Systems Engineer III

Hours: 36

Salary: Competitive

Location: Welwyn Garden City AL7 1GA

United Kingdom

Apply by: 30/11/2023

Systems Engineer III

Welwyn Garden City AL7 1GA

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About the role

Job Summary


Systems Engineers work with knowledge of specific infrastructure specialism, and responsible for the entire development and support process for that specialism. You’re responsible for delivering quality solutions for colleagues and customers alike, with the impact ranging from saving time, effort or money to re-defining normal.

You have knowledge of latest technology trends, expertise & practical knowledge of the types of systems, infrastructure & applications used within Tesco.

You will be responsible for


  • Design and deliver network solutions using existing network infrastructure. Where new Network technologies are being introduced, implement them and establish best practice for their adoption. Resolve incidents and problems associated with the technical area of responsibility.
  • Contribute to the Technology Roadmap for Tesco Network Services.
  • Evaluate new tools and techniques being able to understand their value and impact.
  • Lead group design discussions on my area of expertise and be able to present with authority to a variety of audiences.
  • Collaborate with other technical teams to understand their requirements and assist them consuming Infrastructure in the most seamless way possible.
  • Keep my technical skills up to date and keep track of new technologies, understanding how they might benefit the Technology team and wider Tesco.
  • Introduce automation to all aspects of my day to day work.

You will need

  • Experience designing and deploying solutions for large, complex global organizations
  • Analytical and structured approach to design, process and advanced troubleshooting
  • Work with Architecture to produce and maintain high quality HLD/LLD and maintain standard documentation for area of responsibility.
  • Well organized self-starter who takes personal ownership and accountability at required levels of the work stream and project life cycles; willing to go the extra mile at every opportunity
  • Builds and maintains positive relationships within and across teams
  • Communicates effectively, able to deliver and present both written and verbal, designs, strategies and concepts clearly.
  • Take ownership, to keep up-to-date and embrace the latest industry technologies and associated supplier solutions.



Required Technology Skills


  • Experience with the design and configuration of Forescout CounterACT products and Network Access Control technologies
  • Experience with complex, larger scale network endpoint secure connectivity and access control that spans both wired and wireless access control.
  • Experience with 802.1X/NAC, DHCP, HTTPS, TCP, Netflow, Radius, etc. and access control policy development and management and device remediation
  • Experience with IOT and BYOD device access policy controls
  • Strong understanding of Routing, Switching, Wireless, and Network Security technologies
  • Extensive experience creating complex wireless designs.
  • Lead engineering efforts during Global Wireless upgrade and expansion initiatives
  • Adept in WLCs configuration, troubleshooting and installation specifically on Cisco, HPe/Aruba, Meraki or Juniper Mist.
  • Strong experience with both centralized and local Wireless LAN Controllers, WLAN technologies, network management, 802.11 b/g/n/ac standards.
  • Knowledge of NAC integration with WLAN’s


Desirable Technical Skills


  • Good to have knowledge of HTML/Linux Scripts, PKI.
  • Proficient with data migrations utilizing Python, Powershell & Microsoft Solutions
  • Knowledge of TCP/IP and enterprise network protocols (LDAP, DNS, SMTP, SNMP, DHCP, and authentication protocols)
  • Hands-on experience in both Windows and Linux, Mac OSX platforms with a solid understanding of networking principles and security best practices
  • Strong experience in network troubleshooting and configuration (tcpdump, Wireshark, etc.)
  • BGP, OSPF, RIP understanding would be an added advantage.
  • Hands-on experience with Cisco ISE good to have
  • Forescout certifications such as FSCE is ideal, optional



Educational Qualifications: Engineering / Science Graduate/Diploma

Years of Experience:  10+




What’s in it for you

We offer excellent benefits that help make Tesco a great place to work!  These include but are not limited to:

  • Annual bonus scheme
  • Holiday starting at 25 days plus a personal day (and bank holidays)
  • Great colleague discounts and deals, saving you money on everyday purchases, utility bills for the home and more
  • Retirement savings plan – save between 4% and 7.5% and Tesco will match your contribution
  • Buy as you earn and Save as you earn share schemes
  • Opportunities to get on – take advantage of our ongoing learning opportunities and award-winning training to help you achieve the career you want

About us

Our vision at Tesco is to become every customer’s favourite way to shop, whether they are at home or out on the move.  Our core purpose is “Serving our customers, communities and planet a little better every day”.  Serving means more than a transactional relationship with our customers.  It means acting as a responsible and sustainable business for all stakeholders, for the communities we are part of, and for the planet.

We are proud to have an inclusive culture at Tesco where everyone truly feels able to be themselves.  At Tesco, we not only celebrate diversity, but recognise the value and opportunity it brings.  We’re committed to creating a workplace where differences are valued, and make sure that all colleagues are given the same opportunities.  We’re a big business with diverse working patterns and many business areas which means that we can find something that works for you.  Everyone is welcome at Tesco.

We have recently announced that we are moving to a more blended working week – combining office and remote working.  Our offices continue to be where we connect, collaborate and innovate.  Talk to us about how this can work for you.

Note: Should you be successful in your application, your employment will be subject to and conditional upon you providing your bank account details on your agreed start date.

We’re proud to have been accredited Disability Confident Leader and we’re committed to providing a fully inclusive and accessible recruitment process. For further information on the accessibility support we can offer, please click here.

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