Remote Back End Engineer for AI Infrastructure (Contract)

Alignerr Corp.; Wrocław; Remote; PLN 83,000 - 138,000; Part time

Job summary

Alignerr is seeking Back End Developers to design, build, and optimize the server-side systems and APIs that power cutting-edge AI products — from data pipelines to scalable microservices handling real-world traffic at scale.

This is a fully remote, flexible contract role. Poland's engineering talent is world-class, and we're looking for developers who want to apply their skills to some of the most technically interesting problems in AI infrastructure today.

Qualifications

• Proficient in one or more back end languages — Python, Go, Java, Node.js, Rust, or similar.
• Solid understanding of RESTful API design, microservices architecture, and distributed systems.
• Experienced with relational and/or NoSQL databases (PostgreSQL, MongoDB, Redis, etc.).
• Comfortable working with cloud platforms such as AWS, GCP, or Azure.
• Familiar with version control (Git), CI/CD pipelines, and containerization (Docker, Kubernetes).
• Strong problem-solving skills and the ability to debug complex systems independently.
• Self-motivated, reliable, and effective when working asynchronously without close supervision.
• Clear communicator who can document decisions and collaborate across time zones.

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

Backend languages (Python, Go, Java,  

Tools

PostgreSQL

MongoDB

Redis

Docker

Kubernetes

Git

CI/CD

AWS/GCP/Azure

Job description

Alignerr is seeking Back End Developers to design, build, and optimize the server-side systems and APIs that power cutting-edge AI products — from data pipelines to scalable microservices handling real-world traffic at scale.

This is a fully remote, flexible contract role. Poland's engineering talent is world-class, and we're looking for developers who want to apply their skills to some of the most technically interesting problems in AI infrastructure today.