A combination of infrastructure engineering, Linux administration, DevOps practices, cloud-native technologies and automation.
Linux, Docker, Kubernetes, CI/CD, Nginx and Caddy, with monitoring and observability. Deployed on cloud and VPS, including AWS, Oracle Cloud and Cloudflare.
TCP/IP, DNS, routing, firewalls, VPNs and load balancing, with network segmentation and subnetting. Packet analysis using Wireshark and tcpdump.
Web, mobile and cloud penetration testing, Linux hardening and incident response. Red team and blue team labs, CTF, plus Burp Suite, Nmap and Metasploit.
Designing and building reliable software: system and API design, data modelling, testing, performance and maintainability, from first idea to production.
Adding AI to real products: LLM integration, agents, tool calling and retrieval augmented generation, with prompt design, evaluation and cost control.
Maintaining community repositories, running beginner-friendly contribution programs and mentoring developers. Active across open source communities.