Job Description

Job Title: Security Specialist

Position Summary:

We are seeking a highly skilled and versatile Security Specialist with a strong background in telecommunications and Operational Technology (OT) security. The ideal candidate will have deep expertise in security architecture, incident response (IR), digital forensics and incident response (DFIR), technical writing, and securing OT/ICS environments. This role requires a well-rounded professional who can design secure systems, lead cyber investigations, and clearly document complex security mechanisms.

Key Responsibilities:

Security Architecture

Design, evaluate, and enhance secure architectures across IT, OT, and telecom networks. Conduct threat modeling and risk assessments for telecom and OT infrastructure. Support the integration of IT and OT systems with a focus on secure design and segmentation. Collaborate with cross-functional teams to ensure security is embedded in all layers of telecom and industrial systems.

Incident Response (IR) & DFIR

Lead and coordinate response to security incidents affecting telecom or OT environments. Perform forensic investigations on compromised systems, including ICS/SCADA. Develop and maintain incident response plans and playbooks tailored for OT systems. Collaborate with SOC, NOC, and plant/factory operations teams during incident resolution.

Technical Documentation

Create and maintain comprehensive documentation including IR plans, architecture diagrams, SOPs, and forensic reports. Translate complex technical concepts into clear, accessible documentation. Ensure documentation supports internal compliance and external regulatory audits.

Required Qualifications:

Bachelor's degree in Cybersecurity, Computer Engineering, or a related field. 5+ years of experience in cybersecurity with a focus on telecom and OT environments.

Proven experience in:

o Security architecture and secure network design (including OT/ICS).


o Handling IR/DFIR cases in IT and OT systems.


o Writing technical documentation, policies, and procedures.

Preferred Certifications:

CISSP, GICSP, GCIA, GCFA, GICSP, GRID, or equivalent. Vendor-specific certifications in telecom or OT/ICS (e.g., Cisco, Siemens, ABB). Technical writing or ISO/IEC 62443 training is a plus.

Key Competencies:

Understanding of OT environments (ICS, SCADA, PLCs, DCS) and associated threats. Familiarity with telecom protocols (e.g., SS7, SIP, Diameter, 5G, LTE). Experience with forensic/IR tools (Volatility, FTK, ELK, Wireshark, MISP, etc.). Ability to work across both IT and OT security teams. * Strong documentation, communication, and stakeholder engagement skills.