System Developer - Cybersecurity

RaySearch Laboratories; Stockholms kommun; On-site; SEK 650,000 - 900,000; Full time

Benefits offered by this job

In-house gym

Yoga

Regular after-work events

Lunch buffet

Fika every day

Rooftop terrace

Job summary

RaySearch Laboratories in Stockholm is seeking a System Developer to blend software development with a strong focus on security. You will embed security into the software lifecycle and help protect patients and healthcare professionals by ensuring secure product design and implementation.

You will work with development teams on security reviews, threat modeling, and compliance documentation. The role combines hands-on testing, secure coding guidelines, and training to promote secure development

Qualifications

• Strong understanding of software development practices and ability to read, analyze, and evaluate code for security and quality.
• Strong understanding of application security principles (e.g., OWASP Top 10, secure coding).
• Experience with threat modeling and risk analysis.
• Excellent ability to produce clear, structured security and compliance documentation.

Responsibilities

• Work with development teams to implement application security best practices throughout the SDLC.
• Participate in threat modeling (e.g., STRIDE) and risk assessments for new and existing applications.
• Assist in designing and implementing cybersecurity controls in products.
• Ensure compliance with cybersecurity frameworks and standards.
• Contribute to developer security awareness training and promote secure development practices.
• Perform secure code reviews, static/dynamic analysis, and penetration testing.
• Develop and maintain secure coding guidelines and security documentation.
• Support the preparation of cybersecurity documentation for regulated products (including FDA‑related frameworks).

Skills

Software development

Application security

Threat modeling

Security documentation

Tools

SonarQube

Burp Suite

Job description

We are looking for a System Developer who can blend software development expertise with a strong interest in security. In this role, you’ll contribute directly to RaySearch’s mission: advancing cancer treatment through innovative software. By ensuring that our products are designed and implemented securely, you help protect both patients and healthcare professionals and strengthen the reliability of the tools they depend on.

About The Role

As a System Developer within cybersecurity, you will play a key role in shaping our secure development practices. You will work closely with development teams to embed security into the software development lifecycle and ensure that our products follow industry-leading standards. The role combines hands‑on application security work—such as secure code reviews, threat modeling, and penetration testing—with knowledge sharing, training, and collaborative support to help teams make informed security decisions.

Your main tasks

• Work with development teams to implement application security best practices throughout the SDLC.
• Participate in threat modeling (e.g., STRIDE) and risk assessments for new and existing applications.
• Assist in designing and implementing cybersecurity controls in products.
• Ensure compliance with cybersecurity frameworks and standards.
• Contribute to developer security awareness training and promote secure development practices.
• Perform secure code reviews, static/dynamic analysis, and penetration testing.
• Develop and maintain secure coding guidelines and security documentation.
• Support the preparation of cybersecurity documentation for regulated products (including FDA‑related frameworks).

Your profile

You are a developer with a strong interest in cybersecurity and secure design. You enjoy sharing knowledge, collaborating with others, and supporting development teams in building secure solutions. You communicate clearly, work constructively across functions, and contribute to a culture where security is a natural part of everyday development.

Required Skills

• Strong understanding of software development practices and the ability to read, analyze, and evaluate code for security and quality aspects.
• Strong understanding of application security principles (e.g., OWASP Top 10, secure coding).
• Experience with threat modeling and risk analysis.
• Excellent ability to produce clear, structured security and compliance documentation.

It’s an advantage, but not required, if you also have experience of:

• Working in regulated environments (e.g., medical devices, embedded systems).
• Hands‑on experience with security testing tools (e.g., SonarQube, Burp Suite).
• Familiarity with FDA cybersecurity guidelines, the IEC 8100x series, or IEC 62443 for industrial/embedded systems.
• Integrating security into CI/CD pipelines (Azure DevOps or GitHub Actions).

Our Offer

At RaySearch, we offer a diverse and inclusive work environment, fostering openness, sincerity, and collaboration. Located in Hagastaden, Stockholm's Life Science Hub, our modern and creative workspace includes an in-house gym, yoga, and social activities like ping pong, table football, and regular after‑work events. Our bistro serves a fantastic lunch buffet, and we offer morning- and afternoon‑fika every day. Our rooftop terrace also provides a stunning 360‑degree view of Stockholm, enhancing the work experience. All of this comes attached with a competitive compensation and benefits package.

Application

Please apply to the position through the application form below. Selection and interviews will be ongoing. We do not accept applications by e‑mail.