Software Developer

Mario
Syti

Building reliable backends in C# and .NET
in Copenhagen, originally from Athens.

.NET / C# ASP.NET Core MSSQL Azure
Mario Syti

Backend developer with a
builder's mindset.

With 3+ years of hands-on experience building ERPs, CRMs, and web applications, I specialize in clean, maintainable .NET backend, applying DDD, OOP, and clean architecture to real world business problems.

I moved from Athens to Copenhagen in 2022, drawn by the city's culture and pace. Outside of code, I'm deep into finance, trading, and investing and I believe the same discipline that makes a good trader makes a good engineer: consistency, patience, and a long term lens.

3+Years of experience
2Countries worked in
Lines of C# written

From Athens
to Copenhagen.

In 2022 I made a deliberate decision to leave the familiar behind and move to one of Europe's most forward thinking cities. Not just for a job, but to catapult both my career and my personal development forward.

Athens gave me my foundations: my first lines of C#, my first clients, my first real understanding of what it means to deliver software that works. But Copenhagen offered something different, a tech culture built on trust, autonomy, and craftsmanship. The kind of environment where you grow fast because the bar is simply higher.

Living and working in Denmark has sharpened me in ways I didn't expect. Professionally, I stepped into a larger engineering scope at Effectmakers, full end-to-end ownership, production systems, real responsibility. Personally, I built new routines, a new city, and a clearer sense of who I am and what is my identity.

That decision to move, to bet on myself is one I'd make again without hesitation. And later I did.

AthensWhere it started

First .NET role, first clients, foundations built.

CopenhagenWhere it levelled up

Full ownership, higher standards, personal reinvention.

Career timeline

Sep 2022 – Apr 2024Copenhagen, DK

Software Developer

Effectmakers

Created, developed and optimized backend features in C#/.NET, improving performance across multiple ERP modules. Engaged in discussions and status meetings, contributing with solutions towards making both incremental and drastic changes in the backend. Optimized backend performance and reduced query time by up to 65% on certain modules. Maintained SQL databases, created / modified stored procedures, ensured data integrity. Created API projects on .NET 7 that automated company's productivity.

C# / WinForms.NET 4.8.NET 6/7REST APIsAzureWebhooks
Nov 2021 – Jun 2022Athens, GR

Junior .NET Developer

SSPC – Software Solution P.C.

Built custom ERP solutions for clients using Epsilonnet Pylon. Developed MVC web apps in C# with Razor and Entity Framework, authored complex T-SQL reports visualized in Power BI, and handled direct client delivery.

C# / WinFormsASP.NET MVCT-SQLPower BI

Tech stack

Languages & Frameworks
C#
ASP.NET Core (MVC, Web API)
.NET 4.8 / 6 / 7 / 8 / 9
Razor Pages
Entity Framework
Data & Cloud
MSSQL / T-SQL
Azure (VMs, Repos, Portal)
Power BI
REST APIs & Webhooks
JSON / OData
Architecture & Practices
Domain-Driven Design (DDD)
Clean Architecture
OOP
Git / GitHub / Azure Repos
Agile / Scrum

Background

2020 – 2021

Full Stack C# Developer

PeopleCert Education

2011 – 2013

Engineer's Degree, Automotive Technology

IEK Athens

What I'm into

Gaming

Winter ritual. Immersive worlds and strategy games, the kind that demand focus and reward patience.

Football

Summer staple. Playing and following the game, team dynamics on the pitch mirror those in engineering.

Reading

Mostly finance and investing books, understanding markets, human behaviour, global liquidity and the long patient game.

Finance & Trading

Active study of markets, macro trends, and trading psychology. Discipline, systems thinking, emotion control and risk management. Principles that have leveled my mental game.