Principal Sales Engineer

Location: Remote (UK-based) – with travel to customer sites

Salary: circa £140k +20% bonus + car allowance + extensive benefits package (DV cleared)

Clearance Requirement: SC if willing to go through DV process

Our client is at the forefront of digital transformation, supporting the world’s most essential organisations through their most complex digital challenges. By providing visibility and insight at an unparalleled scale they help clients solve problems faster, secure what matters, and drive continuous innovation across their digital ecosystems.

We are now seeking a Principal Sales Engineer to support the growth of UK public sector accounts. This is a remote, client-facing role for a highly technical and experienced presales professional with a strong Government/Public Sector background and current DV clearance.

Key Requirements

Essential skills and experience:

15+ years’ experience in IT, with at least 10 years in presales, network engineering, or technical support with demonstrable success supporting UK Government or public sector clients

• Strong expertise in:
  • Cisco routing, switching, gateways, and applications
  • TCP/IP, SNMP, Netflow, VoIP
  • LAN/WAN topologies (MPLS, Frame Relay, ATM)
  • Security concepts and network infrastructure design
  • Network performance and fault/alert management

• Solid understanding of:
  • Operating systems – Linux, Windows
  • Cloud and virtualisation technologies – SDN/NFV, Public/Private Cloud
  • Performance tools – HP/OV, Tivoli, EMC SMARTS, ArcSight

• Relevant certifications – CCNP or CCIE or Juniper equivalent
• Formal presales training (e.g. Sandler, Siebel, Afterburner, Udemy)
• Excellent communication and presentation skills – verbal, written, and visual

Desirable qualifications:

• Degree in Computer Science, Software Engineering, or equivalent technical military training
• Knowledge of products such as Arbor, Radwhere, Riverbed, A10, ExtraHop
• Familiarity with security audits, RFP/RFI responses
• Exposure to security analytics tools and techniques, such as log analysis, anomaly detection, or traffic monitoring, with an interest in developing stronger skills.
• Understanding of full packet capture and analysis concepts, or hands-on experience with tools like Wireshark, Zeek, or similar platforms.
• Awareness of cybersecurity frameworks and best practices (e.g., NIST, ISO 27001) and how they apply to network assurance.

Role & Responsibilities

As Principal Sales Engineer, you will play a vital role in driving revenue by delivering technical presales support, demonstrating product value, and shaping best-fit solutions. Reporting to the Regional Sales Director, you will act as a trusted advisor for public sector clients and internal stakeholders.

Responsibilities include:

• Leading technical discovery and supporting the full sales cycle
• Creating and delivering high-impact demos and presentations
• Differentiating solutions from competitors using compelling value stories
• Acting as a technical expert across integrators, service providers, and Government
• Partnering with product and engineering to influence roadmaps and relay market feedback
• Contributing to technical documentation, RFPs, and whitepapers
• Mentoring Sales Engineers, attending client meetings alongside them
• Building strong customer relationships and identifying upsell opportunities
• Representing customer needs internally and advocating for technical alignment
• Participating in industry events, speaking engagements, and strategic initiatives

Additional Details

Remote Working: 

•  Muust be comfortable with regular travel for client meetings 3-4 days per week