IT Security Engineer

We are seeking a highly skilled Senior Infrastructure Engineer to join our team and help distribute the existing workload. The successful candidate will work closely with other team members while acting as a Subject Matter Expert (SME) in one or more areas. This role requires a strong technical foundation combined with a problem-solving mindset and the ability to work independently without micromanagement.

Your Role

Manage and maintain on-premises infrastructure technologies, including:

• Firewall administration.
• SIEM and SOAR platforms.
• Network troubleshooting.
• Vulnerability management.
• Oversee and enhance security within the Microsoft 365 stack.
• Collaborate with team members on complex projects while independently owning specific technical domains.
• Respond effectively under pressure in a fast-paced environment.

• Years of experience in infrastructure or security engineering roles.
• Firewall management (Check Point, Palo Alto preferred).
• SIEM and SOAR platforms (Splunk SOAR, LogRhythm).
• Vulnerability management (Tenable).
• Network troubleshooting (Cisco desirable).
• Microsoft 365 security stack (required).
• Strong problem-solving mindset and ability to work unsupervised.
• Excellent communication skills for team collaboration.

Desirable Skills

• PowerShell scripting.
• Familiarity with equivalent technologies if not exact brands.
• Exposure to automation and process improvement.

Wherever you are in your career - and whoever you are - AtkinsRéalis is for you. Here, support and collaboration are a vibrant part of a culture that lets you choose where - and how far - your career can go. Take on projects that push boundaries and drive sustainable impact, surrounded by colleagues who believe there's no limit to how brilliant you can be. It's time to join a like-minded team where you'll be rewarded, supported, and free to be your kind of brilliant. Reward & 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. 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.