Specialist Cybersecurity

Role Specialist - Certificate Management Operations About the Company Join AT T and reimagine the communications and technologies that connect the world Our Chief Security Office ensures that our assets are safeguarded through truthful transparency enforce accountability and master cybersecurity to stay ahead of threats Bring your bold ideas and fearless risk-taking to redefine connectivity and transform how the world shares stories and experiences that matter When you step into a career with AT T you won t just imagine the future-you ll create it About the Job We are seeking a highly skilled and detail-oriented Digital Certificate Management Operations Specialist to join our Cybersecurity team The ideal candidate will have deep functional and operational expertise in the Public Key Infrastructure PKI cryptography and certificate lifecycle management to ensure the secure issuance renewal revocation and overall management of digital certificates across the enterprise This role will collaborate with developers network engineers and security teams to maintain a robust and compliant certificate ecosystem that supports secure communications and data protection This role will have hands-on experience with relevant tools and compliance frameworks Experience Level 5 years Location Hyderabad Bengaluru Responsibilities Include Manage the full lifecycle of digital certificates including issuance renewal revocation and replacement Monitor certificate status and proactively address expirations to prevent service disruptions Troubleshoot and resolve certificate-related issues across multiple platforms and applications Automate certificate management processes using scripting languages and certificate management tools Maintain accurate documentation of certificate inventories configurations and operational procedures Collaborate closely with developers security teams network administrators and other stakeholders to ensure secure and compliant certificate deployments Ensure compliance with PKI best practices industry standards and regulatory requirements Participate in periodic reviews checks and respond to certificate management-related queries Stay current with emerging trends threats and technologies in digital certificate management Support incident response efforts related to certificate compromise or misuse Provide training and support to internal teams on certificate best practices Attention to detail is crucial Should be flexible to provide coverage in US morning hours Should be flexible with shifts and supporting on weekends Required skills Overall - At least 5 years of experience in performing Digital Certificate Management Operations including PKI Fundamentals Strong understanding of X 509 certificates Certificate Authorities CAs and Registration Authorities RAs Experience with certificate lifecycle management issuance renewal and revocation Knowledge of Certificate Revocation Lists CRLs and Online Certificate Status Protocol OCSP Experience leveraging automation for certificate lifecycle management using scripting tools like PowerShell and Python Cryptography Familiarity with symmetric and asymmetric encryption techniques Understanding of hashing algorithms such as SHA-2 and SHA-3 Experience with key management and secure key storage practices Operating Systems Proficient with Windows Server environments particularly Active Directory Certificate Services AD CS Working knowledge of Linux systems and open-source PKI tools like OpenSSL and EJBCA Networking Protocols Expertise in SSH TLS SSL HTTPS S MIME IPsec and VPNs Understanding of DNS LDAP and HTTP protocols as they relate to certificate distribution and validation Tools Technologies Hands-on experience with OpenSSL Keytool Certutil Familiarity with Microsoft AD CS KeyFactor Venafi HashiCorp Vault and EJBCA Experience managing Hardware Security Modules HSMs such as Thales and SafeNet Knowledge of ACME protocol for automated certificate issuance Proficient in automation leveraging scripting languages such as Java Python PowerShell and Bash Shell scripting Security Compliance Knowledge Deep understanding of PKI best practices and standards including NIST guidelines and RFC 5280 Proven ability to troubleshoot complex certificate-related issues across diverse platforms Strong documentation skills to support audit readiness and operational transparency Familiarity with compliance frameworks such as FIPS 140-2 GDPR and HIPAA Desirable skills Bachelor s or master s degree in computer science mathematics information systems engineering or cybersecurity Industry certifications such as CEH CISSP SANS and or other relevant certifications Ability to prioritize individual group work in a high-stress and time-bound environment Excellent communication problem-solving and analytical skills Ability to work independently and as part of a team Additional information if any Should be flexible to provide coverage in US morning hours Should be flexible with shifts and supporting on weekends Cybersecurity Weekly Hours 40 Time Type Regular Location IND AP Hyderabad Argus Bldg 4f 5f Sattva Knowledge City- Adm Argus Building Sattva Knowledge City It is the policy of AT T to provide equal employment opportunity EEO to all persons regardless of age color national origin citizenship status physical or mental disability race religion creed gender sex sexual orientation gender identity and or expression genetic information marital status status with regard to public assistance veteran status or any other characteristic protected by federal state or local law In addition AT T will provide reasonable accommodations for qualified individuals with disabilities AT T is a fair chance employer and does not initiate a background check until an offer is made