Mateusz Woskowicz

Mateusz Woskowicz

Senior Frontend Developer

Not looking for a job right now

Featured Projects

samsung

"Mobilne Rozgrywki Galaxy" Website

December 2021

pko

Contest Landing Page for PKO Bank Polski

October 2024

instreamlyWordpress

Website Migration from WordPress to Next.js

June 2022

digitalCreatorsCommunity

DCC E-learning Platform

October 2023

Experience

Contest Landing Page for PKO Bank Polski

October 2024-March 2025-5 months

In this project, I combined the roles of Frontend Developer and Project Manager. I was responsible for both the development of the website and overseeing the project process and subcontractors.

Featured:

  • Security:

    Ensuring a high level of application security, which is essential for a project carried out for a bank.

  • CMS Integration:

    One of the client’s requirements was integration with a CMS that allowed for content management and the ability to immediately shut down the page.

  • Team Management:

    Oversight of the project process and team management.

Technologies:

TypeScript, Next.js, Sanity.io, TailwindCSS, AWS

Website – Galaxy Mobile Tournaments

December 2021-January 2022-2 months

I completed this project as a subcontractor. My task was to implement the website using Node.js, Express.js, and Pug. I was responsible for implementing the design from Figma and integrating the frontend with the backend. My case study.

Technologies:

Node.js, Express.js, Pug, SCSS

Senior Frontend Developer

June 2024-Present-a year

As a Senior Frontend Developer, I create and maintain applications using Next.js, Node.js, and AWS. I’m increasingly involved in designing application architecture and actively participate in product development planning. I focus particularly on innovative solutions using AI and on projects that have a business growth impact.

Featured:

  • Custom Sponsorship Mechanisms – Netflix, PlayStation, Pepsi and others:

    Implementation of tailored solutions for displaying sponsorships during live broadcasts on Twitch, YouTube or Kick.

  • Implementing AI Solutions:

    I bring my passion for AI into my daily work by implementing both internal and external solutions, such as AI Agents, chatbots and applications.

Technologies:

TypeScript, Next.js, React.js, MySQL, Node.js, Cypress, Jest, AWS, Docker, TailwindCSS

Frontend Developer

October 2021-June 2024-3 years

As a Frontend Developer, I significantly expanded my skill set by taking on increasingly large projects. I focused on developing towards Fullstack. I learned new technologies such as TypeScript and Next.js, and began working independently on the backend using Node.js and MySQL databases.

Featured:

  • AI Voice Recognition Mechanism – Monte Snack:

    I created a mechanism for automatically displaying sponsorships during Twitch, YouTube and Kick streams based on words spoken by streamers. The platform NowyMarketing published an article about it.

  • Fullstack Development Growth:

    I developed backend and database skills, which enabled me to independently lead end-to-end projects.

Technologies:

TypeScript, Next.js, React.js, MySQL, Node.js, Cypress, Jest, AWS, Docker, TailwindCSS

Junior Frontend Developer

December 2020-October 2021-10 months

I initially joined the team as a freelancer, but quickly received a full-time offer to co-develop the application. It was a time of intensive learning – I took my first steps with React.js, backend development using Node.js, and MySQL databases.

Featured:

  • Website Migration from Pug to WordPress:

    I independently implemented the new website, which was my first major project at the company.

Technologies:

React.js, Wordpress, Node.js, Express.js, MySQL, SCSS

Co-Founder & AI Fullstack Developer

October 2024-Present-6 months

A platform that uses AI to recommend games on Roblox and allows users to earn money in-game. I am co-creating the project, among others, with the founders of my current full-time job.

Featured:

  • AI Recommendation System:

    I developed a proprietary recommendation system based on AI, RAG, and vector databases. The system uses the "Collaborative Filtering" method to find the best games for users based on their demographics, game history, and other users.

  • Internal Dashboard:

    I created an internal dashboard that enables editing and managing campaigns, user management, payment handling, and generating reports for clients.

Technologies:

TypeScript, Next.js, OpenAI, Pinecone, AWS Bedrock, TailwindCSS

Founder & Senior Frontend Developer

August 2021-Present-4 years

For several years, I’ve been running my own business where I create websites and applications. I independently acquire clients and manage a team of subcontractors. I’ve completed dozens of projects — from simple websites to advanced applications using databases. Project website.

Featured:

  • Comprehensive Client Support:

    I handle the entire process — from first contact, through design, to implementation and technical support.

  • Team Management:

    I coordinate the work of subcontractors, ensuring timely project delivery.

Technologies:

Wordpress, Next.js, TypeScript, AWS, PHP, SCSS, TailwindCSS

About me

Hi! 👋

I am a Senior Frontend Developer with over 5 years of commercial experience. I specialize in Next.js, React.js, TypeScript, as well as Node.js and MySQL.

On a daily basis, I work at inStreamly, where I implement innovative solutions together with the product and business teams. One of the key areas of my work is implementing AI solutions and supporting team development.

I have collaborated with brands such as Samsung and PKO Bank Polski as a freelancer. In my spare time, I run my own business mwebs, where I create websites and applications for dozens of clients.

In my work, I take full responsibility (DRI) for the tasks entrusted to me, treating each project as if it were my own. I value honest and constructive feedback (Feedback) and believe that kindness and mutual respect (NVC) are key to team success.

My Technology Stack:

  • Frontend:Next.js, React.js, TypeScript
  • Backend: Node.js, TypeScript, Express.js
  • Database: MySQL, PostgreSQL
  • AI: Claude, SuperMaven, v0, AWS Bedrock, OpenAI API
  • Tests: Cypress, Jest, Playwright
  • Styling: TailwindCSS, Shadcn UI, SCSS
  • Tools: Git, Github, Webstorm, Cursor, Docker, Figma, ClickUp
  • Cloud: AWS
Mateusz Woskowicz

Certyfikaty

Microsoft Technology Associate

Software Development Fundamentals

Microsoft Technology Associate

Database Administration Fundamentals

Microsoft Technology Associate

HTML5 Application Development Fundamentals

Testimonials

Mateusz has been working with us for almost five years now, and I’ve seen enormous progress during that time. From a junior to someone who not only independently delivers complex projects (like a new website with cool features) but also manages the process and ensures its quality.

Mateusz doesn’t just “write code” – he approaches tasks comprehensively and is always reliable :) And on top of that, he shows great patience, which is very valuable during complex implementations and the somewhat chaotic life of a startup.

Wiktoria Wójcik
Wiktoria Wójcik
Co-founder - inStreamly

I’ve worked (and still work) with Mateusz on many projects and have never had a single bad thing to say about his work. Always on time. Always with a focus on quality, and perhaps most importantly: always with a focus on effective communication.

I recommend him 100% for everything related to websites, applications, AI, and technology.

Norbert Uselis
Norbert Uselis
Business Strategist

I collaborated with Mateusz over the past 3 years on building an e-learning platform and a marketing agency.

Mateusz is definitely a trustworthy and responsible person, which he proved to me time and again throughout our work together.

I also really appreciate that he often managed to surprise me positively and went above and beyond what I expected.

He would often take initiative and advise me on how I could do things better.

Robert Szewczyk
Robert Szewczyk
Freelance marketer & copywriter

Want to work with me?

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