Senior Platform Security Engineer – AWS Backend & IAM

Sitoo Kassasystem; Stockholms kommun; On-site; SEK 600,000 - 800,000; Full time

Job summary

Sitoo Kassasystem in Stockholms län is seeking a Senior Software Engineer to join their innovative team. In this role, you will be responsible for designing and operating backend services that enhance platform security. You will work primarily with AWS and collaborate with engineering teams to ensure user-friendly yet robust systems. The ideal candidate has strong backend development experience, particularly with Node.js, and a deep understanding of security patterns. Join Sitoo and help shape the future of retail while working in a supportive and fun environment.

Qualifications

• Strong backend development experience with Node.js or similar.
• Proven experience building scalable cloud services (ideally on AWS).
• Deep interest in security patterns and best practices.
• Pragmatic ownership with a focus on long-term solutions.

Responsibilities

• Design and operate backend services for platform security.
• Build foundations for authentication and user lifecycle management.
• Scale permissions and roles across web and mobile applications.
• Develop security capabilities for global brand support.
• Ensure services have low latency and high availability.

Skills

Backend development experience with Node.js or similar

Experience building scalable cloud services on AWS

Understanding of Security Patterns like OAuth2, OIDC

Job description

Sitoo Kassasystem in Stockholms län is seeking a Senior Software Engineer to join their innovative team. In this role, you will be responsible for designing and operating backend services that enhance platform security. You will work primarily with AWS and collaborate with engineering teams to ensure user-friendly yet robust systems. The ideal candidate has strong backend development experience, particularly with Node.js, and a deep understanding of security patterns. Join Sitoo and help shape the future of retail while working in a supportive and fun environment.