At a Glance
- Tasks: Design and enhance enterprise networks and voice solutions in a dynamic financial services environment.
- Company: Leading financial services firm in London with a focus on innovation.
- Benefits: Attractive salary, comprehensive benefits, and opportunities for professional growth.
- Other info: Collaborative culture with a focus on career development and continuous learning.
- Why this job: Join a team that values cutting-edge technology and impactful projects in finance.
- Qualifications: Hands-on experience with enterprise networks and voice technologies required.
Location: London, United Kingdom
Industry: Financial Services
Salary: £90,000 per annum
Role overview
We are seeking a Network and Voice Engineer to design, support and enhance resilient enterprise networks and unified communications within a regulated financial services environment. You will ensure high availability, performance, security and service quality across LAN/WAN, data centre connectivity, cloud networking and voice platforms, working closely with infrastructure, security and service management teams.
Key responsibilities
- Design, implement and maintain routing and switching, including VLANs, STP, QoS, OSPF/BGP and high-availability patterns.
- Support WAN and remote connectivity (MPLS/SD-WAN, VPN, IPSec/SSL), optimising performance and resilience.
- Administer network security controls such as firewalls, NAC (e.g., 802.1X), segmentation and secure network access.
- Engineer voice and unified communications solutions (SIP, VoIP, SBCs, call routing, dial plans, IVR), ensuring call quality and reliability.
- Manage incident, problem and change processes, including root cause analysis, post-incident reviews and preventative improvements.
- Monitor and troubleshoot using tooling (e.g., SNMP/NetFlow, Wireshark), producing clear documentation and runbooks.
- Collaborate on DR/BCP testing, capacity planning, and platform lifecycle/patching aligned to risk and compliance requirements.
- Contribute to automation and configuration management where appropriate (e.g., scripting, templates, infrastructure as code).
Required skills and experience
- Strong hands-on experience supporting enterprise networks in a high-availability, low-latency environment.
- Expertise with Cisco and/or Juniper routing and switching; solid understanding of TCP/IP, DNS, DHCP and network services.
- Proven experience with voice technologies: SIP, RTP, codecs, QoS for voice, and enterprise telephony/UC platforms.
- Experience with firewalls and network security principles; familiarity with IDS/IPS and secure access patterns.
- Exposure to cloud networking (Azure/AWS), including VNET/VPC, routing, VPN/ExpressRoute/Direct Connect concepts.
- Strong troubleshooting capability and ability to communicate clearly with technical and non-technical stakeholders.
- Experience working in regulated environments (e.g., financial services), with awareness of audit, change control and risk management.
Qualifications
- Relevant certifications such as CCNP (Enterprise/Collaboration) or JNCIP; equivalent experience considered.
- ITIL knowledge or experience working within ITIL-aligned service management.
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Network and Voice Engineer employer: Source Technology Limited
Source Technology Limited is an exceptional employer that fosters a collaborative and innovative work culture, making it an ideal place for professionals looking to thrive in the tech industry. With a strong emphasis on employee growth and development, team members are encouraged to enhance their skills through continuous learning opportunities while working on cutting-edge cloud technologies. Located in the United Kingdom, the company offers a dynamic environment where creativity and technical expertise are valued, ensuring that employees can make a meaningful impact in their roles.
