Senior Backend Engineer – Oncology Information System

RaySearch Laboratories AB (publ); Stockholms kommun; On-site; SEK 900,000 - 1,200,000; Full time

Job summary

RaySearch Laboratories AB (publ) is seeking a skilled backend developer to join the RayCare Core team in Stockholm. You will contribute to designing and implementing a modern, robust software platform for our oncology information system.

You bring a strong background in C#/.NET, SQL Server, and domain-driven design, with experience in event-sourcing and CQRS. Collaboration with cross-functional teams is essential to deliver safe, scalable solutions.

Qualifications

• M.Sc. in Computer Science, Engineering physics or equivalent academic degree.
• Minimum five years of backend development experience with complex products.
• Expertise in C#/.NET.
• Proficient with SQL Server.
• Experience with client-server based systems.
• Knowledge of domain-driven design.
• Knowledge of event-sourcing.
• Knowledge of CQRS/CQS.

Responsibilities

• As a core team developer, you will be part of designing and implementing a robust and modern software platform for our oncology information system.
• You will work on developing and improving our mission‑critical event sourcing and micro‑service framework as well as installation and security aspects for the RayCare product.
• You will contribute to evolving the platform and ensuring it meets the high requirements on patient safety, robustness, performance, and availability.
• You will continuously contribute to good overall software design with the goal of achieving a highly structured large‑scale software product and discuss overall design within and between teams, valuing collaboration and your colleagues’ input.

Skills

Backend development

C#/.NET

SQL Server

Event-sourcing

CQRS/CQS

Domain-driven design

Client-server systems

Education

M.Sc. in Computer Science

Engineering Physics or equivalent

Tools

RabbitMQ

Job description

RaySearch Laboratories AB (publ) is seeking a skilled backend developer to join the RayCare Core team in Stockholm. You will contribute to designing and implementing a modern, robust software platform for our oncology information system.

You bring a strong background in C#/.NET, SQL Server, and domain-driven design, with experience in event-sourcing and CQRS. Collaboration with cross-functional teams is essential to deliver safe, scalable solutions.