Data Scientist II - Tsui Lab

Philadelphia, PA, US, 19104

​Location: LOC_HOME-Home/Remote Office Location 

Req ID: 222053

Shift: Days

Employment Status: Regular - Full Time 


Seeking Breakthrough Makers   

Children’s Hospital of Philadelphia (CHOP)—named America’s 2022 Best Large Employer by Forbes—offers countless ways to change lives. Our diverse community of more than 20,000 Breakthrough Makers will inspire you to pursue passions, develop expertise, and drive innovation.

At CHOP, your experience is valued; your voice is heard; and your contributions make a difference for patients and families. Join us as we build on our promise to advance pediatric care—and your career. 


CHOP’s Commitment to Diversity, Equity, and Inclusion 

CHOP is committed to building an inclusive culture where employees feel a sense of belonging, connection, and community within their workplace. We are a team dedicated to fostering an environment that allows for all to be their authentic selves. We are focused on attracting, cultivating, and retaining diverse talent who can help us deliver on our mission to be a world leader in the advancement of healthcare for children. 

We strongly encourage all candidates of diverse backgrounds and lived experiences to apply. 

Job Summary

The Tsui Informatics Laboratory ( at the Children’s Hospital of Philadelphia (CHOP) is seeking a Data Scientist to support the lab’s mission: to develop and deploy clinical decision support systems and research tools aimed to improve health care, address clinical challenges, and advance research. The Data Scientist will be able to conduct independent research focusing on the development of (deep) natural language processing (NLP) and machine learning (ML) applied to clinical notes, electronical health record, and/or literature.

In this role, the Data Scientist will work closely with the lab director, Dr. Rich Tsui ( to work on projects such as Expertise Knowledge System (EKP), social determinants of health (SDOH), and mental health. The Data Scientist will also actively develop new deep learning-based algorithms and work with CHOP researchers to advance current state-of-the-art research.

Job Responsibilities

  • Implement computational algorithms and experiments for test and evaluation; interprets data to assess algorithm performance.
  • Make significant contributions to the formulation of analysis plans and associated documentation of methods that meet stringent criteria for reproducibility and measures of significance.
  • Develop high-quality code implementing models and algorithms as application programming interfaces or other service-oriented software implementations.
  • Participate in communication of research methods, implementation, and results to varied audience of clinicians, scientists, analysts, and programmers.
  • Work closely with applications research group to translate models and algorithms into engineered production applications.
  • Contribute to manuscript writing for results publication, authors abstracts, and presents at professional conferences.

Job Responsibilities (Continued)

  • Partner with key stakeholders and lead analysis to support research development and needs 
  • Leverage data to drive decisions and introduce automation, predictability & optimization to allow us to operate efficiently and reliably at scale. 
  • Identify research problems and solve them by using various analytics, ML algorithms, data mining techniques, and medical informatics
  • Design and develop advanced mathematical, optimization models and apply them to define strategic and tactical needs and drive the appropriate business and technical solutions in the areas of information retrieval and predictive analytics
  • Research prototype and experiment with models by using programming languages such as Python, Java, R; participate in the production level deployment.
  • Create, enhance, and maintain technical documentation.
  • Influence clinical care or research practice
  • Partner in onboarding new technologies onto team's toolbox.
  • The ideal candidate will have a passion for creating impact from the ground up in a fast-paced environment. Additionally, you will have a proven track record of independent research in developing informatics studies

Job Responsibilities (Continued)

The lab/department works approximately 80% remotely, 20% on-site and/or on an as needed basis to achieve lab goals and fulfill job responsibilities.

Required Education and Experience

Required Education: Bachelors Degree


Required Experience: At least three (3) years of experience with progressively more complex data science, applied statistics, machine learning, or mathematical modeling projects.

Preferred Education, Experience & Cert/Lic

Preferred Education: M.S. or PhD in Computer Science, Computational Linguistics, Analytics, Medical Informatics, Data Science, Statistics, Mathematics, or a related field.

Preferred Experience:

  • Four (4) years of experience with progressively more complex natural language processing, biomedical data science, machine learning, or applied statistics projects.
  • Medical informatics training or experience

Additional Technical Requirements

  • Fluent in open-source machine learning platforms (TensorFlow, PyTorch, Keras, Scikit-Learn, NLTK, Spacy, etc.)
  • Knowledge and Experience with deep learning models, e.g., BERT, ClinicalBERT, CNN, LSTM, etc.
  • Fluent in topic modeling, named entity recognition, sentiment analysis, and information retrieval
  • Experience with relational databases (e.g., Postgres) strongly preferred
  • Knowledge and experience with Github, Bitbucket, or equivalent versioning system
  • Familiarity cloud systems, e.g., Amazon Web Services.
  • Excellent verbal and written communications skills
  • Experience creating informative visualizations for complex, high dimensional data preferred.

To carry out its mission, CHOP is committed to supporting the health of our patients, families, workforce, and global community.  As a condition of employment, professionals working onsite—at any CHOP location, for any portion of time—must be vaccinated for COVID-19. Learn more. 

CHOP also requires employees who work in patient care buildings to receive an annual influenza vaccine. Employees may request exemptions for valid religious and medical reasons.  Start dates may be delayed until candidates are immunized or exemption requests are reviewed.  

EEO / VEVRAA Federal Contractor        |              Tobacco Statement 


Nearest Major Market: Philadelphia

Job Segment: Informatics, Open Source, Cloud, Patient Care, Technology, Healthcare, Research