Job Summary: We are seeking a PKI Cybersecurity Architect/Consultant to design and enhance security infrastructures, delivering technical consulting and audits across IT security components. Key Responsibilities: 1. Design of security-oriented Certificate and PKI architectures. 2. Support for security architectures, technical consulting, and audits. 3. Collaboration within a dynamic team of security architects and consultants. **WHAT IS TELEFÓNICA TECH?** Telefónica Tech is the leading digital transformation company within the Telefónica Group. We offer an extensive portfolio of integrated technological services and solutions in Cybersecurity, Cloud, IoT, Big Data, Artificial Intelligence, and Blockchain, supporting our clients throughout their digital transformation journey. We are a group of over 6,200 bold professionals working daily from various locations worldwide to achieve excellence through leadership grounded in transparency and teamwork. If you identify with our core values, we look forward to meeting you! www.telefonicatech.com **WHAT DO WE DO IN THE TEAM?** Within the **PKI** unit of Telefónica Tech’s **Architecture and Technical Consulting** area, we assist our clients in defining and improving their security infrastructures. We provide support for security architectures, as well as technical consulting and audits across the various IT security components employed by our clients. **WHAT WILL YOUR DAY-TO-DAY LOOK LIKE?** You will work within a department alongside other security architects and consultants, tackling diverse tasks such as designing Certificate and PKI architectures—always with a security focus—and developing and proposing solutions within our clients’ IT infrastructure. **AND FOR THIS, WE BELIEVE IT WOULD BE IDEAL IF YOU HAD…** **Experience** + Demonstrable experience of at least 3 years in cybersecurity roles equivalent to the one described. **Education** + Degree in Computer Science, Telecommunications, or equivalent qualification. **Technical Knowledge** + Administration and deployment of PKI (Microsoft CA, EJBCA, Nexus, etc.). + Signing and validation services (OCSP, CRL, TSA). + Cryptographic protocols: TLS, S/MIME, IPSec, SSH. + Cryptographic analysis capability and ability to resolve complex problems. + Continuous updating on advances in cybersecurity and quantum computing. + Symmetric, asymmetric, and hash cryptography. + ETSI EN 319 standards (signing and sealing). + X.509 certificate management. + NIST PQC process and candidate algorithms. + Experience with PQC libraries (liboqs, PQClean). + Integration of hybrid classical + post-quantum solutions. + HSMs and cryptographic security modules (FIPS 140-2/3, Common Criteria). **The following skills would align well with the team and project requirements:** + Strong project management skills. + Ability to resolve complex problems. + Attention to detail for fine-tuning configurations. + Strong communication skills to interact effectively with multiple technical teams. **LANGUAGES** + Required: fluent Spanish and English. **WHAT DO WE OFFER?** * Work-life balance measures and flexible working hours. * Continuous training and certifications. * Hybrid remote work model. * Attractive social benefits package. * Excellent, dynamic, and multidisciplinary working environment. * Volunteering programs. **\#WeAreDiverse \#WePromoteEquality** We firmly believe that diverse and inclusive teams are more innovative, transformative, and deliver better results. Therefore, we actively promote and guarantee inclusion for all individuals, regardless of gender, age, sexual orientation or identity, culture, disability, or any other condition. We want to meet you!