Hernan Cianfagna
Co-Founder at Sirawit Solutions Limited
Hat Yai, Thailand
Summary
🤩
Rockstar🎓
Top SchoolHernan Cianfagna is a seasoned software engineer and co-founder based in Hat Yai, Thailand, with two decades-plus of IT experience focused on databases, security, and large-scale production systems. He has held senior roles at CrateDB, Dell, Wonga and OECD, combining hands-on SQL/NoSQL expertise, performance tuning and security hardening across multi-terabyte, high-throughput environments. At CrateDB he contributed technical documentation for a widely used distributed SQL database, clarifying complex features like nested arrays, regex operators and transaction semantics—an indication of his attention to detail and ability to make deep technical topics accessible. His background spans both product and operations—leading DR and compliance efforts, building automation for releases, and coaching small DBA teams—so he moves fluidly between architecture, troubleshooting and developer-facing communication. He pairs an MSc in Software Engineering from Oxford with practical experience in encryption, incident response and penetration testing, bringing an unusually broad mix of academic rigor and security-minded engineering. Colleagues know him for solving millisecond-level performance problems while also improving documentation and processes that scale.
3 years of coding experience
12 years of employment as a software developer
Master of Science (MSc) Software Engineering, Master of Science (MSc) Software Engineering at University of OxfordComputing, Computing at Hogar Naval Stella Maris (Buenos Aires)Informatics Engineering, Informatics Engineering at Sapienza Università di RomaRagioniere perito commerciale e programmatore Accounting and Programming, Ragioniere perito commerciale e programmatore Accounting and Programming at Paolini-Cassiano Technical Institute (Imola - Italy)Level 6 Professional Graduate Diploma Information Technology, Level 6 Professional Graduate Diploma Information Technology at BCS, The Chartered Institute for IT
Spanish, Italian, French, English
Github Skills (7)
documentation10
technical-writing10
sql9
databases8
database8
big-data5
distributed-database4
Programming languages (11)
Github contributions (5)
crate/crate
Oct 2022 - Jan 2023
CrateDB is a distributed and scalable SQL database for storing and analyzing massive amounts of data in near real-time, even with complex queries. It is PostgreSQL-compatible, and based on Lucene.
Role in this project:
Technical Writer
Technical WriterContributions:64 reviews, 37 commits, 31 PRs in 3 months
Contributions summary:Hernan primarily contributed to the repository by updating and improving documentation. Their commits focused on clarifying existing documentation, explaining how to use features such as nested arrays, and correcting errors. The user's work includes documenting features around SQL statements like `BEGIN`, `END`, and `COMMIT`, and also addressing inconsistencies related to shard allocation and other configurations, and adding documentation around the use of the regex operators and full text search.
dbmscratedbon-toptime-seriesindustrial-iot
hlcianfagna/marquez
Nov 2022 - Jun 2024
Collect, aggregate, and visualize a data ecosystem's metadata
Contributions:2 pushes in 1 year 7 months
collectdatavisualizeaggregateecosystem
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