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