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Network Security Engineer
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Network Security Engineer
Salary: £45,000 (dependent on experience)
On-Call Allowance
Location: Stevenage
Type: Full Time, Permanent
About the Opportunity
An established and highly regarded network and cybersecurity services provider is seeking a Network & Security Engineer to join its growing Professional Services team.
This role offers the opportunity to work on a diverse range of enterprise networking and security projects across the UK and Europe while collaborating with experienced industry professionals. Projects include enterprise firewall deployments, Secure SD-WAN solutions, switching, wireless networking, cloud networking, and cybersecurity technologies.
The Role
This is a hands-on, third-line engineering position within a Professional Services environment. You will lead the technical delivery of complex customer projects from discovery and planning through to design, implementation, migration, testing, and handover.
The role has a strong focus on Fortinet technologies, including FortiGate, FortiManager, FortiAnalyzer, Secure SD-WAN, and associated networking and security solutions.
In addition to project delivery, you will act as a senior technical authority, providing guidance to colleagues, reviewing project designs, supporting engineering best practice, and ensuring technical quality across customer engagements. This is a technical leadership role rather than a people management position.
The role offers a hybrid working model, combining office-based work, remote working, and occasional travel to customer sites across the UK.
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Key Responsibilities
- Lead the technical delivery of enterprise and strategic customer projects, including complex multi-site implementations and migrations.
- Design, deploy, and migrate Fortinet solutions with a focus on FortiGate, FortiManager, FortiAnalyzer, and Secure SD-WAN.
- Produce and review low-level designs, implementation plans, test plans, technical documentation, and handover materials.
- Facilitate technical discovery workshops, customer design reviews, and implementation planning sessions.
- Provide technical assurance, identify risks and dependencies, and develop mitigation and rollback strategies.
- Act as the escalation point for complex implementation and migration issues.
- Troubleshoot firewalls, routing, switching, VPNs, wireless technologies, and cloud connectivity.
- Mentor and support engineers through peer reviews, coaching, and knowledge sharing.
- Develop technical standards, templates, reference architectures, and automation best practices.
- Support pre-sales activities through technical scoping, validation, and effort estimation.
- Build trusted relationships with customers, partners, and technology vendors.
- Complete testing and customer acceptance activities before operational handover.
Required Experience & Skills
- Significant experience delivering complex network and security projects within an MSP, consultancy, systems integrator, or enterprise environment.
- Strong hands-on experience designing, deploying, and troubleshooting FortiGate firewalls.
- Experience with FortiManager policy and configuration management.
- Good understanding of FortiAnalyzer logging, monitoring, and reporting.
- Strong networking knowledge including routing, switching, TCP/IP, VLANs, dynamic routing protocols, IPsec VPNs, high availability, and security principles.
- Experience delivering Secure SD-WAN solutions, ideally across multi-site environments.
- Excellent troubleshooting and problem-solving skills in complex production environments.
- Proven ability to create clear, accurate customer-facing technical documentation.
- Strong communication skills with the confidence to lead technical workshops and stakeholder discussions.
- Experience mentoring engineers and driving technical excellence within a team.
- Strong organisational skills, ownership mindset, and commercial awareness.
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What's on Offer
- Opportunity to work on enterprise-level networking and cybersecurity projects.
- Access to a highly experienced Professional Services team.
- Fully funded technical training and certifications.
- Clear career progression framework.
- Competitive salary package.
- Hybrid working model (3 days per week in the office).
- Pension scheme.
- 25 days annual leave plus bank holidays.
- Employee wellbeing programme.
- Free onsite parking.
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