Calin Stefanescu
Co-founder & Lead Developer ZZZ Solutions
Bucharest, Romania
Summary
👤
Senior🎓
Top SchoolCalin Stefanescu is a seasoned software engineer and entrepreneur with over a decade of experience building backend systems and customer-facing platforms, particularly in e-commerce. As co-founder and Lead Developer at ZZZ Solutions he’s launching an AI-driven chatbot SaaS that brings natural language product search, margin-aware recommendations, and seamless checkout to WooCommerce and beyond. His background spans secure payments, decentralized APIs, messaging infrastructures, and desktop/mobile apps, blending Node.js/TypeScript, PostgreSQL, Docker, and OpenAI integrations. He’s delivered high-availability systems for billing, messaging, and energy contracting platforms and has run a DTC wellness brand, giving him product and go-to-market perspective alongside engineering leadership. Known for pragmatic, robust architectures, he often focuses on measurable business impact—like optimizing recommendation logic for retailer margins rather than just accuracy. Based in Bucharest, Calin pairs hands-on development with startup strategy to turn ML-driven ideas into production-ready solutions.
13 years of coding experience
7 years of employment as a software developer
Highschool diploma, Informatics, Highschool diploma, Informatics at Colegiul Tehnic EnergeticInformatics, Informatics at Universitatea „Spiru Haret” din București
English
Stackoverflow
15reputation
3kreached
1answer
3questions
Github Skills (28)
measurement10
measurement-protocol10
google-analytics10
nodejs9
admob9
mobile-ads8
ads8
google-mobile-ads8
analytics8
electron7
google7
sdk7
macos6
mgo6
go6
Programming languages (3)
Github contributions (5)
vacu/electron-google-analytics
Feb 2017 - Aug 2022
Node/Electron module for Google Analytics Measurement Protocol.
Contributions:8 releases, 111 commits, 18 PRs in 5 years 7 months
analyticselectronelectron-modulemeasurementmeasurement-protocol
vacu/python-imageResize
Nov 2012 - Jul 2013
Contributions:2 commits in 7 months
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