Key skills
C++Full-stack developmentAsynchronous network programmingHigh-throughput databasesDistributed systemsAI/ML workflowsData annotationClear communicationCAIMLCommunication
About this role
Alignerr connects top technical experts with leading AI labs to build, evaluate, and improve next-generation models. The Senior C++ Full-Stack Engineer will design and optimize high-performance systems in C++ for AI data pipelines and collaborate with various teams to support model training and evaluation workflows.
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
Requirements:
- Native or fluent English speaker
- Full-stack developer experience with a strong systems programming background
- 5+ years of professional experience writing production C++
- Strong background in asynchronous network programming using event loops or RPC frameworks for high-performance microservices
- Experience interfacing with high-throughput databases or message queues
- Clear written and verbal communication skills
- Ability to commit 20–40 hours per week
- 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