John Greenan
Director at Aquis Technologies
St Albans, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolJohn Greenan is a director-level electronic trading strategist and technologist with over two decades of cross-asset experience designing trading, post-trade and digital asset workflows for buy-side, sell-side, exchanges and vendors. A recognised FIX thought leader and member of the FIX Governance Board, he helped drive FIX Orchestra and the move to continuous 24x7 FIX markets while architecting DvP workflows and margin models for institutional digital assets. He combines hands-on full-stack development (JSON, FIX tag=value, SBE/FIXP/MQTT) with commercial acumen from M&A due diligence, product and CTO roles across Europe, Asia and the US. John blends an academic grounding in Economics with pragmatic delivery—consistently shipping complex, on-time, on-budget projects—and maintains deep C-level vendor and broker relationships worldwide. An open-source advocate and occasional automotive product owner, he is as comfortable building protocol implementations as advising PE/VC and leading standards committees.
11 years of coding experience
25 years of employment as a software developer
Bachelor of Arts (BA) Economics, Bachelor of Arts (BA) Economics at University of Nottingham
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (51)
presentation-layer10
quickfix9
xml-schema9
fixprotocol9
financial-markets8
readable8
finance8
cryptocurrency8
java8
encoder-decoder8
selenium7
trading7
dsl7
javascript7
quickfixj7
Programming languages (10)
Github contributions (5)
JohnGreenan/8_ExcelVBE
Apr 2015 - Oct 2023
Excel VBA code to list RTD servers
Contributions:1 push, 1 branch in 8 years 8 months
excelvba
AlignmentSystems/shadow
Sep 2020 - Jul 2023
Gradle plugin to create fat/uber JARs, apply file transforms, and relocate packages for applications and libraries. Gradle version of Maven's Shade plugin.
Contributions:2 PRs, 3 pushes in 2 years 10 months
maven-pluginmavengradleshade-pluginfat
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