Remote Senior C++ Data Infrastructure Engineer

Alignerr Corp.; Seattle (WA); Remote; USD 83,000 - 138,000; Part time

Job summary

Alignerr is seeking a senior C++ engineer to design, build, and optimize high-performance data pipelines, annotation tooling, and evaluation systems for AI labs. This fully remote contract role offers 20–40 hours per week and real production impact.

You will work on production-grade C++ code, collaborate with cross-functional teams, and help scale AI data workflows with zero-copy data exchange and efficient serialization.

Qualifications

• 3–5+ years of professional experience writing production-grade C++.
• Experience with high-performance data pipelines and tooling.

Responsibilities

• Design, build, and optimize high-performance C++ systems for AI 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 existing C++ codebases.
• Identify bottlenecks and implement scalable, production-grade fixes.
• Collaborate with data, research, and engineering teams to support model training at scale.
• Participate in design reviews to refine architecture and implementation.

Skills

C++

Systems programming

Zero-copy I/O

Binary serialization

Performance optimization

Full-stack tooling

Job description

Alignerr is seeking a senior C++ engineer to design, build, and optimize high-performance data pipelines, annotation tooling, and evaluation systems for AI labs. This fully remote contract role offers 20–40 hours per week and real production impact.

You will work on production-grade C++ code, collaborate with cross-functional teams, and help scale AI data workflows with zero-copy data exchange and efficient serialization.