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Lemon.io

Back End Developer

Canada

Full-time

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Job details

Job type: Full-time
Posting language: English
Posted: Nov 6, 2026

Original job description

Lemon.io helps companies in the US and Europe hire experienced engineers, from funded startups to teams like Klarna, Retool, and Pinterest. We’ve been doing this since 2015, and more than 1,500 companies have hired engineers through us.

Currently, we have a few open positions from our client, an AI-native cloud company. AI teams use its platform to run inference on open-source models, fine-tune them and rent large GPU clusters. The fleet is set to grow about 10×; the team won't. That's where you come in.

Requirements for Senior Back-end Developers with Python

5+ years of commercial experience with Python
2+ years of commercial experience with Linux
2+ years of commercial experience with Kubernetes
1+ year of experience in AI-assisted coding
Experience with distributed systems

Significant ownership of production systems or platforms.
Experience architecting systems rather than only contributing features.
Experience working with GPU infrastructure bare-metal scale, or on-prem hardware (big plus; can be a nice-to-have if there is a comparable/close expertise)

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More about this job

Responsibilities

Architect and take significant ownership of production back-end systems and platforms for an AI-native cloud company. Help the company scale its infrastructure and services as its GPU fleet grows substantially.

Requirements

Requires at least five years of commercial Python experience, two years with Linux and Kubernetes, and one year using AI-assisted coding. Candidates should have distributed-systems experience, a record of owning production systems, and experience architecting systems; GPU infrastructure or bare-metal and on-premises hardware experience is a strong plus.

Skills

Python
Linux
Kubernetes
AI-Assisted Coding
Distributed Systems
Production Systems
System Architecture
GPU Infrastructure
Bare-Metal Infrastructure
On-Premises Hardware

Visa sponsorship

Not detected in the job text

Keywords

Python
Linux
Kubernetes
AI-Assisted Coding
Distributed Systems
Back-End Development
Production Systems
System Architecture
AI-Native Cloud
Inference
Open-Source Models
Fine-Tuning
GPU Clusters
GPU Infrastructure
Bare-Metal Infrastructure
On-Premises Hardware
Cloud Computing
Data Infrastructure

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