AI Data Annotation Lead

Bloomberg; New York (NY); On-site; USD 150,000 - 210,000; Full time

Job summary

Bloomberg is seeking a Team Lead to own and scale the company’s annotation function across AI and data initiatives. The role oversees annotation operations and governance, applying standards at scale through SME-driven workflows, vendor execution, and strong operational controls.

The ideal candidate is technically grounded, systems-oriented, and comfortable operating at scale with rigorous judgment, calibration, and drift detection to improve data quality and model outcomes.

Qualifications

• Proven experience leading operational or program-focused teams.
• Strong technical judgment in designing or operating annotation systems for ML training/evaluation.
• Deep understanding of annotation systems, calibration, and drift detection.
• Experience running large-scale annotation or data operations with vendors and SMEs.
• Ability to enforce standards at scale while maintaining consistency.
• Excellent cross-functional leadership and comfort with ambiguity.
• Measurable program leadership with focus on outcomes and improvement.

Responsibilities

• Lead and develop a team operating and governing Bloomberg’s AI data annotation capability with high-quality output.
• Own annotation operations end-to-end, translating schemas into scalable workflows with measurable quality.
• Establish governance and quality mechanisms, including calibration, agreement analysis, and drift detection.
• Partner with AI, Data, and Platform teams to align outputs with production needs and model requirements.
• Ensure operational strength at scale, including workforce strategy, vendor oversight, and capacity planning.
• Drive continuous improvement through metrics, feedback loops, and root-cause analysis.
• Maintain judgment integrity as models and domains evolve.

Skills

People leadership

Technical judgment

Annotation systems

Quality methodologies

Vendor management

Cross-functional leadership

Program management

Education

Bachelor’s or Master’s degree in a relevant field

Tools

Annotation platforms

QA tooling

Data instrumentation

Job description

Bloomberg is seeking a Team Lead to own and scale the company’s annotation function across AI and data initiatives. The role oversees annotation operations and governance, applying standards at scale through SME-driven workflows, vendor execution, and strong operational controls.

The ideal candidate is technically grounded, systems-oriented, and comfortable operating at scale with rigorous judgment, calibration, and drift detection to improve data quality and model outcomes.