Software Engineer - NMP Fraud

The Company

We are Blocket, Sweden’s largest and most popular marketplace. We are proud of our work to enable second-hand trade in Sweden and our contribution to a positive environmental impact.

Bilbasen, Blocket, DBA, FINN, Oikotie, Rakentaja & Tori. Did you spot any familiar names? Then you already know a bit about Schibsted Nordic Marketplaces (NMP)! In January 2023 we pooled our strengths, knowledge, and resources and we are now collaborating tightly at the Nordic level.

Want to get a feel for the Blocket, NMP, or Schibsted vibe? Check us out on Instagram (Blocket, Schibsted) & LinkedIn (Blocket, Schibsted)!

The position

You will be part of the very diverse and highly specialised anti-fraud team whose mission is to build the tools that underpin fraud prevention in all the largest marketplaces in the Nordics. We offer an inclusive and stimulating work environment where your contribution truly makes a difference! Interesting challenges will exist at every level, providing you with the opportunity to grow and develop in your role.

We are at an exciting point in transitioning to NMP and as a developer, you'll have significant influence over the direction of our projects. We have many exciting tech tracks within the team and you will have an opportunity to deepen and hone your skills in any one of them. Including ML/AI, bleeding edge frontend, and distributed microservice architecture.

Responsibilities may include

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Build the event-driven platform that is the beating heart of our NMP fraud-prevention tools.

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Take the lead or join forces in advancing our cutting-edge ML tech stac k.

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Design and architect systems that scale effortlessly and adapt like a chameleon.

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Elevate software quality using industry best practices.

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Fuel our teams by sharing your innovative ideas to turbocharge our pace.


The Tech

Our tech stack is based on a highly distributed micro-service architecture with many decoupled services which enables our teams to make autonomous decisions about their tech choices. In the fraud team the majority of our services are written in Java or Kotlin, but in NMP we deploy services in Go, Python, C# and even a few in Haskel!.

To ensure seamless deployment and scalability, we leverage the capabilities of Google Cloud and AWS, deploying our services through Docker and Kubernetes. To facilitate efficient communication between services, we employ Kafka as an asynchronous messaging system.

Who you are

We believe you are a experienced developer with some knowledge about ML and other emerging AI tech. You are able to independently lead the development of new features and enjoy discussing and debating code and solutions with your peers. You like sharing your knowledge and above all, you are curious and continuously strive to learn new things.

Your skills may include

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Hands-on experience in Kotlin or Java backend development and an understanding of the Spring-Boot framework.

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A keen interest in Machine learning techniques and other emerging AI technologies.

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Experience developing distributed systems in a micro-service architecture.

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Experience with event-driven architectures such as Kafka or Google Pub/Sub.

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A collaborative friendly attitude, with passion and flexibility to learn new tools and skill sets.


Hi, I am your new manager!

My name is Alexander, and I've had the pleasure of working at Blocket in various positions for the past 5 years. From being a front-end developer to a full-stack developer and a Tech Lead, I recently transitioned into management. As a manager, I strive to embody the ideal from a developer's point of view. I strongly believe that trust, autonomy, and transparency are the keys to creating a happy and efficient developer. I am passionate about technology and love participating in the technical discussion but my ambition is to empower developers to make any and all architectural and technical decisions themselves.


The Blocket journey began in Skåne 1996 - since then the concept of Blocket has been exported to over 40 other countries. Today, Blocket, which is owned by the media group Schibsted, is Sweden’s largest online marketplace. There are approximately 600 000 items, vehicles, jobs and housing being advertised and discovered by its 5 million visitors every week. The value for all advertisements in 2018 amounted to SEK 714 billion - equal to 15 percent of Sweden’s GDP. Thanks to second-hand trading at Blocket, 0.8 million tonnes of greenhouse gases can be avoided every year. The output being equivalent to if Stockholm’s city roads stood empty for about a year. Blocket has approximately 240 colleagues and the office is located in central Stockholm. Together, we are passionate about second-hand trading, the environment and the continued growth of Blocket - one of Sweden’s largest sites. We are proud environmental heroes and enjoy working together. Read more on our career page.