Angelo Shaheen

Application Manager · System Administrator & Infrastructure · Full-Stack & Automation Development · Linux / Docker / SQL / AI

Available immediately, full-time · driving licence + car

Profile

IT and software professional with experience at PRA Group in Germany, progressing from System Administrator to Application Manager on business-critical financial systems. Combines two worlds: infrastructure (Active Directory, Group Policy, DNS, DHCP, Windows Server, Microsoft 365 and Azure, VMware, backups, physical infrastructure) and hands-on development (SQL Server, automation in Python, C# and PowerShell, API integrations including with government systems). In parallel builds and ships full-stack and AI products end to end on a Linux/Docker platform he runs himself.

Experience

PRA Group Duisburg, Germany

2023 – 05/2026

International financial-services group. Continuous employment alongside computer-engineering studies, promoted from systems to application management.

Application Manager

2024 – 05/2026
  • Development, maintenance and support of financial systems including Debtrak, in an audited environment with access control and controlled change management.
  • Writing and optimising SQL queries in SSMS for data investigation, reporting, validation and troubleshooting on live financial data.
  • Integrated the Polish government e-invoicing API: automated sending, receiving and processing against government systems and external companies.
  • Built internal tools in C#, Python, PowerShell and SQL for invoice, legal, archive and print workflows; delivered through Azure DevOps and GitHub.
  • 2nd/3rd-level support for business users, including root-cause analysis and working with external vendors to resolution.

System Administrator

2023 – 2024
  • Active Directory on-prem & hybrid: user lifecycle, groups and OUs, role provisioning and permission changes across departments.
  • Group Policy, DNS and DHCP: creating and editing GPOs and linking them to OUs, managing records, scopes and reservations, connectivity troubleshooting.
  • Windows Server & virtualisation: server, file and print server maintenance, permissions and updates; VMware ESXi & vCenter — VMs, snapshots, datastores.
  • Backup & restore: monitoring backup policy, handling failures, performing restores and restore tests.
  • Microsoft 365 & Azure: users and groups, licences, Exchange Online, Teams and SharePoint, access policies.
  • Physical infrastructure & support: installing and cabling servers, network cabinets and switches; end-to-end tickets and SLA in Jira.
  • Internal tools in C# and PowerShell — AD Role Copier, AD User Manager, Jira monitoring with Teams alerts, Email to PDF, Printer Manager and Mass File Transfer — replacing repetitive manual work. Winner of the PRA Innovation & Impact award (Feb 2026).

ISCAR Israel

4 months

IT support, quality control & logistics. Technical support for users and production workstations, alongside quality control, logistics and packing work.

SmrtStand University start-up project

2024 – present

Founder · hardware, firmware & software development. Full prototype of a smart headset stand: electronics, ESP32-C/Arduino firmware and sensors, companion software for automatic audio switching, USB hub, wireless charging and RGB control. 2nd place in the GUIDE start-up competition, which came with a year of business training; built the brand and the product site smrtstand.com.

Projects

Built end to end: spec, UI, frontend, backend, database, auth, payments, production deployment & operations.

Uchiyomi uchiyomi.com

Next.js · Fastify · PostgreSQL · Docker

Self-hosted manga server and reader in one container: discovery and downloads, chapter tracking, offline-capable PWA reader, admin dashboard with argon2id and 2FA. Open source.

Tectura Studio tectura.studio

Next.js · TypeScript · Supabase/PostgreSQL with RLS · Stripe

Platform for a pre-university architecture preparation programme: marketing site plus an admin system with dashboards for admins, teachers and students — classes, exams, attendance, grades and payments.

Shkofit.ai

TypeScript · Next.js · Supabase · LLM APIs & local models · RAG

AI-based classroom operations system: source-grounded presentation generation, quizzes and rubrics, automatic checking and grading, PPTX export.

AuctionScanner / GoblinBid parked

FastAPI · Python · Celery · Redis · TimescaleDB · Ollama

Trading-intelligence platform: real-time market data collection, price history, ML scoring and ranked trade signals.

Makateeb makateeb.net

PHP/Apache · SQLite · Stripe · Docker

Digital-invitation platform for private and business events: designed event pages, premium templates, guest-list import, personal invite links, RSVP tracking, payments, email and WhatsApp sending.

Also built: Agent Weaver / CodeChan (AI-agent orchestration on a visual canvas), WantViews (parked), PRA Challenge (2026 step challenge with Strava sync), YTWeb (yt-dlp web UI), Compose Manager (public repo) and Jellyfin Federation (WebDAV); built with React, TypeScript, Express, WebSockets, FastAPI, SSE, Go.

Self-hosted infrastructure

A Linux platform he built and runs from scratch: 40+ stacks, 120+ running containers, 190+ images and 35+ networks; 40+ proxied domains, admin tools behind SSO. DNS, reverse proxy, SSL, Docker Compose, separate production and staging. Runs Portainer, Nginx Proxy Manager, Cloudflare, Authentik, Vaultwarden, Mailcow, Forgejo, Woodpecker CI, Supabase, PostgreSQL, Redis, Nextcloud, Guacamole, Jellyfin and Ollama. Ongoing operations: version updates, volume backup & restore, monitoring and certificate management. Live at angeloshaheen.com.

Skills

Infrastructure & systems
Active Directory (on-prem & hybrid), Group Policy, DNS, DHCP, Windows Server, VMware ESXi & vCenter, backup & restore, physical servers & switches
Microsoft & cloud
Microsoft 365, Azure, Azure AD / Entra ID, Exchange Online, Teams, SharePoint — users, licences, access policies
Linux & DevOps
Linux, Shell/Bash, Docker & Docker Compose, Nginx/Apache, reverse proxy, SSL/TLS, Cloudflare, production & staging environments
Development
C#, .NET, Python, PowerShell, TypeScript/JavaScript, SQL, C/C++; Next.js, React, FastAPI, Express, REST APIs
Data
Microsoft SQL Server, SSMS, T-SQL, PostgreSQL, TimescaleDB, Supabase, Redis
Tools & delivery
Git, GitHub, Azure DevOps, CI/CD, Jira, Selenium, Power Automate; Authentik, Authelia, SSO & access control

Education

B.Sc. studies in Computer Engineering — Universität Duisburg-Essen, Germany

2020 – 2026

ISE, Software Engineering specialisation. Completed coursework in the programme; left before graduating when moving back to Israel.

Business & entrepreneurship training

2024 – 2025

A year of business courses after winning the GUIDE competition — business planning, pitching, positioning and competitor analysis.

Technology high school — Notre Dame, Mi'ilya · physics / mechatronics

2017 – 2019

German studies — Kapito, Münster, Germany

Languages

Arabic (native) · Hebrew (very high) · English (very high) · German (very high) · Japanese (A1)