Andrii K.

Full-Stack JavaScript Engineer | Scalable Web Apps • Real-Time Systems • Cloud-Ready Solutions I’m Andrii, a Tier-4 full-stack JavaScript developer trusted by Radency, a boutique engineering firm known for partner-led delivery and AI-augmented workflows. Over the last three years I’ve shipped production-ready platforms for industries ranging from drone mapping and HR tech to telemedicine and real-time communication bots. ✅ Modern Web & Mobile: React, Vue, TypeScript, Redux/Zustand, Tailwind, Storybook, Capacitor. ✅ Robust Back-End APIs: Node.js, Nest.js, Express, GraphQL, PostgreSQL/TypeORM, MongoDB, Prisma. ✅ Cloud & DevOps: AWS, GCP, Docker, Auth0/Keycloak, CI/CD. ✅ Real-Time & Secure: Socket.io, Passport.js, JWT, OpenAPI. Recent Highlights: Drone-Managing Platform – Built a cross-platform system to control mapping drones for agriculture and mining, with centimeter-level precision and automated timber-volume calculations. HR Management Suite – Delivered a multi-module HRIS/ATS/Performance platform combining complex workflows, role-based access, and GraphQL APIs. Telemedicine Platform – Implemented video consultations, AI-powered note summaries, EPIC integration, and scheduling automation. Discord Raffle Bot – Created a multilingual, high-availability bot with Redis-backed entry validation and GitHub Actions CI/CD. Fluent in English, I bring clear communication, problem-solving mindset, and production discipline. Whether you need a dedicated engineer to extend your SaaS team or to deliver a full-cycle feature build, I focus on scalable architecture, clean code, and rapid iteration.