João Sousa Software Engineer

Hi, I’m João Sousa, a .NET engineer

Senior .NET engineer focused on cloud-native backends, APIs, and data platforms.

I design and deliver systems that need to scale — from banking back-offices to fashion recommendations and AI infrastructure — across architecture, delivery, integration, and support.

Based in Porto, with nearly a decade of experience in multicultural, distributed teams.

See case studies Email me

Find me on LinkedIn or email.

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 int YearsShipping { get; } = DateTime.UtcNow.Year - 2017;

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

30+

Microservices migrated to .NET 10

~50ms

Recommendation response time

40+

Services across a live ecosystem

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

I’ve been writing software since 2017 — starting at Natixis, where I learned what it means to ship carefully in banking: clear code, solid data, and systems that hold up when the stakes are real.

At Farfetch I moved into large-scale backends for recommendations, working side by side with Data Science and ML. That taught me how to keep services fast and dependable while the product — and the models behind it — kept evolving.

Today, as a Senior Software Engineer at Defined.ai, I help shape cloud platforms on Azure: microservices, data privacy, and the day-to-day craft of making complex systems simpler for the people who build and run them. I also mentor juniors — because good engineering is a team sport.

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

Full experience Case studies
João Sousa