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December 17, 2025

Backend Software Engineer

Mid • Remote

$120 - $130/

Kraków, Poland

We’re seeking a Backend Engineer with exceptional engineering discipline and FAANG-level standards to build and scale backend systems for an AI-powered product used by growing organizations. This flexible role operates in a startup-intensive environment and includes participation in calls with US-based customer as part of delivering real-world product impact.


About the Project

You’ll help build and scale the backend and platform systems that power intelligent, AI-driven workflows over large organizational datasets. The platform is designed for speed, reliability, and continuous iteration, offering meaningful technical ownership in a high-growth startup setting.


Key Responsibilities:

  • Design, develop, and maintain scalable backend and platform services;

  • Build APIs and data pipelines that support AI and agent-driven workflows;

  • Integrate backend systems with cloud infrastructure and data stores;

  • Take end-to-end ownership of features in a fast-moving startup environment;

  • Collaborate closely with product and engineering teams to deliver high-impact solutions;

  • Continuously improve system performance, reliability, and scalability.


Qualifications:

  • 4+ years of experience in backend or platform engineering;

  • Strong proficiency in Python, backend API development, and system design;

  • Experience with AWS and relational SQL databases;

  • Ability to work independently, learn quickly, and thrive in a startup-intensive environment;

  • Strong problem-solving and communication skills in English.

  • Nice to have: experience working with LLMs, agentic frameworks, or RAG-based systems;


The Recruitment Process Includes:

  • 30-minute HR screening call;

  • Technical interview;

  • Team and product discussion;

  • Offer and alignment call.