Senior C++ Engineer: AI Tooling & Optimization (Remote)

Alignerr Corp.; Seattle (WA); Remote; USD 83,000 - 165,000; Part time

Job summary

Alignerr is seeking a Senior C++ Full-Stack Engineer to design and optimize high-performance tooling and data pipelines powering AI infrastructure. This remote contract role focuses on building scalable systems for data annotation, evaluation, and model training support.

You will collaborate with research and engineering teams, embed scripting languages in C++, and optimize existing codebases for reliability and speed. 20–40 hours per week with flexible scheduling.

Qualifications

• 3–5+ years of production-grade C++ experience.
• Strong full-stack development foundation.
• Experience profiling and optimizing data pipelines.
• Embedding scripting languages within C++ applications.

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, performance, and safety across existing C++ codebases.
• Identify bottlenecks and implement scalable fixes in data and system behavior.
• Collaborate with data, research, and engineering teams to support model training and evaluation workflows.
• Participate in synchronous design reviews to iterate on architecture and implementation decisions.

Skills

Production-grade C++

Full-stack development

Performance profiling

Scripting language embedding

English communication

Job description

Alignerr is seeking a Senior C++ Full-Stack Engineer to design and optimize high-performance tooling and data pipelines powering AI infrastructure. This remote contract role focuses on building scalable systems for data annotation, evaluation, and model training support.

You will collaborate with research and engineering teams, embed scripting languages in C++, and optimize existing codebases for reliability and speed. 20–40 hours per week with flexible scheduling.