Network Architect at Telefonica Tech, London, £Competitive Rate (Outside IR35)

We are currently hiring for a Network Architect for an initial short term contract position (It`ll start as an initial 40 day contract however the duration is very likely to extend further)

The role can be carried out remotely. (Outside IR35)

In summary we are looking for the following:

• Network Consultant/Architect
• Must have NHS experience networking ie HSCN exposure
• Must have an understanding of MPLS

The role:

For our client, we are implementing a new Trust Integration Engine (TIE) to facilitate secure data exchange between various healthcare systems and partner Trusts.

We require an expert Networking Consultant to support the final stages of the project relating to the completion of configuration and execution of non-functional and connectivity testing.

Key Challenges and Requirements

The following sub-sections describe the challenges faced by the team and the areas where help is needed.

Network Connectivity and Routing

1. Resolve issues with inbound message failures to the new TIE PROD environment, particularly focusing on discrepancies between node connectivity and VIP accessibility.
2. Address challenges in testing outbound message routing from the TIE PROD environment, considering the limitations of testing from a VIP and the current Firewall rule configurations.
3. Implement and validate correct routing for MPLS, cross-connects, ensuring proper traffic flow between all relevant systems and networks.
4. Verify and optimise routing to various systems.

Ensure correct implementation of NAT

Firewall Configuration and Security

Support is required to:

1. Review and implement Firewall rules as specified in the Low-Level Design document, covering Prod:Prod, Test:Test, and Prod:Test scenarios.
2. Validate Firewall rules for both allowed and denied traffic, ensuring proper segmentation and security.
3. Implement and test specific rules for RDS access, SMTP email communication with Digital, and SMB file sharing between old and new TIE Servers.

Performance and High Availability

The KEMP load balancing solution in the bTT data centre is in use to support this project. As such, the team require assistance to:

1. Address issues with load balancing and VIP accessibility to ensure high availability and proper traffic distribution.
2. Implement and test failover scenarios between primary and secondary circuits, and between production and DR environments.

Documentation and Knowledge Transfer

During the course of the project and at the end as required, comprehensive documentation of all implemented solutions, including network diagrams, configuration details, and test results must be provided.