Available for opportunities

Hi, I'm Szymon Koschel

I'm a

Building beautiful digital experiences with modern technologies.

Technologies I work with

Node.jsNest.jsTypeScriptAngularFlutterEmbedded

A bit about me

Started in device communication during my studies, which landed me at Viessmann working on how IoT devices talk to the cloud. That experience gave me the foundation to architect SAOL — a civil defense warning system.

Now I'm self-employed, focused on two main projects: building the digital ignition system and developing SAOL further. Node.js, NestJS, TypeScript, embedded C++ — I like making complex things work reliably.

Outside of code, I'm into speedway racing. Actually built an ignition controller with 6x World Champion Bartosz Zmarzlik — proper embedded C++ on microcontroler with BLE and GPS telemetry. Sometimes the side projects are the most interesting ones.

Location

Poland

Focus

Backend & Systems

Experience

10+ years

Other interests

Speedway, Embedded

Featured Projects

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

Speedway Digital Ignition

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

Embedded C++Flutter3D DesigingPCB DesigningBLE

Civil Defense Warning System

Emergency alert and notification system for civil defense operations with real-time monitoring. Now serves as a critical national security infrastructure.

AngularNode.jsNestJSPostgreSQL

Flip.shop

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

Node.jsNestJSMongoDBRabbitMQRedisAWS

Viessmann

IoT data processing and communication system for smart heating solutions.

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.

📘

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 discuss new projects, creative ideas, or opportunities to be part of your visions.

Get in touch→szymon@koschel.dev

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