A bit about us… Amiosec is an exciting and growing UK technology company with innovation, agility, and state of the art technology at its core. We work in partnerships with UK government customers and commercial providers to deliver research, technology, products, and services in the communications security sector. We empower our staff to make a positive difference and strive for innovation in everything we do. We operate with integrity, mutual respect and honestly, striving always to meet commitments we make to each other, our business partners, and our customers. PLEASE NOTE: - Due to the nature of our work, all candidates will be required to obtain and maintain an appropriate UK security clearance. The role… Reporting to the Engineering Technical Manager, the successful candidate will become a part of the build team. You will complete technical work packages for both internal and external projects, and provide Level 3 support managing, maintaining and supporting computing infrastructure within secure environments and cloud-based services. Typical Duties include: Working in collaboration with Project Delivery teams across Engineering Build Teams, Managed Services, Programme Delivery and Production teams supporting delivery outcomes for all stakeholders and customers. Installing & deploying new infrastructure in support of customer projects (vCenter clusters, Ubuntu/RHEL virtual machines, containerised workloads). System Administration of Linux systems at an advanced level (Ubuntu/RHEL). Administering AWS Cloud environments. Working with cross domain solutions. Writing Ansible playbooks to deploy and manage virtual infrastructure. Implementing CIS security controls and compliance measures (security hardening) to Linux systems. Integrating and testing of new products to enhance new and existing infrastructure. Creating and maintaining high-level system architecture diagrams / documentation. Ensuring security hardening best practices are followed and that these remain up to date in various environments. Required Skills: Experience as a Linux or Systems Engineer – minimum of 2 years Demonstrated knowledge of PKI principles, certificate management, and cryptographic systems. Working knowledge of AWS Cloud Technologies. Strong understanding of networking fundamentals, e.g.DNS, TCP/IP, routing, and switching. Previous experience with Hypervisor technologies, e.g. VMware vSphere, vSAN, vCenter. Practical understanding of container platforms and orchestration e.g. Docker. Linux server administration, at an advanced level (Ubuntu/RHEL). Working knowledge of at least one scripting language, e.g. Python, Bash. Monitoring and logging of systems using tools like Prometheus, Grafana, or ELK. Experience with IaC tools (ideally Ansible). Working knowledge of version control methodologies and practices. Desirable: Ideally a minimum of 5 years for Senior Systems Engineer. Experience with air gapped environments. Understanding of cross domain solutions. Working knowledge of CI/CD principles and implementation in secure environments. Working knowledge of real-time communication protocols such as SIP, XMPP, and RTP. Experience with MDM (Mobile Device Management) platforms. Managing Cloud infrastructure with IaC tools such as Terraform, in a secure manner. Why work at Amiosec? We here at Amiosec appreciate the work our staff do, as a result we offer a comprehensive benefits package consisting of: Life Insurance - X4 Salary Private Health Scheme, that disregards medical history, has no excess and no limit on treatments Salary Sacrifice Company Penson, matched up to a maximum of 10% 25 Days Holiday Bank/Public Holidays Option to buy an additional 37.5 holiday hours Cycle to work scheme Coffee & Cake mornings every fortnight Enhanced Maternity & Paternity leave Team Away Days Additional things that are good to know: Free, on site parking Casual dress Free fruit in office Free flu jabs Health & wellbeing programme Amiosec is committed to providing equality of opportunity for all. We aim to ensure our workplaces are free from discrimination and that our current and future colleagues, are treated fairly and with dignity and respect. Please inform us of any reasonable adjustments that we may need to make to the application or interview process.