Technical Designer Network

Job Description Overview We are seeking a skilled Network Engineer with deep expertise in network and automation, Infrastructure‑as‑Code (IaC), and modern cloud‑centric networking. The ideal candidate will be responsible for designing, deploying, and managing scalable, secure, and automated network infrastructures across hybrid and multi‑cloud environments. This role requires a strong engineering mindset, a passion for automation, and the ability to transform traditional network operations into fully automated, policy‑driven architectures. Your role Network Architecture & Engineering Design, implement, and maintain enterprise‑grade network solutions across data centres, cloud environments, and global office locations. Develop scalable network architectures incorporating SD‑WAN, Zero Trust, segmentation, and cloud‑native connectivity patterns. Lead troubleshooting and optimisation efforts for high‑availability, mission‑critical network services. Automation & Infrastructure‑as‑Code (IaC) Build and maintain automated network deployments using tools such as Bicep, Terraform, Ansible, or Python‑based automation frameworks. Define and enforce IaC standards to ensure consistent, compliant, and repeatable network provisioning. Develop and maintain reusable automation modules, templates, and pipelines to support continuous delivery of network services. Cloud & Security Integration Engineer secure cloud connectivity patterns using Azure networking, firewalls, load balancers, NSGs, Application Gateways, and VPN/ExpressRoute. Collaborate with security teams to embed ZTNA, SASE, and policy‑driven segmentation into the network fabric. Assist in designing cloud‑ready network topologies with automated guardrails and compliance checks. Operational Excellence Provide advanced 3rd/4th‑line support for complex network issues. Implement proactive alerting, monitoring, and performance‑tuning across the network estate. Maintain detailed documentation, runbooks, and architectural artefacts to support operational teams. About you Strong expertise in enterprise networking: routing, switching, firewalls. Proven experience with IaC tools (Terraform, Bicep, Ansible) and automation frameworks (Python, PowerShell, REST APIs). Deep understanding of cloud networking concepts in Azure and OCI. Excellent analytical and problem‑solving abilities with strong documentation and communication skills Certifications such as CCNP, Azure Network Engineer, OCI Networking, DevNet Professional, or equivalent. Experience working within highly regulated or security‑sensitive environments. UK SC Cleared. Rewards & benefits Explore the rewards and benefits that help you thrive – at every stage of your life and your career. Enjoy competitive salaries, employee rewards and a brilliant range of benefits you can tailor to suit your own health, wellbeing, financial and lifestyle choices. Make the most of a myriad of opportunities for training and professional development to grow your skills and expertise. And combine our hybrid working culture and flexible holiday allowances to balance a great job and fulfilling personal life. Be rewarded. Find out more. About AtkinsRéalis We're AtkinsRéalis, a world-class engineering services and nuclear organization. We connect people, data and technology to transform the world's infrastructure and energy systems. Together, with our industry partners and clients, and our global team of consultants, designers, engineers and project managers, we can change the world. We're committed to leading our clients across our various end markets to engineer a better future for our planet and its people. Find out more. Additional information Security clearance This role may require security clearance and offers of employment will be dependent on obtaining the relevant level of clearance. If this is necessary, it will be discussed with you at interview. The vetting process is delivered by United Kingdom Security Vetting (UKSV) and may require candidates to provide proof of residency in the UK of 5 years or longer. If applying to this role please do not make reference to (in conversation) or include in your application or CV, details of any current or previously held security clearance. We are committed to creating a culture where everyone feels that they belong - a place where we can all be ourselves, thrive and develop to be the best we can be. So, we offer a range of family friendly, inclusive employment policies, flexible working arrangements and employee resource groups to support all employees. As an Equal Opportunities Employer, we value applications from all backgrounds, cultures and ability. As a Disability Confident Leader, we are committed to offering an interview to all applicants who have a disability and meet the essential criteria. If you would like to be considered under this commitment, please let us know at the application stage. Worker Type Employee Job Type Regular At AtkinsRéalis, we seek to hire individuals with diverse characteristics, backgrounds and perspectives. We strongly believe that world-class talent makes no distinctions based on gender, ethnic or national origin, sexual identity and orientation, age, religion or disability, but enriches itself through these differences. Created by the integration of long-standing organizations dating back to 1911, AtkinsRéalis is a world-class engineering services and nuclear company dedicated to engineering a better future for our planet and its people. We create sustainable solutions that connect people, data and technology to transform the world's infrastructure and energy systems. We deploy global capabilities locally to our clients and deliver unique end-to-end services across the whole life cycle of an asset including consulting, advisory & environmental services, intelligent networks & cybersecurity, design & engineering, procurement, project & construction management, operations & maintenance, decommissioning and capital. The breadth and depth of our capabilities are delivered to clients in strategic sectors such as Engineering Services, Nuclear and Capital. News and information are available at Atkinsrealis or follow us on LinkedIn.