Senior Full-Stack JavaScript Engineer with 10+ years of experience building and scaling production-grade web and mobile applications. I specialize in end-to-end product development - from system architecture and API design to polished user interfaces and cloud infrastructure. I’ve worked on projects ranging from early-stage startups to complex, high-load systems, delivering reliable solutions under evolving requirements. Comfortable owning features from idea to production, collaborating with cross-functional teams, and making pragmatic technical decisions. Known for fast problem-solving, clear communication, and adapting quickly to new domains and constraints. Core expertise Frontend: JavaScript (ES6+), TypeScript, React (Hooks), Redux / Redux-Saga, RxJS, Tailwind CSS, Styled Components Backend: Node.js, Express, Koa, Adonis, GraphQL (Apollo), Prisma Databases: PostgreSQL, MongoDB, Redis, ClickHouse Mobile: React Native, Expo Testing: Jest, Playwright DevOps & Cloud: Docker, Kubernetes, Terraform, AWS (EC2, ECS, ECR, S3, EB) Web3: Solidity, OpenZeppelin, Hardhat, ethers.js CMS: DatoCMS, GhostCMS Integrations & APIs Maps (Mapbox, Google Maps), Payments (Stripe), Weather, Shopify, Meta API, Jira, and other third-party services.