Founding Sales Engineer
High-Growth Cyber Security Startup
đź“Ť Location: United Kingdom (Remote)
đź’° Compensation: ÂŁ80,000 - ÂŁ85,000 Base, + Bonus (Uncapped) + Strong Equity
We’re hiring a Founding Sales Engineer to join a rapidly growing cybersecurity organisation and play a critical role in how customers evaluate, adopt, and succeed with a modern security platform. This role sits at the intersection of sales, engineering, and security strategy, supporting complex buying journeys across cloud-first and application-driven security environments.
You’ll partner closely with the Sales Leader, CEO and Engineering to guide prospects through technical discovery, demonstrations, and proof-of-value engagements. This is a strong opportunity for a security-minded technologist who enjoys customer interaction, technical storytelling, and influencing security outcomes at scale.
The Role
As a Sales Engineer, you will be the trusted technical advisor throughout the sales cycle, supporting mid-market and enterprise customers evaluating cloud and application security solutions. You’ll lead technical conversations, demonstrate real-world value, and help security and engineering teams understand how the platform fits into their architecture, workflows, and risk models. You’ll also contribute to refining technical messaging, demo strategy, and feedback loops as the business continues to scale.
Own the technical close
* Run deep technical discovery: customer environment, workflows, tooling, constraints, success criteria.
* Design and deliver tailored demos aligned to the customer’s problem and technical reality.
* Lead workshops (security + engineering) to validate fit and map value to customer process.
* Drive Technical Close outcomes and document them cleanly (customer confirms “technically approved / no blockers” OR POC success criteria met OR feasibility validated).
Run POCs that win
* Define POC plan, scope, and measurable success criteria.
* Coordinate with customer stakeholders (security, platform, dev leads) to unblock access and integrations.
* Turn POCs into proof, not experiments: crisp outcomes, quantified value, clean story for the AE to close.
Be the “credibility layer” in complex security deals
* Handle architecture, integration, and deployment conversations with confidence.
* Address security posture questions (data handling, deployment models, access patterns, compliance context) with clarity and honesty.
* Translate differentiators into customer language: prioritization, reachability/context, ownership, operational workflow impact.
Earn and own the customer trust from pre to post sale
* Keep CRM hygiene tight: next steps, risks, decision-makers, technical close artifacts.
* Build reusable demo assets, reference architectures, and POC templates.
* Feed product reality back to engineering: friction points, missing integrations, messaging that resonates.
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