Senior Data Scientist

About the position

As part of our diverse tech team, you can architect, code and ship software that makes us an essential part of our customers' digital lives. Here, you can work alongside talented engineers in an open, supportive, inclusive environment where your voice is valued, and you make your own decisions on what tech to use to solve challenging problems. Amex offers a range of opportunities to work with the latest technologies and encourages you to back the broader engineering community through open source. And because we understand the importance of keeping your skill fresh and relevant, we give you dedicated time to invest in your professional development. Find your place in technology on #TeamAmex. Infrastructure Data & Analytics aims to establish and reinforce a culture of effective metrics, data-driven business processes, architecture simplification, and cost transparency. As the Data Science team in Global Infrastructure Product Services embarks on building and deploying advanced data science and machine learning (ML) models, we are looking for a senior data scientist to build, deploy and monitor models in production. This is an individual contributor role with responsibilities ranging from hand-on coding, debugging, documentation to stakeholder management and presentations. A successful data scientist knows that delivering on that promise takes foresight, planning and agility. We are seeking data scientists who are not only technically adept, but also understand the importance of harnessing the power of data to streamline financial operations, enhance decision-making and improve business outcomes. This team is focused on developing and maintaining dynamic technology infrastructure cost allocation and production models. The financial forecasting models will help ensure that our technology spending is transparent, efficient, and properly aligned with our strategic objectives. The role requires a blend of technical prowess in data engineering, data science, MLOps, and an understanding of enterprise infrastructure components & their economics.

Responsibilities

• Design and build scalable solutions using AI and Machine Learning (Generative AI, Natural Language Processing, Reinforcement Learning, and Time Series predictions) in document understanding, financial forecasting, and optimizing infrastructure resource utilization.
• Own the model building and refining from identifying business problems, hands-on coding to curate training dataset, analyze data & validate models to delivering production grade solutions at scale.
• Drive high-level and detailed technical design conversations.
• Own and deliver documentation and methods required for model review with the model governance teams.
• Be responsible for health and quality of the code across the portfolio, including leadership over innovation, functional testing, and CI/CD tool integration.
• Work closely with stakeholders across Technology, Finance and business unit portfolio leaders to define scope, requirements and incorporate cost drivers, allocation methods, and infrastructure nuances.
• Ensure best practices are aligned with Enterprise Architecture and Decision Science COEs.
• Develop SQL queries, scripts and routines to automate data processing and enhance the model's accuracy and efficiency.
• Generate insightful data visualization and reports to aid in decision-making.
• Lead training sessions and create comprehensive documentation to empower end users to leverage the cost model effectively.
• Provide technical mentorship to team members at junior levels.
• Function as an active member of an agile team.

Requirements

• Master's degree in Data Science, Mathematics, Computer Science, Engineering, Information Systems, or related STEM fields.
• 3+ years full lifecycle product development and engineering leadership in highly available, highly scalable, and high throughput systems.
• Experience in deploying out-of-the box LLMs and Generative AI solutions including setting up Vector DBs, Graph-RAG and extensive testing of LLMs.
• Hands-on knowledge of Chain-of-Thoughts, Tree-of-Thoughts, Graph-of-Thoughts prompting strategies.
• Demonstrated experience with knowledge graphs.
• Experience in building and owning data science solutions and pipelines within the MLOps ecosystem in Vertex AI.
• Hands-on expertise with handling distributed (multi-tiered) systems and automated testing - unit and performance testing.
• Demonstrated experience in building and deploying a diverse set of Machine Learning (GLM, GBM, Neural Networks), Time series forecasting models and NLP solutions at scale.
• Proficiency and Hands-on Experience with Git, CI/CD tools, Elasticsearch, and a solution in each category: Orchestration, Container, Model Serving, Observability, and Feature Store.
• Strong proficiency in programming with Python, Machine Learning libraries and APIs (TensorFlow, Keras, PyTorch, ScikitLearn, H20.ai, XGBoost).
• Experience in data visualization and observability with a focus on real time serving and monitoring of time series data with alerts.
• Strong project management skills and effective stakeholder management skills, coupled with a continuous improvement mindset.
• Excellent presentation and communication skills, capable of explaining complex technical choices in simple terms to a diverse audience.

Nice-to-haves

• Experience in Financial Services industry is preferred.
• Thorough understanding of enterprise infrastructure technologies (Compute, Storage, Network, Mainframe) to inform model development is preferred.

Benefits

• Competitive base salaries
• Bonus incentives
• 6% Company Match on retirement savings plan
• Free financial coaching and financial well-being support
• Comprehensive medical, dental, vision, life insurance, and disability benefits
• Flexible working model with hybrid, onsite or virtual arrangements depending on role and business need
• 20+ weeks paid parental leave for all parents, regardless of gender, offered for pregnancy, adoption or surrogacy
• Free access to global on-site wellness centers staffed with nurses and doctors (depending on location)
• Free and confidential counseling support through our Healthy Minds program
• Career development and training opportunities