Jan Gaspar
Senior Software Engineer at Onyx Capital Group
London, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolJan Gaspar is a Senior Software Engineer based in London with 7 years of focused experience in low-latency, finance-facing systems and a long background in Scala, Rust, Java and C++. He has progressed from early API and integration work through extensive contracting across major banks and hedge firms to senior roles at GSR and Onyx Capital Group, often working in equity, FX and derivatives domains. Jan blends quantitative developer instincts with pragmatic engineering, building production-grade trading and risk infrastructure where correctness and performance matter. He frequently operates at the intersection of research and delivery—translating complex financial models into robust, maintainable services. Colloquially curious and technically versatile, he brings institutional pedigree from firms like Morgan Stanley, Credit Suisse and Brevan Howard while embracing modern languages such as Rust.
7 years of coding experience
23 years of employment as a software developer
Ing. Telecommunications, Ing. Telecommunications at Slovenská technická univerzita v Bratislave
Github Skills (28)
gatling10
java9
performance-testing9
kotlin9
loadtest9
sequential9
load-testing9
stream8
scala8
cicd8
javascript8
asynchronous8
testing8
netty8
akka7
Programming languages (2)
Github contributions (5)
jano7/executor
Dec 2019 - Oct 2020
Java Key Sequential Executor
Contributions:7 releases, 10 commits, 5 PRs in 10 months
javasequential
jano7/covid-19
May 2020 - May 2020
Contributions:10 pushes, 1 branch in 1 day
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