About PentenAmio PentenAmio is a multi-award winning cyber technology company dedicated to strengthening our nation’s security and prosperity through new and innovative technology. Our advanced hardware and software products and services support our clients with Secure Mobility, Applied Artificial Intelligence and Innovation and Technical Services Solutions. To find out more visit our website at pentenamio.com. Typical Activities: 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. What we're looking for: 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: 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. Qualifications & Eligibility To be eligible for this position you must: Be an British citizen; and Hold or be able to obtain a NSV-DV clearance. Experience as a Linux or Systems Engineer – minimum of 2 years Why Work at PentenAmio? At PentenAmio, we value our employees and offer a comprehensive benefits package, including: Life Insurance - X4 Salary Private Health Scheme with no medical history checks, excess, or treatment limits EV Salary Sacrifice scheme Salary Sacrifice Company Pension, matched up to 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 perks: Free on-site parking Free Flu Vaccination Casual dress code Free fruit in the office Health & Wellbeing program PentenAmio 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. This role / position description is to serve as a guide. It is intended to be flexible and will continue to evolve over time with business needs and demands and may be updated periodically at the Company’s discretion.