Mark Thompson
Mark Thompson
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Mark Thompson is a hands-on software engineer and Technical Director with over twenty years’ experience building secure, large-scale systems across defence, finance, industrial IoT, and clean energy.
Throughout his career, he has maintained a strong interest in cryptography and secure communications, with a practical focus on how encryption is used in real-world systems.
At QGEMS Energy, Mark helps shape the technical direction of the platform, working closely with engineering teams on quantum-proof encryption, AI-driven forecasting, and distributed energy optimisation. His work is focused on building secure, cloud-native energy systems that support sustainability and meaningful carbon reduction, ensuring that sensitive energy and infrastructure data remains trustworthy and protected as platforms scale.
Mark is a keen believer in technology being used for good and is a strong advocate for developer collaboration and knowledge sharing. He has supported charities by bringing IT expertise to organisations such as The Calvert Trust, and is currently a Trustee within the Scout Association, helping to ensure technology is used responsibly, securely, and for positive social impact.
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Encryption in a Post Quantum World
Quantum computing is here, it is time to protect our code. Todays standards have served the world for decades. Not any more. It’s time to discuss Post Quantum Encryption and how we as developers can use it, without panic, hype, or heavy maths.
This talk is a friendly, practical introduction to quantum-proof encryption, aimed at C# and .NET developers. We’ll focus on how encryption is used in real applications, not the maths behind it, and everything is explained in terms of practical use.
We’ll start by looking at why encryption needs to evolve, including how Shor’s Algorithm fundamentally breaks widely used asymmetric encryption standards like RSA and ECC, rendering them unsafe in a quantum world. We’ll then revisit symmetric and asymmetric encryption, clarifying what remains safe and what needs to change.
From there, we’ll get hands-on and build simple, real C# examples to encrypt data, sign it, and verify it code you can take away and use straight away.
This is a relaxed, code-first session designed to make modern encryption feel approachable, useful, and achievable. You don’t need to be a mathematician or a Crypto expert. There will be no slides of equations.
DDD North 2026 Sessionize Event
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