Krzysztof is available for hire
Hire KrzysztofKrzysztof Olbiński
Verified Expert in Engineering
Software Developer
Location
Gdańsk, Poland
Toptal Member Since
January 6, 2020
Krzysztof has a wealth of experience in designing and developing advanced web applications. He's established a reputation for going above and beyond expectations, contributing extra effort to achieve high-quality results while displaying a pragmatic understanding of the realities of any given situation. He thrives in high-pressure, time-sensitive environments and enjoys utilizing the latest technological advances.
Portfolio
Pioner Labs
Continuous Integration (CI), Figma, REST, REST APIs, RESTful Development, CSS3...
LunchBadger
Continuous Integration (CI), SCSS, JSON API, Material Design, REST APIs...
BrandBastion
Material UI, Continuous Integration (CI), SCSS, JSON API, Material Design...
Experience
Availability
Part-time
Preferred Environment
React, Git, Visual Studio Code (VS Code), Confluence, Jira, Slack, MacOS, Front-end Development, Responsive UI, Tailwind CSS, React Hooks, UI Components, React Components, JSX, Storybook, API Integration, Scrum, Axios, Responsive Web Apps
The most amazing...
...thing I've developed is Tix.nl, that became the most popular meta search web app in the Dutch market.
Work Experience
Senior Front-end Engineer
2019 - 2019
Pioner Labs
- Built a state-of-the-art eCommerce platform under extreme time pressure for the largest textile retail company in Scandinavia.
- Exceeded expectations for developing highly efficient, scalable and feature flexible system.
- Demonstrated strong self-organization and communication skills working as part of a distributed, semi-remote team.
Technologies: Continuous Integration (CI), Figma, REST, RESTful Development, REST APIs, CSS3, Continuous Delivery (CD), CSS4, HTML5, CSS, Emotion Library, GraphQL, React, TypeScript, JavaScript, Front-end, GitHub, Front-end Development, Responsive UI, Tailwind CSS, React Hooks, UI Components, React Components, Startups, JSX, Storybook, API Integration, Scrum, Responsive Web Apps, APIs, ECMAScript (ES6), DOM
Senior Front-end Engineer
2017 - 2019
LunchBadger
- Led the development of Express Serverless Platform, that allows users to create, build, and deploy microservices and APIs on any cloud.
- Drastically reduced maintenance and development time after onboarding for new functionalities by reorganizing project architecture.
- Improved bottleneck efficiencies by up to 85% through advocating most effective development executions.
- Demonstrated strong communication and self-motivation skills working as part of 100% remote team.
Technologies: Continuous Integration (CI), SCSS, JSON API, Material Design, REST APIs, RESTful Development, CSS3, Amazon Web Services (AWS), Continuous Delivery (CD), TypeScript, NoSQL, MongoDB, UI Design, React Redux, CSS, Material UI, REST, GraphQL, CSS4, HTML5, JavaScript, Redux, React, Front-end, GitHub, Front-end Development, Responsive UI, UI Components, React Components, Startups, JSX, API Integration, Scrum, Axios, APIs, ECMAScript (ES6), DOM
Senior Front-end Engineer
2017 - 2017
BrandBastion
- Developed single-page applications including internal systems for monitoring and analyzing social media content.
- Built library of common app elements for a user interface, delivering the scope of functionalities within four weeks, providing the company with operable and functional MVP twice as fast as roadmap expectations.
- Developed marketing campaign app to generate unique social media content, contributing to the company’s goal to become an Instagram partner.
Technologies: Material UI, Continuous Integration (CI), SCSS, JSON API, Material Design, RESTful Development, REST APIs, Continuous Delivery (CD), NoSQL, Bootstrap, MongoDB, UI Design, React Redux, CSS4, CSS, REST, CSS3, HTML5, JavaScript, Redux, React, Front-end, GitHub, Front-end Development, Responsive UI, UI Components, React Components, API Integration, Scrum, Axios, ECMAScript (ES6), DOM
Senior Front-end Engineer
2015 - 2016
Wirtualna Polska
- Delivered front-end development of websites, created landing pages for marketing campaigns, and integrated interactive advertisements for one of the largest Polish media company.
- Delivered highly efficient and robust websites and single-page apps, performing well in high-stress environments with millions of simultaneous visitors.
- Built a proof of concept for a solution to automate configuring, delivering, and publishing content services, reducing process time from weeks to hours.
Technologies: Material UI, Continuous Integration (CI), SCSS, JSON API, Material Design, REST APIs, RESTful Development, Continuous Delivery (CD), NoSQL, GitLab, UI Design, MySQL, React Redux, CSS4, CSS, jQuery, Bootstrap, REST, CSS3, HTML5, JavaScript, Redux, React, Front-end, GitHub, Front-end Development, Responsive UI, UI Components, React Components, API Integration, Scrum, Axios, Responsive Web Apps, APIs, ECMAScript (ES6), DOM
Senior Front-end Engineer
2014 - 2015
Far and Wide
- Developed web applications and responsive websites, working as a single-player while maintaining regular contact with clients to move the project forward.
- Assumed control of ongoing monolith project threatened with dead-end, rescued the project by finding a solution to the core issue.
- Provided exceptional executions for requested websites and web-apps, delivering multiple projects in an unstructured, time-sensitive environment.
Technologies: JSON API, RESTful Development, REST APIs, MongoDB, MySQL, CSS4, CSS, jQuery, Bootstrap, REST, CSS3, HTML5, JavaScript, Front-end, GitHub, Responsive Web Apps, APIs, DOM
Senior Front-end Engineer
2009 - 2014
Travactory N.V.
- Constructed base architecture from early-stage proof of concept and development through final launch for an advanced, fully customizable booking engine.
- Increased bookings and profitability while decreasing problematic tickets through continual process improvements to business operations.
- Reduced development costs for CMS and CRM tools by applying architecture to create a self-configuring engine, meeting current requirements and establishing flexibility for future potential usage.
Technologies: Continuous Integration (CI), JSON API, RESTful Development, REST APIs, Continuous Delivery (CD), UI Design, MySQL, CSS4, CSS, Java, jQuery, REST, CSS3, HTML5, JavaScript, Adobe Flex, Adobe ColdFusion, Front-end, GitHub, API Integration, Responsive Web Apps, APIs, DOM
Experience
Booking Engine for Travactory N.V.
http://tix.nlFully customizable booking engine for booking flight tickets, hotel rooms, and car rental. Being the first developer on the team, I constructed base architecture from early-stage proof of concept and development through the final launch.
Flight Tickets Comparition Web App
http://travelio.nlReact/Node.js-based web app for flight tickets meta-search. I was a full-stack developer. The goal was to build a web app, that fetches flight tickets from different brands and display comparison meta-search results. Developed in two weeks record time.
Generic Content Platform
http://kobieta.wp.plReact-based web app for the content platform. I was a front-end developer, working in a team of four engineers. End result was building a generic content platform, flexible, scalable, and ready to serve under heavy traffic (millions of parallel visitors).
Skills
Languages
HTML5, CSS4, JavaScript, HTML, CSS, SCSS, JavaScript 6, ECMAScript (ES6), GraphQL, SQL, TypeScript, CSS3, Java
Frameworks
Redux, Tailwind CSS, Bootstrap, Material UI, Adobe Flex
Libraries/APIs
React, JSON API, React Redux, REST APIs, jQuery, Emotion Library
Tools
GitHub, Git, JSX, Figma, GitLab, Slack, Jira, Confluence, Adobe ColdFusion
Paradigms
RESTful Development, REST, Scrum, UI Design, Continuous Integration (CI), Continuous Delivery (CD)
Other
Front-end, Material Design, Front-end Development, Responsive UI, React Hooks, UI Components, React Components, Storybook, API Integration, Axios, Responsive Web Apps, APIs, DOM, Startups
Storage
NoSQL, MongoDB, MySQL
Platforms
Windows, MacOS, Amazon Web Services (AWS), Visual Studio Code (VS Code)
Education
1999 - 2004
Master's Degree in Computer Science, Applied Mathematics, and Technical Physics
Technical University of Lodz - Łódź, Poland
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