Senior C# Full-Stack Engineer - AI Data & Infra (Remote)

Alignerr Corp.; United States; Remote; MXN 1,557,000 - 3,113,000; Full time

Benefits offered by this job

Remote work autonomy

Flexible hours

Job summary

Alignerr is seeking a Senior C# Full-Stack Engineer for a fully remote hourly contract. You will design and optimize C# data pipelines, annotation tooling, and evaluation systems used by AI labs.

You’ll work closely with data, research, and infrastructure teams in a high-impact environment, committing 20–40 hours per week and delivering production-ready solutions across distributed systems.

Qualifications

• 3–5+ years of professional experience writing production C# code.
• Strong background in performance optimization, concurrency, and memory safety.
• Experience designing and building data pipelines and tooling for AI-related workloads.

Responsibilities

• Design, build, and optimize high-performance C# systems powering data pipelines and evaluation workflows.
• Develop full-stack tooling and backend services for large-scale data annotation and quality control.
• Improve reliability and performance across production C# codebases.
• Collaborate with data, research, and engineering teams to support model training and evaluation infrastructure.
• Identify bottlenecks and implement scalable, production-ready fixes.

Skills

C# development

Full-stack engineering

Performance optimization

Concurrency

Tools

ASP.NET

SQL

Entity Framework

Job description

Alignerr is seeking a Senior C# Full-Stack Engineer for a fully remote hourly contract. You will design and optimize C# data pipelines, annotation tooling, and evaluation systems used by AI labs.

You’ll work closely with data, research, and infrastructure teams in a high-impact environment, committing 20–40 hours per week and delivering production-ready solutions across distributed systems.