Hamilton Barnes

Network Automation Engineer - 12 Months - London - Hybrid The Network Operations team is responsible for our clients global network, covering office, data centre, and co-location. As such, it has a major impact on the optimisation or their company performance. Within the team there is a strong Infrastructure as Code philosophy and commitment to introducing the next generation of applications and distributed platforms to the business. Alongside core monitoring and support tasks, the team plays a critical role in many high-profile company projects, with team members responsible for delivering technical designs that are developed by the Network Engineering team across the estate. The opportunity also requires close interaction with Infrastructure, Datacentre and other Operations teams, giving broad exposure to a variety of enterprise products and technologies. The Role 3 out of 4 weeks you'll be working on a mix of projects. The other week it is tier 3 support tickets Troubleshooting network issues across different vendors (Cisco: IOS-XE, IOS-XR, NX-OS Arista: EOS) Providing resolutions to major incidents Investigating hardware and software problems and working with manufacturer support teams to resolve issues Reporting and troubleshooting network connectivity to third parties, and WAN connectivity outages and issues with our partners Monitoring performance across Data Centre infrastructure. Must Haves Holding a CCNP Experience with vendors such as Cisco and Arista Strong enterprise complex Routing & Switching Strong previous experience with BGP Proficient in creating and running network automation tools, with experience using Python preferable Previous Firewall experience (Palo Alto or Fortinet) Skilled in mentoring other team members, and committed to knowledge sharing across the team for skills development and collaboration Infrastructure as Code - Familiar with Ansible/Terraform/AWX for network automation Contract Length: 12 Months Day Rate: £600/day Inside IR35 On site req: Hybrid

Senior Network Engineer (Low Latency/Co-Location) - 6 Month Contract - Inside IR35 - London Office Contract Type: 6-Month Contract (Inside IR35) Rate: £600 per day (can be negotiable) Location: London (Soho) Role Overview Working closely with the Low Latency Co-Location Team Lead, the Senior Network Engineer will be responsible for the design, deployment, and support of high-performance network infrastructure within client data centre and exchange co-location environments. The role focuses on delivering low-latency routing and switching solutions across multiple exchanges and global infrastructure environments. You will operate within a complex, multi-vendor network environment and play a key role in implementing scalable, resilient connectivity solutions while adapting to evolving technology and procurement challenges. Key Responsibilities: Design, build, and maintain high-performance, low-latency network infrastructure within exchange and co-location environments. Implement routing and switching solutions across multi-vendor platforms, particularly Cisco and Arista. Support and evolve global WAN connectivity and cloud networking solutions. Configure and troubleshoot multicast network environments used for market data distribution. Deploy and support low-latency timing infrastructure, including GPS, PTP, NTP, and PPS systems. Install and maintain infrastructure within co-location facilities including rack-and-stack, cross-connects, and vendor coordination. Implement and operate packet capture, monitoring, and network analysis tools to troubleshoot performance and latency issues. What You Will Ideally Bring: Proven experience as a network engineer in complex, multi-vendor environments. Hands-on experience working in data centre or co-location environments. Experience supporting low-latency or performance-sensitive network infrastructure. Previous exposure to exchange or financial trading connectivity environments is advantageous. Strong hands-on experience with routing and switching technologies. Strong operational experience with Cisco and Arista networking platforms. Solid understanding of core networking protocols and concepts including: BGP, OSPF, VLANs, Spanning Tree (STP), QoS, Layer 2 and Layer 3 troubleshooting Experience configuring and supporting multicast networking. Familiarity with Fortinet Firewalls. Experience implementing network timing solutions (GPS, PTP, NTP, PPS).

Azure Logic App Specialist - 6 months - Remote - Outside IR35 We are seeking a dedicated Azure Logic App Specialist for a 6-month contract to work directly with a key customer. This role involves designing and developing a series of playbooks, providing expert-level support and development of Azure Logic Apps in a fully remote capacity. Key Responsibilities: Design, develop, and maintain Azure Logic Apps workflows and playbooks. Utilize connectors effectively to integrate various services within Logic Apps. Implement error handling, monitoring, and best practices to ensure resilient cloud integrations. Act as the primary subject matter expert (SME) on Azure Logic Apps for the customer. Collaborate closely with the customer to deliver tailored Logic App solutions. Provide continuous support and troubleshooting for Logic App implementations. What You Will Ideally Bring: Deep hands-on experience with Azure Logic Apps and related connectors. Strong understanding of workflow design, error handling, and monitoring within Logic Apps. Proven ability to deliver resilient and scalable cloud integration solutions. Experience acting as a subject matter expert and trusted advisor on Azure Logic Apps. Excellent communication skills and ability to work closely with customers remotely. Strong problem-solving and analytical abilities. Contract Details: Duration: 6 months Location: Remote Day Rate: Up to £500 per day (Outside IR35) Azure Logic App Specialist - 6 months - Remote - Outside IR35

Sentinel SME - 6 months - Remote - Outside IR35 We are seeking an experienced Microsoft Sentinel SME for a 6-month contract to work directly with a key customer. This role involves designing and implementing advanced security playbooks, providing expert-level guidance, and delivering robust security monitoring and response solutions using Microsoft Sentinel. Key Responsibilities: Design, configure, and optimize Microsoft Sentinel environments for effective security monitoring. Develop and maintain custom analytics rules, workbooks, and playbooks. Implement automation and orchestration of incident response using Sentinel and related tools. Act as the primary subject matter expert (SME) on Microsoft Sentinel for the customer. Collaborate with stakeholders to tailor Sentinel use cases to the customer's security requirements. Provide ongoing support, tuning, and troubleshooting of Sentinel implementations. Ensure best practices for threat detection, incident response, and monitoring are applied. What You Will Ideally Bring: Deep, hands-on experience with Microsoft Sentinel and Azure security services. Strong understanding of SIEM concepts, log ingestion, and security operations workflows. Proven ability to design and deliver scalable and resilient security monitoring solutions. Experience acting as a trusted advisor/SME for security operations and SIEM tools. Excellent communication skills with the ability to work closely with customers remotely. Strong problem-solving, analytical, and threat-hunting abilities. Contract Details: Duration: 6 months Location: Remote Day Rate: Up to £500 per day (Outside IR35) Sentinel SME - 6 months - Remote - Outside IR35

Service Desk Associate - 6 months - Crawley- Inside IR35 We are seeking a proactive and technically skilled Service Desk Associate for a 6-month onsite contract role based in Crawley. The ideal candidate will be the first point of contact for IT-related issues, providing timely and effective support to end users across the organization. Key Responsibilities: Handle service desk requests including answering calls, responding to emails, and managing ticket submissions Reset passwords and assist users in regaining access to systems Perform basic troubleshooting for minor software issues and hardware glitches Support configuration challenges and simple setup problems Respond to user inquiries via phone, email, chat, or ticketing systems Log and track IT incidents and service requests accurately What You Will Ideally Bring: Solid understanding of IT infrastructure and common support tools Prior experience in a Service Desk, Helpdesk, or Technical Support role Technical proficiency at L1.5 level Excellent verbal and written communication skills Contract Details: Duration: 6 months (View for Extension) Day Rate: Up to £135 per day (Inside IR35) Location: Crawley Start Date: ASAP Service Desk Associate - 6 months - Crawley- Inside IR35