Network Security Engineer

ClearRoute; Greater London; Hybrid; GBP 70,000 - 110,000; Full time

Benefits offered by this job

Hybrid working

Home office budget

Profit share

Private healthcare

Employee assistance program

Job summary

ClearRoute is seeking a Network Security Engineer to own firewall policy management and security operations across client estates, using AlgoSec as the central toolset. You’ll partner with engineering and governance teams to translate complex requirements into auditable controls that meet regulatory standards.

In this hands-on role, you will optimize firewall rules across large, multi-vendor environments, perform recertification exercises, and develop automation to reduce manual work while

Qualifications

• Hands-on experience administering the AlgoSec Security Management Suite (Firewall Analyser, FireFlow, ObjectFlow, AppViz).
• Experience automating firewall policy management, risk analysis, and compliance reporting with AlgoSec.
• Strong understanding of application connectivity mapping and traffic flow analysis.

Responsibilities

• Own firewall policy management and network security operations for client estate using AlgoSec.
• Review and optimise firewall rule bases, run recertification exercises, build automation to reduce manual work.
• Translate security requirements into auditable controls for regulatory scrutiny.
• Engage with technical and executive stakeholders to balance security, resilience and business needs.
• Support security automation and governance across infrastructure, cloud, and operations.

Skills

AlgoSec

Firewall management

Policy optimisation

Security governance

Stakeholder management

Automation scripting

Tools

Palo Alto Networks

Fortinet

Cisco ASA / Firepower

Check Point

AlgoSec Security Management Suite

Ansible

Terraform

PowerShell

Python

APIs

Job description

About Us:

ClearRoute is an engineering consultancy bridging Quality Engineering, Cloud Platforms and Developer Experience. We help enterprises reliably bring high-impact digital products to market faster, cheaper, and safer, working with technology leaders facing complex business challenges.

We take as much pride in our people, culture and work-life balance as we do in making better software. We’re not just making better software. We’re making the making of software better. Collaborative, entrepreneurial and dedicated to problem solving, we bring the step change our customer need to sustain innovation. Our values challenge us to do the best we can for ClearRoute, our customers and most importantly our team. This is an opportunity for you to build the organisation from the ground up, use your voice to drive change and help transform organisations and problem domains.

Role:

ClearRoute is looking for a Network Security Engineer to take ownership of firewall policy management and network security operations across our client estate, with AlgoSec at the centre of the toolset. You'll be the go-to specialist for administering the AlgoSec Security Management Suite, using it to automate policy governance, risk analysis, and compliance reporting across large, multi-vendor firewall environments.

This is a hands‑on engineering role. You'll work directly within regulated, enterprise‑scale environments, reviewing and optimising firewall rule bases, running recertification exercises, and building the automation that takes manual, error‑prone policy work off engineering teams' plates. You'll sit at the intersection of security engineering, operations, and governance, translating firewall and network security requirements into practical, auditable controls that hold up under regulatory scrutiny.

Alongside the technical delivery, you'll be a trusted voice with both technical and executive stakeholders identifying where security posture, operational resilience, and business need are in tension, and helping clients navigate that trade‑off with clear, well‑reasoned recommendations.

Required Experience:

AlgoSec & Security Policy Management

• Hands‑on experience administering and supporting the AlgoSec Security Management Suite, including: Firewall Analyser, FireFlow, ObjectFlow, AppViz.

• Experience utilising AlgoSec to automate firewall policy management, risk analysis, access recertification, change governance, and compliance reporting.

• Strong understanding of application connectivity mapping, traffic flow analysis, and security policy optimisation.

Firewall & Network Security Technologies

• Extensive experience managing large‑scale, multi‑vendor firewall environments, including: Palo Alto Networks, Fortinet, Cisco ASA / Firepower, Check Point.

• Strong understanding of firewall architecture, policy administration, NAT, VPN technologies, segmentation, and micro‑segmentation.

• Experience performing firewall rule reviews, recertification exercises, policy optimisation, and risk reduction initiatives.

• Knowledge of network access controls, intrusion prevention systems (IPS), intrusion detection systems (IDS), DDoS protection, and secure web gateway technologies.

Network Security Operations

• Strong operational experience supporting enterprise network security environments.

• Experience managing security incidents, firewall requests, policy exceptions, and operational support within regulated organisations.

• Understanding of firewall compliance management, governance processes, audit requirements, and regulatory controls.

• Experience working within ITIL‑aligned Incident, Problem, Change, and Service Management frameworks.

Security Automation & Engineering

• Experience automating network security processes, including; Firewall rule lifecycle management, Policy validation, Compliance reporting, Security control enforcement, Operational workflows.

• Proficiency in PowerShell, Python, Bash, and API‑based integrations to support automation objectives.

• Experience with automation platforms and configuration management tools such as Ansible, Terraform, Chef, or equivalent solutions.

Additional Professional Competencies

• Strong stakeholder management and relationship‑building skills across technical and executive audiences.

• Ability to influence and drive security improvements across infrastructure, cloud, engineering, and operational teams.

• Strong analytical approach to risk identification, remediation, and operational optimisation.

• Excellent written and verbal communication skills with the ability to present complex technical issues in a clear and concise manner.

• Demonstrated ability to balance security, operational resilience, regulatory obligations, and business requirements.

Additional Desirable Skills & Experience

• Experience implementing enterprise firewall governance programmes using AlgoSec or equivalent policy management platforms.

• Experience with Zero Trust Network Architecture (ZTNA), SASE, and Security Service Edge (SSE) technologies.

• Experience within large‑scale financial services, banking, or other highly regulated environments.

• Knowledge of regulatory frameworks including PCI‑DSS, ISO27001, NIST Cyber Security Framework, CIS Controls, and relevant financial industry regulations.

• Experience supporting network security transformation, cloud migration, and hybrid networking programmes.

• Familiarity with software‑defined networking (SDN), network segmentation strategies, and modern secure connectivity solutions.

Working at ClearRoute

We have grown from six founders to 200+ people across five countries in three years, and what sets us apart isn't the pace, it's how we grow.

• Real flexibility, in practice. We trust you to perform at your best and still have a life outside of work, with genuine hybrid working, a home office budget, an open feedback culture where your voice shapes decisions, and time off when life needs it (birthday included).

• When ClearRoute wins, you win. We offer profit share so success is shared, meaningful recognition for great work, and benefits that look after you and your family, including private healthcare, competitive salary benchmarking, and a confidential employee assistance program covering counselling, mental health support, and financial wellbeing.

• A community you'll genuinely want to be part of. Interest based communities like running and book clubs, Women in Tech group, monthly socials, and cross regional events bring people together across the company. An inclusive, collaborative culture where you don't need to conform to succeed, where people support one another and feel comfortable being themselves.

• Where meaningful work meets real growth. You will tackle complex, real world problems at the forefront of platform engineering, AI, security, and scalable systems. Your growth is supported by learning budgets, Udemy access, a clear career framework, internal mobility, and thought leadership opportunities that take your impact beyond ClearRoute.

At ClearRoute, we believe diverse perspectives lead to better outcomes, and inclusion creates the conditions for everyone to thrive. We are proud to have built a family friendly working environment and have many employees who have caring responsibilities alongside work. We welcome applications from people who require flexibility and will be happy to discuss needs on an individual basis.