Position Description:

CGI has an immediate need for a Senior Data Scientist to join our team. This is an exciting opportunity to work in a fast-paced team environment supporting one of the largest leaders in the secondary mortgage industry. We take an innovative approach to supporting our client, working side-by-side in an agile environment using emerging technologies.
• This position is located at a client site in Reston, VA or Plano, TX. A hybrid working model is acceptable.
• We partner with 15 of the top 20 banks globally, and our top 10 banking clients have worked with us for an average of 26 years!
• We have over 92,000+ CGI Members in 40 countries and over 5k+ loyal Clients who are leveraging our end-to-end services across the globe.

Your future duties and responsibilities:

We are seeking a highly skilled and innovative Senior Data Scientist with a strong academic background (PhD or Master's) in Computer Science, Technology, Economics, Mathematics, or a related quantitative field. This role is ideal for someone passionate about solving complex problems using advanced analytics, time series modeling, anomaly detection, and generative AI technologies. You will work on cutting-edge projects involving large-scale data, cloud-native AI solutions, and next-generation machine learning models. Your work will directly influence strategic decisions and product innovation across the organization.​

Required qualifications to be successful in this role:

• Design, develop, and deploy time series forecasting models and anomaly detection systems for mission-critical applications.
• Build and fine-tune Generative AI models (e.g., Claude, GPT, open-source LLMs) on AWS and other cloud platforms.
• Analyze and model large-scale structured and unstructured datasets using distributed computing frameworks (e.g., Spark, Dask, Ray).
• Collaborate with cross-functional teams including engineering, product, and business stakeholders to translate data insights into strategic actions.
• Develop and maintain data pipelines, feature stores, and model monitoring systems to ensure robust and scalable ML solutions.
• Stay current with the latest research in AI/ML and contribute to internal knowledge sharing and innovation.

Required qualifications to be successful in this role

• PhD or Master's degree in Computer Science, Mathematics, Economics, Statistics, or a related field.
• 5+ years of experience in data science, machine learning, or applied AI roles.
• Strong expertise in time series analysis, anomaly detection, and forecasting techniques.
• Hands-on experience with Generative AI models (e.g., Claude, GPT, LLaMA) and prompt engineering.
• Proficiency in Python, SQL, and ML libraries such as scikit-learn, TensorFlow, PyTorch, Prophet, etc.
• Experience working with big data technologies (e.g., Spark, Hadoop, AWS EMR, Redshift, Snowflake).
• Familiarity with cloud platforms (AWS preferred) and MLOps tools (e.g., SageMaker, MLflow, Airflow).
• Strong communication skills and the ability to explain complex technical concepts to non-technical stakeholders.

Desired Skillset

• Experience with causal inference, Bayesian modeling, or reinforcement learning.
• Publications or contributions to open-source projects in AI/ML.
• Experience with LLM fine-tuning, vector databases, and retrieval-augmented generation (RAG).
• Knowledge of data privacy, model fairness, and ethical AI practices.

Education:
PhD or Master's degree in Computer Science, Mathematics, Economics, Statistics, or a related field.



CGI is required by law in some jurisdictions to include a reasonable estimate of the compensation range for this role. The determination of this range includes various factors not limited to skill set, level, experience, relevant training, and licensure and certifications. To support the ability to reward for merit-based performance, CGI typically does not hire individuals at or near the top of the range for their role. Compensation decisions are dependent on the facts and circumstances of each case. A reasonable estimate of the current range for this role in the U.S. is $75,600.00 - $186,000.00
Benefits
CGI’s benefits are offered to eligible professionals on their first day of employment to include:

•Competitive compensation


•Comprehensive insurance options


•Matching contributions through the 401(k) plan and the share purchase plan


•Paid time off for vacation, holidays, and sick time


•Paid parental leave


•Learning opportunities and tuition assistance


•Wellness and Well-being programs

Skills:

• Big Data
• Python
• SQL

What you can expect from us:

Together, as owners, let’s turn meaningful insights into action.

Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you’ll reach your full potential because…

You are invited to be an owner from day 1 as we work together to bring our Dream to life. That’s why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company’s strategy and direction.

Your work creates value. You’ll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.

You’ll shape your career by joining a company built to grow and last. You’ll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.

Come join our team—one of the largest IT and business consulting services firms in the world.