Open to opportunities

Mateusz Jasinski

@mateuszjasinski

Message

I build and lead Python backend systems for finance, healthcare, and science products.

Poland

Message

What I'm looking for

I'm looking to lead the design and delivery of scalable backend products, collaborate effectively across distributed teams, and mentor engineers while driving technical decisions.

Senior software engineer designing, implementing, and operating production backend systems in Python. I specialize in complex web-based services — distributed-system architecture and event-sourcing — and I've delivered 10+ products across finance, healthcare, and science, driving technical decisions and mentoring the engineers around me.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer → Lead Engineer

Current

Kellton Europe

Aug 2017 - Present (9 years 1 month)

Progressed from an individual contributor to a technical lead across multiple projects in finance, healthcare, and science. Designed and delivered backend systems in Python (Django, FastAPI) for 10+ client products, owning architecture from API design through deployment on Kubernetes/AWS.

Python Django fastAPI PostgreSQL Redis Elasticsearch Kubernetes Docker AWS CI CD Distributed Systems Event Sourcing DDD API Design Technical Leadership Kafka

Senior Software Engineer / Lead Engineer

DoveMed Ltd.

Nov 2019 - Dec 2023 (4 years 1 month)

Part-time technical lead and architect for digital health products, owning architecture and key technical decisions across the portfolio. Led a team of 4 engineers to architect and deploy healthcare applications within a 3-4 month timeframe, and designed an API handling 40,000+ unique users daily.

Architecture Healthcare API Design Team Leadership Product Development Data Analysis