Piotr Kowalski
Senior Web Developer | React, Node.js, Django | 6+ Years in Scalable Full-Stack Development
I'm a Senior Web Developer with over 6 years of experience building scalable full-stack applications using React, Node.js, and Django. I’ve led performance optimization initiatives (35% LCP improvement), cost-saving efforts (30% AWS savings), and successful legacy migrations to microservices. I thrive in agile environments, mentor junior developers, and specialize in building clean, maintainable code for high-performance systems.
Netguru
University of Information Technology and Management in Rzeszow
Powiat wrocławski, Lower Silesia, Poland
波蘭
精選履歷
上傳於 2025年7月16日
專業背景
- 目前狀態就職中
- 專業全端工程師・後端開發人員・數據工程師
- 產業軟體・電子商務 (EC)・區塊鏈
- 工作年資6 到 10 年 (6 到 10 年相關工作經驗)
- 管理經歷我有管理 5～10 人的經驗
- 技能
- 語言能力English・專業Polish・母語或雙語
- 最高學歷大學
求職偏好
- 目前狀態
- 預期工作模式全職・對遠端工作有興趣
- 希望獲得的職位Senior Full Stack Developer
- 期望的工作地點Powiat wrocławski, Lower Silesia, Poland
- 接案服務不提供接案服務
工作經驗
Senior Full-Stack Developer
Powiat wrocławski, Lower Silesia, Poland
-Led React performance optimization project, reducing LCP by 35% through code-splitting and memorization
-Designed Node.js micro-service handling 500+ requests per minute (RPM) for payment processing, achieving 99.99% uptime.
-Established accessibility audit process that brought client's platform to WCAG 2.1 AA compliance
Full-Stack Developer
Powiat poznański, Greater Poland, Poland
-Reduced Django admin panel load times by 72% through query optimization and caching
-Migrated monolithic legacy system to containerized microservices (Docker + Kubernetes)
-Implemented Python type hints across code-base, decreasing runtime errors by 40%
-Worked in a cross-functional team delivering fin-tech and SaaS solutions
Frontend Tech Lead
-Architect Next.js e-commerce platform processing €1M+ monthly transactions
-Improved mobile Lighthouse scores from 58 to 89 through image optimization and SSR tuning
-Mentored 4 junior developers, with all promoted within 12 months
-Oversaw front-end road-map and coordinated releases across teams
Junior Web Developer
Powiat warszawski zachodni, Mazovia, Poland
-Developed Vue.js dashboard with real-time data visualization for IoT startup
-Automated testing pipeline reducing regression bugs by 65%
-Optimized Docker deployments, cutting AWS costs by $8k/year
學歷
工學學士（BEng）
・
Computer Science社團活動
-Led a 5-person team to build a library management system (adopted by the university)
-Completed AWS Academy program (cloud deployment)
簡介
-Specialized in web development, distributed systems, and modern database architectures.
-Thesis: "Efficiency Analysis of NoSQL vs SQL Databases for High-Traffic Web Applications" (graded 4.8/5.0).
-Key project: Led team to develop a Java Spring + React library management system, later adopted by the university.