Patryk Sadkowski
Professional Journey

Enterprise Experience

Professional experience working with global companies and billion-dollar enterprises, delivering mission-critical solutions at scale. From startup environments to Fortune 500 companies, I've consistently delivered high-impact solutions that drive business growth.

Work Experience

YZ Systems

Ingersoll Rand Partnership

Software Engineer - Fullstack

2023 - Present

$24B Client Value

Fortune 500

Key Achievements

Performance Optimization

Revolutionized device testing processes by developing C# integrations that reduced testing time from 40 minutes to just 5 minutes - an 8x performance improvement that transformed operational efficiency.

  • • Designed and implemented automated testing workflows
  • • Integrated C# backend systems with frontend applications
  • • Reduced manual testing overhead by 87.5%
Business Growth

Contributed directly to acquiring a $24 billion client through technical excellence and innovative solution architecture that met enterprise-grade requirements.

  • • Collaborated with sales and technical teams on client presentations
  • • Developed proof-of-concept solutions for enterprise requirements
  • • Ensured scalability and reliability for large-scale deployments
Cloud Migration & Modernization

Designed and executed cloud-to-self-hosted migration solutions, including seamless Mantine UI upgrades with zero service disruptions during production deployments.

  • • Architected hybrid cloud migration strategies
  • • Maintained 100% uptime during system transitions
  • • Modernized UI components while preserving functionality
React.js C# TypeScript Azure Mantine UI

Ingersoll Rand

Global Industrial Leader

Software Engineer - Frontend

2022 - 2023

$28B Revenue

150K Pages

Enterprise CMS Management

Massive Scale Operations

Managed an extensive CMS system serving over 90 companies and 150,000 subpages for a $28 billion global industrial company, ensuring consistent brand experience across all digital touchpoints.

  • • Coordinated content management across 90+ subsidiary companies
  • • Maintained consistency across 150,000+ individual pages
  • • Collaborated with global Brand and Marketing teams
NextJS Rendering Engine

Designed and implemented a custom NextJS rendering engine that significantly reduced production errors and improved the ticket evaluation process by 70%, streamlining content deployment workflows.

  • • Built custom server-side rendering solutions
  • • Implemented automated error detection and prevention
  • • Optimized content delivery and caching strategies
Workflow Optimization

Streamlined development and content management processes, resulting in improved team productivity and faster time-to-market for digital initiatives across multiple business units.

  • • Reduced ticket evaluation time by 70%
  • • Implemented automated quality assurance checks
  • • Created standardized deployment procedures
Next.js React.js TypeScript CMS SEO

Webwave

SaaS Platform

Software Engineer - Frontend

2021 - 2022

350K PLN MRR

Growing SaaS

Complete Application Modernization

Vue.js Application Rewrite

Led a comprehensive application rewrite in Vue.js for a growing SaaS company with 350,000 PLN monthly recurring revenue, modernizing the entire frontend architecture while maintaining business continuity.

  • • Migrated legacy codebase to modern Vue.js architecture
  • • Maintained zero downtime during transition period
  • • Improved application performance and user experience
Unified Design System

Created a comprehensive design system and component library that standardized UI/UX across the entire platform, improving development efficiency and ensuring consistent user experience.

  • • Built reusable component library from scratch
  • • Established design tokens and style guidelines
  • • Reduced development time for new features by 40%
Performance Optimization

Optimized application performance and loading times, implementing modern development practices that enhanced user satisfaction and reduced bounce rates.

  • • Improved page load times by 60%
  • • Implemented lazy loading and code splitting
  • • Optimized bundle size and asset delivery
Vue.js JavaScript CSS3 Design System Performance

mylight150

Energy Solutions

Software Engineer - Full Stack

2021

100% Uptime

Critical System

Mission-Critical System Maintenance

Zero-Downtime Operations

Maintained a critical production system during parallel development phases, ensuring 100% uptime throughout the entire 3-month contract period while implementing new features and system improvements.

  • • Achieved 100% system uptime during migration period
  • • Implemented rolling deployment strategies
  • • Coordinated maintenance windows with minimal business impact
Comprehensive Testing Suite

Implemented robust testing frameworks using JEST for unit testing and Playwright for end-to-end testing, ensuring system reliability and preventing regressions during continuous development.

  • • Built comprehensive unit test coverage with JEST
  • • Implemented automated E2E testing with Playwright
  • • Established CI/CD pipelines for automated testing
Parallel Development

Successfully balanced system maintenance with new feature development, demonstrating ability to work in high-pressure environments where system availability directly impacts business operations.

  • • Managed concurrent development and maintenance workflows
  • • Prioritized critical fixes while advancing new features
  • • Maintained clear communication with stakeholders
Full Stack JEST Playwright CI/CD DevOps

Core Expertise

Enterprise Solutions

Fortune 500 companies, billion-dollar clients, mission-critical systems

Performance Expert

8x speed improvements, 100% uptime, zero-downtime deployments

Full-Stack Expert

Frontend, backend, DevOps, cloud migrations, modern architectures

Quality Focused

Comprehensive testing, CI/CD, automated workflows, reliability

Impact Metrics

$24B

Client Value Contributed

8x

Performance Improvement

150K+

Pages Managed

100%

System Uptime

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