Thomas L'Estrange

Cyber Security Solutions Engineer | Computer Science Graduate

United Kingdom

About

Delivering cybersecurity solutions across data diodes and OT.

Experience

  • 4Secure Ltd (Full-time · 11 mos)
    • Cyber Security Solutions Engineer
      Mar 2026 - Present · 5 mos

    • Junior Cyber Security Engineer
      Sep 2025 - Present · 11 mos

  • Intern at Amfora
    Jan 2024 - Sep 2024 · 9 mos

    Deployed and secured EC2 instances in AWS, implementing system hardening and log monitoring using Grafana. Developed and maintained a secure MQTT broker (TLS) and associated Python services using systemd for automated deployment. Designed and built a web frontend using Next.js and integrated it with a MySQL backend for secure data flow. Collaborated in a small, agile team - applying DevOps principles to automate and maintain backend services on a Linux platform. Ensured system uptime, access control, and effective audit logging in a production environment.

  • Data Analyst at Cecil Wright
    Jul 2023 - Sep 2023 · 3 mos

    Configured role-based access control (RBAC) across Microsoft 365, SharePoint, and Azure AD (transitioning to Entra ID). Automated data workflows using Microsoft Dynamics and Power Automate to reduce CRM-related vulnerabilities from manual data entry. Integrated web forms with CRM for lead tracking and monitoring, applying secure-by-design principles.