About the role
RelyBlue is hiring a Product Security Specialist to drive threat modeling and product security risk assessment for our EU Cyber Resilience Act (CRA) and IEC 62443-4-1 / 4-2 program.

What you will do
• Build and maintain threat models for our products using MITRE EMB3D, STRIDE, or tools such as IriusRisk or Microsoft Threat Modeling Tool.
• Define the product security context: intended use, operating workplace, interfaces, assets and assumptions.
• Perform product cybersecurity risk assessments and track mitigations with engineering teams.
• Map product security requirements to IEC 62443-4-2 and CRA Annex I, and help prepare the supporting evidence.
• Turn findings into clear, actionable security requirements for developers and product owners.

What we are looking for
• 3+ years of experience in product security,



application security or OT/ICS security.
• Hands-on threat modeling experience with MITRE EMB3D, STRIDE, IriusRisk or Microsoft Threat Modeling Tool.
• Practical experience performing product security risk assessments.
• Working knowledge of IEC 62443-4-1 / 4-2 and the EU CRA.
• Understanding of embedded or connected product architectures.
• Clear written and spoken English.

Good to have
• VAPT experience on products, devices, web interfaces or APIs.
• Experience setting up or improving a secure SDLC.
• Experience drafting policies, guides and templates for IEC 62443-4-1 and CRA.
• ISA/IEC 62443 certification.

📌 Senior Product Security Specialist (Ahmedabad)
🏢 RelyBlue
📍 Ahmedabad