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

Role Summary

Your future working environment

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

Your 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, Key Management System (KMS).

Requirements

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

• Working knowledge of the following areas will be an added advantage:
• You have completed cryptography training
• You know the basis of security standards, data and operating systems (Linux/Windows)

You have experience in troubleshooting systems and knowledge of various file systems - NFS, SAN, etc.

• You are familiar with Cloud environments (AWS) and Public Key Infrastructure (PKI) systems
• You are familiar with security practices regarding encryption and key management
• You are familiar with the practices and have skills in administering host security modules
• You have solid knowledge of X.509 certificate lifecycle management
• You have excellent technical writing skills and an ability to organize and document processes and procedures
• You have the ability to present complex security topics to internal working groups and projects

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

Benefits

What we offer you

• A teleworking agreement to telework up to 2 days per week depending on your missions.
• An interesting benefits package: mutual insurance, a CSE, restaurant vouchers, a profit-sharing agreement, vacation bonuses and co-optation.
• Multiple career opportunities: more than 30 job families, so many pathways to imagine together.
• Hundreds of training courses to develop your skills and evolve within the Group.
• Independent training platforms to prepare for your certifications and support your personal development.
• The possibility of getting involved with our foundation or our partner “Friday”.
• The opportunity to join the Tech'Me UP collective (training, conferences, monitoring, and much more...).
• An inclusive and committed employer, our company works every day to fight against all forms of discrimination and promote a respectful working environment. This is why, committed to diversity and diversity, we encourage all applications and all profiles.
• https: //www.soprasteria.fr/nous-connaitre/nos-engagements

About the Company

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, services and digital solutions activities. It helps its clients carry out their digital transformation and obtain concrete and lasting benefits. The Group provides a global response to the competitiveness challenges of large companies and organizations, by combining in-depth knowledge of sectors of activity and technologies with a collaborative approach. Sopra Steria places people at the heart of its action and is committed to its clients to make the most of digital technology to build a positive future. In 2025, the Group achieved a turnover of 5.6 billion euros.

• The world is how we shape it*
• Sopra Steria (SOP) is listed on Euronext Paris (Compartment A) - ISIN code: FR0000050809
• For more information, find us at www.soprasteria.com/fr
• *The world is as we make it

Sopra Steria's Cybersecurity Business Line is present in Europe with more than 2,500 experts - more than half of whom are in France - our mission is to provide trusted solutions and services to the most exposed public and private actors to ensure the resilience of their critical systems and protect their sensitive digital assets.

Beyond the strong European presence, the cybersecurity division is positioning itself and developing in North America (Toronto), as well as in Asia Pacific (Singapore).

We offer 3 areas of offering: Prevention, Protection & detection and response. These 3 areas work together to provide our customers with consistent information and decision-making capabilities informed by operational reality. This approach is based on our transversal methodology centered on Miter Att&ck.

Sopra Steria relies on proven and recognized sovereign capabilities to strengthen your resilience to cyberattacks and accelerate your digital transformation.

An end-to-end trusted solution

A “security by design” approach focused on business risks and transversal to the organization.

A commitment to the development of innovative sovereign solutions.

Each individual can have an impact on responding to these new cyber risk challenges. Everyone contributes both individually and collectively to securing our clients and society while maintaining personal and professional growth.

Your missions are as follows

You provide operational support for cybersecurity services such as PKI, HSM, KMS

You plan, execute and manage implementations of PKI/HSM/KMS technologies. You ensure that all security, quality and compliance requirements are met for supported applications.

You help and develop expertise in the fundamentals of key management. You apply this knowledge to host security modules and key management procedures.

• You support the team to help analyze and evaluate encryption methods and algorithms for data transmissions and data at rest to protect confidential information
• You maintain and follow accurate and up-to-date procedural documentation within the framework of security policies
• You respond to incident management system tickets. Support requires an after-hours call