Fenomen-Alex (Alex F.) · GitHub
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Fenomen-Alex/README.md

Hi, I'm Oleksandr (Alex) Fomenko

Senior Fullstack Engineer | Distributed Systems Architect

LinkedIn GitHub Email


About Me

Strategic engineer with 5+ years of experience architecting high-performance distributed systems in Fintech and Gen-AI. I build pixel-perfect, responsive UIs and scalable backend services, maximizing delivery speed through Agentic AI workflows.

  • Currently building multi-vertical fintech ecosystems (KYC, Tax, Mortgages, Wealth, Insurance)
  • Deep expertise in the JavaScript/TypeScript ecosystem and Golang
  • Passionate about design systems, component architecture, and developer experience

Tech Stack

Domain Technologies
Frontend React 18+, Next.js 14+, Tailwind CSS, shadcn/ui, Ant Design, Material-UI, Styled Components
Backend Node.js, Express, Go, NestJS
Cloud & Infra AWS (EC2, S3, Lambda), Docker, Kubernetes, BitBucket, Google Cloud
Data PostgreSQL, MySQL, Prisma ORM, TypeORM, GraphQL, Firebase, Firestore
AI & Tools Claude Code, OpenCode, Ollama, HubSpot, DocuSign

By the Numbers

5+ Years 55 Repos 14 Stacks 4 Roles 7 Certs 45% Faster
Experience on GitHub Mastered Progressive Completed UI Loads

Featured Projects

Project Description Stack
EventLoop JS Event Loop and V8 engine visualization TypeScript
go-chat Real-time chat application built in Go Go
SimpleWeatherApp Clean, minimal weather application TypeScript
portfolio This portfolio site — premium landing page with dark mode HTML, Tailwind CSS

Experience

Senior Fullstack Architect · Distributed Fintech Platform · Dec 2025 – Present

  • Lead architect for multi-vertical fintech ecosystem (KYC, Tax, Mortgages, Wealth, Insurance)
  • Built high-fidelity responsive interfaces with Next.js 14+, Tailwind, shadcn/ui
  • Engineered bidirectional sync between HubSpot, DocuSign, and Conquest

Senior Fullstack Developer · Gen AI Startup · Mar 2025 – Dec 2025

  • Architected high-throughput platform with Next.js and Go
  • Achieved 35% reduction in API response latency
  • Supported 10,000+ daily active users with type-safe data flows

Full-Stack Developer · Freelance / MindSwitch · Aug 2023 – Jan 2025

  • Managed full SDLC for client projects with $100k+ Stripe processing
  • Reduced deployment time by 40% via CI/CD automation
  • Boosted type coverage by 35% using NestJS

Front-End Developer · BandaPixels · Jul 2021 – Aug 2023

  • Redesigned React/Next.js architectures, reducing UI load time by 45%
  • Established Jest/Cypress testing protocols, cutting regression bugs by 40%

Certifications

Certification Provider
JavaScript Algorithms and Data Structures freeCodeCamp
Front End Development Libraries freeCodeCamp
Back End Development and APIs freeCodeCamp
Relational Database freeCodeCamp
Quality Assurance freeCodeCamp
Responsive Web Design freeCodeCamp
Google Cloud Essentials Google Cloud
Essential Google Cloud CLI Tools Google Cloud
AWS Cloud Development Kit (CDK) & CLI Specialist AWS
Claude Code in Action Anthropic

Agentic AI Workflow

I leverage AI-augmented development to accelerate delivery while maintaining code quality:

  • Claude Code & OpenCode for automated refactoring and architectural audits — up to 60% velocity boost
  • Ollama for local, privacy-compliant LLM environments
  • WebStorm integrations for real-time, context-aware development

"Building distributed systems that scale, and interfaces that delight."

Pinned Loading

  1. GeoPulse GeoPulse Public

    TypeScript

  2. go-chat go-chat Public

    Go 1

  3. oss-hunter oss-hunter Public

    Shell

  4. portfolio portfolio Public

    TypeScript

  5. simple-face-detection simple-face-detection Public

    JavaScript

  6. Web_Speech_And_Timers Web_Speech_And_Timers Public

    TypeScript