Lead Python Developer (Fintech)

We're looking to add a Lead Python Developer (Fintech) to our team—someone with solid technical expertise in building applications and managing deployment pipelines, particularly for large-scale systems and trading databases.

Please note that work hours extend to 8–9 PM.

Responsibilities

• Build data processing workflows leveraging Python while managing virtual environments
• Craft and fine-tune SQL queries designed for trading databases
• Work collaboratively through Git, covering branching, Pull Request creation, and code review processes
• Engage in CI/CD pipeline tasks, encompassing builds, testing, deployments, and rollbacks as necessary
• Examine large and intricate datasets, including loan-level tapes and model outputs
• Cross-check results originating from multiple sources and probe into any discrepancies found
• Document and clarify variances identified throughout data reconciliation work

Requirements

• A minimum of 7 years working as a Python Developer
• Strong command of Python, Pandas, and NumPy
• Adaptability in using conda, poetry, and uv for managing packages and virtual environments
• Expertise in crafting and refining SQL queries
• Experience handling large, unstructured datasets such as loan-level tapes and model outputs
• Ability to reconcile two sets of results and articulate the reasoning behind differences
• Hands-on experience with Git, including branching, Pull Requests, and code review practices
• English proficiency at a B2+ level or higher

Nice to have

• Familiarity with SQL Server/T-SQL
• Comfort working with Linux command line, SSH, and hybrid Windows/Linux file shares (SMB/NFS)
• Knowledge of how CI/CD pipelines operate, including builds, testing, deployment, and rollback procedures
• Foundational understanding of fixed income concepts: price/yield relationships, duration and convexity, spread types (OAS, Z spread), the distinction between coupon and yield, and accrued interest

We offer

• We gather like-minded people:
• • Top tech minds driving innovation in AI, cloud and digital platform modernization
  • Supportive team and agile, startup-like culture
  • Hybrid by design mode and opportunity to work remotely within Poland
  • Chance to work abroad for up to 60 days annually
  • Business-driven relocation opportunities
• We provide growth opportunities:
• • Career development programs
  • Thought leadership, mentoring, soft skills and well-being programs
  • Certification (Anthropic, Gemini, GCP, Azure, AWS)
  • English classes
• We cover it all:
• • Stable pay
  • Participation in the Employee Stock Purchase Plan with a 15% discount
  • Benefits package (health insurance, multisport, shopping vouchers)
  • Referral bonuses up to $2,000
  • Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and more
  • Corporate, social and well-being events
• Please, note:
• • Benefits listed above are available to employees only
  • We are open for working with Contractors. Terms of B2B cooperation agreements are agreed individually
  • We will reach out to selected candidates exclusively

EPAM is global leader in AI transformation engineering and integrated consulting, serving Forbes Global 2000 companies and ambitious startups. With over thirty years of expertise in custom software, product and platform engineering, we empower our clients to become AI-Native enterprises, driving measurable value from innovation and digital investments.

Tech stack

• Python
• Pandas
• NumPy
• SQL
• Git
• CI/CD
• data processing