Senior Backend Engineer - DevOps

ProNavigator

ProNavigator

Software Engineering

Poland · Remote

Posted on Jun 2, 2026

Job Description

Tech Stack

Python 3.13: FastAPI, Flask, SQLAlchemy, Pydantic, Celery

Data: NumPy, pandas, Polars

Infrastructure: AWS, Azure, Kubernetes, PostgreSQL, Redis

Your daily work will consist of:

  • Python development of RESTful APIs using Flask and FastAPI with extensive use of SQLAlchemy and pydantic

  • Analysing requirements, proposing solutions, spiking, building PoCs and production grade, well tested solutions and releasing them

  • Supporting, optimizing and maintaining our solutions to meet our SLOs

  • Cooperating with team members through PR reviews, RFCs/ADRs and agile ceremonies

You are our next Talent if you have:

  • Proficiency in Python development (with minimum of 6 years of experience)

  • Experience with FastAPI, SQLAlchemy, Pydantic, Celery

  • Experience in building software for high availability using Kubernetes, Docker and cloud-native technologies

  • Experience using public cloud providers, preferably AWS (including Kubernetes, IAM, S3)

  • Strong foundation in algorithmics and data structures

  • Experience in taking ownership of quality through test automation (TDD, BDD are nice to have), preferably in environment with no formal QA role

  • Expertise in profiling and performance optimization at code, database and infrastructure levels

  • A high sense of responsibility, good work ethic and a natural curiosity and openness to new ideas and tools

  • Excellent communication skills with the ability to articulate complex technical concepts in an English-speaking environment

  • You are ready to face challenges and solve complex technical problems.

  • You enjoy working with people and don't mind occasional face to face meetings with the team when needed

Nice to have:

  • Data engineering background or interest, familiarity with NumPy, pandas, Polars