[Remote] Backend Developer - AI Data Services

Note: The job is a remote job and is open to candidates in USA. Alignerr connects top technical experts with leading AI labs to build, evaluate, and improve next-generation models. The role involves designing and optimizing high-performance systems in C# to support AI data pipelines and collaborating with various teams to enhance model training and evaluation workflows.

Responsibilities
• Design, build, and optimize high-performance systems in C# supporting AI data pipelines and evaluation workflows
• Develop full-stack tooling and backend services for large-scale data annotation, validation, and quality control
• Improve reliability, performance, and safety across existing C# codebases
• Collaborate with data, research, and engineering teams to support model training and evaluation workflows
• Identify bottlenecks and edge cases in data and system behavior, and implement scalable fixes
• Participate in synchronous reviews to iterate on system design and implementation decisions

Skills
• Native or fluent English speaker
• Full-stack developer experience with a strong systems programming background
• 5+ years of professional experience writing production C#
• Strong skills in data modeling and database access using ORM frameworks or micro-ORMs for high-performance SQL interactions
• Experience building secure, documented endpoints for data access and manipulation
• Clear written and verbal communication skills
• Ability to commit 20–40 hours per week
• Prior experience with data annotation, data quality, or evaluation systems
• Familiarity with AI/ML workflows, model training, or benchmarking pipelines
• Experience with distributed systems or developer tooling

Company Overview
• We're looking for experts to help train better AI. It was founded in undefined, and is headquartered in , with a workforce of 11-50 employees. Its website is https://www.alignerr.com/.

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