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Data Infrastructure Developer (C++)
Remote (Global)
$50 – $75/hr
June 26, 2026
Job description
Data Infrastructure Developer (C++)
About the Role
What if your systems programming expertise could directly shape the infrastructure powering the world's most advanced AI models? We're looking for a Senior C++ Engineer to design and build the high-performance data pipelines, annotation tooling, and evaluation systems that leading AI labs depend on — from the ground up.
This is a fully remote, flexible contract role for engineers who thrive on hard technical problems and want their work to matter at scale.
- Organization: Alignerr
- Type: Hourly Contract
- Location: Remote
- Commitment: 20–40 hours/week
What You'll Do
- 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
- 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, production-ready fixes
- Participate in synchronous design reviews to iterate on system architecture and implementation decisions
Who You Are
- Native or fluent English speaker with clear written and verbal communication skills
- Full-stack developer with a strong systems programming background
- 3–5+ years of professional experience writing production-grade C++
- Deep expertise in efficient binary serialization formats
- Experienced implementing zero-copy data exchange protocols for high-speed pipelines
- Self-directed and able to commit 20–40 hours per week in a remote environment
Nice to Have
- 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
Why Join Us
- Work on real production systems at the frontier of AI — not toy projects
- Collaborate directly with leading AI research labs on high-impact infrastructure
- Fully remote and flexible — work when and where you do your best work
- Freelance autonomy with the substance of meaningful, technically demanding work
- Potential for ongoing work and contract extension as new projects launch
Apply now
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