Skip to content
View valyefimov's full-sized avatar
🎯
Focusing
🎯
Focusing

Block or report valyefimov

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Maximum 250 characters. Please don't include any personal information such as legal names or email addresses. Markdown supported. This note will be visible to only you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
valyefimov/README.md

πŸš€ Valentyn Yefimov | Full-Stack Architect & Tech Lead

Experience Projects High-Load


πŸ‘‹ Hello! Welcome to My Profile

I'm a seasoned full-stack architect with 16+ years of hands-on experience turning complex business challenges into elegant, scalable solutions. From solo projects to leading large development teams, I've successfully delivered 100+ projects, including high-load systems processing billions in transactions.

I don't just write code, I architect solutions, optimize performance, lead teams, and deliver business value. Whether you need to build from scratch, scale an existing platform, or rescue a struggling project, I bring the expertise and passion to make it happen.


πŸ’Ž Why Choose Me?

βœ… Battle-Tested Experience - 16 years solving real-world problems across diverse industries

βœ… Full-Cycle Expertise - From business analysis & architecture to deployment & maintenance

βœ… High-Load Systems - Proven track record with systems handling massive scale

βœ… Team Leadership - Successfully managed and mentored development teams

βœ… Fast Learner - Quick to adapt to new technologies and environments

βœ… Clean Code Advocate - Passionate about maintainable, well-documented solutions

βœ… Agile & Scrum - Daily standups, sprints, retrospectives, I live and breathe Agile


🎯 What I Bring to Your Project

πŸ—οΈ Architecture & Planning

Strategic technology selection, scalable architecture design, and technical roadmap planning that aligns with business goals.

⚑ Performance Optimization

Expert in identifying bottlenecks and implementing optimizations that dramatically improve speed, scalability, and user experience.

πŸ‘₯ Team Leadership

Experience leading cross-functional teams, conducting code reviews, mentoring developers, and establishing best practices.

πŸ”§ Full-Stack Development

End-to-end development capabilities, from crafting beautiful, responsive UIs to building robust, secure backend systems.

πŸ“Š Business Analysis

Translating business requirements into technical specifications and delivering solutions that drive measurable results.


πŸ’» Technology Arsenal

Frontend Excellence

🎨 Frameworks & Libraries
   ➀ React | Angular (all versions) | Vue | Svelte | Next.js
   ➀ Redux | MobX | Flux | Socket.io | Electron | Gatsby

πŸ“± Mobile Development
   ➀ React Native | Ionic | Cordova | Capacitor | PhoneGap

🎯 Languages & Tools
   ➀ TypeScript | JavaScript (ES6+) | CoffeeScript | Flow

πŸ’… UI/UX Frameworks
   ➀ Material Design | Ant Design | MUI | Tailwind CSS | Chakra UI
   ➀ Bootstrap | Prime React | HTML5 | CSS3 | SASS/SCSS | LESS

Backend Powerhouse

βš™οΈ Server-Side Technologies
   ➀ Node.js | Express | NestJS | Next.js | Koa
   ➀ PHP | Symfony | Yii | CakePHP | Zend Framework

πŸ—„οΈ Databases & Storage
   ➀ PostgreSQL | MySQL | MongoDB | Redis | SQLite | Firebase

πŸ”Œ APIs & Integration
   ➀ RESTful API | GraphQL | Microservices | WebSockets

πŸ›οΈ Architecture Expertise
   ➀ Database Design & Optimization
   ➀ Performance Tuning & Caching Strategies
   ➀ Security Best Practices & Authentication

DevOps & Infrastructure

☁️ Cloud Platforms
   ➀ AWS | Azure | Google Cloud Platform | Heroku | DigitalOcean | Vercel

🐳 Containerization & Deployment
   ➀ Docker | Convox | CI/CD Pipelines

🌐 Hosting & CDN
   ➀ Cloudflare | Bluehost | GoDaddy | Netlify

Quality Assurance & Testing

πŸ§ͺ Testing Frameworks
   ➀ Jest | Cypress | Mocha | Jasmine | Protractor | Enzyme | RTL

πŸ€– Automation & E2E
   ➀ Puppeteer | Playwright | PhantomJS | CasperJS | CodeceptJS

πŸ“Š CI/CD & Monitoring
   ➀ Travis CI | CircleCI | GitHub Actions | Storybook

Content Management & Tools

πŸ“ CMS Platforms
   ➀ WordPress | Strapi | Contentstack | Butter CMS | Retool

πŸ”§ Project Management
   ➀ Jira | Trello | ClickUp | Asana | Notion

πŸ“Š Version Control
   ➀ Git | GitHub | GitLab | Bitbucket | SVN

AI & Modern Tools

πŸ€– AI Integration
   ➀ OpenAI API | Vercel AI SDK | ChatGPT Integration
   ➀ Claude | Custom AI Prompts & Workflows

⚑ Performance Tools
   ➀ Google PageSpeed Insights | Lighthouse | Web Vitals

πŸ† Career Highlights

Recent Focus (2022-2024)

🎯 Solution Architecture - Designing scalable systems and selecting optimal tech stacks

🎯 Technical Leadership - Leading development teams and establishing engineering best practices

🎯 High-Impact Delivery - Shipping production-ready code while managing team velocity

Notable Achievements

πŸ’° Built a system processing 10B+ in transactions - Architected and delivered a high-load platform

πŸ‘₯ Led teams of 7+ developers - Managed projects from inception to deployment

⚑ 100+ successful projects - Consistent track record of on-time, high-quality delivery

πŸ“ˆ Performance optimization specialist - Achieved dramatic speed improvements across multiple platforms


πŸŽ“ My Journey

My love affair with technology started at age 14 when I built my first website. What began as a hobby evolved into a career defined by continuous learning and problem-solving excellence.

Professional Experience:

  • 🏒 System Architecture & Team Leadership - Designed systems and led cross-functional teams
  • πŸš€ Startup to Enterprise - Experience across company sizes and industries
  • 🌍 Global Collaboration - Worked with distributed teams across multiple time zones
  • πŸ“š Continuous Learning - Staying ahead of tech trends and emerging technologies

🀝 How I Work

πŸ”„ Agile Methodology Sprint planning, daily standups, retrospectives, and continuous iteration, Agile is my default mode.

πŸ’¬ Clear Communication Regular updates, transparent timelines, and proactive problem-solving. No surprises.

🎯 Results-Oriented Focused on delivering business value, not just writing code. Your success is my success.

πŸ“– Documentation First Clean code, comprehensive documentation, and knowledge transfer, I build for the long term.

πŸ” Quality Assurance Comprehensive testing, code reviews, and continuous integration ensure reliable deliverables.


🌟 Let's Build Something Amazing

Whether you're a startup with a bold vision, an enterprise needing to scale, or a team requiring technical leadership, I'm here to help.

I specialize in:

  • πŸ—οΈ Building MVPs and full-scale applications from scratch
  • πŸ”§ Rescuing and refactoring legacy codebases
  • ⚑ Optimizing performance and scalability
  • πŸ‘₯ Leading development teams and establishing best practices
  • πŸš€ Taking projects from concept to production

My promise: Fast response times, transparent communication, high-quality code, and solutions that exceed expectations.


πŸ“ Location & Availability

🌍 Based in: Montenegro

πŸ’Ό Available for: Remote collaboration worldwide

⏰ Timezone: Flexible working hours to accommodate your schedule


πŸ“« Let's Connect

Ready to discuss your project? I'm just a message away!

πŸš€ Available for immediate start

πŸ’Ό Open to both short-term and long-term engagements

🌟 Committed to delivering excellence


πŸ’Ό Professional. Reliable. Results-Driven.

Looking forward to collaborating with you and bringing your ideas to life!


⭐ If you're looking for a developer who delivers, let's talk! ⭐

Pinned Loading

  1. ammmigo-react-datepicker ammmigo-react-datepicker Public

    JavaScript 1

  2. wondrous-dev/wondrous-frontend wondrous-dev/wondrous-frontend Public

    TypeScript 16 5