C++ Backend Engineer - AI Data Platforms
About this role
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
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