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Piotr Kowalski
Senior Web Developer | React, Node.js, Django | 6+ Years in Scalable Full-Stack Development
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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.
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Netguru
University of Information Technology and Management in Rzeszow
Powiat wrocławski, Lower Silesia, Poland
Ba Lan

CV chính

Cập nhật vào lúc thg 7 16 2025

Trình độ chuyên môn

  • Tình trạng hiện tại
    Đã có việc làm
  • Nghề nghiệp
    Full Stack Development
    Back-end Engineer
    Data Engineer
  • Lĩnh vực
    Phần mềm
    Thương mại điện tử
    Blockchain
  • Kinh nghiệm làm việc
    6-10 năm (6-10 năm liên quan)
  • Kinh nghiệm quản lý
    I've had experience in managing 5-10 nhân viên
  • Kỹ năng
    React
    Next.js
    Vue.js
    Node.js
    Django
    python
    AWS
    Docker
    Kubernetes
    performance optimization
    Accessibility
  • Ngôn ngữ
    English
    Chuyên nghiệp
    Polish
    Bản địa hoặc song ngữ
  • Trình độ học vấn cao nhất
    Bachelor

Ưu tiên tìm kiếm việc làm

  • Tình trạng hiện tại
  • Hình thức làm việc mong muốn
    Full-time
    Quan tâm đến làm việc từ xa
  • Vị trí làm việc mong muốn
    Senior Full Stack Developer
  • Địa điểm làm việc mong muốn
    Powiat wrocławski, Lower Silesia, Poland
  • Freelance
    Không phải freelancer

Kinh nghiệm làm việc

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Senior Full-Stack Developer

Netguru
Full-time
03/2021 - Hiện tại
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

NEXT STX GYMNASIUM
Full-time
07/2019 - 02/2021
1 yr 8 mos
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

The Softwarehouse
Full-time
01/2018 - 06/2019
1 yr 6 mos
-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

10Clouds
Full-time
06/2016 - 12/2017
1 yr 7 mos
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

Học vấn

Bằng Cử nhân Kỹ thuật (BEng)
Computer Science
2014 - 2018
Các hoạt động xã hội
-Led a 5-person team to build a library management system (adopted by the university) -Completed AWS Academy program (cloud deployment)
Mô tả
-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.