Олег

OLEH HORBACHOV
FULLSTACK DEVELOPER (NEXT.JS / NODE.JS)
Zhytomyr, Ukraine, [open contact info](look above in the "contact info" section), [open contact info](look above in the "contact info" section)
Upwork | GitHub

SUMMARY
Product-oriented Fullstack Developer with a strong focus on building scalable web applications and SaaS
products. Expert in the modern PERN stack, enhanced with TypeScript, Fastify, and Redis. Experience in
DevOps practices (Docker, Kubernetes, Grafana) and implementing asynchronous architectures using
BullMQ. Proven track record of independently launching SaaS products and delivering high-quality freelance
solutions. Adept at integrating AI Agents into business workflows.

TECHNICAL SKILLS
Core Stack Backend & DB Architecture & Async UI/UX DevOps & Tools
TypeScript (Strict), Fastify, BullMQ (Job Queues), TailwindCSS, Docker,
React.js, Express.js, Zod (Schema Validation) Shadcn/ui, Git,
Next.js, Prisma ORM, Scalable System Design Zustand, AI Agents integration
Node.js PostgreSQL, React Native
Redis (Expo)

PROFESSIONAL EXPERIENCE
Fullstack Developer & Founder | Self-Employed / SaaS Products Jan 2023 – Present
Successfully designed, architected, and deployed scalable web products, managing the full lifecycle
from database design to deployment on Kubernetes.

KEY PROJECTS

1. GraphAnalyze.com – AI-Powered Financial Analytics Platform
Built AI-driven PWA analyzing TradingView data via asynchronous BullMQ workers.
Deployed on Kubernetes (K8s) with HPA autoscaling and Grafana monitoring.
Developed complex user dashboards (trade history, referrals) and admin panel.
2. Tempomail.me – Disposable Email Service
Built high-speed inbox service using Express.js and Next.js with secure API Key integration.
Implemented near real-time email sync via efficient client-side polling.
Integrated Google AdSense, optimizing script loading for high Core Web Vitals.
Freelance Fullstack Developer Jan 2023 – Present
Delivered custom web solutions for international clients using the PERN/MERN stack.
Refactored legacy codebases, migrating JavaScript projects to TypeScript for better maintainability.

EDUCATION
Bachelor of Engineering (BEng) | Software Engineering 2023 – 2027 (Expected)
Focus on Computer Science fundamentals and System Architecture.

LANGUAGES
English: Intermediate (B1)
Ukrainian: Native