The Client

Our client is a leading global investment management firm operating a multi-strategy platform that blends cutting-edge technology with deep fundamental and quantitative research. With a collaborative global footprint spanning London, New York, and Asia, the firm manages capital across multiple asset classes, supported by a world-class infrastructure and proprietary technology stack.

Renowned for its high-performance engineering culture, the organisation empowers technologists to design, build, and operate systems that directly underpin trading and investment decision-making. As trading volumes, data analytics, and cloud connectivity continue to scale, the firm is expanding its core network engineering function to build the next generation of ultra-low-latency, secure, and globally consistent network architecture.

This is a key hire within a highly skilled infrastructure team supporting the firm’s ambitious technology roadmap.

What You’ll Get

• Competitive base salary with performance-related bonus
• Private healthcare and pension contributions
• Exposure to a high-calibre, global trading and technology environment
• Opportunities for professional development and advanced certifications
• A collaborative, high-trust culture that values engineering excellence and innovation

What You’ll Do

As a Senior Network Engineer, you’ll play a critical role in owning, maintaining, and evolving the firm’s global data network infrastructure across data centres, offices, and cloud environments.

You will work closely with trading, infrastructure, security, and cloud teams to deliver resilient, high-performance network solutions that directly support trading operations.

Key responsibilities include:

• Owning and supporting the global enterprise and data centre network infrastructure
• Designing, implementing, and optimising Cisco ACI fabric–based network architectures
• Managing and securing perimeter and internal networks using Juniper SRX firewalls
• Designing and operating AWS Direct Connect and hybrid cloud connectivity (including Transit Gateways)
• Leading complex infrastructure projects across on-prem and cloud environments
• Partnering with internal teams and external vendors to troubleshoot and resolve complex network issues
• Performing proactive monitoring, capacity planning, performance tuning, and resilience testing
• Driving automation, standardisation, and continuous improvement across the network estate

What You’ll Need

Essential / Must-Have Skills:

• Minimum 5 years’ experience supporting enterprise or large-scale network environments
• Hands-on, production experience with Cisco ACI Fabric (design, implementation, and operations)
• Strong expertise with Juniper SRX firewalls in complex, security-sensitive environments
• Proven experience designing and operating AWS Direct Connect and hybrid cloud networking
• Deep understanding of core networking technologies including BGP, OSPF, HSRP, spanning tree, VPNs, and dot1x
• Cisco CCNP (or equivalent) certification

Desirable Experience:

• Experience in financial services, trading, or low-latency environments
• Cisco 9500/9300 series switches and enterprise routing platforms
• Cisco ISE and network security integration
• Infrastructure-as-Code and automation (Terraform or similar)
• Experience working in globally distributed, high-availability environments

Personal Attributes

• Strong analytical and troubleshooting skills
• Clear communicator, comfortable working with both technical and non-technical stakeholders
• Proactive, ownership-driven mindset with the ability to work independently in a fast-paced environment
• Comfortable operating in a high-performance, high-expectation culture

Interested?

Please apply directly to confidentially discuss this opportunity and the broader network and infrastructure roadmap.