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Cisilion Ltd
Network Transformation Consultant - SD-WAN & SASE

Network Transformation Consultant - SD-WAN & SASE

On site

City, United kingdom

Freelance

09-10-2025

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Skills

Communication Firewalls Networking Architecture Project Management Agile Analytics

Job Specifications

Our client is seeking an experienced Network Consultant to lead and support the transformation of their Legacy MPLS network into a modern, agile, and secure hybrid Internet-based/private underlay powered by Palo Alto Networks SD-WAN and SASE technologies. This role is critical to ensuring seamless migration, optimal performance, and robust security across their global network infrastructure. This role is hybrid and you would be needed twice a week into their London City office.
Key Responsibilities
Assessment & Planning
Evaluate the current MPLS architecture and identify transformation opportunities.
Design a scalable Internet-based underlay network aligned with business and technical requirements.
Develop migration strategies and phased rollout plans for SD-WAN and SASE deployment.
Implementation & Integration
Configure and deploy Palo Alto Prisma SD-WAN edge devices and cloud controllers.
Integrate SASE components including secure web gateway (SWG), cloud access security broker (CASB), ZTNA, and Firewall-as-a-service.
Ensure interoperability with existing infrastructure, including Firewalls, Routers, and cloud services.
Security & Performance Optimization
Apply best practices for secure Internet breakout, segmentation, and traffic steering.
Monitor and optimize network performance using Palo Alto's analytics and visibility tools.
Implement policy-based routing and application-aware traffic management.
Collaboration & Documentation
Work closely with internal IT teams, vendors, and stakeholders to ensure alignment and smooth execution.
Provide detailed documentation of network designs, configurations, and operational procedures.
Train internal staff on new technologies and operational workflows.
Qualifications & Skills
Proven experience in network transformation projects, especially MPLS to SD-WAN migrations.
Deep understanding of Palo Alto Networks Prisma SD-WAN and SASE architecture.
Strong knowledge of IP routing, BGP, VPNs, QoS, and cloud networking.
Familiarity with security frameworks and zero trust principles.
Excellent troubleshooting, communication, and project management skills.
Must have relevant Palo Alto Professional/Specialist Certifications.

About the Company

Combining market-leading tech with world-class service, we go above and beyond expectations to ensure our clients are ready for a digital future. We believe in the value of building long-term partnerships that deliver against our client's business objectives through world-class consultancy, delivery, and managed services. Our brand ethos is built on a foundation of trust, excellence and agility - driving us to deliver exceptional IT services and solutions through a collaborative partnership with our clients. Know more