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Backend Engineer (Python)

ShelfWarsawR&D
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Salary
Not listed
Job type
Full-time
Posted
20 Apr 2026
Status
Open · checked 7d ago

About this role

Shelf is currently hiring a Backend Engineer with Python expertise to join their team in Warsaw for an office-based position. This role suits a driven professional looking to design and own mission-critical backend systems in a high-growth AI environment.

Role Overview

Shelf operates as the core platform for agentic AI, transforming corporate operational logic and workflows into an intelligent data model. In this Warsaw-based position, developers handle production systems from initial design through release and maintenance. The environment encourages autonomy, giving engineers the scope to make impactful technical decisions and shape complex architectural approaches.

Key Responsibilities

Design, build, and deploy robust backend services, data pipelines, APIs, and background processing tasks.
Transform vague business requirements into actionable technical designs and structured execution plans.
Maintain full ownership of services in production, covering system reliability, telemetry, observability, and performance.
Implement comprehensive instrumentation to gather production metrics and drive continuous iteration.
Establish clean system boundaries, dependable data models, and scalable interface paths.
Partner alongside frontend, product, and platform teams to deliver cohesive end-to-end features.
Enhance team productivity through AI-driven tools, code reviews, and pragmatic technical leadership.

Requirements

Extensive professional backend engineering experience working with production-grade systems.
Proficiency in Python for creating clean and maintainable backend codebases.
Solid understanding of distributed systems, focusing on concurrency, async operations, data consistency, and failure management.
Practical background working with cloud infrastructure providers such as AWS, GCP, or Azure.
Familiarity with database schema design and query optimization for high-throughput environments.
Security-first mindset regarding enterprise-grade requirements and sensitive data handling.
Demonstrated ability to independently drive a project from concept to production rollout.
Clear communication skills to explain intricate technical trade-offs without unnecessary jargon.
Experience leveraging AI-native development workflows in daily engineering tasks.

Nice to Have

Production experience constructing agentic systems, such as AI agents, tool-calling frameworks, retrieval setups, or LLM-backed infrastructure.
Working familiarity with TypeScript to contribute across different stack layers when necessary.
Track record of guiding technical direction and raising engineering standards for peers.

Skills and Tools

Python
AWS, GCP, Azure
Distributed Systems
Cloud Infrastructure
Databases
TypeScript
LLM and Agentic AI Tools

About the Company

Shelf serves as the operating system for agentic AI, helping global enterprises like Amazon, Nespresso, HelloFresh, and KeyBank automate complex workflows. Recognized by Gartner as a Cool Vendor and IDC as an Innovator, the company has raised over $60 million from backers including Insight Partners, Tiger Global, and Base10 Partners. Shelf also maintains strategic partnerships with industry leaders such as Microsoft, Salesforce, OpenAI, Snowflake, and Databricks.

How to Apply

Interested candidates should visit the official Shelf careers page to submit an application and learn more about open opportunities.

Skills and tech stack

PythonAWSGCPAzureTypeScriptLLMSnowflake

Questions candidates ask

Where is this job located?

This position is based out of the Shelf office in Warsaw.

What primary programming language is required?

Strong Python skills are required to design clean and maintainable backend code.

What cloud platforms are relevant to the role?

Hands-on experience with cloud infrastructure such as AWS, GCP, or Azure is needed.

What type of experience is a strong plus?

Experience building agentic systems, LLM-backed infrastructure, and working knowledge of TypeScript are considered strong pluses.

How should I apply for this position?

Candidates can apply directly on the official company careers page.

Ready to apply?

The application is on the official Shelf careers page.

Apply on company site