Emiliano Castellina

File Input/Output in Python

Thu, 30 Apr 2026 00:00:00 +0000

Reading and writing text and binary files with open() and the with context manager.

Functions in Python

Thu, 30 Apr 2026 00:00:00 +0000

Define reusable functions in Python, with optional parameters, *args and **kwargs.

Lists in Python

Thu, 30 Apr 2026 00:00:00 +0000

Python’s basic structure for collecting sequences of values: how to create, modify and iterate over them.

Object-Oriented Programming in Python

Thu, 30 Apr 2026 00:00:00 +0000

Introduction to Python classes with a practical networking case study: the IPAddress class.

The CSV Library in Python

Thu, 30 Apr 2026 00:00:00 +0000

Reading and writing CSV files with csv.reader, csv.writer, DictReader and DictWriter from the standard library.

The requests library in Python

Thu, 30 Apr 2026 00:00:00 +0000

Sending HTTP requests in Python: GET, POST, headers, cookies and sessions with the requests library.

Advanced Functions and Modules in Python

Thu, 30 Apr 2026 00:00:00 +0000

How to organise Python code into separate modules and import them correctly into your programs.

Advanced OOP: Inheritance, Abstract Classes and Polymorphism

Thu, 30 Apr 2026 00:00:00 +0000

Inheritance, abstract classes and polymorphism: how to extend and specialise classes in Python.

File Management in Python

Thu, 30 Apr 2026 00:00:00 +0000

File system operations with os, pathlib and shutil: finding, renaming, copying and deleting files.

Flask: building web apps with Python

Thu, 30 Apr 2026 00:00:00 +0000

How to build a Python web app from scratch with Flask: routes, Jinja2 templates, forms and sessions.

Introduction to Graphs in Python

Thu, 30 Apr 2026 00:00:00 +0000

Graphs in Python: representation, DFS/BFS traversal algorithms and shortest paths with Dijkstra and NetworkX.

List Slicing in Python

Thu, 30 Apr 2026 00:00:00 +0000

How to extract and modify portions of a list with the [start:stop:step] syntax and negative indices.

Tuples in Python

Thu, 30 Apr 2026 00:00:00 +0000

Immutable sequences in Python: when to prefer them over lists and how to exploit unpacking.

Sets in Python

Thu, 30 Apr 2026 00:00:00 +0000

Mathematical sets in Python: removing duplicates and using union, intersection and difference.

Dictionaries in Python

Thu, 30 Apr 2026 00:00:00 +0000

Python’s key-value structure: how to create, modify and iterate over dictionaries.

Comprehensions in Python

Thu, 30 Apr 2026 00:00:00 +0000

Compact syntax for building lists, sets and dictionaries in a single line of code.

Freelance IT Consulting

Tue, 22 Sep 2026 00:00:00 +0000

Services

What I can do for you

Focused consulting or end-to-end development, depending on what's needed: from architecture down to the code itself.

☁️

Cloud Architecture (Azure)

Design, migration and optimization of Microsoft Azure solutions — from infrastructure to PaaS services, with an eye on cost and scalability.

💻

Software Development

Web applications, APIs and backend services. Experience with .NET / .NET Core, Python, and integrations across heterogeneous systems.

🤖

AI & Data

Solutions built on Azure Cognitive Services and Machine Learning: from prototyping to integration into existing processes.

Curriculum

Tue, 01 Sep 2026 00:00:00 +0000

Work Experience

2026 — present

Tenured Teacher — Subject group A027

Ministry of Education and Merit (Italy)

Teaching Mathematics and Physics at IIS Lagrangia in Vercelli.

2021 — 2026

Tenured Teacher — Subject group A041

Ministry of Education and Merit (Italy)

Teaching Computer Science, Networks & Systems, Information Technologies and Applied Sciences. A.y. 2021-22 at ITIS Q. Sella (Biella); from 2022-23 at ITIS G. Galilei (Santhià, VC).

Dec 2020 — Sep 2021

Azure Architect / Dynamics CRM Specialist / Technical Lead

Cluster Reply — Turin, Italy

IT consulting in Azure cloud and Microsoft Dynamics CRM platforms.

Mar 2019 — Dec 2021

Manager / Azure Architect / Data & AI Specialist

HUDI — Milan, Italy

Design of Azure cloud architectures in insurance-tech, HR and AI:

Azure ML and Cognitive Services for an insurtech startup platform — policy recognition and premium estimation
Azure Architect for SSO integration between Cattolica Assicurazione and IMA Group
Data specialist for HR Recruiting refactoring at Adecco Italia
Voice recognition prototype for Zegna fashion house
Face recognition access control system (Azure Cognitive Services)

Oct 2011 — Mar 2019

Project Manager / Senior Consultant / Senior Developer

Cluster Reply — Turin, Italy

Enterprise consulting on diverse projects:

Project Manager and Senior Developer on a workforce management application for Costa Cruises (team of 4)
Design and development of Dynamics CRM applications (CNH, FCA, Iveco)
Web application development (.NET MVC, .NET Core) and desktop (WPF)
Data Analysis and mobile application development

Feb 2009 — Sep 2011

Research Fellow (Post-doc)

Department of Control and Computer Engineering — Politecnico di Torino

Research in home automation and Assistive Technologies. Supervision of undergraduate students, participation in European consortia, development of software aids for people with disabilities in collaboration with the neuroscience department of Molinette Hospital, Turin.

Jan 2006 — Jan 2009

PhD Student in Computer and Systems Engineering

Politecnico di Torino

Research in Assistive Technologies and Home Automation. Participation in the European Network of Excellence COGAIN (eye tracking).

Education

2024

Master's Degree (Level I) in Mathematical Logic Disciplines

UniCamillus — International University of Health Sciences, Rome — ISCED 7

1500 hours of training.

2009

Ph.D. in Computer and Systems Engineering

Politecnico di Torino — ISCED 8

Quality of Scientific Production Award by SCUDO (Doctoral School), 2008.

2005

Master of Science in Computer and Systems Engineering — 102/110

Politecnico di Torino — ISCED 7

1999

Scientific High School Diploma, Technology track — 98/100

Liceo Scientifico "A. Avogadro", Vercelli — ISCED 3

2005

Professional Engineer License

Teaching Activity

Period	Subject	Institution
Since 2022	Computer Science, Networks & Systems, Information Technologies, Applied Sciences	ITIS G. Galilei, Santhià (VC)
2021–22	Computer Science, TPSIT	ITIS Q. Sella, Biella
2010–11	Web Application Design; Multimedia Languages and Environments	Politecnico di Torino
2008–10	Web Application Design	Politecnico di Torino
2008–10	Mathematics	ITIS G. Galilei, Santhià (VC)
2007–08	Web Application Development; Web Application Design	Politecnico di Torino
2006–07	Algorithms and Advanced Programming	Politecnico di Torino
2005–06	Mathematics and Computer Science	Liceo Scientifico "A. Avogadro", Vercelli

Certifications

Microsoft

Multimedia Encoding — TPSIT Exercises

Wed, 24 Jun 2026 00:00:00 +0000

Step-by-step calculator for the six classic TPSIT exercises: print size in cm from Mpx, video+audio bit rate, image size (True Colour, 4 bit, palette) and Run-Length encoding on an 8×8 grid.

Cloud Computing

Wed, 10 Jun 2026 00:00:00 +0000

Reference guide for Networks & Systems — final year. Covers cloud service models, virtualisation (VMs, containers, serverless), SDN, managed databases, hybrid and multi-vendor cloud, SLA, pricing and GDPR implications.

Local Network Design — Part 1: Physical Infrastructure and WLAN

Wed, 10 Jun 2026 00:00:00 +0000

First part of the local network design guide: structured cabling hierarchy, Ethernet cable categories, fibre optics, Power over Ethernet and wireless network architecture.

Local Network Design — Part 2: Bandwidth, VLANs, IP and Services

Wed, 10 Jun 2026 00:00:00 +0000

Second part of the local network design guide: WAN bandwidth calculation, failover, VLAN 802.1Q segmentation, IP addressing plan with CIDR subnetting, and DHCP, DNS and NAT/PAT service configuration.

Local Network Design — Part 3: Security and Regulations

Wed, 10 Jun 2026 00:00:00 +0000

Third part of the local network design guide: perimeter defence with firewalls and DMZ, traffic filtering with standard and extended ACLs, secure remote access via VPN, and compliance with European GDPR and NIS 2 Directive regulations.

The Diffie-Hellman Key Exchange

Wed, 10 Jun 2026 00:00:00 +0000

A complete explanation of the Diffie-Hellman key exchange: from pre-1976 symmetric cryptography to modular arithmetic, the discrete logarithm problem, the DH algorithm with a numerical example (p=23, g=5), and the elliptic curve variant (ECDH).

TLS/SSL — Secure Communication on the Web

Wed, 10 Jun 2026 00:00:00 +0000

A complete guide to TLS/SSL: evolution from SSL 2.0 to TLS 1.3, layered architecture, step-by-step handshake (TLS 1.2 and 1.3), the X.509 certificate chain, cipher suites with Forward Secrecy, AEAD and practical inspection tools.

Subnetting Suite — IP Network Calculators

Sun, 07 Jun 2026 00:00:00 +0000

Suite of five interactive tools that guide the user through all subnetting exercises: mask conversion, network analysis, fixed-length subnetting (FLSM), variable-length subnetting (VLSM) and route aggregation (supernetting).

NetTools Suite — Calculators for Computer Science

Fri, 05 Jun 2026 00:00:00 +0000

Suite of four interactive tools: unit converter (bytes/kB/MB…), download time calculator, binary encodings (Sign & Magnitude, Two’s Complement, Excess-K) and IEEE 754 visualiser.

Basic FTP Commands

Thu, 30 Apr 2026 00:00:00 +0000

Reference guide to the essential FTP commands for command-line file transfer: connecting, navigating, uploading, downloading and transfer modes.

Cisco IOS Cheatsheet

Thu, 30 Apr 2026 00:00:00 +0000

Quick reference for Cisco IOS commands: operational modes, dynamic routing (RIP, OSPF), DHCP, VLAN, VTP, NAT/PAT and port forwarding.

Python for Cybersecurity

Thu, 30 Apr 2026 00:00:00 +0000

Introductory guide to using Python in cybersecurity: virtual environments, library installation, and an overview of the main libraries (pyshark, pwntools, scapy, requests, BeautifulSoup, selenium).

Sockets in Python — TCP, UDP and Threading

Thu, 30 Apr 2026 00:00:00 +0000

Practical guide to network programming with Python: TCP and UDP sockets, exception handling, multi-client server with threading.

The pwntools Python Library

Thu, 30 Apr 2026 00:00:00 +0000

Practical guide to pwntools: connecting to remote services, receiving data with recvuntil/recvline/recvn, interactive mode, timeouts and pattern matching with expect().

CPU Scheduling Simulator with I/O

Wed, 02 Apr 2025 00:00:00 +0000

Interactive exercise to simulate FCFS, SJF, SRTF, Round Robin and scheduling with priority and I/O interrupts.

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Mon, 01 Jan 0001 00:00:00 +0000

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