Remote C# Software Engineer - AI Infra & Pipelines

Alignerr; New York (NY); Remote; USD 83,000 - 138,000; Full time

Job summary

Alignerr is seeking a Software Engineer (C#) for Internal Tooling (AI Infrastructure) to build data pipelines and evaluation tooling in a fully remote contract role. You will work on high-performance systems and integration with AI workflows.

The role requires 3–5+ years of production-grade C#, strong English communication, and the ability to commit 20–40 hours per week, with opportunities for ongoing projects and extension.

Qualifications

• 3–5+ years of production-grade C# experience.
• Experience building data pipelines and AI infrastructure tooling.
• Strong English communication and remote-work discipline.

Responsibilities

• Design, build, and optimize high-performance C# systems for AI data pipelines.
• Develop full-stack tooling and backend services for data annotation and quality control.
• Improve reliability, performance, and safety of existing C# codebases.
• Collaborate with data, research, and engineering teams to support model training.
• Identify bottlenecks in data and system behavior and implement scalable fixes.
• Participate in design reviews and refine architecture with senior engineers.

Skills

C#

Full-stack development

Systems programming

Interoperability with Python

Benchmarking harnesses

Tools

.NET

Job description

Alignerr is seeking a Software Engineer (C#) for Internal Tooling (AI Infrastructure) to build data pipelines and evaluation tooling in a fully remote contract role. You will work on high-performance systems and integration with AI workflows.

The role requires 3–5+ years of production-grade C#, strong English communication, and the ability to commit 20–40 hours per week, with opportunities for ongoing projects and extension.