In the next few years, we’ll be putting a big focus on improving self-service experiences, and to make it happen, we are looking for a Senior Fullstack Engineer to join our Fraud Control team. You get to play a big role in this team’s future and ways of working, since you’ll be the first internal engineer.
In Fraud Control team, our mission is to build an intelligent and impactful fraud control and loss prevention solution that supports honest self-service in our stores, by preventing misuse-related losses without disrupting the customer experience. The model enables data-driven, predictable, easily trackable and manageable self-service operations.
The most essential factor in the application's operation is event-driven, combining data from different sources, and a learning system. The work is highly experimental, especially regarding the data sources connected to the service and your work will be widely impactful in Finland’s retail industry.
The goal is to support the increase of self-service in stores, and in the near future, the work will be strongly linked to supporting stakeholder teams that develop self-service applications. Another key stakeholder team in the store operations area is Sales Flow, which creates background services that support sales and whose chosen reference architecture for event-driven operations is expected to be followed by the area's teams.
Your responsibilities and requirements
This is a newly gathered team and you will significantly influence the team's operations and technical plans. The Backend Engineer role is the team's first internal engineer role, and we hope that you have the ability to envision and implement the application to be a part of S-group's operating environment. Product engineering skills are important as well as the ability to see the service as part of a broader context and understand the service's significance in relation to other related services. The position requires solid senior-level expertise and the ability to mentor and guide others, but we hope that you are also a hands-on type of person. Understanding and interest in machine learning and handling large data sets is considered an advantage.
The team's working language is currently English, but understanding some Finnish will make it easier to operate in the area.
Technology wise we hope from you:
- Node.js and Typescript
- AWS
- Event-driven architecture
- Understanding and interest in machine learning and handling large data sets
The Fraud Control team and its sister teams spend a lot of time at Ässäkeskus, at least two days a week, exchanging ideas and developing the area together towards world-class self-service. When your duties allow, you can also work remotely for part of the week with flexible arrangements.
What we offer
On top of a respectful salary, superb company benefits, and the finest colleagues, this is what we offer in return:
- 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 they also live with their solutions, and so do millions of users.
- 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.
- Concrete and rewarding results, that you can experience yourself by using S-Group’s services, when doing your grocery shopping, fueling, or staying in a hotel.
- 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, hotels, online retail, and service stations), a lot of diverse growth and job opportunities.
- Occupational healthcare, sports, and culture benefits, lunch benefits in our staff restaurant, and access to the hobby and sports facilities in Ässäkeskus.
Interested? - We’ll be happy to hear from you
Please send us your CV and an application highlighting your task-related skills by 28.9.2025 at the latest. We will actively review applications and invite the most suitable candidates for further discussion. We will notify all applicants about the decision within two weeks after the deadline. You’ll meet our recruiter, hiring manager, and some of your colleagues during our recruitment process. The last step of our process is the suitability assessment.
At S-Group, we are committed to working in a diverse and inclusive work environment where all our employees' unique backgrounds, skills, and perspectives are respected and valued.
At SOK IT, Design & Digital Development, we are a group of 500 diverse and talented professionals, each bringing a unique perspective and skill set to our shared mission. As part of the S-Group, Finland’s largest private employer with over 40,000 employees, we are entrusted with guiding the future of one of the most impactful organizations in Finland. Our responsibility is clear – we provide strategic guidance and technological expertise to support all areas of the S-Group. We are uniquely positioned inside S-Group with billions of rows of data from multiple use cases and business domains, all intimately connected to Finns as they/we go about our daily routines. We build SW products, apps, and services highlighted by the regular dialogue between digital and IRL worlds, which genuinely makes our work consistently intriguing. We are design conscious, we believe in community internally and externally, pride ourselves on our open source commitment, our progressive path towards an Agile and DevOps culture, and our use of modern tools and democratic development standards for a holistic philosophy to modern and pure software development practices.
#SOK
SUOMEN OSUUSKAUPPOJEN KESKUSKUNTA, HELSINKI
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