Stepanchenko Alexander
Full-stack Web Engineer
Intro
What I build
I am a full-stack web engineer with 15+ years of experience building products for desktop and mobile web. I work across frontend architecture, Node.js backends, developer tooling, infrastructure and Web3 products. I am comfortable leading teams, working independently, and turning fuzzy product ideas into shipped, maintained software.
Expertise
Practical product engineering
01
JavaScript & TypeScript
Deep experience with modern JavaScript, browser APIs, application architecture and performance. I build with React, vanilla JavaScript, IndexedDB, Electron, Cordova, Vite, Webpack and PWA patterns when they fit the product.
02
Frontend Systems
Strong HTML and CSS foundation, responsive interfaces, design systems, progressive enhancement and graceful degradation. I care about interfaces that are fast, accessible and maintainable.
03
Node.js
Backend services and APIs with Fastify, Express, Socket.IO, PostgreSQL, MongoDB, Redis, RabbitMQ and background jobs.
04
DevOps
Linux, Docker, Kubernetes, nginx, GitLab CI and GitHub Actions. I set up delivery pipelines and production environments that teams can actually live with.
05
Advanced CSS
Animation, responsive layouts, visual polish, mobile browser quirks and frontend performance optimization.
06
Mobile Web Apps
Cross-platform web apps, PWA, Telegram Mini Apps and Cordova-based mobile applications.
07
Web3
DeFi products, dapps, IPFS, Ethereum, Solana and smart-contract integrations.
Skills
Frontend architecture
Node.js backend
PWA, Telegram Mini Apps, Electron
DevEx & DevOps
Web3 / DeFi
Solana, Rust
Experience
2022 – now
Choise.com
Team Lead
Remote
Lead the development of DeFi products across frontend, backend and blockchain integrations. Work on product architecture, team delivery, production stability and developer workflows.
2020 – 2022
X5
Developer Experience Engineer
Remote
Built internal developer experience tools for microservice versioning, release automation and personal development environment setup.
2018 – 2020
DaoBET
Full-stack Developer
Remote
Built protocol MVPs, blockchain-facing web applications and internal tooling for the DAO.Casino platform and the DAOBet blockchain.
2015 – 2017.03
flexbe.com
Full-stack Developer
Kaliningrad, Russia
Built product features, backend integrations and a Cordova-based mobile app for a landing page platform.
2009 – 2015
newkaliningrad.ru
Team Lead
Kaliningrad, Russia
Led development for a regional media portal with classifieds, ticket sales, news, events and community features.
2007 – 2009
Freelance
Frontend Developer
Remote
Built websites, interfaces and custom web applications for early-stage clients and local businesses.
Education
2007 – 2011
Kaliningrad State Technical University
Bachelor of Computer Science
Kaliningrad
2004 – 2007
Baltic Technical College
Kaliningrad, Russia