About me

Frontend engineer with 10+ years of experience building web applications, Smart TV/STB platforms, and cross-platform IPTV/VOD frameworks. Specialized in React, TypeScript, and Next.js with a track record of legacy migrations, performance optimization, and technical leadership across international telecom and food-delivery products.

Location: Wrocław, Poland
Email: andrzej.blazejowski@gmail.com
Phone: (+48) 733 745 795

Andrzej Błażejowski

Skills & Education

React · Next.js · TypeScript · JavaScript · Redux · RTK · Node.js · HTML5 · CSS · Sass · Webpack · Turbopack · SEO · Jest · Storybook · Figma · Git · GitHub · GitLab · Docker · REST API · Leaflet · MapTiler · LightningJS · RDK · Tizen · WebOS · HbbTV · Roku · BrightScript · MQTT · PHP · Drupal · Oracle DB · PL/SQL · MySQL · Agile (Scrum) · Code Review · Unit Testing · PiwikPro · Handlebars.js · jQuery

Engineer — Rzeszów University of Technology + Huazhong University + Wyższa Szkoła Biznesu – National Louis University
2012-08 – 2024-03

LanguageListeningReadingSpeakingWriting
Polish (native)C2C2C2C2
EnglishB2B2B1B2

Featured Projects

Highlighted work across food delivery, IPTV/VOD, and streaming SDK development.

Global QSR Franchise Operator – Multi-Market Food(mostly pizza) Delivery Platform

Global QSR Franchise Operator – Multi-Market Food(mostly pizza) Delivery Platform

Modernisation of a high-traffic food delivery web application for a leading European restaurant group operating a major international pizza brand across 3 markets, improving maintainability and cost-effectiveness.

The Better Software Group / Spyrosoft BSG · 2020 – current

Enterprise IPTV/VOD Platform – Cross-Platform White-Label Framework

Enterprise IPTV/VOD Platform – Cross-Platform White-Label Framework

Contributed to a cross-platform, white-label IPTV/VOD framework deployed across set-top boxes, PCs, and smartphones for tier-1 international telecom operators across Nordic, Balkans, and Mediterranean markets.

The Better Software Group / Spyrosoft BSG · 2020 – current

Enterprise Video Player SDK – Roku Platform

Enterprise Video Player SDK – Roku Platform

Co-developed a commercial VOD player SDK for the Roku platform from the ground up as part of a 2-engineer team.

The Better Software Group / Spyrosoft BSG · 2020 – current

Work Experience

03/2020 – CurrentWrocław, Poland

Middle / acting as Senior Frontend Developer

The Better Software Group / Spyrosoft BSG

Global QSR Franchise Operator – Multi-Market Food(mostly pizza) Delivery Platform

Modernisation of a high-traffic food delivery web application for a leading European restaurant group operating a major international pizza brand across 3 markets, improving maintainability and cost-effectiveness.

  • Legacy Migration: Upgraded application from Next.js 9 to 16+, Node 14 to 24+, and React 16 to 19, Leaflet raster tiles to MapTiler vector tiles eliminating technical debt.
  • SEO Optimization: Increased visibility by implementing dynamic sitemaps and URL-accessible subpages.
  • Application Maintenance & Stability: Maintained the application, reducing critical SLA issues by ~90% YoY.
Next.jsReactReduxTypeScriptSEOWebpackTurbopackMapTiler

Global QSR Franchise Operator – In-Store Self-Order Kiosk Analytics(mostly burger and fried-chicken brands)

Took ownership of an in-store kiosk analytics system for a leading restaurant franchise operator (major burger and fried-chicken brands), driving integration and delivery to production.

  • Business Intelligence Integration: Implemented user-behavior analytics system to optimise business ROI.
  • Technical Leadership: Mentored engineers on performance and introduced architectural improvements.
  • Quality Assurance & Coverage: Established tracking standards, successfully raising and maintaining data analytics coverage at a 95%+ level.
PiwikProReactReduxTypeScript

BSG Innovation Lab

Greenfield development of a Proof of Concept (POC) VOD application for Tizen Smart TV and RDK environments.

  • Team Upskilling & Mentoring: Mentored a 3-engineer team from scratch on LightningJS and RDK.
  • Architecture & Tooling: Designed core codebase architecture, repository structure, and linting/styling standards.
  • Performance Optimisation: Optimized the application to ensure consistent 60 FPS on hardware-constrained Smart TV/STB platforms.
RDKLightningJSTypeScriptTizen OSSmart TV DevelopmentCanvas Rendering

Enterprise IPTV/VOD Platform – Cross-Platform White-Label Framework

Contributed to a cross-platform, white-label IPTV/VOD framework deployed across set-top boxes, PCs, and smartphones for tier-1 international telecom operators across Nordic, Balkans, and Mediterranean markets.

  • Contract Delivery & Revenue Retention: Resolved legacy flaws (race conditions, network resilience issues), securing a major contract milestone.
  • Cross-Platform Core Development: Co-created the multi-platform framework, including a unified Design System and TV navigation.
  • Performance Engineering: Designed memory management strategies and adaptive animation scaling for low-end STBs.
ReactReduxTypeScriptSmart TV/STBNetwork ResilienceCross-Platform ArchitectureStorybookJestFigma

Enterprise Video Player SDK – Roku Platform

Co-developed a commercial VOD player SDK for the Roku platform from the ground up as part of a 2-engineer team.

  • SDK Architecture & API Alignment: Engineered core BrightScript structure, aligning the public API with web/mobile standards.
  • Advanced Video Capabilities: Implemented DRM protection, closed captions, Adaptive Bitrate Streaming (ABR), and programmatic video ad integration.
  • Test Automation Integration: Architected automated testing via MQTT protocols for remote player control and metadata collection.
  • Technical Documentation: Authored developer documentation, tutorials, and reference apps for enterprise integrators.
BrightScriptRoku SceneGraphMQTTDRMABRProgrammatic Video AdsSDK Architecture
06/2015 – 03/2020Rzeszów, Poland

Frontend Developer / Application Designer

Softsystem Sp. z o.o.

Medical Fleet Management Platform

Contributed to the development and production support of an enterprise fleet management and route optimization platform tailored for time-critical medical logistics and courier networks.

  • Real-Time Route Customization: Engineered a core map feature using Leaflet that allowed dispatchers to dynamically recalculate and edit delivery routes in real-time while couriers were already in transit.
  • Database Performance Optimization: Analyzed and optimized complex PL/SQL database queries and procedures, reducing data retrieval times.
  • Geospatial Data Filtering: Implemented advanced route and path filtering systems within the map interface for hundreds of concurrent medical deliveries.
  • Localization & Internationalization: Standardized application data processing with dynamic floating-point and numerical format switching for cross-regional compatibility.
JavaScriptLeafletPL/SQLOracle DBHTML5CSS3Geospatial DataFleet Logistics
07/2014 – 05/2015Rzeszów, Poland

Frontend Developer

The appCreate Sp. z o.o.

The appCreate – No-Code / App Builder

Took ownership of a web-based mobile app builder platform mid-development after the previous developer's departure, successfully driving the product to its first stable production release.

  • Administration Panel Development: Developed the web admin panel, integrating it with RESTful API to allow non-technical clients to dynamically configure and manage mobile apps.
  • Dynamic UI Layouts: Engineered reusable templates and dynamic views using Handlebars.js and jQuery, enabling diverse application types (hotel guides, city garbage schedules, radio streaming apps).
JavaScriptjQueryHandlebars.jsLeafletREST APISassCompassHTML5CSS3Git
01/2014 – 06/2014Rzeszów, Poland

Junior Frontend Developer

Aberit Sp. z o.o.

SME Web Solutions

Developed and maintained dynamic websites and custom web solutions tailored for small and medium-sized enterprises (SMEs) using Drupal CMS and modern frontend workflows.

  • End-to-End Website Delivery: Successfully built and delivered 5 custom websites from scratch utilizing Drupal 7, ensuring cross-browser compatibility, responsive layouts, and optimized loading speeds.
  • Design-to-Code Implementation: Transformed complex PSD mockups into pixel-perfect, semantic Drupal themes and templates.
  • Interactive Features: Integrated custom JavaScript/jQuery functionalities and PhysicsJS for advanced browser-based physics animations.
  • Website Maintenance & Support: Managed ongoing updates, security patches, and functional enhancements for existing client websites.
Drupal 7PHPJavaScriptjQueryLeafletPhysicsJSHTML5CSS3SassAdobe Photoshop

Get in touch

Interested in working together? Reach out via email — I'm based in Wrocław, Poland.