Talk Talk Business

Presales Engineer

Location: London, EC2A 1AH (Hybrid working)

Contract Type: Full Time


Presales Engineer

The role

In this new and exciting role of Presales Engineer, you’ll be the primary presales technical interface between customers and the TalkTalk Business Wholesale organisation for new Manged Security & SD-WAN services, where you’ll spend time understanding the customer requirements and collating them into design documentation to allow for seamless delivery and high levels of customer satisfaction.

Utilising your effective interpersonal skills and exhibiting a strong technical knowledge of Fortinet SD-WAN systems and architecture, you’ll be accountable for the solution sold being fit for purpose, functionally correct to the customer’s needs, and well understood by the wider business.

The team

Your Presales Engineer role (known as SD-WAN Consultant internally) is part of the TalkTalk Business Wholesale Presales Team, which acts as the design authority on all customer solutions and as a trusted advisor to our Wholesale partners.

The Presale Team provides expertise across all the Wholesale products, acting as consultants during the sales process and as educators to both TalkTalk staff and to our partners, with you bringing the Fortinet SD-WAN specialism and a high level of engagement to each opportunity.

Your responsibilities

  • You’ll create comprehensive, customer-facing, contractual design and statement of work documents that will be used by the Project Management, Delivery and Support teams throughout the lifecycle of the customer solution.

  • As part of post-sales Customer Information gathering, you’ll consult and assist with the completing of low-level configuration documents.

  • You’ll audit the firewall rule base and compare against customer intent and business justification, ahead of configuring with the least access.

  • Identifying all security appliances in scope and document, you’ll create a list of applications in use and confirm their relative importance to the customer and the application host location.

  • You’ll create an application priority map which lists the primary and secondary network paths in the event of an SLA breach or circuit failure if applicable.

  • Through investigation, you’ll confirm antivirus protection requirements for all inbound and outbound data, such as web and mail.

  • You’ll verify web filtering policies, remote access requirements, the network resource access requirements of all workgroups and UTM service requirements.

To be successful in this role


  • Presales Engineer, Presales Consultant, Presales Specialist or similar, with experience in SD-WAN and/or Managed Security and Certified to NSE4 or equivalent.

  • Broad understanding of the Fortinet product set and the ability to support internal Product teams in expanding and improving on the product.

  • Confident and outgoing with strong communication and influencing skills, with the ability to provide education for Sales and Technical colleagues through seminars, blogs and documentation.

  • A self-sufficient team player, with a great eye for detail, along with prioritisation, presentation and time-management skills.

  • Translating high-level customer needs and wants into a technically literate design document, through to being accountable for the success of solutions designed for customers, acting as their advocate in the Technical Sign-Off process.

  • Ability to build long-term relationships with both internal and external customers across different cultures.


  • High-level knowledge of LAN architecture, Public/Private Cloud Vendors and technologies, and co-location services and components.

  • Broad knowledge of WAN connectivity and subsequent access types, such as IA, MPLS, xdSL, FTTC/ FTTP, EOFTTP, and Ethernet.

Travel Requirements:

  • Travel within the UK will be required.

If this Presales Engineer sounds like you, please apply and we will be in touch soon!

As a recognised Top 50 Inclusive Employer in the UK, we know that diversity means success and innovation. We want our workplace to reflect the communities and customer we serve. Being inclusive is part of our DNA; we are all 100% human, and we create a culture where you can truly be yourself.

We’re also not your usual 9-5. We are a dynamic workplace and we want to talk to you about how you like to work.


  • My Wellbeing

    We want you to feel good at work — and not just because you’re doing great things for our customers. We run lots of wellbeing initiatives throughout the year.

  • My Products

    We offer all of our people free TalkTalk Fibre, TV and Phone (you’ll be helping us make them what they are, so it’s only fair that you get to enjoy them).

  • My Flexibility

    We all lead different lives and like to work differently, so whether it's working from home or starting and finishing your day later, we’ll give you the flexibility you need to do your best work.

  • My Benefits

    Think company pension scheme, private medical insurance, income protection and life assurance, plus all sorts of other benefits designed to make your life easier.

Talk Talk Business

Presales Engineer

Location: London, EC2A 1AH

Contract Type: Full Time