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Summary

Expertise

Project Highlights

Education

Agency

MK

English:

Advanced

Mateusz K.

vetted by Youteam

Vetted by YouTeam

Poland

UTC +01:00

Europe/Warsaw

English:

Advanced

Mateusz is a Senior Frontend Developer with expertise in React, leading projects from design to deployment for optimized, high-quality user experience

- I created from scratch a frontend ETL application to process data, leveraging D3.js for graphing and Canvas/Konva for dynamic, graph-based interfaces, enabling visually intuitive data insights. - For a telecommunications client, I built another ETL application from scratch, utilizing SVG technology for high-performance, graph-based data visualizations central to the application. - I designed and implemented a telecommunications network alarm system early in my career, gaining foundational experience in real-time, mission-critical systems. - I led the development and optimization of high-traffic, scalable frontends using React, improving load times by 300% on key projects. - I actively mentor junior developers in frontend technologies, particularly React, promoting best practices and fostering a culture of growth and collaboration. - I am constantly expanding my knowledge and seeking out non-standard solutions, bringing innovative approaches to each project.

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Expertise

Years of commercial development experience

8 years of experience

Core technologies

React.js 6 years
JavaScript 7 years
Redux 5 years
CSS 8 years
HTML 8 years
Next.js 4 years

Other technologies

AngularJS
SVG
TypeScript
UI
UX
Scrum
Docker
Team Lead
GraphQL
Fluture
Ramda
Next.js

Project Highlights

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Senior Front End Developer

ElisaPolystar

Feb `18 - Present

7 years

As a Senior Frontend Developer at Elisa Polystar, I led the frontend development within a React-centric environment, focusing on high-performance, scalable applications. My responsibilities encompassed end-to-end project ownership—from planning and technology selection to deployment and optimization. I worked closely with cross-functional teams and clients to understand project requirements, consulting on UI/UX best practices to deliver intuitive, user-friendly interfaces.

Responsibilities & achievements

Leading frontend architecture for large-scale projects, selecting technologies that enhance scalability, performance, and maintainability. Creating data processing applications from scratch, including a front-end ETL application for data visualization, utilizing D3.js, Canvas/Konva, and SVG technologies. Enhancing user experience by developing data-driven visualizations for telecommunication data, improving interaction with complex data sets. Mentoring junior developers on best practices in React, fostering a collaborative environment focused on growth and innovation.

D3.js
JavaScript
React.js
SVG
Redux
GraphQL
Fluture
Ramda
Redux-saga
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Fullstack Developer

Nokia

Mar `16 - Mar `18

2 years

As a Fullstack Developer at Nokia, I contributed to the development of a telecommunications telemetry system, combining an Angular frontend with a Java backend. My role focused on building real-time data visualization interfaces and ensuring seamless integration between the frontend and backend, optimizing performance and enhancing data accessibility for end users.

Responsibilities & achievements

Developing real-time data visualization tools using Angular, improving user interaction and data insight capabilities. Ensuring smooth frontend-backend integration with Java, enabling reliable and efficient data flow and system functionality. Collaborating closely with cross-functional teams to address complex technical requirements and provide end-to-end solutions. Building high-performance, interactive dashboards for telecommunications data, delivering essential insights to clients and internal stakeholders.

AngularJS
Java
JavaScript
Spring
TypeScript
Docker
Microservices
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Java Developer

Newind

Sep `15 - Mar `16

6 months

At Newind, I worked as a Java Developer, contributing to a team that developed a form-based application for the Ministry of Health. My primary focus was on implementing solutions that ensured data security and regulatory compliance, given the sensitive nature of the health information managed within the application.

Responsibilities & achievements

Developing secure, compliant application features as part of a form-based system for handling health data. Collaborating in a full-stack environment, addressing both backend logic and data handling to meet strict regulatory standards. Implementing solutions aligned with industry standards for data protection, ensuring privacy and reliability. Enhancing application functionality for a seamless user experience, with attention to detail and user accessibility.

Java
JavaScript
Spring Boot
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Automation Test Developer - Javascript

Exence

Jul `15 - Sep `15

2 months

As an Automation Tester at Exence, I was responsible for designing, implementing, and maintaining automated tests to ensure the reliability and quality of data transmission through a data bus system. My role required a strong focus on precision and efficiency, as the data bus was central to the system's operations, handling high volumes of critical data.

Responsibilities & achievements

Developing and executing automated test cases to verify the accuracy and integrity of data transmission. Implementing continuous testing strategies, ensuring consistent data quality and system stability. Identifying and troubleshooting issues in data flow, proactively contributing to system resilience. Collaborating with cross-functional teams to enhance the test strategy, aligning with broader project goals.

AngularJS
JavaScript
Selenium
Protractor
Webdriver.io
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Junior Java Developer

4Soft

Mar `15 - Jul `15

4 months

As a Junior Java Developer at 4Soft, I was responsible for developing a simple CRUD (Create, Read, Update, Delete) application for a private client. This project provided me with hands-on experience in full-stack development, focusing on the implementation of core features and ensuring user-friendly design.

Responsibilities & achievements

Designing and implementing core CRUD functionality using Java and the Spring Boot framework, ensuring efficient data management and application performance. Creating an intuitive user interface to facilitate a seamless experience for end users. Collaborating with team members to align application design and functionality with client expectations. Building foundational knowledge in full-stack development, laying the groundwork for further growth in backend and frontend skills.

Java
JavaScript
Spring

Education

Higher education in Computer Science

Agency

agency #3073

10-50

GMT+1

Wrocław/Poland, Warsaw/Poland

Core Expertise

AngularJS
Big Data Architects
Cloud Engineer
Java
JavaScript
Kotlin
Kubernetes
React.js
Scala
Spring
Docker
Spring Boot
Blockchain

Industries

E-Commerce & Retail, Internet & Telecom, Blockchain & Cryptocurrency, Big Data

Want to hire this engineer?

Check if Mateusz is available