C++ Backend Engineer - AI Data Platforms
C++ Backend Engineer — AI Data Platforms About The Role What if your systems programming expertise could directly shape the infrastructure powering next-generation AI? We're looking for senior C++ engineers to build, optimize, and scale the data pipelines, annotation tooling, and evaluation systems that leading AI labs depend on. This is a fully remote contract role with meaningful technical depth — real production systems, real impact, and the kind of engineering challenges that actually push your skills forward. 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 backend services and tooling for data annotation, validation, and quality control at scale Improve reliability, performance, and safety across existing C++ codebases Identify bottlenecks and edge cases in system and data behavior — then implement clean, scalable fixes 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 Who You Are Native or fluent English speaker with clear written and verbal communication 5+ years of professional experience writing production-grade C++ Strong background in asynchronous network programming — event loops, RPC frameworks, or high-performance microservices Experienced working with high-throughput databases or message queues Full-stack developer mindset with a deep systems programming foundation Able to commit 20–40 hours per week consistently
Nice to Have
Prior experience with data annotation, data quality pipelines, or evaluation systems Familiarity with AI/ML workflows, model training, or benchmarking infrastructure Experience with distributed systems design or developer tooling
Why Join Us
Work directly with leading AI research labs on systems that matter Fully remote — work from wherever you do your best thinking Flexible contract engagement with meaningful, high-impact technical work Collaborate with top-tier engineers across data, research, and infrastructure Potential for ongoing work and contract extension as projects scale