John Dexter
Director at JDXSolutions Ltd
England, United Kingdom
Summary
👤
SeniorJohn Dexter is a director and founder of JDXSolutions Ltd with eight years of hands-on experience delivering software architecture, consultancy, and small development teams focused on surgical simulation, medical visualization, and scientific applications. He began his career in video games before moving into transport and financial sectors, bringing a game-engine mindset to complex, real-time systems. John combines entrepreneurial leadership with deep backend engineering skills, evidenced by contributions to the ExchangeSharp .NET library where he improved Kraken exchange WebSocket candle handling, order book merging, and checksum support. He builds web-based, business, and multiplayer systems that emphasize accuracy and performance for mission-critical domains. Based in England, he is comfortable bridging research-grade visualization needs with pragmatic commercial software delivery.
8 years of coding experience
Github Skills (12)
cryptocurrency10
net10
exchange10
asp-net10
exchange-web-services10
dotnet10
websocket10
api10
csharp10
apidoc10
dotnet-core10
kraken10
Programming languages (9)
Github contributions (5)
DigitalRuby/ExchangeSharp
Jun 2021 - Aug 2021
ExchangeSharp is a powerful, fast and easy to use .NET/C# API for interfacing with many crypto currency exchanges. REST and web sockets are supported.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:6 commits, 6 PRs, 20 comments in 2 months
Contributions summary:John primarily focused on enhancing the Kraken exchange API integration, adding WebSocket candle functionality and addressing issues in the order book updates. They implemented the `OnGetCandlesWebSocketAsync` method for Kraken, including handling the API's unique candle update format. Further contributions included improving symbol name translation and error detection within the Kraken ticker retrieval process, as well as adding checksum support and a merging strategy for order book updates to improve the accuracy and efficiency of the library's data handling.
exchangeweb-socketsbittrex-apibitstamp-apiethereum
jdx-john/ExchangeSharp
Jun 2021 - Jun 2021
ExchangeSharp is a powerful, fast and easy to use .NET/C# API for interfacing with many crypto currency exchanges. REST and web sockets are supported.
Contributions:4 PRs, 6 pushes, 4 branches in 1 day
exchangeweb-socketsexchangesc-apigemini
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