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December 17, 2025

(Senior) Python Developer - Freelance - Scheduling Platform project

Senior • Remote

$125 - $145/hr

Warsaw, Poland

Senior Python Engineer with AI Knowledge

Location: Remote/ based in European Union (Poland is client's preference)Contract: B2BStart date: ASAP, project at least till January 2026



Rate: up to 145 PLN/h (+ VAT)


Project Information (Backend Focus)

  • Technology Stack: Python backend with PostgreSQL (or other relational databases). The environment includes testing with Pytest and deployment within Google Cloud Platform (GCP).

  • Integration: Planned integration with an external system for exchanging sales document data (receipts, invoices) in compliance with Spanish legal requirements (Verifactu). Partner for integration currently being selected.

  • Project Phase: Discovery phase. The team will join a new project, not an existing one.

  • Project Goal: Build a compliant data exchange solution with an external provider according to financial department and legal regulations.

  • Non-Functional Requirements: Compliance with financial regulations and internal security and performance standards.


Requirements

Tasks & Responsibilities

  • Develop and maintain backend services in Python.

  • Implement integrations with external data exchange providers (e.g., Verifactu).

  • Design and maintain database schemas and queries (PostgreSQL).

  • Ensure system compliance with financial and legal requirements.

  • Write automated tests using Pytest.

  • Deploy, monitor, and optimize backend services in GCP.

  • Collaborate with frontend and cross-functional teams to ensure system integrity and reliability.


Requirements

  • Strong experience in Python development.

  • Proficiency with PostgreSQL or similar relational databases.

  • Experience with Pytest for backend testing.

  • Knowledge of cloud solutions, preferably GCP.

  • Understanding of integration with external systems (APIs, data exchange protocols).

  • Ability to design and develop solutions compliant with financial and legal standards.

  • Senior-level engineers preferred, with proven ability to collaborate within and across teams.


Benefits

  • 100% remote, flexible work;

  • work with an experienced team of developers and continuous development of your hard and soft skills;

  • long-term collaboration on challenging products


What will happen next?

  • We will invite you for a meeting with our recruiter.

  • Next, you'll participate in the client interview.