Sergei Kabuldzhanov is a Senior Software Engineer with six years of experience building secure, high-throughput web applications and improving delivery pipelines from Belgrade. He has led frontend and backend work across fintech and SaaS—shipping a customer-facing SPA, integrating Plaid and Equifax to halve credit application processing time, and automating CI/CD with GitHub Actions, Cypress, and Jest. Sergei repeatedly optimized test suites and pipelines (cutting CI run times by up to 75%) and built observability and internal tooling on AWS to surface critical business metrics. He combines hands-on coding with mentoring experience from BloomTech and a background in technical writing and UI prototyping, which helps him bridge engineering, product, and stakeholder communication. Not obvious at first glance: his education started in nuclear physics, reflecting a rigorous analytical foundation that informs his pragmatic approach to complex engineering problems.
6 years of coding experience
5 years of employment as a software developer
Student Full Stack Web Developer, Student Full Stack Web Developer at BloomTech
Introduction to Computer Science and Programming Using Python, Introduction to Computer Science and Programming Using Python at edX
Sophomore Applied nuclear physics and nuclear physics theory, Sophomore Applied nuclear physics and nuclear physics theory at National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Monolith backend application for the Issue Tracker Project.
Contributions:1 review, 11 PRs, 61 pushes in 3 months
trackerexpressproject-trackerbackendnodejs
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Sergei Kabuldzhanov - Senior Software Engineer at Toloka