Senior C++ Developer for AI Training and Optimization

Alignerr โ€ข United State
Remote
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AI Summary

Design, build, and optimize high-performance C++ systems for AI data pipelines and evaluation workflows. Collaborate with data, research, and engineering teams to accelerate model training and evaluation. Develop backend services and full-stack tooling for large-scale data annotation, validation, and quality control.

Key Highlights
Design high-performance C++ systems for AI data pipelines
Collaborate with data, research, and engineering teams
Develop backend services and full-stack tooling
Key Responsibilities
Design, build, and optimize high-performance C++ systems
Develop backend services and full-stack tooling
Collaborate with data, research, and engineering teams
Technical Skills Required
C++ Scripting languages Profiling code Data processing systems
Benefits & Perks
Fully remote work
Flexible contract role
Potential for ongoing contracts and expanded scope
Nice to Have
Prior experience with data annotation, data quality, or AI evaluation systems
Familiarity with AI/ML workflows, model training pipelines, or benchmarking infrastructure

Job Description


C++ Developer โ€” Internal Tooling & Optimization (AI Training)

About The Role

What if your C++ expertise could directly shape the infrastructure behind the most advanced AI systems in the world? We're looking for experienced C++ engineers to design, build, and optimize the internal tooling and data pipelines that power next-generation AI research and production workflows.

This is a fully remote, flexible contract role for engineers who thrive at the intersection of systems performance, data infrastructure, and high-impact technical work. You'll be embedded in real engineering workflows alongside leading AI labs โ€” writing code that matters.

  • Organization: Alignerr
  • Type: Hourly Contract
  • Location: Remote
  • Commitment: 20โ€“40 hours/week

What You'll Do

  • Design, build, and optimize high-performance C++ systems supporting AI data pipelines and evaluation workflows
  • Develop backend services and full-stack tooling for large-scale data annotation, validation, and quality control
  • Improve reliability, performance, and safety across existing production C++ codebases
  • Profile and benchmark code to identify bottlenecks in data processing systems and implement scalable solutions
  • Embed scripting languages within C++ applications to create flexible, extensible internal tools
  • Collaborate with data, research, and engineering teams to accelerate model training and evaluation
  • Participate in synchronous design reviews to iterate on system architecture and implementation decisions

Who You Are

  • Native or fluent English speaker with strong written and verbal communication skills
  • Full-stack developer with a deep systems programming background
  • 3โ€“5+ years of professional experience writing production-grade C++
  • Experienced in embedding scripting languages within C++ applications for flexible tooling
  • Skilled at profiling code and identifying performance bottlenecks in data-intensive systems
  • Able to commit 20โ€“40 hours per week consistently
  • Self-directed and reliable when working in a remote, asynchronous environment

Nice to Have

  • Prior experience with data annotation, data quality, or AI evaluation systems
  • Familiarity with AI/ML workflows, model training pipelines, or benchmarking infrastructure
  • Experience with distributed systems or developer tooling at scale
  • Background in systems design for high-throughput or low-latency environments

Why Join Us

  • Work on real production systems alongside top AI research labs โ€” not toy projects
  • Fully remote and flexible โ€” structure your work around your life
  • Freelance autonomy with the substance of high-impact, technically demanding work
  • Contribute directly to infrastructure that shapes the future of AI development
  • Potential for ongoing contracts and expanded scope as new projects launch

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