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Hi, I'm Szymon Koschel

A passionate developer crafting beautiful digital experiences with modern technologies.
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Technologies I work with

Node.jsNest.jsTypeScriptAngularFlutterEmbedded

About Me

Get to know a little bit more about who I am and what I do.

My Journey

During my studies, I focused on device communication in the cloud, which led me to Viessmann's Device Communication team. The skills I acquired there enabled me to architect a civil defense warning system. Now I'm crafting cutting-edge e-commerce solutions, continuously growing as a backend engineer driven to create impactful technological solutions.

What I Do

I specialize in building robust backend systems using Node.js, NestJS, and TypeScript with microservices architecture. From IoT device communication to e-commerce platforms with payments and ML data pipelines — I turn complex requirements into scalable, maintainable solutions.

Quick Facts

LocationPoland 🇵🇱
ExperienceFull-Stack Development
FocusBackend Applications
PassionSpeedway & Code
9+
Years Coding
10+
Projects Built

Featured Projects

A selection of projects I've worked on. Each one represents a unique challenge and learning experience.

V-Ignition logoSpeedway Digital Ignition

Built from scratch. Device, resposinble for ignition in engine with BLE communication and GPS telemetry and mobile application for analyze heats. Used by 6x World Champion 95 - Bartosz Zmarzlik Bartosz Zmarzlik

Speedway Digital Ignition
Embedded C++Flutter3D DesignBLE
SAOL logoCivil Defense Warning System

Emergency alert and notification system for civil defense operations with real-time monitoring.

Civil Defense Warning System
AngularNode.jsNestJSPostgreSQL
Flip.shop logoFlip.shop

E-commerce platform with microservices architecture, message queuing, and cloud deployment.

Flip.shop
Node.jsNestJSMongoDBRabbitMQRedisAWS
Viessmann logoViessmann

IoT data processing and communication system for smart heating solutions.

Viessmann
Node.jsRedisPostgreSQLIoT

Skills & Technologies

The tools and technologies I use to bring ideas to life.

Node.jsNestJSMicroservicesRedisPostgreSQLMongo
⚙️
Backend Development
Creating robust APIs with Node.js, NestJS, and databases.
AngularNext.jsTailwind
🎨
Frontend Development
Building responsive, performant user interfaces with Angular, and modern CSS frameworks.
TS
📘
TypeScript
Writing type-safe code that catches errors at compile time and improves developer experience.
GitDockerKubernetes
🚀
DevOps & Tools
Version control, CI/CD pipelines, containerization, and deployment automation.
C++STM32ESP-IDF
🔧
Embedded Systems
Low-level programming for microcontrollers and IoT devices.
Flutter
📱
Multi-platform Apps
Building cross-platform mobile and desktop applications with a single codebase.

Let's Connect

I'm always open to discussing new projects, creative ideas, or opportunities to be part of your visions.

Say Hello 👋szymon@koschel.dev

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© 2025 Szymon Koschel. Built with Next.js & Tailwind CSS.