Aleksei Zakhlestin
Соучредитель at Equilibrium Development
Lisbon, Portugal
Summary
👤
Senior🎓
Top SchoolAleksei Zakhlestin is a seasoned software leader and co-founder with 19 years of experience building resilient web platforms and developer tools, currently based in Lisbon. He combines deep hands-on expertise in backend engineering, semantic technologies (RDF/SPARQL) and data modeling with long-running CTO experience leading migrations, infrastructure modernization and privacy-aware systems. Aleksei has repeatedly delivered low-disruption transformations—moving high-traffic UGC platforms and volunteer social networks through major stack shifts (Ember→React, Redis→Postgres, AWS→self-hosted) while keeping users unaffected. An active open-source contributor, he has improved well-known libraries for RDF and OpenID (adding JSON-LD support and SPARQLWrapper fixes), showing a focus on interoperability and code quality. He favors analytical, sustainable solutions over quick fixes, introducing scalable messaging, monitoring and automated deployment practices across teams. Unusually, he pairs deep C/C++ extension work for PHP with modern TypeScript and Rust tooling, bridging legacy systems and cutting-edge stacks.
19 years of coding experience
15 years of employment as a software developer
Information Systems in the Economics, Information Systems in the Economics at Moscow Technical University of Communications and Informatics (MTUCI)
English, Russian
Github Skills (10)
rdf10
debug10
php10
sparql10
wrapper10
openid10
python10
unit-testing9
code-optimization9
pep8
Programming languages (20)
Github contributions (5)
easyrdf/easyrdf
Mar 2013 - Apr 2015
EasyRdf is a PHP library designed to make it easy to consume and produce RDF.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:162 commits, 5 PRs, 10 pushes in 2 years
Contributions summary:Aleksei primarily contributed to the EasyRdf library by enhancing the Turtle serializer. Their work involved refactoring and extracting code into separate methods, such as `serialiseLiteral()` and `encodeResourceIRI()`. The user also implemented a JSON-LD serialization routine and test, indicating their focus on expanding the library's support for different RDF serialization formats, as well as fixing bugs related to boolean and decimal serialization.
linked-dataeasyrdfphpconsumesparql
RDFLib/sparqlwrapper
Nov 2013 - Aug 2014
A wrapper for a remote SPARQL endpoint
Role in this project:Back-end Developer
Back-end DeveloperContributions:63 commits, 4 comments in 9 months
Contributions summary:Aleksei primarily contributed to the SPARQLWrapper library by addressing issues related to query handling and code quality. They fixed a bug where `setQuery()` incorrectly implied `resetQuery()`. The user also made improvements to the code's PEP8 compliance and removed code duplication, thereby enhancing code readability and maintainability. Additionally, the user implemented support for JSON-LD output format.
endpoint-sparqlpythonpypisparqlsparql-endpoints
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