Backend
Python · FastAPI · Django · GraphQL (Ariadne)
Poznań, Poland · Available for thoughtful engineering
Backend engineering,
built on solid ground.
I'm Szymon Jasiński, a backend engineer with 17 years across Linux infrastructure, cloud platforms, and Python development.
↓01 / Profile
I design scalable services with FastAPI, GraphQL, PostgreSQL and SQLAlchemy—combining infrastructure depth with modern backend engineering to make distributed systems dependable.
02 / Toolkit
From kernel
to API.
Data
PostgreSQL · SQLAlchemy · Alembic · pytest
Platform
Docker · Kubernetes · Linux · Git
Cloud
OpenStack · Apache Airflow · AWS · GCP
03 / Experience
A career in
reliability.
2026 — now
exmox GmbH
Backend Engineer / Python Developer
Building Python microservices for fraud detection and account linking—designing FastAPI services, Ariadne GraphQL APIs, PostgreSQL models, and reliable test suites.
2024 — 2026
Rackspace Technology
Senior Systems Engineer / Senior Python Developer
Developed automation for an enterprise multi-region, multi-tenant private cloud, integrating VMware, OpenStack, BlueCat, and Palo Alto Panorama.
2022 — 2023
Mirumee
Software Engineer / Senior Python Developer
Created backend services and GraphQL APIs for enterprise e-commerce, with FastAPI microservices and AWS deployments.
2018 — 2022
Allegro
Software Engineer
Developed internal engineering platforms, maintained the Ralph CMDB, and built a microservices management application.
2013 — 2018
Allegro
Systems Administrator / Systems Engineer
Supported large-scale e-commerce infrastructure across physical and cloud environments, with automation and production incident response.
2009 — 2013
GSK Services & Allegro Group
Linux / Unix & Network Operations
Administered Unix and Linux systems across major data centres and began in production monitoring and operations.
04 / Beyond the terminal
Technical foundations include RHCE, CCNA, OpenStack, AWS architecture, and an MA in Music.
Near-native English, a little Italian and Arabic—and time away from code spent playing clarinet or riding a unicycle.