Alexander Belko

Background

About Alexander Belko

I am a Senior Full-stack Engineer with 15 years of experience delivering secure, scalable, and cloud-native applications. My expertise spans Frontend, Backend, Python services, Cloud, DevOps, and application security, with a strong focus on building high-performance systems that meet modern business needs. Core Skills & Technologies - Frontend: JavaScript, TypeScript, React, Vite, TailwindCSS, shadcn/ui, HTML/CSS - Backend: Node.js, Fastify, Express, Python (FastAPI, Flask), REST APIs, Prisma ORM - Databases: PostgreSQL, Redis, MySQL - Cloud & DevOps: AWS, Docker, Kubernetes, Terraform, GitHub Actions, GitLab CI/CD - Security: Authentication & Authorization (OAuth2, JWT, 2FA), API hardening, secure architecture - AI & Data: Python services for automation, data categorization, visualization, and OCR/ML integrations I specialize in end-to-end software development — from database schema design and API development to cloud infrastructure, DevOps pipelines, and security-first architecture. My recent focus includes AI-powered features (data categorization, visualization, OCR) and building secure, scalable platforms for finance and IoT domains.