LegitScript

Senior Data Science Engineer

United States full-time Senior $160,000 - $175,000
full-time Senior level Technology & IT Salary listed Curated
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About the role

At LegitScript, we are passionate about making the internet and payment ecosystems safer and more transparent. We help companies of all sizes keep their services legal and safe for consumers. To do this, LegitScript combines big data with the world’s leading team of experts skilled in highly regulated and complex sectors, including transaction laundering detection, pharmaceuticals, online gambling, and more.

The result? Unmatched accuracy and deep risk analysis that identifies which commercial entities play by the rules, and which do not. Our diverse industry partnerships provide unique insights that keep businesses and governments at the forefront of emerging trends. That’s why LegitScript is trusted by the world's largest search engines, internet platforms, payment companies, and regulatory agencies.

Overview:

You'll own the full lifecycle — from raw data ingestion to model deployment to measuring real-world business impact — with a current focus on building a sophisticated risk detection system using LLMs, Generative AI techniques, and classical ML within our SaaS platform. This is not a pure engineering role or a pure research role. You'll need both, and you'll need to move fluidly between them.

What You'll Do:

Data Science & Applied ML

Research, prototype, and develop ML and LLM-based models to solve complex business problems, with a current focus on risk detection and prioritization

Wrap models into production-ready APIs and integrate them into our core product

Ensure model outputs are interpretable — translating predictions into actionable reason codes for end users

Partner directly with operational teams to gather feedback, refine features, and improve model relevance over time

Data Engineering

Design, build, and maintain scalable pipelines to ingest data from disparate sources into our data warehouse/lake

Implement robust data validation, quality checks, and transformation workflows across raw, curated, and serving layers

Build and maintain curated datasets optimized for both analytics and model training use cases

MLOps & Production Ownership

Implement and maintain CI/CD pipelines for both data workflows and ML model deployment across environments

Monitor pipeline latency, data drift, and model performance in production; design alerting and retraining triggers

Own the business outcomes of your models — define success metrics, track ROI, and iterate based on real-world efficacy

Manage infrastructure as code and containerized deployments to ensure reproducible, environment-consistent releases

What You'll Bring:

5–8+ years spanning data engineering and data science/ML, with a demonstrated track record of shipping models to production

Strong Python proficiency; experience with Spark/PySpark for large-scale data processing

Advanced SQL for complex transformation, analysis, and data modeling

Hands-on experience with cloud data platforms such as Databricks or Snowflake

Experience with ETL/ELT frameworks — dbt, Lakeflow Declarative Pipelines, Databricks Autoloader, Informatica, or similar

Familiarity with ML experiment tracking tools such as MLflow or Weights & Biases

DevOps fluency: Git-based development, branching strategies, CI/CD, IaC (DABs/Terraform), and Docker

Experience with orchestration tools such as Databricks Workflows or Apache Airflow

Strong Plus

Hands-on experience with LLMs and Generative AI techniques in a production context (prompt engineering, RAG architectures, fine-tuning, or evaluation frameworks)

Experience building or operating ML platforms, feature stores, or model registries

Prior work in risk, compliance, fraud detection, or other high-stakes ML domains

We succeed together, care deeply, stay curious, and inspire trust — and we look for those qualities in the people we hire. LegitScript offers competitive compensation, flexible work options, and a team that's genuinely invested in your success. If our mission resonates with you, we'd love to hear from you.

This job description is not designed to cover or contain a comprehensive listing of all activities, duties or responsibilities that are required of the employee. Duties, responsibilities and activities may change or new ones may be assigned at any time with or without notice.

Please note that visa sponsorship is not available for this position. We cannot support international remote work.

**We do not accept unsolicited applications from third-party recruiters or agencies for this job posting. Any candidate submission without a prior agreement will be considered the property of our company, and we will not be responsible for any fees or obligations related to such submissions. We encourage interested candidates to apply directly through our official channels.**

Originally posted on Himalayas

Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Senior
Technology & IT Business Development Data Analysis Figma MySQL Python Senior level

Likely questions

  1. Tell us about work you have done that is close to the Senior Data Science Engineer role.
  2. How would you approach your first 30 days at LegitScript?
  3. Which of Business Development, Data Analysis and Figma have you used recently, and what did it help you achieve?
  4. How have you led people, improved a process, or made a hard decision in a previous role?
  5. How do you handle busy days, changing priorities, or pressure at work?

Prepare before the call

  • A recent example that proves your experience with Business Development, Data Analysis and Figma.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Senior Data Science Engineer role because I can bring practical experience in Business Development, Data Analysis and Figma, learn the team quickly, and contribute to the outcomes LegitScript needs from this hire.

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