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TESTQ Technologies Limited

Network Architect

Hybrid

Edinburgh, United kingdom

Freelance

05-12-2025

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Skills

Communication Python Go PowerShell Network Security Firewalls Ansible Change Management Networking Architecture Network Architecture Azure AWS cloud platforms GCP Terraform

Job Specifications

Overview:

The Network Architect will be responsible for designing, integrating, and securing network environments required to support large-scale application migration initiatives. The role involves network architecture design, firewall configuration, integration discussions with cross-functional teams, and ensuring end-to-end connectivity for on-prem and cloud-based workloads.

Key Responsibilities:

Lead network architecture and integration discussions to define connectivity requirements for application migration projects.
Design and implement network topologies, routing strategies, and segmentation models to support new and existing application environments.
Perform and coordinate firewall (FW) changes, including rule creation, optimization, NAT, ACL updates, security policies, and migration of firewall policies.
Ensure secure and reliable network connectivity between on-premises data centers, cloud platforms, and third-party applications.
Work closely with application, cloud, and security teams to validate network requirements and ensure compatibility with migration workflows.
Troubleshoot network performance, latency, routing, DNS, load balancers, and connectivity issues affecting migrated applications.
Support end-to-end network readiness, including testing, packet tracing, and validation of communication paths prior to go-live.
Maintain documentation for network designs, IP schemas, firewall rule sets, and migration-related architecture changes.
Ensure compliance with network security best practices, including traffic segmentation, Zero Trust principles, and access control.
Participate in change management (CAB) to evaluate and implement network-related changes with minimal risk.

Required Skills & Experience:

Strong experience in network architecture, design, and operations in enterprise environments.
Hands-on expertise with firewalls (Palo Alto, Check Point, Fortinet, Cisco ASA, or similar).
Solid understanding of routing, switching, VPN, BGP, OSPF, MPLS, and network segmentation.
Experience supporting application migrations across data centers or cloud platforms (Azure, AWS, GCP preferred).
Strong knowledge of load balancers, proxy servers, DNS, DHCP, NAT, and IP addressing.
Ability to interpret and design network diagrams, HLD/LLD documentation, and security architectures.
Excellent troubleshooting and communication skills for working with cross-functional teams.

Preferred Qualifications:

Relevant certifications such as CCNP, CCIE, PCNSE, NSE, or AWS/Azure Network certifications.
Experience with cloud networking (Azure Virtual Network, ExpressRoute, AWS VPC, Transit Gateway, etc.).
Familiarity with automation tools (Ansible, Terraform, PowerShell, Python) for network configuration.

About the Company

TESTQ TECHNOLOGIES LIMITED is a global IT services and solutions company headquartered in the UK. Our offerings span various industry sectors with strong technical, domain and process expertise helping clients grow their businesses and decrease operational costs continuously in an ever-changing business environment. Know more