Sr. Systems Engineer - Defense at Jobgether – UK

This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Sr. Systems Engineer – Defense in the United Kingdom.

This is a highly technical and customer-facing role focused on designing, demonstrating, and supporting advanced secure networking and cloud security solutions for enterprise and service provider environments. You will act as a trusted technical advisor to senior stakeholders, including CIOs and CISOs, helping organizations evaluate and adopt next-generation network security architectures. The role combines deep hands-on engineering expertise with pre-sales engagement, including workshops, proofs of concept, and solution validation. You will contribute directly to complex enterprise transformations in areas such as SASE, SD-WAN, and secure cloud connectivity. Operating in a fast-paced, innovation-driven environment, you will also collaborate closely with product and engineering teams to shape future offerings. This position is ideal for someone who thrives at the intersection of networking, security, and customer impact.

• Provide advanced pre-sales technical expertise and consultative support to enterprise customers and partners to drive solution adoption and revenue growth.
• Act as a trusted advisor to senior customer stakeholders (including CIOs and CISOs), supporting strategic network and security transformation initiatives.
• Lead technical workshops, product demonstrations, and proof-of-concept engagements to validate solution fit and performance.
• Design, test, and validate complex network architectures, including secure SD-WAN, SASE, and cloud security deployments.
• Respond to RFIs and RFPs with accurate, compelling, and technically robust solutions.
• Collaborate with product management and engineering teams to provide market feedback and influence product evolution.
• Develop technical documentation, whitepapers, and customer-facing content to support adoption and enablement.
• Maintain deep awareness of competitive technologies, market trends, and emerging security threats.

• Extensive experience in designing, operating, or supporting large-scale enterprise or service provider WAN/LAN environments.
• Strong knowledge of networking protocols and technologies including MPLS, VPNs, BGP, OSPF, QoS, NAT, and multicast.
• Solid understanding of security architectures including SASE, FWaaS, DLP, CASB, VPNs, proxies, and threat prevention technologies.
• Deep expertise in TCP/IP fundamentals and modern enterprise network architectures.
• Experience working with cloud platforms such as AWS, Azure, VMware, or OpenStack.
• Strong Linux administration skills, with additional scripting knowledge (Python or Shell) considered a plus.
• Ability to engage confidently with technical and executive-level stakeholders in a pre-sales or consulting capacity.
• Strong problem-solving mindset, with excellent communication and presentation skills.
• Based in the United Kingdom and authorized to work in the UK.

• Competitive salary with performance-based incentives and pre-IPO equity opportunities.
• Comprehensive health coverage including medical, dental, and vision insurance.
• Generous paid time off including vacation, holidays, and sick leave.
• Flexible remote and hybrid working options to support work-life balance.
• Access to continuous learning programs, certifications, and professional development resources.
• Recognition programs celebrating employee achievements and contributions.
• Inclusive, collaborative, and innovation-driven work culture.
• Generous parental leave and family support policies.
• Opportunity to work on cutting-edge technologies shaping global network security.