About the Job
Alignerr connects top technical experts with leading AI labs to build, evaluate, and improve next-generation models. We work on real production systems and high-impact research workflows across data, tooling, and infrastructure.
Position
Senior C++ Full-Stack Engineer — AI Data & Infrastructure
Type: Contract, Remote
Commitment: 20–40 hours/week
Compensation: Competitive, hourly (based on experience)
Role Responsibilities- Design, build, and optimize high-performance systems in
C++ supporting AI data pipelines and evaluation workflows- Develop full-stack tooling and backend services for large-scale
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 fixes- Participate in synchronous reviews to iterate on system design and implementation decisions
Qualifications
Must-Have-
Native or fluent English speaker-
Full-stack developer experience with a strong systems programming background- 5+ years of professional experience writing production C++ (prefer modern standards like C++17 or C++20).- Deep understanding of computer architecture, SIMD intrinsics, and cache coherency to optimize compute-heavy AI workloads.- Expertise in lock-free programming and maximizing parallelism using threading libraries.- Clear written and verbal communication skills for technical leadership.- Ability to commit 20–40 hours per week.
Preferred- 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
Application Process- Submit your resume- Complete a short technical screening- Project matching and onboarding
