Tilemachos Tsakiris

Business Analyst at Deloitte · Thessaloniki, GR

taf@tafstack.com tilemachost itstaftaf portfolio.tafstack.com

Profile

Business Analyst at Deloitte, working within Technology & Transformation on Emerging ERP Solutions. 2+ years of hands-on experience in structured troubleshooting, incident management, and infrastructure support across Windows and Linux environments.

Strong foundation in networking, virtualization, and cloud-hosted systems. SLA-focused mindset with end-to-end ticket ownership and clear stakeholder communication.

Actively building in automation and AI — from self-hosted infrastructure to LLM-powered workflows and agentic systems.

Experience

Business Analyst Aug 2026 – Present

Deloitte Alexander Competence Center · Thessaloniki

Business Analyst within Deloitte's Technology & Transformation practice, on the Emerging ERP Solutions team (Enterprise Technology & Performance)
Support enterprise ERP systems through monitoring, issue resolution, and cross-team coordination as part of a 24/7 managed services model
Operate within a technical environment involving Active Directory, ServiceNow, and ITIL-based incident and problem management processes across rotating shifts
Bridge technical operations and business needs, drawing on a background in customer support, workflow coordination, and network fundamentals (CompTIA Network+)

Operations & Support Specialist Feb 2024 – Mar 2026

Large Vendor & Client Services Company

Handled daily client communication through phone, email, and chat in a high-volume operational environment
Managed structured incident intake, prioritization, and resolution while meeting service level expectations
Maintained end-to-end case ownership, diagnosing and resolving operational, access, and configuration issues with systematic troubleshooting
Escalated complex issues and coordinated with vendors during service disruptions to maintain operational continuity

Skills

IT Operations

Incident Management SLA Management Root Cause Analysis Troubleshooting Documentation Jira ServiceNow ITIL / ITIL4

Infrastructure

Linux Docker Proxmox VE Cloudflare SSH Hardening SSL / TLS KVM / LXC ZFS systemd

Networking

TCP/IP DNS DHCP VLANs Firewall Rules WireGuard Zero Trust / ZTNA

Security

Azure Entra ID Active Directory Vulnerability Scanning Kali Linux

Automation & AI

Python Bash Ansible Git GitHub Actions RAG Pipelines LLM Integration Ollama

Web

HTML CSS JavaScript

Education

BSc — Biomedical Sciences

International Hellenic University · GPA 8.9 / 10

2019 – 2023

Certifications

CompTIA Network+

Computing Technology Industry Association

ECPE — C2 English Proficiency

University of Michigan

International Diploma in IT Skills

Cambridge International Education

Tilemachos Tsakiris Business Analyst at Deloitte · Thessaloniki, GR

Side Projects

Hermes Agent Ecosystem

Architected and deployed a modular AI assistant across Telegram, SMS, Discord, CLI, and voice. Built with skill-based architecture, ChromaDB RAG, OpenRouter multi-model routing, and Twilio voice integration. Managed via Docker Compose, Caddy, systemd, and Twingate ZTNA on a self-hosted VPS.

Platform & Access Infrastructure

Secure hybrid infrastructure spanning a cloud VPS, Raspberry Pi, and Proxmox homelab. Zero Trust networking with Twingate, Caddy reverse proxy, automated TLS, hardened SSH, and Pi-hole for network-wide DNS filtering.

Web Development & Deployment giortesdasous.gr ↗

Designed and deployed production websites, including the official Γιορτές Δάσους event site and this portfolio — managing DNS, Cloudflare, SEO, and analytics end to end.