Senior Data Scientist

Calling all innovators - find your future at Fiserv.

We're Fiserv, a global leader in Fintech and payments, and we move money and information in a way that moves the world. We connect financial institutions, corporations, merchants and consumers to one another millions of times a day - quickly, reliably, and securely. Any time you swipe your credit card, pay through a mobile app, or withdraw money from the bank, we're involved. If you want to make an impact on a global scale, come make a difference at Fiserv.

Job Title

Senior Data Scientist

What does a successful Senior Data Scientist do at Fiserv?

As a Senior Data Scientist within Data Commerce Solutions, you will design and develop products and solutions to drive innovation. You will leverage Artificial Intelligence, Machine Learning and Deep Learning models in addition to other statistical techniques to target specific business objectives and create other business opportunities.
 

What you will do:

• You will design and develop inventive products & solutions to drive innovation leveraging AI/ML/DL models to target specific business objectives and create other business opportunities. 
• Design and develop custom ML, Gen AI, NLP, LLM Models for batch and stream processing-based AI ML pipelines
• Utilize LangChain / LlamaIndex for advanced language processing tasks. Perform fine-tuning of models and work with Parameter-Efficient Fine-Tuning (PEFT), RAG, and Agentic AI Frameworks
• Work in a highly collaborative, team environment, and collaborating with multiple stakeholders including business, product development, architecture and engineering teams to develop, deploy , monitor and maintain ML models.
• Assist in the communication of insights and the implementation of impactful data science solutions across the organization.

What you will need to have:

• Bachelor’s degree in Statistics, Data Science, Computer Science, Operations Research or related field.
• 5+ years of hands-on experience leveraging large sets of structured and unstructured data to develop data-driven tactical and strategic analytics and insights using ML, RAG, and NLP.
• 5+ years of experience formulating research or business problems, designing, experimenting, implementing and communicating solutions.
• Proficiency in tokenization and embeddings, as well as experience creating models, improving model training and tuning, and deploying Large Language Model architectures based on LLaMA, BERT, or Transformer-based models.
• Hands-on experience with Python, Hugging Face, TensorFlow, Keras, PyTorch and Agentic AI frameworks.
• Strong knowledge of statistical data analysis and machine learning techniques (e.g., SVM, regression, classification, clustering, time series) and familiarity with financial analytics, time series econometrics, payment processing and marketing strategies.
• Working knowledge of Hadoop, Hive, Impala, RDBMS, SQL, Snowflake, Vertica & RDBMS, or NoSQL Databases 
• Familiarity with data platforms and applications such as Azure ML, Databricks ML, AWS Sage maker and experience contributing to GitHub and open-source initiatives.

What would be great to have:

• Master’s degree, PhD, or equivalent practical experience, in Computer Science, or related technical field.
• Publication record in relevant conferences and/or participation in Kaggle competitions.

Important info about this role: 

• You must currently possess valid and unrestricted U.S. work authorization to be considered for this role. Individuals with temporary visas including, but not limited to, F-1 (OPT, CPT, STEM), H-1B, H-2, or TN, or any candidate requiring sponsorship, now or in the future, will not be considered for this role. 
• This role is on-site Monday through Friday. Fiserv considers in-person collaboration to be an essential part of this role as in-person office experiences help you with your overall onboarding experience and leads to stronger productivity.
• This is a full-time, direct-hire position, and no contract options for unsolicited agency submissions will be considered.

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Salary Range

$78,000.00 - $138,000.00

These pay ranges apply to employees in Massachusetts, California (excluding Sunnyvale) and District of Columbia. Pay ranges for employees in other states may differ.

It is unlawful to discriminate against a prospective employee due to the individual's status as a veteran.

For incentive eligible associates, the successful candidate is eligible for an annual incentive opportunity which may be delivered as a mix of cash bonus and equity awards in the Company’s