Data Scientist

Location

Boston, Chicago, Los Angeles, New York, San Francisco

Job Description

About L.E.K. Consulting:

L.E.K. Consulting is a premier global strategy consulting firm that partners with clients to solve their most critical business challenges and deliver high-impact outcomes. We bring deep industry expertise and rigorous, evidence-based insight to global corporations, growth companies and private equity investors, helping them turn strategy into action.

How do we deliver impact? It’s the people. We hire exceptional individuals and invest in their growth through hands-on client work, close collaboration and a culture of ownership, inclusion and continuous learning. Across every level, curiosity unites us and challenge excites us.

Founded more than 40 years ago, L.E.K. employs more than 2,200 professionals worldwide and is consistently recognized as one of the industry's best firms to work for. For more information, visitlek.com.

Overview of Role: 

We are actively looking for a Data Scientist to join L.E.K.’s rapidly growing DDA (Data, Digital, and AI) practice. This role sits within our Data Science & Engineering team and operates at the intersection of advanced analytics, machine learning and applied AI, building the models, applications and analytical products that power client engagements and L.E.K.'s proprietary IP.

The ideal candidate brings fluency in applied data science (e.g., model development and validation, experimentation, and deployment of models) alongside hands-on experience building and shipping LLM-based and agentic AI solutions. You will work directly with clients across multiple industries, translating complex technical work into measurable commercial outcomes, and partner with data scientists, strategy consultants and client teams to build solutions that create high client impact.

As part of a dynamic and growing team, there is every opportunity to carve out value added work, and to grow your skills and experience. You won’t just be a technical expert; you will work at the intersection of data science and commercial understanding, across a range of domains, to deliver analytically driven recommendations to our clients, with state-of-the-art training and the opportunity to shape how the firm adopts new methods.

Responsibilities

• Client engagements:

• Support end-to-end data science projects from conceptualization through to deployment, and deploy advanced machine learning models in clients' cloud environments, optimizing for scalability, performance, and reliability to address specific business challenges and objectives

• Support clients in strategically leveraging technical models, guiding them through the interpretation of results and the integration of actionable insights into their business workflows.

• Solve a wide variety of complex analytical challenges for clients, sometimes dynamically balancing multiple client engagements at one time

• Deliver across the full analytical stack: data aggregation and creation, cleaning and manipulation, commercial data science (geospatial, machine learning, predictive modelling, NLP, LLMs) and visualization

• Guide clients through the interpretation of analytical outputs and integration of data-driven insights into their business workflows

• Client / business development:

• Support Managing Directors in developing and scoping client proposals where data science, ML and AI capabilities are central to delivery

• Serve as the technical interface between the Data Science & Engineering team, consulting partners, and clients while ensuring alignment on fit, feasibility, and delivery expectations

• Translate technical requirements, outputs, and constraints into clear, actionable language for client-facing presentations and proposals

• Support the design and commercialization of new offerings across data science, ML, agentic AI, and LLM-powered analytics

• Capability development:

• Contribute to the development of state-of-the-art analytical apps, leveraging up-to-date in machine learning algorithms to solve complex problems

• Collaborate with a variety of stakeholders to continuously innovate on the apps, service lines and proprietary data assets we can offer

• Provide technical expertise and thought leadership on developing analytical tools, services lines, and proprietary data assets, and contribute to building these areas directly when applicable

• Uphold best-in-class standards in app development, software, data integrity, and ensuring solutions are both scalable and maintainable

• Support commercialization and upskilling of staff on relevant software, tools and techniques

Education

• Degree in a quantitative and/or business discipline preferred, examples include: Statistics, Computer Science, Data Science, Mathematics, Operations Research, Engineering, Economics

Qualifications

Data science

• A minimum of 2 years of experience in applied data science with a solid foundation in machine learning, statistical modeling, and analysis is required for a Data Scientist
• Strong knowledge, experience, and fluency in a wide variety of tools including Python with data science and machine learning libraries (e.g., scikit-learn, TensorFlow, PyTorch), Spark, SQL
• Technical understanding of machine learning algorithms; experience with deriving insights by performing data science techniques including classification models, clustering analysis, time-series modeling, NLP; technical knowledge of optimization is a plus
• Expertise in developing and deploying machine learning models in one of the cloud environments (AWS, Azure, GCP) with an understanding of cloud services, architecture, and scalable solutions. (e.g., Sagemaker, Azure ML, Kubernetes, Airflow)
• Demonstrated experience with MLOps practices, including continuous integration and delivery (CI/CD) for ML, model versioning, monitoring, and performance tracking to ensure models are efficiently updated and maintained in production environments
• Exposure to design, develop and deploy agentic AI systems (e.g., multi-agent orchestration, or automation workflows) using frameworks such as LangChain
• Hands-on experience with manipulating and extracting information on a variety of large both structured and unstructured datasets; comfort with best data acquisition and warehousing practices
• Proficient Excel, PowerPoint presentation and excellent communication skills, both written and oral

Stakeholder engagement

• Ability to understand and articulate requirements to technical and non-technical audiences, working alongside data science, engineering, and consulting teams
• Experience with commercial business analytics and in strategic consulting is preferred; exposure to one or more of L.E.K.’s core sectors (life sciences, healthcare, consumer, industrials, TMT) is a strong plus
• Strong problem-solving skills with the ability to translate business needs into technical solutions; comfortable working at pace in a fast-paced, entrepreneurial environment with a high degree of ownership
• Ability to achieve results through others; experience and proven success record working in matrix, agile and fast-growing environments; and assertive, intellectually curious and continuously driving towards excellence

Additional Information:  

• The expected base salary for this position is $110,000 - $120,000 annually. Actual compensation will be determined based on experience, qualifications, skills, and location. This position may also be eligible for discretionary bonus and a comprehensive benefits package.
• L.E.K. Consulting offers a competitive total rewards package including medical, dental, vision, life and disability insurance, 401(k) with employer contribution, HSA contributions (where applicable), paid time off, and other firm-sponsored benefits.
• This role is based in our Boston, Chicago, Los Angeles, New York, or San Francisco offices and follows our hybrid work model for U.S. offices.  We require employees to be in their assigned home office Tuesday, Wednesday, and Thursday each week, as well as the first Friday of each month.
• Applicants must be legally authorized to work in the United States on a permanent basis without the need for employer sponsorship. Unfortunately, we are unable to consider candidates requiring visa sponsorship, including but not limited to H-1B, TN, F-1 (OPT/CPT/STEM), or other work authorization.
• L.E.K. Consulting is an Equal Opportunity Employer. We are committed to providing equal employment opportunities to all qualified individuals regardless of race, color, religion, sex, sexual orientation, gender identity or expression, national origin, age, disability, protected veteran status, or any other characteristic protected by applicable federal, state, or local law.
• In accordance with applicable state and local laws, we will provide reasonable accommodations for qualified individuals with disabilities and for sincerely held religious beliefs, practices, or observances.
• For more information and to apply, please visit: https://www.lek.com/careers/apply