Remote C++ Data Infrastructure Engineer

Alignerr Corp.; New York (NY); On-site; USD 28,000 - 55,000; Part time

Benefits offered by this job

Fully remote

Job summary

Alignerr is seeking a seasoned C++ engineer to design and optimize high-performance data pipelines, annotation tooling, and evaluation systems used by leading AI labs. This fully remote contract role emphasizes correctness, performance, and scale, building infrastructure rather than maintenance.

This is a fully remote hourly position, with a commitment of 20-40 hours per week, offering freelance autonomy and potential for ongoing work on new AI projects.

Qualifications

• 3-5+ years of production-grade C++ experience.
• Strong systems programming background with full-stack development experience.
• Expert-level knowledge of efficient binary serialization formats.
• Hands-on experience implementing zero-copy data exchange protocols in high-throughput environments.
• Native or fluent English speaker with clear written and verbal communication skills.
• Self-directed and reliable - able to commit 20-40 hours per week and deliver quality work independently.

Responsibilities

• Design, build, and optimize high-performance C++ systems supporting large-scale AI data pipelines and evaluation workflows.
• Develop full-stack tooling and backend services for data annotation, validation, and quality control.
• Implement efficient binary serialization formats and zero-copy data exchange protocols for high-speed pipelines.
• Identify and resolve performance bottlenecks, edge cases, and reliability issues across complex C++ codebases.
• Collaborate with data, research, and engineering teams to support model training and evaluation workflows.
• Participate in synchronous design reviews to iterate on system architecture and implementation decisions.

Skills

C++

Systems programming

Full-stack development

Binary serialization

Zero-copy data exchange

English language

Job description

Alignerr is seeking a seasoned C++ engineer to design and optimize high-performance data pipelines, annotation tooling, and evaluation systems used by leading AI labs. This fully remote contract role emphasizes correctness, performance, and scale, building infrastructure rather than maintenance.

This is a fully remote hourly position, with a commitment of 20-40 hours per week, offering freelance autonomy and potential for ongoing work on new AI projects.