Theofilos Paraskevas logo

I enjoy building fast, reliable web experiences — from small e-commerce shops to large-scale enterprise platforms — caring about every detail in between.

About

I'm Theofilos — Theo — a software engineer based in Thessaloniki, Greece. My journey with the web started in 2015, when I began building WordPress websites while studying Computer Science. What started as curiosity quickly became a passion for creating digital experiences that combine technology, design, and real-world impact.

Today, I work on modern React and Blazor enterprise applications, while continuing to collaborate on web projects as an independent contractor.

What I enjoy most is the intersection of design and engineering — creating interfaces that feel intuitive, systems that perform reliably, and digital products that deliver measurable results. From small e-commerce websites to large-scale platforms, I enjoy taking ownership of the entire journey: from the first concept and architecture, through development and deployment, to hosting, analytics, SEO, and long-term optimization.

For me, great software is not just about writing code. It is about building experiences that work beautifully, scale effectively, and create value for the people who use them.

Current role
Software Engineer · Contractor
Currently working on
React + Blazor enterprise applications

Core strengths

  • Component-driven frontend architecture
  • Performance & Core Web Vitals
  • APIs & system integrations
  • End-to-end delivery — design to hosting

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Years of experience

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Projects delivered

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Tech stacks mastered

Featured Projects

A mix of enterprise apps, e-commerce and the open web.

B2B Procurement Auction Platform

Full-stack e-procurement platform for multi-phase supplier bidding — admin portal, supplier portal and REST API with 2FA, SoftOne ERP integration and Excel workflows.

.NET 8BlazorReactTypeScriptTailwind CSSDevExpress

Automated Approval Workflow System

Reusable approval workflow engine — state-based request lifecycle, automated email notifications and secure one-time token actions for external approvers.

BlazorC#.NETEntity Framework CoreSQL

E-commerce & WooCommerce Solutions

Production WooCommerce platforms — marketplace (Skroutz) and ERP integrations, payments, shipping automation, SEO/analytics and hardened hosting.

WordPressWooCommercePHPSkroutzCloudflareMySQL

Skills

The technologies I use day-to-day, grouped by area.

Languages

C#
TypeScript
JavaScript
PHP
SQL

Frontend

React
Blazor
HTML5
CSS3
Bootstrap
Tailwind CSS
DevExpress

Backend

ASP.NET Core (.NET)
Entity Framework Core
REST APIs
Swagger / OpenAPI
Node.js

Databases

SQL Server
MySQL
MariaDB
PostgreSQL

CMS & E-commerce

WordPress
WooCommerce

Cloud & DevOps

Git
GitHub
Bitbucket
Docker
Cloudflare
cPanel
Plesk
WHM
CI/CD

Automation & AI

Claude
OpenAI API
MCP
Microsoft Copilot Studio
Power Automate
n8n

Tools

Jira
Confluence
SourceTree
Postman
AnyDesk
RDP
Photoshop
Illustrator

Experience

  1. 2014

    Microsoft Office Specialist

    Certified in Word, Excel, PowerPoint, Access and Outlook — the same year I started my Computer Science studies (2014).

  2. 2016

    WordPress Entry-Level Developer

    First entry web development role — maintaining, updating WordPress websites and organizing database backups (2016).

  3. 2017

    Freelance Web & Graphic Designer

    WordPress websites and e-shops for small businesses, brand logos and visual identities, and performance & UX improvements (2016 – 2020, alongside my CS studies).

  4. 2019

    Graphic Design Certification

    Certified in fundamental and advanced design techniques — Photoshop, Illustrator and InDesign.

  5. 2020

    Military Service

    Completed the mandatory military service in Greece (2020 – 2021).

  6. 2021

    CS Degree → Marketing Agencies

    Graduated B.Sc. Computer Science and moved into agency work: websites & applications, UX/UI, SEO and responsive design, plus WHM/cPanel/Plesk server, domain and DNS management (2021 – 2024).

  7. 2024

    Marketing Agencies → Software

    Building and maintaining enterprise applications — developing modern UIs with React and Blazor, designing backend solutions with .NET, working with databases, APIs, ERP integrations, IIS deployments, Bitbucket and Github CI/CD pipelines, and Azure/Atlassian automations (2024 – Present).

  8. 2026

    Software Engineer & Contractor

    Working as a software engineer while taking on web projects as an contractor — end-to-end websites, hosting and automation (2026 – Today).

Education & Certifications

2014 – 2021

B.Sc. Computer Science

International Hellenic University, Serres

Thesis: penetration testing techniques and a custom Web Application Firewall built with CodeIgniter, using Kali Linux tools (Metasploit, Nmap).

2019

Graphic Design Certification

KEME, Thessaloniki

Fundamental and advanced design techniques — Photoshop, Illustrator and InDesign.

2014

Microsoft Office Specialist

K.E.K., Thessaloniki

Certification in Word, Excel, PowerPoint, Access and Outlook.

Services

Frontend Development

Modern, accessible interfaces with React, Next.js and TypeScript.

.NET Applications

Business apps and APIs on the .NET platform, from design to deploy.

WordPress Development

Custom themes and plugins — fast, secure, easy to maintain.

WooCommerce

E-shops that convert: catalog, payments, shipping, upsells.

Web & Graphic Design

Color schemes, typography and visual identity — logos, banners and web elements designed to fit your brand.

SEO

Technical SEO, structured data and content architecture that ranks.

Hosting & Servers

Setup, migration and management — cPanel, Cloudflare, Docker.

Automation

Workflows, integrations and scripts that remove manual work.

AI Integrations

Chatbots, content pipelines and AI features inside your product.

Support & Consulting

Troubleshooting, technical support and honest guidance for your website and online presence.

Blog

Contact

Whether you're a business seeking web support or a team looking to hire — send a message, I usually reply within a day.

Opens your email app with the message pre-filled.

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Based in Thessaloniki, Greece© OpenStreetMap contributors