Olivier Coanet - Principal Software Engineer at ABC arbitrage

Olivier Coanet

Principal Software Engineer at ABC arbitrage

Paris, Ile-de-France

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Summary

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Rockstar

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Top School

Olivier Coanet is a Principal Software Engineer based in Paris with 12+ years building high-performance .NET systems, distributed architectures, and automated trading platforms. He progressed from UI work on high-speed rail measurement to technical lead and project manager roles, ultimately driving architecture and delivery at ABC arbitrage. Deeply pragmatic, he champions DDD, event sourcing, TDD and performance-oriented multithreading while introducing CI, DI and ORM practices early in teams. An active open-source contributor, his improvements to projects like the DataStax C# Cassandra driver, Moq and Disruptor-net show a focus on correctness, parameter-capturing ergonomics and latency-sensitive refactors. He blends hands-on coding with leadership across teams of 4–20 engineers and routinely converts complex financial and risk needs into robust, testable systems. Colleagues know him for turning skeptical teams onto better technology choices and for sustained, measurable improvements in reliability and performance.

12 years of coding experience

11 years of employment as a software developer

Master of Science - MS Computer Software Engineering, Master of Science - MS Computer Software Engineering at ETNA, école d'alternance en informatique

DUT Informatique, DUT Informatique at Université Paris-Saclay

Stackoverflow

Stats

1,007reputation

22kreached

5answers

5questions

Github Skills (27)

unit-testing10

multithreading10

cassandra10

net10

dotnet10

performance-testing10

asp-net10

mocking10

dotnet-core10

csharp10

cassandra-database10

concurrency10

data-structure9

software-design9

data-structures9

Programming languages (4)

C#JavaC++C

Github contributions (5)

disruptor-net/Disruptor-net

Aug 2016 - Nov 2022

Port of LMAX Disruptor to .NET

Role in this project:

Back-end Developer

Contributions:20 releases, 3 reviews, 326 commits in 6 years 5 months

Contributions summary:Olivier focused on refactoring and optimizing the performance tests within the .NET implementation of the LMAX Disruptor. The changes included cleaning up and refactoring performance test code, modifying components such as the `PingPingQueueLatencyTest`, `FizzBuzzQueueProcessor`, and `FunctionQueueProcessor`, and modifying the code for improved stability. The user also supported various wait strategies and worked on adding tests to ensure that these features are working.

dotnetlmax

devlooped/moq

Jun 2016 - Jun 2019

The most popular and friendly mocking framework for .NET

Role in this project:

Back-end Developer

Contributions:9 commits, 2 PRs, 21 comments in 3 years

Contributions summary:Olivier primarily contributed to the Moq framework, focusing on enhancing parameter capturing capabilities. Their work involved adding new features like `CaptureMatch` and `Capture.In`, improving the flexibility of capturing parameters during mock setup. Additionally, they refactored and improved existing code related to argument matching and setup evaluation. The user's changes indicate a focus on improving the core functionality and maintainability of the mocking framework.

dotnetmocking

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