Senior Security Software Engineer (Cryptography and Threat Modeling)

We are seeking a Senior Security Software Engineer specializing in Cryptography and Threat Modeling to drive cryptographic inventory initiatives and support FIPS 140-3 compliance across products. This role involves close collaboration with Security and product engineering teams to facilitate threat modeling workshops and deliver comprehensive security documentation.

Responsibilities

• Drive the creation of a crypto inventory using IBM QSE and agentic validation
• Review findings and issues related to FIPS 140-3 compliance
• Define, coordinate and track mitigation plans with engineering teams
• Facilitate threat modeling workshops for cloud applications
• Produce clear and actionable threat modeling reports
• Contribute to broader Secure Development and Operations Lifecycle (SDOL) activities
• Deliver a complete crypto inventory including FIPS 140-3 compliance reports
• Track progress on cryptographic mitigation plans in collaboration with engineering teams
• Prepare handover documentation and support knowledge transfer to the Security Team

Requirements

• 3+ years of hands-on experience in software security with end-to-end implementation of security initiatives
• Expertise in FIPS 140-3 compliance and cryptographic inventory management
• Capability to work independently and take ownership of security initiatives with minimal supervision
• Skills in driving topics to completion within complex security projects
• Proficiency in documentation, communication and stakeholder management
• Background in facilitating threat modeling workshops and producing security reports
• Upper-Intermediate English language proficiency (B2+)

Nice to have

• Familiarity with IBM QSE
• Background in cryptography
• Capability to apply agentic AI in hands-on projects
• Proficiency in using Jira for task and project tracking
• Understanding of security requirements in highly regulated environments such as FedRAMP