Senior Python Developer (Fintech)

We are hiring a Senior Python Developer (Fintech) to join us, with a strong technical background in application development and deployment pipelines, focusing on large-scale systems and trading databases.

Working hours run until 8–9 PM.

Responsibilities

• Develop data processing workflows using Python and manage virtual environments
• Write and optimize SQL queries for trading databases
• Collaborate via Git, including branching, creating Pull Requests, and conducting code reviews
• Participate in CI/CD pipeline operations, including building, testing, deploying, and rolling back changes when needed
• Analyze large, complex datasets such as loan-level tapes and model outputs
• Reconcile results from different sources and investigate underlying discrepancies
• Explain and document differences found during data reconciliation processes

Requirements

• 5+ years of experience as a Python Developer
• Proficiency in Python, Pandas, and NumPy
• Flexibility to use conda, poetry, and uv for packaging and virtual environment management
• Skills in writing and optimizing SQL queries
• Background in analyzing large, messy datasets such as loan-level tapes and model outputs
• Capability to reconcile two results and explain the difference
• Experience with Git, including branching, Pull Requests, and code reviews
• Proficiency in English at a B2+ level

Nice to have

• Knowledge of SQL Server/T-SQL
• Familiarity with Linux command line, SSH, and mixed Windows/Linux file shares (SMB/NFS)
• Understanding of CI/CD pipeline functions, including building, testing, deploying, and rolling back changes
• Background in fixed income basics: price/yield, duration and convexity, spreads (OAS, Z spread), coupon vs 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
• Conda
• poetry