Data Scientist and Model Developer
Offer summary

(Summary generated by AI based on the full job description)

The project involves development and testing of AI, ML, and GenAI models in an AML transaction monitoring system. It requires expertise in statistical modeling and transactional data handling, including Python (Pandas, NumPy), SQL, Big Data skills and experience with TensorFlow, PyTorch, Keras, scikit-learn, XGBoost, LightGBM frameworks. Responsibilities include model development, performance evaluation, documentation, lifecycle management, and AML risk analysis. The role is a fixed-term contract until December 2027.

Data Scientist and Model Developer

Company: Citi Poland

from: 8 September 2026
to: 8 October 2026
salary not specifiedagency agreement (full-time)
Offer parameters
level:head
working mode:hybrid
location:Warszawa, Masovian
Warszawa, Masovian

Requirements

Expected technologies

SQL

Our requirements

  • 5+ years of experience and strong Financial Crimes knowledge - AML model development requires a deep understanding of AML typologies and sophisticated detection scenarios
  • Consistently demonstrates clear and concise written and verbal communication skills
  • Proven project management and organizational skills and capability to handle multiple projects at one time
  • Experience in a quantitative role in risk management at a financial institution with experience in either model development or validation.
  • Comprehensive knowledge of statistical and AI/ML model development and maintenance methodologies, including risk models, coupled with an understanding of relevant regulatory expectations and Citi's Risk Appetite for model application.
  • Strong programming experience for data analysis and processing using Python (including Pandas, NumPy), SQL, and Big Data solutions.
  • Experience with deep learning frameworks like TensorFlow, PyTorch, or Keras and commonly used ML libraries (scikit-learn, XGBoost, LightGBM)
  • University degree (Master or PhD) in statistics, computer science, quantitative economics, mathematics, or related fields.

Your responsibilities

  • Develops, enhances, and monitors AI/ML and GenAI models within the AML transaction monitoring system.
  • Manages model across the model life-cycle including model development, ongoing performance evaluation and annual model reviews.
  • Translates business operational requests into programming and data criteria, conducts systems and operational research, and assists in developing analytic engines with detailed technical documentation for validation.
  • Identifies modeling opportunities yielding measurable business results, presents recommendations to senior staff.
  • Contributes to strategic, cross-functional AML initiatives and independently leads large project.
  • Appropriately assess risk in business decisions, prioritizing firm reputation and safeguarding Citigroup, clients, and assets. This involves ensuring compliance with laws, rules, and regulations, adhering to Policy, exercising sound ethical judgment, and transparently escalating, managing, and reporting control issues.
  • Qualifications:
  • 5+ years of experience and strong Financial Crimes knowledge - AML model development requires a deep understanding of AML typologies and sophisticated detection scenarios
  • Consistently demonstrates clear and concise written and verbal communication skills
  • Proven project management and organizational skills and capability to handle multiple projects at one time
  • Experience in a quantitative role in risk management at a financial institution with experience in either model development or validation.
  • Comprehensive knowledge of statistical and AI/ML model development and maintenance methodologies, including risk models, coupled with an understanding of relevant regulatory expectations and Citi's Risk Appetite for model application.
  • Strong programming experience for data analysis and processing using Python (including Pandas, NumPy), SQL, and Big Data solutions.
  • Experience with deep learning frameworks like TensorFlow, PyTorch, or Keras and commonly used ML libraries (scikit-learn, XGBoost, LightGBM)
  • University degree (Master or PhD) in statistics, computer science, quantitative economics, mathematics, or related fields.
  • What we offer:
  • Fixed term con

About the project

Data Scientist and Model Developer is a strategic professional who stays abreast of developments within own field and contributes to directional strategy by considering their application in own job and the business. Recognized technical authority for an area within the business.
Key responsibilities involve the development, enhancement, and statistical testing of Artificial Intelligence (AI), Machine Learning (ML), and Generative AI (GenAI)  models within Citi's Anti- Money Laundering (AML) transaction monitoring system. This requires the ability to process transactional data and execute complex statistical analyses, data visualizations, and algorithm simulations.
This is a temporary role, till the end of December 2027.

The World's Most Global Bank

Citi is the leading global bank with a history spanning more than 200 years and which serves more than 200 million customer accounts and does business in more than 160 countries and jurisdictions. Citi provides consumers, corporations, governments and institutions with a broad range of world-class financial products and services, including consumer banking and credit, corporate and investment banking, securities brokerage, transaction services and wealth management.

Citi Solutions Centre Poland

Citi Solutions Centre Poland, acting under Citibank Europe plc has locations in both Warsaw (HQ) and Olsztyn. We opened in 2005 with just 57 employees; today we are a diverse team of over 5000 serving 96 countries from all continents. We work across the full spectrum of Citi business areas, including Anti-Money Laundering, Markets & Securities Services, Private Bank Operations, Technology, Treasury and Trade Solutions, Internal Audit, and more.
The Fund Accounting Expert (AVP - Assistant Vice President) is a senior role responsible for participating in a variety of fund valuation activities in coordination with the Operations - Transaction Services team. The overall objective of this role is to assist in the calculation of daily and periodic Net Asset Valuations (NAVs) for funds and the distribution of associated unit prices.
If you are looking for a role where you can participate in project and migrations, this is the right place for you!
Company

What we offer

  • Fixed term contract till the end of December 2027
  • Employer paid Defined Contribution Pension Plan contribution of 6% of employee’s pensionable earnings (PPE Program)
  • Employer paid Private Medical Care Package for employees and Private Medical Care Packages for certain family members available at preferential rates
  • Employer paid Life Insurance Program for employees and Life Insurance for certain family members available at preferential rates
  • Employee Assistance Program financed by Employer
  • Paid Parental Leave Program (maternity and paternity leave; statutory and 2 weeks additional paid paternity leave)
  • Sport Card for employees subsidized via Social Benefits Fund and Sport Cards for certain family members available at preferential rates
  • Additional benefits from Company’s Social Benefit Fund, in particular: Holidays Allowance, support for sport and cultural activities, team building events.
  • Additional day off for volunteering
  • Cafeteria/ flex benefit – a company benefits system which enables employees to select and purchase benefits offered by a provider and available for employees on the platform.
  • Opportunity to receive an annual discretionary incentive award
  • Special offers and discounts for employees
  • Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self every day. We want the best talent around the world to be energized to join us, motivated to stay, and empowered to thrive.

Benefits

  • sharing the costs of sports activities
  • private medical care
  • sharing the costs of foreign language classes
  • sharing the costs of professional training & courses
  • life insurance
  • flexible working time
  • fruits
  • corporate products and services at discounted prices
  • corporate sports team
  • retirement pension plan
  • preferential loans
  • video games at work
  • coffee / tea
  • leisure zone
  • extra social benefits
  • employee referral program
  • charity initiatives
  • Hybrid work opportunities

Citi Poland

See Job Description
Data Scientist and Model Developer
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Citi Poland
Warszawa, Masovian
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