Patryk Sadkowski
Technical Expertise

My Skills & Technologies

As a Full-Stack Software Engineer with enterprise experience, I've mastered a comprehensive technology stack. From frontend frameworks to backend architecture, cloud deployment to database optimization—here's my technical toolkit that drives results for Fortune 500 companies and innovative startups.

Core Competencies

Frontend Development

Modern frontend frameworks and libraries for building responsive, performant user interfaces that scale to millions of users.

Frameworks & Libraries

React.js Next.js Vue.js Astro

Languages & Styling

TypeScript JavaScript HTML5 CSS3 Tailwind CSS

Backend Development

Scalable server-side architecture and API development using modern frameworks, designed for enterprise-grade performance and reliability.

Runtime & Frameworks

Node.js NestJS Express.js Python GO Lang

APIs & Integration

RESTful APIs GraphQL Apollo Server Webhooks

Database Management

Comprehensive database design and optimization for high-performance applications, from SQL to NoSQL solutions with advanced querying capabilities.

Database Systems

PostgreSQL MongoDB Redis SQL

ORMs & Tools

TypeORM Prisma Query Optimization Data Modeling

DevOps & Cloud

Cloud infrastructure management and deployment automation for scalable, reliable applications with enterprise-grade security and monitoring.

Containerization & Cloud

Docker Azure Linux Nginx

CI/CD & Automation

Azure DevOps CI/CD Pipelines Deployment Automation

Mobile Development

Cross-platform mobile application development with native performance and seamless user experience across iOS and Android platforms.

Mobile Frameworks

React Native Cross-Platform iOS Android

Mobile Optimization

Performance UX Design Native APIs

Testing & Quality

Comprehensive testing strategies ensuring code quality, reliability, and maintainability across enterprise applications and critical systems.

Testing Frameworks

JEST Playwright Unit Testing E2E Testing

Development Tools

Git JIRA Code Quality Best Practices

Specializations

Performance Optimization

Achieved 8x performance improvements in enterprise applications through advanced optimization techniques, code splitting, and efficient rendering strategies.

  • • Bundle optimization and code splitting
  • • Memory management and leak prevention
  • • Database query optimization
  • • Caching strategies and CDN integration

Enterprise Architecture

Designed and implemented scalable architectures for Fortune 500 companies, handling millions of users and complex business requirements.

  • • Microservices architecture design
  • • Scalable system design patterns
  • • API gateway and service mesh
  • • Load balancing and fault tolerance

Cloud Migration

Led cloud-to-self-hosted migrations and modernization projects with zero downtime, ensuring business continuity throughout complex transitions.

  • • Zero-downtime migration strategies
  • • Hybrid cloud architecture
  • • Infrastructure as Code (IaC)
  • • Security and compliance management

Full-Stack Integration

Seamless integration between frontend and backend systems, with expertise in API design, real-time communications, and third-party service integration.

  • • RESTful and GraphQL API design
  • • Real-time data synchronization
  • • Third-party API integration
  • • Payment processing and webhooks

Tools & Technologies

Development Tools

Visual Studio Code
Git & GitHub
Docker Desktop
Postman
npm & yarn

Design & Collaboration

Figma
JIRA & Confluence
Slack & Teams
Azure DevOps
Notion

Third-Party Services

Stripe Payments
MailChimp
Calendar APIs
Directus CMS
Azure Services

Ready to Transform Your Ideas Into Reality?

Let's discuss your project and explore how my full-stack expertise can help you build scalable, innovative solutions that deliver real business value. From concept to deployment, I'm here to make it happen.

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Available for freelance projects • Based in Poland • Fluent in English