Chris H.

Fullstack developer

Chris is a Fullstack Developer with over ten years of commercial experience, specializing in frontend-focused development with React while maintaining strong backend capabilities. He is recognized for building performant, user-centric applications that combine technical excellence with practical functionality.

Among his notable achievements, Chris developed the Office Insights application at ProptechCore—a data-driven platform designed to help organizations monitor and reduce energy consumption. This project highlights his ability to deliver high-quality engineering solutions with tangible real-world impact.

Having collaborated with Proxify for several years, Chris has consistently received outstanding feedback for his expertise, professionalism, and contributions to client projects.

Main expertise

  • React.js
    React.js 7 years
  • JavaScript
    JavaScript 10 years
  • HTML
    HTML 10 years

Other skills

  • Agile
    Agile 4 years
  • MSSQL
    MSSQL 4 years
  • Vite
    Vite 3 years
Chris

Chris H.

Poland

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Selected experience

Employment

  • Senior Frontend Developer

    BIM Virtual, now decarbAI by ProptechCore (Sweden, remote) - 4 years 6 months

    Big Room

    • Redesigned and modernized a task management application, improving usability, workflow efficiency, and overall user experience.

    PropTech Core

    • Developed an application to provision and monitor smart devices across commercial and residential projects, integrating IoT devices into existing building infrastructure and enabling real-time control.

    PropTech Assistant

    • Built a companion application from scratch, providing comprehensive management for users, devices, organizations, and buildings, with a focus on scalability and modular architecture.

    Office Insights

    • Led the development of a data-driven energy monitoring platform, aggregating and visualizing data from building energy meters to deliver actionable insights for energy savings.

    Amp App

    • Created an energy usage tracking application for commercial and residential users, delivering real-time analytics and practical insights to help reduce electricity consumption.

    Technologies:

    • Technologies:
    • JavaScript JavaScript
    • React.js React.js
    • Docker Docker
    • NGINX NGINX
    • HTML HTML
    • CSS CSS
    • TypeScript TypeScript
    • Postman Postman
    • Redux.js Redux.js
    • Figma Figma
    • Agile Agile
    • Git Git
    • OAuth2 OAuth2
    • JSON JSON
    • Material-UI Material-UI
    • REST API REST API
    • Cypress Cypress
    • HTML / CSS
    • MQTT
    • Jest Jest
    • Webpack Webpack
    • Ramda.js Ramda.js
    • Storybook Storybook
    • Internet of Things (IoT)
    • Vite Vite
    • JWT JWT

  • Frontend Developer

    Golden Keys - 7 years 2 months

    • Implemented a website and CMS admin page from scratch for a local real estate company.
    • Managed the project through the maintenance phase.

    Technologies:

    • Technologies:
    • JavaScript JavaScript
    • React.js React.js
    • AWS AWS
    • HTML HTML
    • CSS CSS
    • TypeScript TypeScript
    • Node.js Node.js
    • AWS Lambda AWS Lambda
    • AWS S3 AWS S3
    • Redux.js Redux.js
    • DynamoDB DynamoDB
    • Git Git
    • OAuth2 OAuth2
    • JSON JSON
    • REST API REST API
    • HTML / CSS
    • Jest Jest
    • Ramda.js Ramda.js
    • JWT JWT

  • Fullstack developer

    Tech Controllers - 3 years

    eHome – Smart Home Application

    • Developed a full-featured application for managing smart home environments.
    • Integrated Google’s Blockly visual programming to simplify automation rule creation for end users.

    Alexa / Google Assistant Integration

    • Designed and implemented voice control functionality for the eModule system.
    • Integrated the system with Amazon Echo and Google Assistant, enabling voice-based control of home automation and temperature settings.

    eModule – Home Temperature Control System

    • Contributed to a system for controlling room temperature across residential environments.
    • Developed a public HTTP API for external systems to access and manage heating/cooling schedules.

    Modules24 – Internal Management Application

    • Built an internal tool for customer service teams to monitor and manage the eModule system.
    • Implemented an administrative panel to manage user accounts, improving support efficiency and operational control.

    Technologies:

    • Technologies:
    • JavaScript JavaScript
    • Angular.js Angular.js
    • React.js React.js
    • PostgreSQL PostgreSQL
    • Ruby Ruby
    • NGINX NGINX
    • HTML HTML
    • CSS CSS
    • Node.js Node.js
    • Java Java
    • Jenkins Jenkins
    • Redux.js Redux.js
    • DevOps DevOps
    • Git Git
    • OAuth2 OAuth2
    • JSON JSON
    • Material-UI Material-UI
    • REST API REST API
    • Cypress Cypress
    • Ramda.js Ramda.js
    • Storybook Storybook
    • Internet of Things (IoT)
    • JWT JWT

  • Fullstack developer

    Tema Komputer - 1 year 11 months

    • Developed the full system from scratch, delivering core sales functionality tailored for the clothing industry.
    • Designed and implemented a CRM system from the ground up to support customer engagement and relationship management.
    • Contributed to a platform supporting dealership operations and vehicle servicing.
    • Implemented parts catalog import and printout functionality for essential dealership documentation.
    • Developed user notifications and order summary features, including printable formats.
    • Refactored the codebase to improve maintainability, performance, and overall system quality.
    • Implemented printout functionality for transaction documentation.
    • Developed database backup features to ensure data integrity and recovery.
    • Maintained and extended the wholesale management platform, implementing new features and improving system efficiency.

    Technologies:

    • Technologies:
    • JavaScript JavaScript
    • HTML HTML
    • CSS CSS
    • jQuery jQuery
    • TypeScript TypeScript
    • MSSQL MSSQL
    • C# C#
    • Oracle Oracle
    • .NET .NET
    • Entity Framework Entity Framework
    • ASP.NET ASP.NET
    • .NET Core .NET Core
    • Angular Angular
    • Git Git
    • OAuth2 OAuth2
    • JSON JSON
    • SQLite SQLite
    • SVN SVN
    • REST API REST API
    • Dapper Dapper
    • DevExpress DevExpress

Education

  • BSc.Astronomy, physics and mathematics

    North Island College (Canada) · 2011 - 2013

  • Standalone courseProgramming course in Java

    Camosun College (Canada) · 2010 - 2011

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