Senior C# Full-Stack Engineer — AI Data & Infrastructure

Labelbox; A distancia; MXN 400,000 - 600,000; A tiempo parcial

Descripción de la vacante

An innovative tech company is looking for a Senior C# Full-Stack Engineer to work on AI data and infrastructure projects. This remote role involves designing and optimizing high-performance systems in C#. Candidates should have a strong background in full-stack development and systems programming, with at least 3-5 years of experience in production C++. The position requires 20-40 hours of commitment a week, offering competitive hourly compensation based on experience.

Formación

• 3-5+ years of professional experience writing production C++.
• Experience with modern C++ standards like C++17 or C++20.
• Ability to commit to 20-40 hours per week.

Responsabilidades

• Design and build high-performance systems in C# for AI data pipelines.
• Develop full-stack tooling for large-scale data processes.
• Collaborate with cross-functional teams for model training.

Conocimientos

Native or fluent English speaker

Full-stack development experience

Strong systems programming background

Performance optimization skills

Clear communication skills

Descripción del empleo

About the Job

Alignerr connects top technical experts with leading AI labs to build, evaluate, and improve next-generation models. We work on real production systems and high-impact research workflows across data, tooling, and infrastructure.

Position

Senior C# Full-Stack Engineer — AI Data & Infrastructure

Type: Contract, Remote
Commitment: 20–40 hours/week
Compensation: Competitive, hourly (based on experience)

$50 - $75 an hour

Role 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

Qualifications

Must-Have

• Native or fluent English speaker
• Full-stack developer experience with a strong systems programming background
• 3-5+ years of professional experience writing production C++ (with a focus on modern standards like C++17 or C++20)
• Strong systems programming background in performance optimization, concurrency (e.g., threading, atomics), and memory safety (e.g., RAII, smart pointers, sanitizers)
• Clear written and verbal communication skills
• Ability to commit 20–40 hours per week

Preferred

• 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

Application Process

• Submit your resume
• Complete a short technical screening
• Project matching and onboarding