Backend Developer - AI Infrastructure (Remote)

Alignerr; Kraków; On-site; PLN 83,000 - 124,000; Part time

Job summary

Alignerr is seeking Back End Developers for a fully remote hourly contract to design, build, and optimize server-side systems and APIs powering AI products. Work from anywhere with 10–40 hours per week, contributing to data pipelines and model-serving infrastructure.

Ideal candidates are proficient in Python, Go, Java, Node.js, or Rust, with strong RESTful API and distributed systems experience, plus familiarity with cloud platforms and containers.

Qualifications

• Proficient in one or more back end languages: Python, Go, Java, Node.js, Rust.
• Strong understanding of RESTful API design and microservices architecture.
• Experience with relational and/or NoSQL databases (PostgreSQL, MongoDB, Redis).

Responsibilities

• Design, develop, and maintain robust back end services, APIs, and data pipelines.
• Build scalable, high-performance server-side architecture to support AI training and inference workloads.
• Write clean, well-documented, and testable code following engineering best practices.
• Integrate with databases, message queues, cloud services, and third-party APIs.
• Optimize system performance, reliability, and scalability as usage grows.
• Collaborate asynchronously with distributed teams of engineers, researchers, and product leads.
• Troubleshoot production issues, conduct code reviews, and contribute to architectural decisions.
• Work independently on task-based and project-based assignments on your own schedule.

Skills

Python

Go

Java

Node.js

Rust

Tools

PostgreSQL

MongoDB

Redis

Docker

Kubernetes

AWS

GCP

Azure

Job description

Alignerr is seeking Back End Developers for a fully remote hourly contract to design, build, and optimize server-side systems and APIs powering AI products. Work from anywhere with 10–40 hours per week, contributing to data pipelines and model-serving infrastructure.

Ideal candidates are proficient in Python, Go, Java, Node.js, or Rust, with strong RESTful API and distributed systems experience, plus familiarity with cloud platforms and containers.