WORK EXPERIENCE
Lead JavaScript & TypeScript Software
Engineer
Brainhub
September 2020 – January 2023 | Gliwice, Poland
Designing and developing web and mobile software
products from concept to release using React,
Next.js, React Native, Redux, Apollo GraphQL,
NestJS, Express and Node.js technology stack
Working on software architecture design for web
and mobile products: analyzing requirements,
creating data models, designing complex modules
and features
Solving non-trivial tasks related to reliable
distributed data synchronization, resilient operation
and quick recovery, data processing time
Karol Brzezinski
JavaScript & TypeScript
Software Engineer
Warsaw, Poland
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-https://github.com/smartman0307/
https://karol-dev.netlify.app/
SUMMARY
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JavaScript & TypeScript Software Engineer
Solwit SA
March 2019 – July 2020 | Gdańsk, Poland
Designing and developing client-side applications
using React and Redux/MobX
Developing back-ends for web and mobile clients
using Node.js (Express / NestJS)
Designing and implementing public RESTful and
GraphQL(Apollo) server-side APIs
Architecting web and mobile solutions to ensure
maintainability and extensibility
Communicating
with
clients
and
client
representatives to direct the development
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Full stack developer
Stepwise
June 2016 – December 2018 | Gliwice, Poland
Working closely with clients to understand the
business needs
Designing and developing applications using
Bitrix24
Developing server APIs for web and mobile clients
using PHP
Designing the architecture of software solutions out
of high-level requirements
Highly skilled JavaScript & TypeScript software
engineer with 6 years of experience in designing and
implementing innovative web applications. Proven
track record in improving load times by 25%,
increasing user engagement by 15%, and boosting
sales by 30%. Collaborative team player with expertise
in managing the software development life cycle and
delivering projects on time and within budget.
Proficient in developing database, creating user
interface, writing and testing codes, troubleshooting
simple/complex issues, and implementing new
features based on user feedback.
TECHNICAL SKILLS
Languages
JavaScript/TypeScript, PHP, Python, SQL, C++, C/C#
Libraries & Frameworks
React, Next.js, Vue.js, Nuxt.js, Angular, Laravel, Django,
jQuery
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Platforms
Linux, Windows, macOS, iOS, Android, AWS, Azure
Cloud Infrastructure
AWS, Google Cloud Platform, Microsoft Azure
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EDUCATION
Master of Science in Information Technology
Warsaw University of Technology
2014 – 2016 | Warsaw, Poland
Bachelor of Science in Information
Technology
Warsaw University of Technology
2008 – 2012 | Warsaw, Poland
Tools
Git, JIRA, Confluence, Docker, Visual Studio
LANGUAGES
English
Fluent
