Łukasz Nawrocki
Verified Expert in Engineering
Web App Development Developer
Poznań, Poland
Toptal member since February 11, 2022
Łukasz is a passionate React Native developer with over five years of experience. He has worked for small startups and large corporations, creating smooth and pleasant experiences for hundreds of thousands of users from all around the world. In his work, Lukasz values constant communication and attention to detail to understand a client's needs.
Portfolio
Experience
- Web App Development - 6 years
- React - 6 years
- JavaScript - 6 years
- React Navigation - 5 years
- Mobile App Development - 5 years
- React Native - 5 years
- Jest - 5 years
- Firebase - 4 years
Availability
Preferred Environment
React Native, React, Firebase, React Navigation, JavaScript, Mobile App Development, Push Notifications
The most amazing...
...thing I've developed is a Push notification-driven app using GraphQL. Our team has taken a new approach to a problem and redesigned the solution from scratch.
Work Experience
Front-end Engineer
YASH Technologies
- Released iOS and Android Native applications despite a short deadline.
- Proposed and developed Vue Native, a React Native wrapper, solution for the application allowing to maintain one repository for mobile applications instead of two, using JavaScript.
- Took responsibility for major refactor of two Vue.js microfrontends, improving the system's stability.
- Managed, oversaw, and improved four repositories using TypeScript, Swift, and Java for mobile and web applications.
Senior React Native Developer
Sonalake
- Delivered offline-first, reliable, and performant applications.
- Helped and mentored other developers in the team, leading a squad of four people.
- Participated in talks with the client to suggest more performant and better user experiences.
- Fixed crucial parts of the application under time pressure multiple times.
React Native Developer
Quiqup
- Designed and created Push notification-driven React Native application from scratch.
- Built web modules in React for customers' web applications.
- Took active part in company-wide talks, helping to define software testing strategy.
Experience
React Native Application for Traveling
I have worked with large travel industry customers, developing trips aggregator apps similar to Kayak Trips or Google Travel.
The main goal of this project was to rewrite an already existing Native app with React Native. Because of specific conditions during travel, the app had to be 100% reliable offline.
Customers to which the app is delivered are only corporate, with users being mainly business people from Fortune 500 companies. This requires the app to provide a top-notch, modern experience and native-like performance.
The team consists of junior regular-level developers, so one of my primary responsibilities is to mentor and help others write quality code.
Education
Master's Degree in Smart Aerospace and Autonomous Systems
University of Évry - Évry, Essonne, France
Bachelor's Degree in Automation and Robotics
Poznań University of Technology - Poznań, Poland
Skills
Libraries/APIs
React, React Navigation, Redux-Saga, Vue, REST APIs, Node.js
Languages
JavaScript, TypeScript, HTML, CSS, Swift, Java, GraphQL
Frameworks
React Native, Redux, Jest, Next.js
Platforms
Firebase, iOS, Mobile, Android, Amazon Web Services (AWS)
Paradigms
REST
Other
Mobile App Development, Mobile Apps, APIs, Front-end, Push Notifications, Web App Development, React Native Navigation, Software Development, Autonomous Robots, Software
How to Work with Toptal
Toptal matches you directly with global industry experts from our network in hours—not weeks or months.
Share your needs
Choose your talent
Start your risk-free talent trial
Top talent is in high demand.
Start hiring