Alexander Beletsky
Senior Product Engineer at Bluefish
Berlin, Germany
Summary
👤
Senior🎓
Top SchoolAlexander Beletsky is a Senior Product Engineer based in Berlin with over 15 years of hands-on experience building distributed systems, web apps, and APIs across startups and scaleups. He combines deep Node.js, TypeScript, and GraphQL expertise with proven AWS and DigitalOcean infrastructure skills to design resilient, microservices-driven architectures. As a former CTO and lead architect, he has led engineering practices, shipping products from prototype to production while balancing developer experience and operational robustness. He contributes to open-source projects—helping bridge React into Angular and enhancing Node.js stream utilities—demonstrating a pragmatic approach to interoperability and tooling. His background includes C++ systems work and a PhD focus in computer and information systems security, giving him an uncommon mix of low-level rigor and modern full-stack product sensibility. Colleagues know him for turning complex technical constraints into pragmatic, well-documented solutions that scale.
15 years of coding experience
23 years of employment as a software developer
Doctor of Philosophy (Ph.D.) Computer and Information Systems Security/Information Assurance, Doctor of Philosophy (Ph.D.) Computer and Information Systems Security/Information Assurance at National University «Kyiv Aviation Institute»
English, Russian, Ukrainian, startup, Ukrainian
Stackoverflow
19,631reputation
1.8mreached
269answers
66questions
tdd
top-5%
model-view-controller
top-5%
redux
top-5%
unit-testing
top-1%
junit
top-5%
teamcity
top-5%
Github Skills (29)
unit-testing10
javascript10
lib10
stream-processing10
nodejs10
functional-programming10
react10
angular10
msbuild9
testing9
teamcity9
controller9
aspnet-web-api9
redux9
amd9
Programming languages (13)
Github contributions (5)
caolan/highland
May 2014 - Nov 2014
High-level streams library for Node.js and the browser
Role in this project:
Back-end Developer
Back-end DeveloperContributions:10 commits, 2 comments in 6 months
Contributions summary:Alexander primarily focused on enhancing the `highland` library's functionality. Their contributions included implementing the `pack` and `drop` functions, which manipulate data streams, and refactoring existing code. They also addressed error handling, and renamed the `pack` function to `batch`. Additionally, the user updated documentation and test cases.
browsernode-jsjavascripthigh-levelstreams
ngReact/ngReact
Nov 2014 - Nov 2014
Use React Components in Angular
Role in this project:Front-end Developer
Front-end DeveloperContributions:7 commits in 11 days
Contributions summary:Alexander primarily contributed to integrating React components within an Angular application. Their work focused on creating shims for browser compatibility, building a minified version, and supporting different module loading environments (CommonJS, AMD, and vanilla). The user's commits also involved refactoring and adapting the codebase for better integration and functionality with Angular. They also updated documentation.
data-gridreactreact-useangularreact-components
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.