Ingénieur(e) PKI – Cybersécurité - Ile-de-France

About the Position

Ingénieur(e) PKI – Cybersécurité - Ile-de-France

Courbevoie, IDF, France

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About Sopra Steria

Sopra Steria, a major player in Tech in Europe, with 51,000 employees in nearly 30 countries, is recognized for its consulting, digital services, and solutions activities. It helps its clients to lead their digital transformation and achieve concrete and sustainable benefits. The Group provides a global response to the competitiveness issues of large companies and organizations, combining in-depth knowledge of business sectors and technologies with a collaborative approach. Sopra Steria places the human at the heart of its action and commits to its clients to make the best use of digital to build a positive future. In 2025, the Group achieved a turnover of 5.6 billion euros.

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Your Future Work Environment

Within the Cyber Division, you will join the Protect Trust Value Center. You will evolve in an international environment and carry out strategic missions for our major clients.

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Roles and Missions

As a member of the Protect Trust team, this role is a responsible contributor in the areas of documentation, implementation, and operation of public key infrastructure (PKI), hardware security module (HSM) management, and key management system (KMS).

Your missions include:

• Providing operational support for cybersecurity services such as PKI, HSM, KMS
• Planning, executing, and managing the implementation of PKI/HSM/KMS technologies, ensuring all security, quality, and compliance requirements are met for supported applications
• Helping and developing expertise in key management fundamentals, applying this knowledge to host security modules and key management procedures
• Supporting the team in analyzing and evaluating encryption methods and algorithms for data in transit and at rest to protect confidential information
• Maintaining and following accurate and up-to-date procedural documentation within security policies
• Responding to incident management system tickets, which may require after-hours support

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What We Offer

• Telecommuting agreement to work remotely up to 2 days per week depending on your missions
• An attractive benefits package: health insurance, employee savings plan, meal vouchers, profit-sharing agreement, vacation and referral bonuses
• Multiple career opportunities: over 30 job families, as many pathways to imagine together
• Hundreds of training opportunities to develop your skills and grow within the Group
• Self-paced training platforms to prepare for certifications and support your personal development
• The opportunity to engage with our foundation or our partner "Vendredi"
• The chance to join the Tech'Me UP collective (training, conferences, market intelligence, and more...)

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Your Profile

Graduated from a computer engineering school or equivalent, you have at least 3 years of experience in the implementation/support of at least one of the following technologies/tools: PKI, KMS, HSM.

Practical knowledge in the following areas will be an asset:

• Training in cryptography
• Knowledge of the basics of security, data, and operating systems standards (Linux/Windows)
• Experience in troubleshooting system failures and knowledge of various file systems - NFS, SAN, etc.
• Knowledge of Cloud environments (AWS) and public key infrastructure (PKI) systems
• Knowledge of security practices in encryption and key management
• Knowledge of and ability to administer host security modules
• Solid knowledge of X.509 certificate lifecycle management
• Excellent technical writing skills and ability to organize and document processes and procedures
• Ability to present complex security topics to working groups and internal projects

Do you want to work on projects that combine technical challenges, new technologies, and innovation? Join a company that is committed to national and international communities to influence the development of cyber standards and standards. Sopra Steria is the first Affiliate Member of Mitre in Europe, and actively participates in OASIS and InterCERT.

An inclusive and committed employer, our company works every day to fight against all forms of discrimination and promote a respectful work environment. That's why, committed to diversity and inclusion, we encourage all applications and all profiles.

Learn more about our commitments