Hayden Donnelly
Software Engineer at Dexian
São Paulo, Brazil
Summary
👤
Senior🎓
Top SchoolHayden Donnelly is a software engineer with a decade of professional experience who transitioned from a medical career to backend-focused software development, driven by a genuine passion for coding. Proficient primarily in Python, with hands-on experience in C#/ASP.NET, Java/Spring Boot, JavaScript, and Go, he has built production systems in highly regulated environments and delivered a from-scratch solution for a Fortune 500 client in just 12 weeks. He maintains an NZ-based contracting company, works remotely from São Paulo, and is open to on-site roles there. Hayden has contributed significant open-source work for the Bitcoin SV ecosystem (including ElectrumSV and related server infrastructure) and has a strong background in microservices, Kafka/protobuf pipelines, and secure, auditable architectures. Unusually, he pairs clinical training and wet-lab research experience with rigorous software engineering practices—bringing analytical discipline from medicine to complex distributed systems.
10 years of coding experience
10 years of employment as a software developer
MBChB, Bachelor of Medicine and Bachelor of Surgery, MBChB, Bachelor of Medicine and Bachelor of Surgery at University of OtagoPalmerston North Boys' High SchoolHigh School Accelerated Program, High School Accelerated Program at Massey University
English, Portuguese
Stackoverflow
142reputation
58kreached
4answers
4questions
Github Skills (179)
cryptocurrency10
http-client10
client-server10
aiohttp10
crypto10
wallet10
async10
bitcoinsv10
python-interface10
bitcoin10
http-server10
wsl210
boilerplate10
netbsd9
python9
Programming languages (11)
Github contributions (5)
AustEcon/polyglot
May 2019 - Oct 2020
Bitcoin protocols made easy. Documentation:
Contributions:3 releases, 9 reviews, 52 commits in 1 year 5 months
cryptocurrencybitcoin-protocolsbitcoinprotocols
AustEcon/bitsv
Jan 2019 - Jan 2021
BitSV: Bitcoin made easy. Documentation:
Contributions:19 releases, 13 reviews, 157 commits in 2 years
cryptocryptocurrencypython3bitcoinbsv
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