Full-Stack Engineer · System Architect

I don't just write code — I ship systems that scale.

Problem Solver who turns complex requirements into reliable, high-availability systems. From zero to production — solo or with a team.

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NestJS · Next.js · TypeScriptPostgreSQL · Docker · AWSBased in South Korea (E-7)
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About Me

E-7 Visa · South Korea · High-Availability Systems

Delivering Senior-Level Impact through Business-Driven Engineering and AI Efficiency.

I am a Strong Middle Full-Stack Engineer based in South Korea, holding an E-7 (Professional Worker) visa. My approach to software development is rooted in a deep understanding of the intersection between IT infrastructure and business profitability.

I don't just build features; I solve business bottlenecks. By leveraging AI-assisted development pipelines, I've mastered the art of high-efficiency engineering.

A testament to this is my recent solo-led Multi-tenant Medical ERP project: I architected, developed, and deployed the entire production-ready system in just 3 months—a timeline that typically requires a much larger team.

My focus is on drastically reducing manual input and human error. In my last project, I automated 80% of administrative tasks through AI-powered OCR and smart workflow orchestration.

I take full ownership of the lifecycle—from NestJS backend architecture to Dockerized deployment and Nginx security hardening. I value the precision of Korean business culture and prioritize ROI in every line of code.

I build observable, maintainable, and scalable systems designed for real-world impact. If you need an engineer who thinks like a business owner and executes with modern AI-driven speed, let's connect.

Profile

Professional Resume

Impact-driven career timeline

  • Full-Stack Engineer

    Current

    Multi-Tenant Clinic ERP (SaaS) · Solo Technical Lead

    • →Architected and delivered a production-grade multi-tenant ERP platform for medical clinics and suppliers (B2B/B2C), designed for scalability, strict tenant isolation, and operational resilience.
    • →Led the entire lifecycle solo — from system architecture and database schema design (50+ tables) to 100+ REST APIs, frontend applications (Next.js 14), and production deployment (Docker, AWS EC2, Nginx, VPS).
    • →Implemented tenant-aware architecture (RLS strategy), JWT authentication, and role-based access control (Owner/Admin/Manager/Clerk) ensuring secure data isolation across tenants.
    • →Integrated Google Cloud Vision OCR to automate document processing and reduced manual administrative workflows by ~80%.
    • →Built real-time observability layer: health checks, slow-query detection, database size monitoring, and Telegram-based production alerting for proactive issue handling.
    • →Optimized database performance with composite indexing, connection pooling (pgBouncer), and ACID transaction handling for financial-grade consistency.
    • →Delivered the full production-ready system in 3 months using AI-assisted development workflows, achieving enterprise-level output with lean execution.

  • Full-Stack Developer

    2023 – 2025

    Exadot LLC — Tashkent, Uzbekistan

    • →Contributed to large-scale web and custom software projects as part of a 50+ engineer team delivering 250+ solutions for international clients.
    • →Developed scalable backend services using Node.js, TypeScript, NestJS, Java, and Spring Boot.
    • →Designed and optimized GraphQL APIs and managed relational/non-relational databases (MySQL, MongoDB, JPA/Hibernate).
    • →Implemented secure authentication & authorization with JWT, Spring Security, and session management.
    • →Built real-time features using WebSocket / Socket.IO and automated scheduled tasks.
    • →Applied clean architecture principles (MVC, Dependency Injection, Middleware) for maintainable systems.
    • →Deployed containerized applications using Docker on Linux VPS (AWS EC2) with NGINX configuration.
    • →Collaborated using GitHub/GitLab in a Monorepo-based workflow.

  • Frontend Developer

    2021 – 2023

    Colibrisoft IT Company — Tashkent, Uzbekistan

    • →Colibrisoft is a technology company specializing in web, mobile, e-commerce, and IoT solutions, with a team of 10–49 professionals.
    • →Developed scalable Single Page Applications (SPA) using React, TypeScript, and EJS.
    • →Translated UI/UX wireframes and design mockups into pixel-perfect, responsive interfaces.
    • →Implemented efficient state management using Redux and React Context API.
    • →Integrated internationalization (i18n) with React-i18next for multilingual platforms.
    • →Improved styling architecture using SCSS/SASS, and performed code refactoring for maintainability.
    • →Optimized application performance and ensured cross-device responsiveness.
    • →Managed project dependencies and package integrity using Yarn, npm, and nvm.
    • →Collaborated closely with UX/UI designers and backend developers to ensure seamless feature delivery.

Services

What I build for businesses

Business Platforms & Internal Systems

B2B / B2C · Multi-Tenant · SaaS · ERP · Operations Automation

I build systems that help companies manage operations, orders, inventory, and internal workflows more efficiently. These platforms replace manual processes with digital tools, allowing businesses to track products, manage suppliers, control stock, and automate operational tasks. Built using scalable backend architectures with Node.js, NestJS, Java, and modern database systems, supporting real business environments and large datasets. Result: businesses gain better visibility, automation, and operational efficiency.

Customer-Facing Web Products

Marketplaces · Ordering Systems · Web Platforms

I develop modern web applications that allow businesses to sell products, interact with customers, and deliver digital services online. These platforms include marketplaces, ordering systems, dashboards, and interactive applications with real-time updates, search, filtering, and responsive user experiences. Built with React, Next.js, and real-time technologies, ensuring smooth performance across devices. Result: businesses get scalable digital products that improve customer experience and increase engagement.

Reliable Infrastructure & Production Monitoring

AWS · Docker · Security · Monitoring & Observability

I design and deploy production-ready infrastructure that keeps applications stable, secure, and monitored. Systems are deployed using Docker on AWS EC2 and Linux VPS, with NGINX reverse proxy and PM2 for reliable runtime performance. For observability and proactive issue detection, I implement Grafana and Prometheus monitoring, along with Telegram alert systems for real-time notifications on critical events. Security includes JWT authentication, RBAC access control, and secure environment configuration. Result: stable infrastructure, real-time monitoring, and faster response to operational issues as systems scale.

Technical Skills

Engineering-first stack

Core Stack

Languages

  • TypeScript
  • JavaScript (ES6+)
  • Java
  • Python
  • PHP

Backend

  • Nest.js (Expert)
  • Node.js
  • Spring Boot
  • Express

Frontend

  • Next.js 14 (App Router)
  • React
  • Redux Toolkit
  • Tailwind CSS

Databases & Infrastructure

Databases

  • PostgreSQL (Prisma)
  • MongoDB (Mongoose)
  • MySQL

DevOps

  • Docker
  • Nginx
  • AWS (EC2/S3)
  • Linux (Ubuntu)
  • PM2

Real-time & API

  • Socket.io
  • GraphQL
  • Axios
  • REST (Swagger)

Security & Engineering

Security

  • JWT
  • Bcrypt
  • OAuth
  • Rate Limiting
  • Firewall configuration

Efficiency

  • AI-Assisted Development (Cursor/Copilot)
  • CI/CD basics

Monitoring & Observability

  • Grafana
  • Health Checks
  • Performance Logging
  • Telegram Alerts
  • Prometheus

Ecosystem & Tools

Tools

  • Git
  • Postman
  • Vitest/Cypress (Testing)
  • Zsh
  • Figma

Portfolio

Selected projects

Case Study

The ERP Project

Multi-tenant ERP for medical clinics and suppliers — from zero to production as Solo Lead.

The Challenge

Medical clinics and their suppliers needed a single, reliable system: orders, inventory, supplier management, compliance, and reporting — all in a multi-tenant setup where each organization's data stays isolated. Manual processes, spreadsheets, and legacy tools were slow, error-prone, and didn't scale. The ask: design and build this system from scratch, with one lead engineer owning architecture and delivery.

Engineering Solution

  • •Multi-tenant architecture: shared codebase, tenant-scoped data and auth (JWT + RBAC).
  • •Google Cloud Vision OCR: automated extraction from prescriptions, forms, and documents to cut manual data entry.
  • •Real-time visibility: Grafana dashboards for system health, performance, and business metrics; Telegram bot for critical alerts so issues are acted on quickly.
  • •Security: JWT-based auth, role-based access, and a security checklist (auth, input validation, audit logging, secrets) applied across design and rollout.
  • •Stack: NestJS, Next.js (App Router), TypeScript, PostgreSQL (Prisma), Redis, Docker, Nginx, AWS — built for availability and maintainability.

Business Impact

  • •~80% automation of previously manual order and document workflows.
  • •10+ tenant organizations onboarded with isolated, secure environments.
  • •Faster incident response and higher confidence in system health thanks to monitoring and Telegram alerts.
  • •Scalable foundation for adding more clinics and suppliers without re-architecting.

Ready to build systems that scale?

Contact

If you're looking for a Full-Stack Engineer who can own architecture, delivery, and operations — from multi-tenant ERPs to AI integrations and cloud infrastructure — let's talk. I'm based in South Korea (E-7) and open to full-time roles and strategic partnerships with teams that care about quality, security, and impact.

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Open to opportunities at Naver, Coupang, Toss, and ambitious startups.