Job description

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