namespace Stirling.Scotland;
public sealed class AntonioCosta : SeniorDotNetEngineer

ANTONIO COSTA

// Senior .NET Engineer · Profile sheet

19 years building and modernising systems on the Microsoft stack. Backend first, full stack when it is needed, and happiest when something that was fragile ends up boring and reliable.

#region01Profile

fullName: "António Manuel Ferreira Costa"
knownAs: "Antonio Costa"
role: "Senior .NET Backend Engineer"
basedIn: "Stirling, Scotland (UK)"
languages: "Portuguese (native) · English (fluent)"
availability: "Immediate · UK remote or Central Belt hybrid"
contact: "hello@antoniocosta.co.uk"

#region02Education & certifications

Licentiate Degree in Computer EngineeringBSc equivalent · Universidade de Lisboa · 2002 – 2007

Microsoft Certified: .NET Application Development Foundation (70-536)
Domain-Driven Design workshop (event storming, ubiquitous language)
Learning Docker · LinkedIn, Dec 2025

#region04What I do

Backend design and REST APIs
Third-party integrations (OTAs, channel managers, carriers)
Payment provider integration, owned end to end
Legacy modernisation, .NET Framework to .NET Core
Event-driven systems, messaging, CQRS
Code review, mentoring, small-team leadership
AI-assisted engineering with Claude Code

#region03Stack

C#
.NET 8
ASP.NET Web API
EF Core
SQL Server
Azure Functions
Service Bus
RabbitMQ
Docker
Blazor
.NET MAUI
IdentityServer4
Claude Code

#region05Timelinegit log --oneline

2007First development role, WeDo Consulting (Portugal)
2008Banking platforms, Accenture / Infosistema
2016Green Man Gaming, Senior Engineer and Team Lead
2018Spotlight, CRM APIs and Dynamics 365
2021ByBox, .NET MAUI and distributed messaging
2023Aqovia, Azure serverless
2024Mews, hospitality integrations and microservices

// 19 years in the Microsoft ecosystem

#region06Domains