Senior C# Engineer – AI Infra & Internal Tooling (Remote)

Alignerr Corp.; Seattle (WA); À distance; USD 83 000 - 124 000; Temps partiel

Résumé du poste

Alignerr is seeking a senior full-stack C# engineer for internal tooling and AI infrastructure. You will design and optimize high-performance C# systems, data pipelines, and evaluation workflows, collaborating with data, research, and engineering teams.

This is a remote hourly contract requiring 20-40 hours per week and strong production-grade C# experience. Ideal candidates have 3-5+ years of C# development, experience with cross-language integrations (Python interop), and a focus on

Qualifications

• 3-5+ years of professional experience writing production-grade C#.
• Native or fluent English speaker with strong written and verbal communication skills.
• Full-stack developer with a solid systems programming background.
• Experienced with interoperability scenarios - invoking Python ML models from .NET, wrapping native libraries, or similar cross-language integrations.
• Skilled at designing robust harnesses for benchmarking and evaluating system performance.
• Able to commit 20-40 hours per week with reliability and consistency.

Responsabilités

• Design, build, and optimize high-performance C# systems 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, then implement scalable fixes
• Participate in synchronous design reviews to iterate on architecture and implementation decisions

Connaissances

C# development

Full-stack development

Systems programming

Cross-language integration

Performance benchmarking

English proficiency

Outils

Python interop with .NET

Wrapping native libraries

Description du poste

Alignerr is seeking a senior full-stack C# engineer for internal tooling and AI infrastructure. You will design and optimize high-performance C# systems, data pipelines, and evaluation workflows, collaborating with data, research, and engineering teams.

This is a remote hourly contract requiring 20-40 hours per week and strong production-grade C# experience. Ideal candidates have 3-5+ years of C# development, experience with cross-language integrations (Python interop), and a focus on