We are looking for a Senior Network Design Engineer / Team Leader to provide technical leadership and deliver network architecture and telecommunications solutions across complex railway and safety-critical projects. The role will focus on the design and delivery of data networks supporting station systems, SCADA, signalling and backbone communications, working closely with customers, project teams, systems engineers and delivery partners. Key Responsibilities Lead the technical delivery of network architectures and designs across railway projects. Design and review LAN/WAN, industrial Ethernet, SCADA and station system networks, including CCTV, voice and passenger information systems. Produce network architecture documents, diagrams, IP addressing/subnetting plans, cable schedules, diversity plans and configurations. Develop secure network solutions, including firewalls, DMZs, IPsec, authentication and network security architectures. Gather customer requirements...

QA / Test Engineer READ THIS BEFORE YOU APPLY You will be testing Kafka-based streaming data pipelines at genuinely enormous scale, and you will be writing the test strategy for the whole programme from a blank page. There is nothing in place today. If that sounds like the job you have been waiting for rather than a job with a gap in it, keep reading. WHO THE CLIENT IS Our client is a UK-headquartered AI company building sovereign AI capability for defence and national security. They have been established for around a decade and are one of the country's leading builders of AI for high-risk, high-assurance environments. Their platform is an AI operating system built entirely in the UK, designed for settings where security, trust and full infrastructure control are non-negotiable. It deploys across cloud, edge, on-premise and fully air-gapped systems, and is already live inside UK Defence and national security missions. They closed a substantial Series A round...

Senior Network Engineer (Fortinet) Up to 470 per day (Umbrella) with Potential Flexibility for the Right Candidate Initial 6-Month Contract (Extension Highly Likely) Liverpool (Hybrid) Our client is seeking an experienced Senior Network Engineer to join their infrastructure team on an initial 6-month contract, with great potential for extensions. This is a hands-on engineering role focused on supporting, maintaining, troubleshooting and enhancing a complex enterprise network environment. The successful candidate will play a key role in ensuring the stability, security and performance of critical network infrastructure while supporting both operational and project-based activities. Location & Working Arrangements Liverpool based Hybrid working model with a minimum of 3 days per week onsite Monday to Friday Free onsite parking Occasional out-of-hours work to support planned changes, maintenance activities and major incidents Key...

Threat Modelling Engineer Location: London Working Pattern: 4 days onsite / 1 day remote Contract: Initial 6-month contract Rate: 400 - 500 per day Damia Group is supporting a leading organisation in the delivery of a high-profile Cyber Security programme and is looking for an experienced Senior Threat Modelling Engineer to join the team in London. You will play a key role in identifying and assessing security threats, defining appropriate mitigating controls, and helping to continuously improve the organisation's threat modelling capability. This is a hands-on position combining Threat Modelling, Cyber Security, Cloud Security and Python development , with responsibility for delivering high-quality threat models while also supporting and mentoring more junior members of the team. Key Responsibilities Conduct Threat Modelling using established and documented methodologies. Apply techniques including STRIDE, PASTA, Attack Trees and MITRE ATT&CK...