Senior Data Scientist jobs in United States
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Ascendion · 1 day ago

Senior Data Scientist

Ascendion is a full-service digital engineering solutions company that specializes in software platforms and products. They are seeking a Senior Data Scientist to lead the optimization and modernization of large-scale NLP and Named Entity Recognition (NER) systems, focusing on improving model accuracy and performance while transitioning to custom in-house ML models.

Augmented RealityCloud ComputingConsultingSoftware Engineering
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H1B Sponsor Likelynote
Hiring Manager
Manthan Sheth
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Responsibilities

Design, optimize, and scale NLP / NER models for legal entity extraction
Transition from third-party tools to custom, in-house ML models
Improve model accuracy, performance, and cost efficiency
Optimize pipelines to reduce GPU dependency and explore CPU-based solutions
Tune and benchmark models; perform before vs after performance and cost analysis
Conduct deep data analysis and prepare high-quality datasets for annotation teams
Deploy, monitor, and evaluate models in AWS production environments
Own post-deployment analysis and continuous improvement of models

Qualification

NLP experienceModel tuningOptimizationML OpsAdvanced PythonAWS experienceHigh-volume data pipelinesLLMsRAGAgentic workflows

Required

Strong NLP experience, especially NER and entity extraction
Experience with traditional ML models (e.g., LSM, BTSM or similar)
Model tuning and optimization for performance and cost
ML Ops — deployment, monitoring, and performance testing
Advanced Python for data analysis and experimentation
AWS experience: EC2, S3, SageMaker
Experience working with high-volume data pipelines
Experience with LLMs
RAG (Retrieval-Augmented Generation)
Agentic workflows

Benefits

Medical insurance
Dental insurance
Vision insurance
401(k) retirement plan
Long-term disability insurance
Short-term disability insurance
5 personal days accrued each calendar year. The Paid time off benefits meet the paid sick and safe time laws that pertain to the City/ State
10-15 days of paid vacation time
6 paid holidays and 1 floating holiday per calendar year
Ascendion Learning Management System

Company

Ascendion

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Ascendion is a trusted ally for enterprise business and technology leaders engineering the digital future.

H1B Sponsorship

Ascendion has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (172)
2024 (193)
2023 (93)

Funding

Current Stage
Late Stage

Leadership Team

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Karthik Krishnamurthy
Chief Executive Officer and Founder
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Daryush Laqab
Chief AI Officer
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Company data provided by crunchbase