João Sousa Software Engineer

Based in Porto · shipping since 2017

João Sousa Senior .NET engineer for cloud-native backends

I build APIs and data platforms that stay fast under pressure — the quiet work that keeps production calm.

See case studies

Or email me · LinkedIn

30+

Microservices migrated to .NET 10

~50ms

Recommendation response time

40+

Services across a live ecosystem

JoaoSousa.cs 
public class JoaoSousa : SoftwareEngineer
{
    public string Name { get; } = "João Sousa";
    public string Role { get; } = "Senior Software Engineer";
    public string Location { get; } = "Porto, Portugal";
    public string Focus { get; } = "Cloud-native backends & APIs";

    public string[] Stack { get; } =
    [
        ".NET", "WebAPI", "Azure",
        "SQL", "MongoDB", "Cassandra",
        "Redis", "Kafka", "RabbitMQ",
        "Docker", "Kubernetes", "Jenkins"
    ];

    public string[] Industries { get; } =
    [
        "AI", "Fashion", "Banking"
    ];

    public bool PlaysFutsal { get; } = true;
    public string[] AiTools { get; } =
    [
        "Cursor", "Copilot", "Gemini"
    ];
    public int YearsShipping { get; } = DateTime.UtcNow.Year - 2017;

    public void Build() =>
        Deliver("scalable systems");
}

Case studies

Impact, not just titles

Defined.ai · 2024–Present

.NET 10 migration & GDPR-ready platform

30+ services migrated to .NET 10, architecture across 40+ microservices, and a GDPR solution in a complex Azure ecosystem.

Read case study →

Farfetch · 2020–2024

Recommendations at ~50ms

Recommendation services at ~50ms with high throughput — polyglot data, Kafka, and close collaboration with Data Science / ML.

Read case study →

About

Building things that people rely on

Since 2017 I’ve shipped backends across banking (Natixis), fashion recommendations (Farfetch), and AI infrastructure (Defined.ai) — focused on systems that stay fast and calm in production.

Outside work: futsal, the gym, and a lot of rock — more about that.

Full experience Case studies
João Sousa