Network and Security Sysops Engineer

Hargreaves Lansdown PLC; West of England; Hybrid; GBP 65,000 - 85,000; Full time

Benefits offered by this job

Discretionary bonus

25 days holiday

Hybrid working

Pension scheme

Private medical insurance

Health care cash plans

Wellbeing support

Job summary

Hargreaves Lansdown PLC in Bristol seeks a Network Engineer to own operation and security of HL's enterprise network. You’ll manage incidents, changes, patches and documentation, with hands-on work on Aruba Wi‑Fi, Zscaler ZIA/ZPA and Check Point Firewalls.

Join a collaborative team, engage across Service Desk, Cyber Security and Cloud teams, and drive improvements to availability, resilience and performance in a hybrid working environment.

Qualifications

• Experience as a Network Engineer, Network Security Engineer or Infrastructure Engineer.
• Hands-on experience supporting Aruba Wi‑Fi environments.
• Hands-on experience with Zscaler ZIA and ZPA.
• Hands-on experience with Check Point Firewalls.
• Experience in Incident, Problem and Change Management processes.
• Patching, firmware updates and upgrades of network and security components.
• Strong networking fundamentals.
• Excellent troubleshooting and analytical skills.
• Experience with network monitoring and diagnostics.

Responsibilities

• Own incidents from investigation to resolution with clear communication and documentation.
• Perform RCA as part of Problem Management.
• Plan, raise and implement changes via Change Management.
• Deliver regular patching, firmware updates and software upgrades across network infrastructure.
• Review security advisories and apply required patches and remediation.
• Maintain and upgrade HPE Aruba wireless infrastructure, troubleshoot wireless issues.
• Administer Zscaler ZIA and ZPA, including policy changes and connectivity troubleshooting.
• Administer Check Point Firewalls, including policies and NAT configurations.
• Maintain accurate network diagrams and documentation.
• Collaborate with Service Desk, Cyber Security, Systems Operations, Cloud and Applications teams for end-to-end solutions.
• Support continual service improvement to boost availability and security.

Skills

Aruba Wi‑Fi

Zscaler ZIA

Zscaler ZPA

Check Point Firewalls

Incident Management

Problem Management

Change Management

Network Troubleshooting

Patch Management

Networking Fundamentals

Tools

VMware NSX

F5 LTM

Cisco Nexus

Job description

About the role

Our Technology teams play a central role in keeping HL's technology services secure, resilient and available for our clients and colleagues. As part of the Network Engineering team, you will be responsible for the operation, support and continual improvement of our enterprise network. Working as part of a collaborative engineering team, you will take ownership of network and security incidents, problems, changes and service requests, ensuring issues are investigated thoroughly and resolved within agreed service levels. You will have hands‑on responsibility for HPE Aruba Wi‑Fi, Zscaler ZIA and ZPA, and Check Point Firewalls, as well as supporting the ongoing patching, upgrades and maintenance of these critical platforms.

What you’ll be doing

• Taking ownership of incidents from initial investigation through to resolution, ensuring appropriate communication and documentation throughout.
• Investigating recurring and complex issues and performing Root Cause Analysis (RCA) as part of the Problem Management process.
• Planning, raising and implementing network changes through the organisation's formal Change Management process.
• Planning and delivering regular patching, firmware updates and software upgrades across network infrastructure.
• Reviewing vendor security advisories and identifying required patches, upgrades and vulnerability remediation activities.
• Supporting the maintenance and upgrade of HPE Aruba wireless infrastructure, including troubleshooting wireless connectivity, authentication, performance and availability issues.
• Supporting and administering Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA), including policy changes, application access, authentication and connectivity troubleshooting.
• Supporting and administering Check Point Firewalls, including firewall policies, rules, NAT, objects, logging and troubleshooting.
• Maintaining accurate technical documentation, network diagrams, configuration records and operational procedures.
• Working collaboratively with Service Desk, Cyber Security, Systems Operations, Cloud and Application teams to deliver effective end‑to‑end solutions.
• Supporting continual service improvement initiatives to increase network availability, security and performance.
• Ensuring network and security platforms remain appropriately patched, supported and aligned with security and operational standards.

About you

• Proven experience working as a Network Engineer, Network Security Engineer or Infrastructure Engineer.
• Strong hands‑on experience supporting HPE Aruba Wi‑Fi environments.
• Strong hands‑on experience with Zscaler ZIA and ZPA.
• Strong hands‑on experience with Check Point Firewalls.
• Experience working within Incident, Problem and Change Management processes.
• Practical experience of network and security patching, firmware updates and upgrades.
• Strong understanding of networking fundamentals.
• Excellent troubleshooting and analytical skills, with the ability to investigate complex technical issues through to root cause.
• Experience using network monitoring, logging and diagnostic tools.
• Ability to work effectively under pressure, particularly during major incidents.
• Excellent interpersonal, organisation and communication skills.
• Strong understanding of security principles and the importance of maintaining secure and resilient network infrastructure.
• Relevant industry certifications in areas such as Aruba and Zscaler, Check Point.
• Nice to have: Experience with Cisco Nexus switching.
• Experience with VMware NSX.
• Experience with F5 LTM.

Interview process

2 stage interview process – initial call | competency based & scenario based questions.

Working Schedule

This role is based in Bristol head office, BS2 0PS. This role is permanent, full time, 37.5 hours per week, Monday to Friday. We have returned to the office 2 days a week.

Why us?

Here at HL, we’re the UK’s number 1 investment platform for private investors, based in Bristol. For more than 40 years we’ve helped investors save time, tax and money on their investments. To achieve our mission, we believe we have a workplace like no other, with constant learning, dynamic teams, and a great ethos. We're steered by core values that promote service, quality, innovation, and opportunity in everything we do.

What's on offer?

• Discretionary annual bonus* and annual pay review.
• 25 days* holiday plus bank holidays and 1-day additional Christmas closure.
• Option to purchase an additional 5 days holiday**.
• Flexible working options available, including hybrid working.
• Enhanced parental leave.
• Pension scheme up to 11% employer contribution.
• Income Protection and Life insurance (4 x salary core level of cover).
• Private medical insurance*.
• Health care cash plans – including optical, dental, and outpatient care.
• Health screening programme.
• Help@hand – confidential support including mental health counselling and remote GP.
• Wellhub – unlimited access to fitness providers and wellness coach sessions.
• Variety of travel to work schemes with bike storage and shower facilities.
• Inhouse barista and deli serving subsidised coffee and sandwiches.
• Two paid volunteering days per year * dependant on role level.
• Hargreaves Lansdown is an inclusive employer that values diversity in its workforce. We encourage applications from all individuals without regard to race, religion, gender, sexual orientation, national origin, disability or age.
• This role may also be available on a flexible working or part time basis – please ask the Recruitment & Onboarding team for more information.
• Please note, we are unable to provide employment sponsorship to candidates.
• Hargreaves Lansdown is the UK's number one platform for private investors. Our purpose is to empower people to save and invest with confidence, and today, we are trusted with more than £120 billion by over 1.7 million clients. We are based in the heart of Bristol now with over 2,000 colleagues. We believe we have a workplace like no other, with constant learning, dynamic teams and a great ethos. We're steered by our core values that promote service, quality, innovation, and opportunity in everything we do.