Remote Backend Engineer — AI Infrastructure

Alignerr Corp.; Kraków; Remote; PLN 323,000 - 647,000; Full time

Job summary

Alignerr is seeking Back End Developers in Kraków to design, build, and optimize the server-side systems and APIs that power cutting-edge AI products. This is a fully remote, hourly contract role offering flexible hours and the opportunity to work on data pipelines and model-serving infrastructure.

You will collaborate with researchers and product leads, implement scalable architectures, and ensure performance and reliability as usage grows.

Qualifications

• Experienced back-end developer capable of building scalable APIs.
• Proficient in at least one major back-end language and modern tooling.
• Comfortable working in a remote, freelance contract environment.

Responsibilities

• Design, develop, and maintain robust backend services and data pipelines.
• Build scalable microservices and RESTful APIs to power AI products.
• Ensure code quality with tests, documentation, and reviews.
• Collaborate asynchronously with distributed teams across time zones.

Skills

Python

Go

Java

Node.js

Rust

Tools

PostgreSQL

MongoDB

Redis

AWS

GCP

Azure

Docker

Kubernetes

Git

CI/CD

Job description

Alignerr is seeking Back End Developers in Kraków to design, build, and optimize the server-side systems and APIs that power cutting-edge AI products. This is a fully remote, hourly contract role offering flexible hours and the opportunity to work on data pipelines and model-serving infrastructure.

You will collaborate with researchers and product leads, implement scalable architectures, and ensure performance and reliability as usage grows.