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Location

Poland

Rate

$14  / per hour

Years of experience

14+

About

I am a seasoned Senior Frontend Developer with over a decade of experience, proficient in multiple frontend technologies, including Angular, React, Vue.js, TypeScript, and more. Currently, I am working at HeroDOT, where I have led the development of sophisticated applications, such as a tool for analyzing key infrastructure points for FIFA World Cup bids and a blockchain-based event management system. I am adept at creating advanced computational tools that integrate a variety of data sources, ensuring the security and efficiency of large-scale applications. My professional journey has included roles such as Lead Frontend Developer at PlanBe.eco, where I developed an application for calculating and optimizing carbon footprints, and at CANON Ophthalmic Technologies, where I created an AI-based tool for analyzing ocular MRI images. My previous experience includes working at GRG Studios OÜ on remote diagnostic tools for learning differences, and Unity S.A, where I focused on e-commerce platforms. My technical expertise spans various frameworks and libraries, enabling me to deliver high-quality, user-centric applications across different industries.

Tech Stack

Frontend, Angular, CSS, Docker, HTML, JavaScript, PHP, React, SQL, Typescript, Vue.Js

Experience

  • Spearheading the development of complex frontend applications, ensuring seamless user experiences and robust performance.
  • Overseeing project timelines, coordinating with cross-functional teams, and managing resources to deliver projects on time and within scope.
  • Implementing and integrating advanced technologies such as blockchain for secure payment systems, AI for diagnostic tools, and various frontend frameworks for dynamic applications.
  • Working closely with designers using tools like Figma and Zeplin to translate design specifications into functional and visually appealing interfaces.
  • Analyzing and optimizing application performance to enhance speed, responsiveness, and user satisfaction.
  • Conducting thorough code reviews, implementing best practices, and utilizing testing frameworks like Karma, Playwright, and Cypress to ensure high-quality, bug-free code.
  • Engaging with clients and stakeholders to gather requirements, provide updates, and ensure that the final product aligns with their expectations and business goals.

Employment history

Senior Frontend Developer, HeroDOT March 2022 - present

• Creating sophisticated applications that analyze and compare key infrastructure elements, essential for high-stakes decisions like hosting the FIFA World Cup.
• Incorporating diverse data sources, such as demographic data, climatic conditions, and infrastructure details, to provide comprehensive analysis for decision-making.
• Designing and implementing integrated event management systems with advanced payment platforms using blockchain technology to ensure secure and transparent transactions.
• Developing features for real-time tracking of participation and coordination of event logistics, enhancing the efficiency and effectiveness of event management.
• Creating analytical systems that use advanced algorithms for the segregation, classification, and interpretation of financial documents to monitor cash flows, identify savings, and optimize operational costs.
• Implementing security measures within applications to ensure the integrity and transparency of transactions, particularly in blockchain-based platforms.
• Ensuring the applications provide user-friendly interfaces and seamless user experiences, facilitating ease of use for both event organizers and participants.

Lead Frontend Developer, PlanBe.eco December 2022 - March 2023

• Creating sophisticated applications that accurately calculate, analyze, and optimize a company’s carbon footprint based on its operations and manufacturing processes.
• Facilitating in-depth analysis of emission sources to identify areas for potential improvement.
• Offering actionable insights and recommendations aimed at reducing a company’s environmental impact.
• Developing and implementing recommendations on sustainable development strategies to help companies achieve their environmental goals.
• Providing performance indicators to measure the effectiveness of implemented sustainable development solutions.
• Designing tools that not only calculate but also help optimize a company’s carbon footprint, contributing to overall environmental sustainability efforts.
• Integrating various data points and conducting thorough analyses to provide comprehensive reports on a company’s environmental impact.

Lead Frontend Developer, CANON Ophthalmic Technologies October 2021 - March 2022

• Creating advanced digital tools that leverage artificial intelligence technology for the interpretation and analysis of eye MRI tomograms.
• Integrating with databases containing sample tomograms to enable the application to learn and refine its algorithms for improved accuracy.
• Designing and refining algorithms to automatically recognize and indicate potential ocular pathologies based on MRI data.
• Implementing features that allow the application to automatically identify and highlight potential eye pathologies.
• Ensuring the accurate transmission of recognized pathology data to the primary AI system for further detailed analysis and diagnosis.
• Working with medical experts to manually highlight boundaries of eye structures in sample tomograms, aiding the machine learning process.
• Continuously improving the diagnostic accuracy of the application through iterative learning and integration of expert-validated data.

Senior Frontend Develope, GRG Studios OÜ December 2020 - June 2021

• Creating innovative applications that allow for the remote diagnosis and monitoring of learning difficulties such as ADHD and dyslexia.
• Leveraging artificial intelligence technology and machine learning algorithms to provide precise analyses of students’ behavior and progress.
• Enabling experts to conduct evaluations and provide support remotely, eliminating the need for in-person meetings.
• Implementing real-time data analysis features to monitor students’ progress and adjust support strategies as needed.
• Designing tools that accurately analyze and interpret students’ behavior to aid in the diagnosis of learning differences.
• Providing functionalities that enable specialists to adjust educational support strategies based on real-time data and analyses.
• Continuously improving the application to enhance educational outcomes for students with learning differences through precise and data-driven insights.

Frontend Developer, Unity S.A January 2019 - September 2021

• Designing and implementing robust e-commerce platforms for the computer industry, ensuring seamless user experiences and high performance.
• Working closely with back-end developers to integrate APIs and services, ensuring smooth data flow and functionality across the platform.
• Translating design mockups from tools like Figma and Zeplin into responsive, user-friendly interfaces using HTML, CSS, and JavaScript.
• Enhancing website speed and performance through efficient coding practices, asset optimization, and minimizing load times.
• Ensuring that e-commerce platforms are compatible across different browsers and devices, providing a consistent user experience.
• Creating responsive layouts that adapt to various screen sizes, enhancing the user experience on mobile and tablet devices.
• Conducting thorough testing and debugging of frontend code using tools like Cypress and Playwright to ensure the reliability and quality of the platforms.
• Following best practices in coding, including code reviews and adhering to coding standards, to maintain high-quality codebases.
• Utilizing version control systems like Git to manage code repositories, track changes, and collaborate with other developers efficiently.
• Developing new features and functionalities based on client requirements and feedback, continuously improving the platform’s capabilities.
• Interacting with clients to gather requirements, provide updates, and ensure that the final product meets their expectations and needs.
• Implementing SEO best practices to enhance the visibility and search engine ranking of e-commerce platforms.
• Ensuring that the e-commerce platforms adhere to web accessibility standards, making them usable for people with disabilities.
• Creating and maintaining comprehensive documentation for the codebase, features, and functionalities to facilitate future development and maintenance.

Senior Frontend Developer, Divante Sp. z o.o January 2018 - January 2019

• Leading and mentoring junior developers, providing guidance and support to enhance their skills and ensure high-quality code output.
• Developing customized e-commerce solutions tailored to the specific needs of various sectors, including travel, children’s toys, and fashion/footwear.
• Utilizing advanced frontend technologies such as Vue.js, React, Angular, and TypeScript to build dynamic and interactive user interfaces.
• Integrating e-commerce platforms with third-party services and APIs, such as payment gateways, inventory management systems, and customer relationship management tools.
• Continuously improving the user experience by implementing feedback, conducting usability testing, and refining interface designs.
• Participating in agile development practices, including sprint planning, daily stand-ups, and retrospectives, to ensure efficient project management and delivery.

Frontend Developer, Astek Polska sp. z o.o. November 2013 - December 2017

• Crafting advanced charts and tools for data analysis that transform raw data into clear, insightful visualizations, facilitating profound understanding and informed decision-making.
• Designing and implementing integrated applications for effective user management within medical corporations, emphasizing security, permissions, and efficient internal communication.
• Developing modern platforms focused on the centralization, analysis, and monitoring of patient data to optimize healthcare processes and enhance the quality of medical services.
• Emphasizing the security and permissions aspects of user management applications to protect sensitive medical data and ensure compliance with regulations.
• Creating tools that enable the optimization of healthcare processes through improved data management and analysis.
• Implementing solutions that enhance the quality of medical services by providing comprehensive and accurate patient information management.
• Developing applications that improve the efficiency of internal communication within medical structures, ensuring seamless information flow and coordination.

Fullstack Developer, Panek S.A. July 2013 - October 2013

• Designing and implementing advanced internal systems for the effective monitoring, management, and maintenance of vehicle fleets.
• Creating tools for detailed analysis of operational parameters to enhance fleet performance and efficiency.
• Developing features for planning services and optimizing costs associated with fleet maintenance.
• Building modern external platforms for car reservations, ensuring a user-friendly interface and smooth user experience.
• Designing systems with a focus on user comfort, offering a clear interface and fast reservation processes.
• Integrating secure payment methods into car reservation systems to ensure transaction safety and user trust.
• Developing applications that facilitate cost optimization for fleet maintenance, contributing to overall operational efficiency.

Frontend Developer, LTB Sp. z o.o. February 2013 - June 2013

• Designing and developing custom WordPress themes and plugins to meet specific client requirements.
• Implementing SEO best practices to enhance website visibility and improve search engine rankings, ensuring higher traffic and better user engagement.
• Creating responsive websites that provide a seamless user experience across various devices, including desktops, tablets, and mobile phones.
• Ensuring websites function correctly across multiple browsers, conducting thorough testing and debugging to address compatibility issues.
• Working closely with clients to gather requirements, provide updates, and ensure the final website aligns with their vision and goals.
• Enhancing website performance by optimizing code, compressing images, and utilizing caching techniques to ensure fast load times and smooth user experience.

Fullstack Developer, GCHG s.c. September 2011 - January 2013

• Designing and implementing advanced systems for gathering and processing historical data on sports results.
• Utilizing algorithms and analysis methods to deeply analyze historical sports data, facilitating the forecasting of future achievements in various sports disciplines.
• Creating and refining algorithms to enhance the accuracy and effectiveness of data analysis and forecasting.
• Providing tools and insights that aid experts in making informed, data-driven decisions based on comprehensive analysis.
• Implementing various analysis methods to ensure thorough and accurate processing of sports data.
• Developing systems that optimize the processing and analysis of large datasets, ensuring efficiency and accuracy.
• Designing applications that support experts in sports disciplines by providing actionable insights and reliable forecasts.

Fullstack Developer, P.W. Fiskas Services August 2010 - September 2011,

• Designing and implementing advanced applications for the quick and efficient dispatch of text messages to mobile devices.
• Ensuring the platform is optimized for speed and reliability in delivering text messages.
• Creating features that enhance user engagement by offering unique benefits, discounts, and loyalty programs for cash register and printer users.
• Developing applications that seamlessly integrate with cash registers and printers to provide added value to users.
• Designing platforms that enhance the daily use of devices through exclusive offers and rewards, increasing user satisfaction and loyalty.
• Creating intuitive and user-friendly interfaces for both the text messaging platform and the benefits application.
• Ensuring that the communication platform complies with relevant security standards and regulations to protect user data and maintain privacy.

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