Grzegorz P.

Grzegorz P.

Senior React Native Developer

London, United Kingdom
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About Me

Grzegorz is a Senior Software Developer with a strong focus on React Native and React.js - providing subject matter expertise for web and mobile-responsive designs on projects. He builds scalable solutions and implements pixel-perfect designs that balance challenging customer needs with application performance. He seeks to deliver clean, modern, smooth animations and features that provide excellent UI/UX - following the latest web standards and best practices.

Work history

UpStack
UpStack
Senior React Native Developer
2021 - Present (4 years)
Remote
  • Creating and developing innovative software solutions for clients across a broad range of industries.

  • Participate in scrums consisting of cross-functional teams, both software and hardware.

  • Ensure that features are being delivered efficiently and on-time.

The Economist
The Economist
Senior React Native Developer
2021 - Present (4 years)
Remote
  • Devise solutions to migrate the Economist app to React Native with new screens and functionalities for a better UX.

  • Worked on audio-related features and implemented new solutions on the native side of the app.

  • Optimize solutions to improve performance and reliability on the app - implementing best practices.

GoCompare
GoCompare
Senior React Native Developer
2020 - 2021 (1 year)
Remote
  • Worked on a car diagnostics mobile app with features to notify users of potential issues with their cars.

  • Designed and implemented solutions to integrate several products and features on the app for users.

  • Built and deployed a Node.js backend API to handle push notification management on the solution.

PurePoint
PurePoint
Senior React Native Developer
2017 - 2020 (3 years)
Porto, Portugal
  • Delivered a largescale project for British Gas - migrating the mobile apps to a modern React Native platform.

  • Improved the speed and quality of the final solution - sharing the new codebase across apps for significant cost savings.

  • Delivered the final product with 1.5M daily customers on iOS and Android - achieving high user satisfaction.

NearForm
NearForm
Senior JavaScript Developer
2017 - 2017
Remote
  • Developed and deployed new data migration solutions for the web apps of Vogue, Glamour, GQ and Vanity Fair.

  • Switched the platform to modern, uniform and performant frontend solutions - increasing user visits by 20+%.

  • Maintained NearForms' proprietary platform - identifying and resolving complex issues.

CornerJob
CornerJob
Senior JavaScript Developer
2016 - 2017 (1 year)
Barcelona, Spain
  • Designed and implemented new client-side features and performance improvements on the solution.

  • Improved the microservice architecture on CornerJob's React web app and native mobile solutions.

  • Ensured high quality of deliverables on the project and complied with development best practices.

eDreams ODIGEO
eDreams ODIGEO
Senior Software Developer
2012 - 2016 (4 years)
Barcelona, Spain
  • Developed a new web app that serves 40+ markets with 2M customers - optimizing testing and improving code reliability.

  • Liaised with the marketing and data science teams on new frontend solutions to analyze and manage SEM campaigns.

  • Designed, implemented and maintained a CMS platform for running 250+ marketing campaigns on the project.

BlueBirdMedia
BlueBirdMedia
Fullstack Developer
2011 - 2012 (1 year)
Elche, Spain
  • Designed, developed and implemented several websites and e-commerce platforms for clients.

  • Worked on both client-side and server-side solutions with monthly traffic between 10k+ to 100k+ visitors.

  • Built new features and functionalities on projects to ensure quality, responsiveness and scalability.

Internet Advantage
Internet Advantage
Web Developer
2011 - 2011
Salamanca, Spain
  • Designed and deployed new frontend-based performance optimizations on SEO solutions on the project.

  • Developed new websites and implemented new web design features on solutions.

  • Identified and resolved complex issues on solutions for clients.

Portfolio

Senior React Native Developer - The Economist App
Senior React Native Developer - The Economist App

Migrated the old Economist app platform to a new, more efficient React Native platform - implementing better features and functionalities. Improved the article playback and audio download features on the app, fixed functionality issues and edge cases on the project. Optimized the app to handle more than 10M users.

Senior React Native Developer - Car Diagnostics Mobile App
Senior React Native Developer - Car Diagnostics Mobile App

Built a new car diagnostics mobile app that integrates with the OBD device connected to the users' vehicle. Implemented features to notify users about potential vehicle issues, history of recent journeys and a breakdown of driving habits. Worked on a Node.js backend that handles push notifications and the Azure infrastructure.

Senior React Native Developer - British Gas
Senior React Native Developer - British Gas

Developed new solutions on a largescale project for British Gas - migrating several native mobile apps to a performant React Native solution - improving speed and quality. The solutions serve 1.5M customers on both Android and iOS devices.

Education

Degree in Informatics and Telecommunication
Degree in Informatics and Telecommunication
Universidad Miguel Hernández de Elche
2007 - 2009 (2 years)
MSc. Telecommunication Engineering
MSc. Telecommunication Engineering
Wroclaw University of Technology
2004 - 2010 (6 years)