Principal Python Engineer — ML Infrastructure
AI
Principal Python Engineer needed for a fully remote, flexible contract role at Alignerr to design and build data pipelines, annotation tooling, and evaluation systems for leading AI labs. Requires 5+ years of production Python experience, deep expertise in distributed systems and concurrency, and strong communication skills.
What you'll do
- Design, build, and optimize high-performance Python systems that power 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 production Python codebases
What you need
Must-have
PythonDistributed ComputingConcurrencyAsynchronous ProgrammingFull-stack DevelopmentSystems ProgrammingPerformance OptimizationMemory Profiling
Nice-to-have
Data AnnotationData QualityModel EvaluationAI/ML WorkflowsModel Training PipelinesBenchmarking InfrastructureDistributed Systems ArchitectureInternal Developer Tooling
Soft skills
CommunicationCollaborationTechnical LeadershipProblem Solving
PythonML InfrastructureAI TrainingData PipelinesDistributed SystemsContractRemotePrincipal EngineerFull-stackAnnotation Tooling