Data Scientist - National Federal Tax Services

Our Global Investment and Innovation Incentives ("Gi3") practice provides our clients a broad range of government credits and incentives ("C&I") services across more than 150 countries and regions worldwide.

With over 1,000 practitioners, the Gi3 tax team is a national team of specialists dedicated to providing comprehensive tax C&I services.

If you are a technology visionary with a passion for transforming global tax business with digital technology, consider working with the Gi3 technology team.

This is an exciting opportunity to support global execution of Deloitte's tax strategy as we shift from "doing digital" to "being digital" by reimagining how we engage with our clients, deliver our services, operate our business, and create value.

Work you'll do

We are seeking a Data Scientist with strong Generative AI (GenAI) and Natural Language Processing (NLP) skill to build and optimize LLM-powered prototypes and production-ready components.

You will design prompts and Retrieval-Augmented Generation (RAG) workflows, package models as APIs, and support cloud deployment while ensuring outputs are evaluated, monitored, and aligned to responsible AI expectations.

This role requires hand-on Python development, solid statistical modeling fundamentals, and the ability to communicate clearly across technical and non-technical stakehold ers.



* Application Development: Build and optimize GenAI/NLP models and prototypes using modern framework e.g., OpenAI, Hugging Face).


* Prompt Engineering: Design, test and refine prompts to improve quality and reduce risk (e.g., hallucinations, bias, unsafe outputs).


* RAG Workflows: Implement foundational Retrieval-Augmented Generation pipelines to enable context-aware applications.


* APIs and Cloud Development: Package models as APIs and support deployments on AWS (Amazon Web Services, Azure, or GCP (Google Cloud Platforms).


* Validation and Monitoring: Develop evaluation approaches and monitor model outputs for reliability, performance drift, and compliance needs.


* Documentation and Communication: Produce clear and technical documentation and explain designs, tradeoffs, and results to cross-functional partners.

Qualifications

Required:


* Ability to perform job responsibilities within a hybrid work model that requires US Tax Processionals to co-locate in person 2-3 days per week


* Limited immigration sponsorship may be available


* Ability to travel 25% on average, based on the work you do and the clients and industries/sectors you serve.


* Bachelor's Degree in Information Systems, Computer Science or related field required.


* 3+ years of experience in data science / machine learning


* 1+ year hands-on building LLM/NLP solutions


* Strong Python proficiency and hands-on experience with GenAI frameworks such as LangChain, OpenAI/GPT APIs and Hugging Face


* Familiarity with software engineering best practices such as Git, CI/CD, automated testing...