Lead Data Scientist, New York - Contract at ION Group

New York, New York, United States

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Not SpecifiedCompensation

Senior (5 to 8 years), Expert & Leadership (9+ years)Experience Level

Full TimeJob Type

UnknownVisa

FinTech, Finance, Investment BankingIndustries

Requirements

8+ years of experience in data science, including at least 2–3 years in a lead/principal role
Strong background in applied machine learning, statistical modeling, and predictive analytics
Proficiency in Python (Pandas, NumPy, Scikit-learn, Matplotlib, PyTorch/TensorFlow) and SQL; experience with big data tools (Spark, Databricks) is a plus
Strong understanding of model deployment, MLOps practices, and productionizing ML solutions
Proven ability to create effective data visualizations for storytelling and decision support
Excellent client-facing skills, with the ability to communicate technical concepts and business impact
Master’s or Ph.D. in Computer Science, Data Science, Statistics, Applied Mathematics, or a related field
Nice to Have: Some fluency in blockchain and smart contract analytics

Responsibilities

Partner with stakeholders to define data science opportunities, shape problem statements, and deliver impactful solutions
Lead end-to-end data science projects—from exploration and modeling to deployment and performance monitoring
Mentor and guide a team of data scientists and data engineers; set best practices for modeling, experimentation, and validation
Design and implement predictive models, optimization frameworks, and machine learning algorithms tailored to complex business use cases
Develop and present compelling visualizations to convey complex data relationships through clear and insightful static graphics
Communicate complex technical concepts clearly to senior stakeholders, clients, and non-technical audiences
Collaborate with Lab49’s design and engineering teams to embed data science models into scalable digital products
Stay ahead of industry trends, research, and emerging technologies in AI/ML, with a focus on practical business applications

Skills

Key technologies and capabilities for this role

Machine LearningPredictive ModelingData AnalyticsData VisualizationOptimization FrameworksModel DeploymentAI/MLData ScienceStakeholder CommunicationMentoring

Questions & Answers

Common questions about this position

What is the employment type for this Lead Data Scientist role?

This is a contract position as a contractor.

Is this Lead Data Scientist role remote or office-based?

This information is not specified in the job description.

What skills and experience are required for this position?

Candidates need 8+ years in data science with 2-3 years in a lead role, proficiency in Python (Pandas, NumPy, Scikit-learn, Matplotlib, PyTorch/TensorFlow) and SQL, strong machine learning and statistical modeling background, MLOps experience, data visualization skills, and a Master's or Ph.D. in a relevant field.

What is the company culture like at Lab49/ION?

Lab49/ION is committed to maintaining a supportive and inclusive environment for people with diverse backgrounds and experiences, respecting varied identities, abilities, cultures, and traditions.

What makes a strong candidate for this Lead Data Scientist role?

A strong candidate has 8+ years of data science experience including lead roles, deep expertise in machine learning and Python/SQL, client-facing communication skills, and the ability to mentor teams and deliver end-to-end projects; blockchain knowledge is a nice-to-have.

ION Group

Automation technology for financial sector clients

About ION Group

ION Group specializes in automation technology tailored for the financial sector, primarily serving institutional clients like investment banks, asset managers, and brokers. The company provides advanced software solutions that enhance trading, processing, and risk management activities in global financial markets. ION's products include sophisticated software platforms and APIs that enable clients to connect seamlessly to various trading venues and exchanges, ensuring efficient and accurate transactions. Unlike many competitors, ION stands out by acquiring entrepreneurial firms, which allows it to remain agile and responsive to market changes. The company's goal is to enhance efficiency and reduce operational risks for its clients through automation and innovative technology.

London, United KingdomHeadquarters

1998Year Founded

$426.5MTotal Funding

GROWTH_EQUITY_VCCompany Stage

Enterprise Software, FintechIndustries

5,001-10,000Employees

Benefits

Health, dental, and vision insurance

AD&D and disability insurance

Flexible spending account

Health savings account

Life insurance

Mental health care

401K plan

Performance bonus

Supplemental workers' compensation

Family medical leave & parental leave

PTO, paid holidays, sick days, bereavement leave, and volunteer time off

Commuter checks

Company social events

Employee assistance program

Free lunch

mobile phone discount

Risks

Complexity in consolidating trading platforms may lead to operational inefficiencies.

US Treasury market's clearing mandate could impose significant compliance costs.

Potential global tariffs by Trump administration may disrupt ION's global operations.

Differentiation

ION Group specializes in automation technology for the financial sector.

The company offers sophisticated software platforms and APIs for seamless trading.

ION Group constantly innovates to enhance efficiency and reduce operational risks.

Upsides

Increased demand for automation drives innovation in AI-driven trading platforms.

The rise of DeFi creates opportunities for blockchain integration in financial services.

Growing importance of ESG criteria pushes adoption of efficient reporting tools.

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