Michal K.

Fullstack developer

Michal is a Fullstack Developer with over 12 years of experience designing and building web services. He specializes in JavaScript and TypeScript, with expertise in React.js, Node.js, and AWS, delivering reliable, scalable, and efficient solutions.

He has led development teams on complex projects, including rescuing a high-pressure initiative at HyperInteractive. His work included integrating MQTT messaging, optimizing database queries, and implementing autoscaling, significantly improving system performance and enabling successful follow-up projects.

Holding a Master’s degree in Computer Science, Michal combines deep technical expertise with strong leadership skills, consistently delivering high-performance solutions. He thrives in challenging environments and drives innovation across web development projects.

Main expertise

  • JavaScript
    JavaScript 12 years
  • React.js
    React.js 9 years
  • Next.js
    Next.js 9 years

Other skills

  • AWS
    AWS 9 years
  • MQTT 5 years
  • GraphQL
    GraphQL 5 years
Michal

Michal K.

Poland

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Selected experience

Employment

  • Full-Stack Software Engineer

    Resolution - 1 year 4 months

    • Was responsible for contributing to the development of Custom Charts, a reporting tool for Jira and Confluence, including continuous feature improvements and frontend–backend integration.
    • Ensured high code quality while expanding and maintaining product functionality.
    • Participated in code reviews and refinement meetings, and implemented, upgraded, and maintained frontend features integrated with backend services.
    • Improved product performance and user experience, contributing to increased customer satisfaction.

    Technologies:

    • Technologies:
    • JavaScript JavaScript
    • React.js React.js
    • MongoDB MongoDB
    • Docker Docker
    • AWS AWS
    • HTML HTML
    • CSS CSS
    • TypeScript TypeScript
    • UI
    • Node.js Node.js
    • Express.js Express.js
    • GraphQL GraphQL
    • SQL SQL
    • Next.js Next.js
    • Terraform Terraform
    • HTML / CSS
    • tRPC tRPC

  • Full-Stack Software Engineer

    Old Street Solutions (acquired later by Tempo) - 1 year

    • Contributed to the development of Custom Charts, a reporting tool for Jira & Confluence, involving continuous feature enhancements and frontend-backend integration.
    • Ensured high code quality while extending product functionality.
    • Participated in code reviews and refinement meetings, implemented and upgraded frontend features integrated with backend services.
    • Enhanced product performance and user experience, leading to increased customer satisfaction.

    Technologies:

    • Technologies:
    • JavaScript JavaScript
    • React.js React.js
    • Docker Docker
    • AWS AWS
    • HTML HTML
    • CSS CSS
    • TypeScript TypeScript
    • UI
    • Node.js Node.js
    • SQL SQL
    • Redux.js Redux.js
    • Next.js Next.js
    • HTML / CSS
    • Atlassian Confluence Data Center

  • Technical Lead

    Hyperinteractive Studio - 2 years 4 months

    • Successfully managed a failing project with tight deadlines and high client expectations.
    • Identified bottlenecks, refactored APIs and UI, conducted stress tests, monitored live performance, and led technical workshops.
    • Led creative projects involving blockchain, multimedia streaming, and 3D environments, managing project scoping, estimation, and technology stack selection.
    • Delivered projects successfully, resulting in additional contracts and positive client feedback.

    Technologies:

    • Technologies:
    • JavaScript JavaScript
    • React.js React.js
    • MongoDB MongoDB
    • Docker Docker
    • PostgreSQL PostgreSQL
    • AWS AWS
    • Redis Redis
    • HTML HTML
    • CSS CSS
    • TypeScript TypeScript
    • UI
    • Node.js Node.js
    • Express.js Express.js
    • GraphQL GraphQL
    • SQL SQL
    • Next.js Next.js
    • Nest.js Nest.js
    • HTML / CSS
    • MQTT
    • Three.js Three.js
    • Blockchain Blockchain

  • Full-Stack Software Engineer / Team Lead

    Massive Pixel Creation - 1 year

    • Delivered projects for diverse clients at a software house, ranging from custom integrations and modifications of existing software to managing the development of entire projects from scratch.
    • Worked on a variety of projects, including custom chat integration with external company software, WordPress and WooCommerce customizations, and finalizing critical features on a coaching platform prior to its official release.
    • Managed the full project lifecycle, from requirements gathering to CI/CD setup.
    • Recruited and mentored developers, and developed a skills roadmap for the team.

    Technologies:

    • Technologies:
    • PHP PHP
    • JavaScript JavaScript
    • React.js React.js
    • MongoDB MongoDB
    • Docker Docker
    • PostgreSQL PostgreSQL
    • AWS AWS
    • Redis Redis
    • HTML HTML
    • CSS CSS
    • TypeScript TypeScript
    • UI
    • Node.js Node.js
    • Express.js Express.js
    • WordPress WordPress
    • WooCommerce WooCommerce
    • SQL SQL
    • Next.js Next.js
    • Tailwind Tailwind
    • HTML / CSS
    • Helm Helm
    • MQTT
    • Strapi Strapi

  • Full-Stack Developer

    Open Tangerine - 3 years

    • Worked on existing and prepared new projects from scratch in PHP (CakePHP), React, React Native (Expo)

    • Worked on a mobile game featuring geolocation and a rivalry mechanism in real-world areas.

    • Worked on a data analysis project with a creative interface (draggable windows, terminal-like interface to manage workspaces, interactive graphs with specific data from queries, etc.

    Technologies:

    • Technologies:
    • PHP PHP
    • MySQL MySQL
    • CakePHP CakePHP
    • JavaScript JavaScript
    • React.js React.js
    • MongoDB MongoDB
    • Docker Docker
    • PostgreSQL PostgreSQL
    • AWS AWS
    • HTML HTML
    • CSS CSS
    • Bootstrap Bootstrap
    • TypeScript TypeScript
    • UI
    • Node.js Node.js
    • React Native React Native
    • Express.js Express.js
    • WordPress WordPress
    • WooCommerce WooCommerce
    • SQL SQL
    • Next.js Next.js
    • Firebase Firebase
    • SQLite SQLite
    • Mobile
    • HTML / CSS
    • Expo Expo

  • Full-Stack Developer

    Inspire Labs - 1 year 7 months

    • Created website and mail templates.

    • Created templates and plugins for Wordpress and WooCommerce.

    • Created websites/applications from scratch in Zend Framework and Laravel.

    • Various API integration (payment gateways, scraping services, notification services, etc).

    Technologies:

    • Technologies:
    • PHP PHP
    • Laravel Laravel
    • MySQL MySQL
    • JavaScript JavaScript
    • HTML HTML
    • CSS CSS
    • Bootstrap Bootstrap
    • UI
    • Zend Zend
    • WordPress WordPress
    • WooCommerce WooCommerce
    • SQL SQL
    • API
    • REST API REST API
    • HTML / CSS
    • Strapi Strapi

  • Full-Stack Developer

    Targi Brno - 3 years

    • Created web services in the Yii Framework.

    • Integration of services like Facebook, etc.

    • designed SQL schema.

    • Created templates and plugins for WordPress.

    • Various API integration.

    Technologies:

    • Technologies:
    • PHP PHP
    • Yii Yii
    • MySQL MySQL
    • JavaScript JavaScript
    • HTML HTML
    • CSS CSS
    • Bootstrap Bootstrap
    • UI
    • WordPress WordPress
    • WooCommerce WooCommerce
    • SQL SQL
    • API
    • REST API REST API
    • HTML / CSS

Education

  • MSc.Computer Science

    Czestochowa University of Technology · 2012 - 2013

  • BSc.Computer Science

    Czestochowa University of Technology · 2008 - 2012

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