Location: London / Hybrid
Employment Type: Full Time
Close Date: 11 Sept 2026
About us
Arxion has developed the world’s most advanced hyper-secure, ultra-reliable communications platform. Uniquely, it intelligently orchestrates multiple independent communications networks into a single resilient communications fabric, creating an uninterrupted, secure path for mission-critical data to reach its destination.
Operations don’t stop because technology fails, they stop because information stops moving.
Arxion is defining the next generation of critical communications.
Sales Engineer
As a Sales Engineer at Arxion, you are the technical authority throughout the customer engagement process, translating complex operational requirements into secure, resilient communications solutions.
Working alongside the commercial team, you engage with customers to understand their operational environment, identify communications challenges and demonstrate how Arxion's platform delivers secure, uninterrupted communications when conventional systems cannot.
You combine technical expertise with strong customer engagement skills, supporting everything from initial discovery meetings through to demonstrations, proof-of-concepts and solution design.
Key Responsibilities
Work closely with Account Directors throughout the sales lifecycle, providing technical expertise and solution guidance.
Engage directly with customers to understand operational workflows, communications requirements and mission-critical challenges.
Design tailored Arxion solutions that meet customer security, resilience and operational objectives.
Deliver compelling technical demonstrations, workshops and executive presentations.
Lead proof-of-concept deployments, validating capability against customer use cases and success criteria.
Produce high-quality technical proposals, solution architectures and responses to RFPs and tenders.
Explain complex networking, security and communications concepts to both technical specialists and senior decision-makers.
Support customer technical evaluations, interoperability assessments and integration planning.
Provide feedback to Product Management and Engineering to ensure customer requirements continue to shape platform development.
Support strategic partners and resellers with technical enablement and solution training.
Represent Arxion at customer demonstrations, industry events and international exhibitions.
What Success Looks Like
A successful Sales Engineer builds trust by combining deep technical knowledge with a practical understanding of operational environments. They are equally comfortable discussing network architecture with IT specialists, resilience strategies with operational teams, and business outcomes with senior executives.
They help customers understand not just what Arxion does, but why uninterrupted, secure communications are essential to mission success.
Their ability to simplify complexity, solve challenging problems and demonstrate tangible operational value is critical to winning new business and building long-term customer relationships.
Essential Skills & Experience
Proven experience in a Sales Engineer, Solutions Engineer, Technical Pre-Sales or similar customer-facing technical role.
Strong understanding of enterprise communications and network infrastructure.
Knowledge of secure communications, cybersecurity principles and encrypted networking technologies.
Experience designing and presenting technical solutions to customers, from operational users through to executive stakeholders.
Ability to translate complex technical concepts into clear business and operational benefits.
Experience delivering technical demonstrations, workshops and proof-of-concept deployments.
Excellent presentation and communication skills, with confidence engaging both technical and non-technical audiences.
Strong problem-solving skills with the ability to understand customer challenges and develop practical, innovative solutions.
Experience producing high-quality technical documentation, solution designs and responses to tenders or RFPs.
Ability to work collaboratively with Sales, Product Management, Engineering and Delivery teams.
Willingness to travel internationally to support customer engagements, demonstrations, deployments and industry events.
Self-motivated, adaptable and comfortable working in a fast-paced, growing technology business.
Full driving licence and ability to obtain appropriate security clearances where required.
Desirable Skills & Experience
Experience within mission-critical communications, public safety, defence, government, critical national infrastructure, transport, utilities, mining or emergency services.
Understanding of TCP/IP, routing, VPNs, VLANs, firewalls, QoS, wireless technologies, and Linux-based systems, with the ability to troubleshoot and validate complex multi-site deployments.
Knowledge of radio communications, LTE/5G, satellite communications or hybrid communications networks.
Experience with secure mobility, tactical communications or resilient communications platforms.
Understanding of cloud technologies, virtualisation and containerised applications.
Familiarity with networking technologies including TCP/IP, VPNs, VLANs, firewalls, routing, switching, Quality of Service (QoS), wireless technologies and Linux-based systems.
Experience supporting channel partners, distributors or international reseller networks.
Experience responding to government or defence procurement frameworks and competitive tenders.
Previous experience working in an international environment with customers across multiple regions.
Spanish language skills (spoken and written) would be highly desirable to support customer engagements across Latin America.
Additional languages, particularly French or Arabic, would also be advantageous.
Relevant industry certifications (such as Cisco, Microsoft, AWS, CompTIA Security+, CISSP or similar) would be beneficial.
How to Apply
Contact recruitment@arxion.com with a CV and Cover Letter.
