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Marcin – Python, FastAPI, Azure Functions, experts in Lemon.io

Marcin

From Poland (UTC+2)flag

Back-end Web Developer|Middle-to-senior

Marcin – Python, FastAPI, Azure Functions

Marcin is a senior-leaning Python backend engineer with strong expertise in FastAPI, Azure Functions, and cloud infrastructure automation. He demonstrates solid REST API design, performance debugging, and infrastructure-as-code practices, with hands-on experience across Azure and GCP. Feedback highlights his clear communication, mentoring, and ownership mindset, as well as practical experience in high-paced, startup-like environments.

8 years of commercial experience
Main technologies
Python
7 years
FastAPI
5 years
Azure Functions
2.5 years
GCP
0.5 year
Flask
1.5 years
Additional skills
Cloud development
Redis
Django
Direct hire
Possible
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Experience Highlights

Senior Software Engineer / Platform Engineer
Aug 2023 - Mar 20262 years 7 months
Project Overview

Core internal cloud platform enabling engineering teams to securely build, deploy, and operate cloud-based services through automation, self-service tooling, and policy-driven guardrails.

Responsibilities:
  • Designed and developed cloud automation and internal platform tooling for engineering teams.
  • Built self-service capabilities enabling teams to provision and manage cloud resources safely.
  • Automated public cloud infrastructure using Infrastructure as Code and CI/CD pipelines.
  • Applied an Everything-as-Code approach to standardize and version-control platform changes, enabling repeatable and auditable deployments.
  • Collaborated with distributed, remote teams to evolve the internal cloud platform.
  • Participated in on-call rotations supporting production cloud services.
  • Developed cloud-native automation services using Azure Functions to support provisioning, governance, and integrations.
  • Built internal tooling and scripts to automate public cloud infrastructure lifecycle management.
  • Implemented CI/CD pipelines and Infrastructure as Code workflows using Terraform and Azure DevOps.
  • Developed Day-2 operations API using FastAPI to manage and automate post-provisioning cloud operations on Google Cloud Platform.
  • Implemented unit, integration, and system tests for FastAPI service and Azure Functions to improve reliability of automation workflows.
Project Tech stack:
Microsoft Azure
GCP
Python
FastAPI
Azure DevOps
Azure Functions
Terraform
CI
CD
Python Engineer
Jan 2022 - Jul 20231 year 5 months
Project Overview

Communications Software as a Service platform enabling reliable global delivery of SMS and one-time passwords (OTPs).

Responsibilities:
  • Designed and integrated new microservices to extend the platform capabilities.
  • Migrated a large WSGI codebase to ASGI, enabling high-performance asynchronous processing.
  • Integrated a fraud detection service to improve security and prevent abuse.
Project Tech stack:
Python
FastAPI
Flask
Quart
PostgreSQL
Docker
Docker Compose
Redis
Celery
Ansible
Postman
Travis CI
Python Developer
Mar 2021 - Dec 20219 months
Project Overview

A fintech platform enabling merchants to integrate lending programs offering multiple financing options.

Responsibilities:
  • Developed backend services and APIs supporting merchant integrations and financing workflows.
  • Worked with FastAPI and Django REST to implement and expose business logic.
  • Collaborated within a distributed team following established engineering and delivery practices.
Project Tech stack:
Python
FastAPI
Django
Django REST
Docker
Docker Compose
Postman

Education

2025
Computer Science
Bachelor's

Languages

English
Advanced

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