Senior Network and Security Engineer in London
Senior Network and Security Engineer

Senior Network and Security Engineer in London

London Full-Time 43200 - 72000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Design and maintain global network infrastructure, ensuring high performance and security.
  • Company: Join CMC Markets, a pioneering fintech company with a collaborative culture.
  • Benefits: Competitive salary, flexible working options, and opportunities for professional growth.
  • Why this job: Work with cutting-edge technology in a fast-paced, impactful environment.
  • Qualifications: Strong networking skills, CCNP certification, and experience with Cisco technologies.
  • Other info: Be part of a dynamic team driving innovation in financial trading.

The predicted salary is between 43200 - 72000 £ per year.

CMC Markets is looking for an experienced Senior Network & Security Engineer to join our Technology team. This role plays a key part in designing, building and supporting our global network infrastructure, ensuring high performance, resilience and security across on-premise and cloud environments. You will work across both project delivery and business-as-usual operations, supporting critical trading platforms in a fast-paced, regulated environment.

Key Responsibilities
  • Design, implement and maintain CMC Markets’ global LAN, WAN and cloud network infrastructure
  • Deliver network engineering and design for new initiatives, alongside ongoing BAU growth and optimisation
  • Monitor network performance, capacity and availability, providing proactive support and troubleshooting
  • Implement new network services in line with internal policies, standards and security requirements
  • Identify, advise on and remediate network and security risks
  • Maintain secure VPN connectivity with external partners, ensuring alignment with current best practices
  • Perform BAU changes and troubleshooting on Palo Alto and Cisco ASA firewalls
  • Lead investigation and resolution of network and security incidents
  • Collaborate closely with internal technology teams to resolve connectivity issues
  • Maintain accurate technical documentation and diagrams
  • Ensure all work is delivered in line with CMC Markets’ policies, procedures and compliance obligations
Skills & ExperienceEssential
  • Strong experience operating and troubleshooting Cisco ACI environments
  • Hands-on experience with multicast networking
  • CCNP-level networking knowledge or certification
  • Proven experience designing and building data centre and cloud networks
  • Solid knowledge of Cisco Catalyst and Nexus switch platforms
  • Excellent documentation, communication and stakeholder engagement skills
Desirable
  • Experience supporting Market Data network feeds
  • Exposure to SD-WAN technologies
  • Experience supporting low-latency production networks within trading or financial services environments
  • Experience with Cisco ASA and Meraki Wireless
  • Hands-on experience with Palo Alto firewalls

At CMC Markets, you’ll work with cutting-edge technology in a collaborative environment where reliability, security and performance are critical. If you’re passionate about networking and thrive in complex, high-availability environments, we’d love to hear from you.

CMC Markets is an equal opportunities employer and positively encourages applications from suitably qualified and eligible candidates regardless of gender, sexual orientation, marital or civil partner status, gender reassignment, race, colour, nationality, ethnic or national origin, religion or belief, disability or age.

CMC Markets is one of the world’s first ever fin-tech companies and was launched in 1989 to break down the barriers of financial trading and make trading accessible to everyone. Our mission is to use our award-winning, Next Generation trading platform and unparalleled client service to empower millions of people to have the best trading experience out there. Our clients can trade on thousands of instruments using the best technology, supported by sophisticated charting, competitive pricing and automated execution. We’re trusted by investors globally, but also by banks, brokers, funds and trading desks through our top-tier liquidity institutional offering, enabling these businesses to expand into new markets and increase revenue potential. We were recently listed on the FTSE250, and our business continues to go from strength to strength as we continue to invest in our technology and our people.

Senior Network and Security Engineer in London employer: CMC Markets

At CMC Markets, we pride ourselves on being a leading fintech employer that fosters a dynamic and inclusive work culture. Our London-based team enjoys access to cutting-edge technology, comprehensive training, and ample opportunities for professional growth, all while contributing to a mission that empowers millions in the trading space. Join us to be part of a collaborative environment where your expertise in network and security engineering will directly impact our global operations and client success.
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Contact Detail:

CMC Markets Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Network and Security Engineer in London

✨Tip Number 1

Network, network, network! Get out there and connect with professionals in the industry. Attend meetups, webinars, or even just grab a coffee with someone who works at CMC Markets. Building relationships can open doors that a CV just can't.

✨Tip Number 2

Show off your skills! If you’ve got a portfolio of projects or a GitHub account, make sure to highlight them during interviews. Demonstrating your hands-on experience with Cisco ACI or Palo Alto firewalls can really set you apart from the competition.

✨Tip Number 3

Prepare for technical interviews by brushing up on your troubleshooting skills. Be ready to discuss how you've tackled network issues in the past, especially in high-pressure environments like trading. We want to see how you think on your feet!

✨Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in joining our team at CMC Markets.

We think you need these skills to ace Senior Network and Security Engineer in London

Cisco ACI
Multicast Networking
CCNP-level Networking Knowledge or Certification
Data Centre Network Design
Cloud Network Design
Cisco Catalyst Switch Platforms
Cisco Nexus Switch Platforms
Documentation Skills
Communication Skills
Stakeholder Engagement Skills
Market Data Network Feeds Support
SD-WAN Technologies Exposure
Low-Latency Production Networks Experience
Cisco ASA Firewalls
Palo Alto Firewalls

Some tips for your application 🫡

Tailor Your CV: Make sure your CV is tailored to the Senior Network and Security Engineer role. Highlight your experience with Cisco ACI, multicast networking, and any relevant certifications like CCNP. We want to see how your skills match what we're looking for!

Showcase Your Projects: In your application, don’t just list your responsibilities; showcase specific projects where you designed or implemented network solutions. We love seeing real-world examples of your work that demonstrate your problem-solving skills and technical expertise.

Be Clear and Concise: When writing your cover letter, keep it clear and concise. Address how your experience aligns with our key responsibilities, especially around network performance and security. We appreciate straightforward communication that gets to the point!

Apply Through Our Website: We encourage you to apply through our website for a smoother process. It helps us keep track of applications and ensures you’re considered for the role. Plus, it’s super easy to do!

How to prepare for a job interview at CMC Markets

✨Know Your Tech Inside Out

Make sure you brush up on your knowledge of Cisco ACI environments and multicast networking. Be ready to discuss specific projects where you've designed or built data centre and cloud networks, as this will show your hands-on experience.

✨Showcase Your Problem-Solving Skills

Prepare examples of how you've tackled network performance issues or security incidents in the past. Highlight your troubleshooting process and any tools you used, especially with Palo Alto and Cisco ASA firewalls.

✨Communicate Clearly

Since excellent communication is key, practice explaining complex technical concepts in simple terms. This will help you engage with non-technical stakeholders during the interview, showcasing your ability to collaborate effectively.

✨Align with Company Values

Familiarise yourself with CMC Markets' mission and values. Be prepared to discuss how your passion for networking aligns with their commitment to reliability, security, and performance in a fast-paced environment.

Senior Network and Security Engineer in London
CMC Markets
Location: London
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  • Senior Network and Security Engineer in London

    London
    Full-Time
    43200 - 72000 £ / year (est.)
  • C

    CMC Markets

    500-1000
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