Senior Network Architect

TNS Inc.; Sheffield; On-site; GBP 103,000 - 133,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Life insurance

Paid holidays

401K plan

Job summary

TNS Inc. is seeking a senior Network Architect to design, document, and deploy services across global MPLS/SD-WAN networks within a MSP context. You will contribute to automation initiatives and work with pre-sales and product teams to create scalable, robust solutions.

You will lead third-level support, vendor evaluations, and develop lab tests and training for operations. A strong background in cloud, IP multicast, and advanced routing is required.

Qualifications

• Experience with architecture and provisioning of MPLS/SD-WAN based environments.
• Hands-on design and configuration of Fortinet FortiGate devices, especially in SD-WAN.
• Experience with network automation tools and DevOps practices (Terraform, Ansible, JSON, Nautobot, vendor tools).
• Proficient in IPSec design, configuration, operation and troubleshooting.
• Experience in cloud-based architectures in AWS/Azure/GCP.
• Proficient in IP Multicast design, configuration, operation and troubleshooting.
• Strong routing knowledge: BGP/OSPF/ISIS/EIGRP/PIM/BFD.
• Experience with NAT, VRRP/HSRP features.
• Ability to document and maintain comprehensive designs.
• Strong debugging and vendor evaluation capabilities.

Responsibilities

• Design and test new technologies, features, and solutions with repeatable results for the Implementations team.
• Collaborate with Pre-Sales Engineers and Product Marketing to translate requirements into scalable solutions.
• Evaluate platforms with vendors for integration into TNS’ product suite.
• Provide third-level support to NOC and Implementations teams.
• Develop detailed lab test plans, document procedures, and train operations staff.
• Interact with vendors to resolve problems and perform hands-on testing and troubleshooting.

Skills

MPLS/SD-WAN design

FortiGate config

Network automation

IPSec design

Cloud architectures

IP multicast

BGP/OSPF

Documentation

Vendor evaluation

Tools

Terraform

Ansible

JSON

Nautobot

Arista CloudVision

Cisco DNA Center

Git

Jenkins

Job description

An extraordinarily talented group of individuals work together every day to drive TNS' success, from both professional and personal perspectives. Come join the excellence! Overview As a senior member of the Network Architecture team, you are responsible for the design, documentation and deployment of services within a global Managed Service Provider IP/MPLS network. Primary focus is on designing solutions such as large-scale SD-WAN, IPSec and MPLS VPN, IP multicast solutions and across wired and wireless comms. The role comes at an exciting time for TNS as we integrate services into private- and public-cloud environments, with a focus on automation and orchestration of services and look to transform to a NetDevOps model, where this role will play a key part. The position requires technical expertise across multiple areas and functions – ability to work with pre-sales and internal teams on requirements gathering, creation of high‑level and detailed design specs, ability to work alongside development teams to automate configuration, delivery and support processes, and ownership of overall projects. Selected candidate will also work with strategic vendors for solution evaluation and customization and will provide third‑level Operations support for incident resolution, and leadership over critical operational maintenance works.

Responsibilities

• Design and test new technologies, features, and solutions and documenting the results so that they can be repeated by members of the Implementations team and supported by the Network Operations Center
• Work closely with Pre-Sales Engineers and Product Marketing to understand customer requirements and develop scalable, consistent and supportable technical solutions
• Work with existing and new vendors to evaluate platforms and solutions for integration in TNS’ product suite.
• Provide third-level support to TNS’ Network Operations Center staff, and Implementations teams
• Develop and document detailed lab test plans and reports, document procedures and new configurations, provide training for operations departments and other engineers, provide written troubleshooting, debugging, and problem detail to vendors.
• Interact with vendors to resolve problems and bugs, and perform hands‑on testing, configuration, and troubleshooting

Qualifications

Essential Skills

• Experience with architecture and provisioning of solutions within MPLS or SD‑WAN based environments
• Extensive hands‑on experience with the design and configuration of Fortinet FortiGate devices, particularly within SD‑WAN topologies
• Experience with network automation and orchestration tools and features and DevOps methodology (e.g. Terraform, Ansible, JSON, Nautobot, Vendor‑specific tools like Arista Cloudvision, Cisco DNA Center)
• Proficient in IPSec (including DMVPN and RRI) design, configuration, operation, and troubleshooting
• Experience in designing cloud‑based architectures in AWS/Azure/GCP
• Proficient in IP Multicast design, configuration, operation, and troubleshooting
• Experience in network design and implementation based on high‑level customer requirements
• Extensive TCP/IP and routing knowledge (BGP, OSPF, ISIS, EIGRP, PIM, BFD).
• Experience with Customer Edge features such as Network Address Translation, VRRP/HSRP
• Proven ability to create and maintain comprehensive documentation for all implemented solutions
• Expert‑level troubleshooting and debugging skills
• Experience in vendor product evaluation (hardware, software, service provider)
• Experience and technical understanding of broadband service deployments (xDSL, Cable).
• Ability to design, plan, and coordinate network maintenance and installation windows.
• Hardworking, focused, thorough, and punctual
• Ability to provide written and verbal presentations on technical topics to corporate peers and management
• Experience providing support for Tier1 and Tier2 environments
• Self‑motivated; able to work independently or within a team environment with minimum instruction from management
• Able to work flexible hours as required and provide on‑call support

Desirable Skills

• Fortinet, Cisco and/or Juniper certifications (NSE Level 4/5/6/7, CCIE/CCNP‑SP, JNCIE, JNCIP)
• Experience with AAA, Tacacs+, Radius, and CA/PKI
• Experience with Voice over IP, Dial Services (Async/PPP, ISDN), Wireless services (CDMA, EVDO, GPRS, EDGE, 802.11b/g/n), Server Load‑Balancing (F5)
• Data Center design and support (Cisco Nexus, Arista, Juniper)
• Experience with Server Load‑Balancing (F5, Netscaler, AWS ALB/SLB)
• Experience of GIT, Jenkins, and other DevOps tools and Agile working practices
• Creating and deploying CloudFormation templates.
• Automating using other scripting/automation languages such as Python, Ansible and vendor‑specific tools like Arista Cloudvision, Cisco DNA Center is beneficial
• Firewall configuration experience with PIX/ASA, IOS, or Netscreen/JunOS
• Designing, building and automating AWS/GCP/Azure architecture
• Designing, building and automating NSX‑V and/or NSX‑T networking
• Designing, building and automating OpenStack (Canonical or RedHat)
• UNIX/Linux Experience

For this role in the US, we anticipate paying $140,000k - $180,000K. This role is eligible for variable pay, issued as a monetary bonus or in another form. Any compensation range provided for a role is an estimate determined by available market data. The actual amount may be higher or lower than the range provided considering each candidate’s knowledge, skills, abilities, and geographic location.

TNS offers a competitive benefit package including medical and dental coverage, life insurance, paid holidays and vacations, and a 401K plan with company match.

TNS is an equal opportunity employer. TNS evaluates qualified applicants without regard to race, color, religion, gender, national origin, age, sexual orientation, gender identity or expression, protected veteran status, disability/handicap status or any other legally protected characteristic.

With employees based in 21 countries around the world, TNS is a leading global provider of data communication and interoperability services to diverse industries, such as retail, banking, payment processing, telecommunications and the financial markets. TNS’ services extend to over 60 countries and we deliver mission critical solutions to many Fortune 500 companies. TNS employees play a vital role in the delivery of our services and we recognize them as our most valuable asset. We are proud to offer competitive salaries and benefit packages, and due to the global nature of our business we can offer opportunities to relocate to different locations, if your personal circumstances change.