Jobbeschreibung
Why we need this role?
This role is critical to protecting both internal telecom infrastructure and customer-facing security services. It ensures the secure deployment and management of technologies across backbone, edge, and cloud environments, while supporting the delivery and integration of managed security solutions for customers. The role plays a key part in incident response, vulnerability management, and maintaining robust security standards. By collaborating across engineering, operations, and product teams, it helps embed security into every layer of the network and service lifecycle, ensuring resilience, compliance, and customer trust.
What you will do:
Security Engineering (Customer-Facing):
- Support deployment and integration of customer security products such as managed firewalls, SD-WAN, SASE platforms, and DDoS mitigation solutions.
- Perform configuration, troubleshooting, and tuning of security services in customer environments.
- Assist in onboarding, proof-of-concept testing, and support transitions to operations for customer security services.
- Work with solution architects to operationalize and maintain secure design patterns / templates.
Infrastructure Security (Internal):
- Deploy and manage security technologies across the telecom backbone, edge, and data centre infrastructure (e.g., firewalls, IDS/IPS, SIEM, PAM, NAC).
- Collaborate with network and systems teams to secure IP/MPLS transport, SDN platforms, automation tools, and cloud workloads.
- Monitor and analyse security events and alerts, responding to incidents and escalating as appropriate.
- Assist with vulnerability assessments, patch management validation, and configuration hardening.
- Document and maintain infrastructure security standards, configurations, and runbooks.
Support & Collaboration:
- Participate in security incident response, root cause analysis, and remediation efforts.
- Provide input on threat modelling, security testing, and design reviews for internal and external services.
- Collaborate with engineering, operations, product, and customer
What we're looking for?
Must haves:
- Experience in security engineering and/or network engineering
- Solid understanding of TCP/IP, routing, firewalls, VPN, and network segmentation principles.
- Hands-on experience with security tools such as firewalls (Fortinet, Palo Alto, etc.), SIEM/SOAR, IDS/IPS, EDR, or vulnerability scanners.
- Familiarity with Linux, scripting (Python, Bash), and infrastructure-as-code concepts.
- Knowledge of secure configuration standards (e.g., CIS benchmarks) and common protocols (e.g., BGP, DNS, SNMP).
- Experience supporting or delivering telecom or ISP infrastructure.
- Exposure to customer-facing security services or managed security environments.
- Familiarity with regulatory and industry standards (e.g., NIST, ISO 27001, UK TSA).
- Certifications such as Security+, GSEC, GCIA, or equivalent are a plus.
- Telecom or carrier experience strongly preferred
What We Offer You
Diversity and inclusion
- Inclusion and valuing diversity of thought and experience are at the heart of our culture here at Colt. From day one, you'll be encouraged to be yourself because we believe that's what helps our people to thrive. We welcome people with diverse backgrounds and experiences, regardless of their gender identity or expression, sexual orientation, race, religion, disability, neurodiversity, age, marital status, pregnancy status, or place of birth.
Most Recently We Have
- Signed the UN Women Empowerment Principles which guide our Gender Action Plan
- Trained 60 (and growing) Colties to be Mental Health First Aiders
- Please speak with a member of our recruitment team if you require adjustments to our recruitment process to support you.
Benefits
Our benefits support you through all parts of life, for both physical and mental health.
- Flexible working hours and the option to work from home.
- Extensive induction program with experienced mentors and buddies.
- Opportunities for further development and educational opportunities.
- Global Family Leave Policy.
- Employee Assistance Program.
- Internal inclusion & diversity employee networks..