Senior Software Security Engineer / PKI

Location: Issy-les-Moulineaux, France, with a flexible remote work policy

Company

LINAGORA develops open-source software and provides security expertise for businesses and public administrations facing critical incidents and complex infrastructure challenges.

What you will do

• Act as the primary security expert for diagnosing, resolving, and preventing critical client incidents.
• Design, implement, and maintain public key infrastructure for client environments.
• Develop and integrate encryption, authentication, and certificate-management solutions.
• Contribute modules and expertise to open-source security projects and communities.
• Guide engineers and advise clients on IT security and PKI best practices.
• Help evolve security solutions by anticipating threats and proposing improvements.

Requirements

• 10+ years of cybersecurity experience with substantial PKI expertise.
• Strong knowledge of cryptography, PKI management, TLS/SSL, X.509 certificates, network security, and application security.
• Experience developing and implementing robust security solutions for complex and critical environments.
• Significant contributions to open-source security projects and recognition within relevant communities.
• Strong Linux system administration and security-management skills, including Red Hat, CentOS, or Debian.
• Fluent spoken and written English for collaboration with international teams.

Nice to have

• Experience with OpenSSL, GnuPG, and security frameworks used in open-source environments.

Culture & Benefits

• Flexible remote work policy.
• Collaboration with an open-source security team focused on innovation.
• Close work with the OSSA Director and client organizations.
• Permanent employment contract (CDI).