Lead Network Architect – Arista & Fortinet (Extranet Security)

London - UK

Monthly Salary: Not Disclosed

Posted on: Yesterday

Vacancies: 1 Vacancy

Job Summary

Join New Era Technology where People First is at the heart of everything we do. With a global team of over 3000 professionals were committed to creating a workplace where everyone feels valued empowered and inspired to grow. Our mission is to securely connect people places and information with end-to-end technology solutions at scale.

At New Era youll join a team-oriented culture that prioritizes your personal and professional development. Work alongside industry-certified experts access continuous training and enjoy competitive benefits. Guided by our core attributes putting people first embracing continuous learning and thriving through collaboration and inclusion we nurture our people to deliver exceptional customer service.

If you want to make an impact in a supportive growth-oriented environment New Era is the place for you. Apply today and help us shape the future of worktogether

SUMMARY: We are looking for a highly skilled Arista Lead with deep expertise in Arista Networks and Fortinet Firewalls to join our IT Infrastructure & Operations team. This senior leadership role is ideal for a professional with 710 years of enterprise networking experience who can architect implement and lead the migration from Cisco to Arista platforms while supervising and mentoring a team of network engineers.

PRIMARY DUTIES:

Lead the design implementation and optimization of Arista-based network infrastructures and Fortinet NGFW & SD-WAN solutions.
Architect Layer 2/3 topologies using Arista EOS Cloud Vision and spine-leaf architecture.
Configure manage and fine-tune Fortinet firewalls policies and HA deployments.
Supervise and mentor a team of network engineers ensuring quality project delivery.
Drive automation initiatives using Python Ansible and Fortinet APIs.
Collaborate with cybersecurity infrastructure and cloud application teams to ensure secure and scalable solutions.
Implement Zero Trust segmentation across Arista and Fortinet platforms.
Designed and governed secure extranet architectures using VRFs VLANs and VXLAN ensuring strict network segmentation and adherence to zero-trust security principles.
Led end-to-end onboarding of external partners (banks regulators institutional clients) including connectivity design secure access provisioning and validation of MFA and RBAC controls.
Managed network configurations through Arista CloudVision using configlets Studios and Change Control workflows ensuring controlled auditable and risk-free production deployments.
Implemented and enforced security policies including ACLs micro-segmentation and VRF isolation ensuring compliance with global regulatory frameworks such as GDPR SEC and FCA.
Monitored extranet environments using streaming telemetry and Network Data Lake proactively identifying anomalies managing incidents and performing root cause analysis.
Automated extranet provisioning and lifecycle management using Ansible Terraform and REST APIs improving deployment efficiency scalability and consistency.
Troubleshoot complex network and security events using Forti Manager and Forti Analyzer.

COMPENTENCY:

Expertise in BGP OSPF VXLAN EVPN.
Proficiency in Cisco IOS & NX-OS configuration and troubleshooting.
Strong knowledge of FortiOS rule base management threat mitigation HA deployment.
Automation with Python Ansible RESTful APIs.
Hybrid cloud integration experience (Azure AWS GCP).
Strong understanding of SDN architecture and micro-segmentation.

REQUIRED EDUCATION:

Mandatory: Arista Certified Engineering Expert (ACE Level 3).
Preferred: Cisco CCNP/CCIE or Juniper JNCIP/JNCIE.
Bonus: Fortinet NSE Level 4 or higher.

EXPERIENCE:

710 years in enterprise network engineering.
Minimum 5 years of hands-on experience with Arista Networks.
Minimum 5 years of senior-level experience with Fortinet Firewall technologies.
Proven leadership/supervisory experience managing network engineers.

QUALIFICATIONS:

Strategic thinker with a security-first mindset.
Strong leadership and mentoring abilities.
Detail-oriented adaptable and able to thrive in dynamic enterprise environments.
Passionate about innovation and network performance optimization.

WORK ENVIRONMENT: Onsite London England

EXPECTED HOURS OF WORK: 40 hours/ week; occasional weekends

TRAVEL: None

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