Lead AWS Security Engineer / AWS Security Architect - Outside IR35 - Remote First - FTSE100 Financial Services Contract Details: Day Rate: £600 - £650per day (Outside IR35) Arrangement: Remote (Primarily remote, with occasional on-site visits when required - no more than 2x per month) Length: Initial 6-month contract with high potential for further extensions. We are seeking a highly skilled AWS Tech Lead / Security Architect to join a dynamic, high-performing team. This role is a 60/40 split, with a heavier focus on hands-on technical delivery while also providing leadership and guidance to the engineering team. You will work closely with the Enterprise Architect to design and expand the Threat Modelling and Assurance functions across multiple AWS environments. Key Responsibilities: Act as the subject matter expert (SME) in AWS security, driving DevSecOps capabilities across multiple AWS-heavy environments. Design and implement security solutions leveraging AWS security tools such as GuardDuty, ControlTower, CloudTrail, Security Hub, and more. Provide expertise in Threat Modelling, Security Assurance, and Auto-Remediation techniques. Collaborate with the Enterprise Architect to design and enhance secure cloud environments. Contribute to the development of Threat Modelling and Assurance frameworks. Guide teams in designing secure infrastructure solutions with a focus on networking, IAM, and data protection. Serve as the go-to technical lead for engineers, providing mentorship and guidance. Lead stand-ups, manage Jira boards, and ensure smooth collaboration between engineering and architecture teams. Act as a bridge between the developers and senior stakeholders, effectively communicating technical challenges and solutions. Apply deep expertise in Infrastructure, Networking, and IAM Security with a strong emphasis on AWS. Lead and manage multiple security projects and ensure best practices are followed. Oversee security assurance efforts to ensure compliance and mitigate potential risks. Communicate effectively between development teams and architects to ensure seamless project delivery. Provide technical leadership in high-pressure situations, driving decision-making and ensuring timely resolution of issues. Key Requirements: Proven experience as an AWS Security Architect or Tech Lead in organisations with large-scale AWS environments. Hands-on expertise in AWS security tools such as GuardDuty, ControlTower, CloudTrail, Security Hub, etc. Strong background in Infrastructure, Network, and IAM Security with a focus on cloud environments. Experience with Threat Modelling and Security Assurance Demonstrated ability to mentor and guide teams, manage Jira boards, and run stand-ups. Excellent communication skills, with the ability to act as a spokesperson between engineering and architecture teams. Important Note: This role may NOT suitable for professionals whose primary expertise lies in Infrastructure, Network, or IAM Engineering/Architecture. Similarly, an AWS DevOps Engineer with a strong infrastructure focus, or a DevSecOps Engineer with limited design and architecture experience, would not be the right fit. A deep and comprehensive understanding of AWS Security, with hands-on technical expertise, is essential. Additionally, candidates with a background predominantly focused on Azure or GCP would not align with the requirements, as this role demands specialised AWS Security knowledge rather than a generalist cloud security skill set. Nice-to-Have Skills: Experience with Kubernetes Security. Knowledge of additional security frameworks and compliance standards. AWS Security Certification Experience within auto-remedia