Senior Python Developer (Fintech)

EPAM Systems; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

EPAM Systems Inc. in the United States is seeking a Senior Python Developer (Fintech) to join our team. You will build data processing workflows in Python, optimize SQL for trading databases, and participate in CI/CD, code reviews, and Git workflows.

The role focuses on large-scale systems, reconciliation of data from multiple sources, and documenting discrepancies while collaborating across teams in a fintech environment.

Qualifications

• Minimum 5 years of Python development experience.
• Strong Python libraries: Pandas and NumPy.
• Experience with packaging/environments using Conda and Poetry.
• Proficiency in writing and optimizing SQL queries.
• Experience with Git workflows and code reviews.
• English proficiency at B2+ level.
• Familiarity with Linux CLI and SSH.
• Understanding of CI/CD pipelines and deployment processes.
• Knowledge of fixed income concepts is a plus.

Responsibilities

• Develop data processing workflows in Python and manage virtual environments.
• Write and optimize SQL queries for trading databases.
• Collaborate via Git with branching, PRs, and code reviews.
• Participate in CI/CD operations including building, testing, deploying, and rolling back changes.
• Analyze large, complex datasets such as loan-level tapes and model outputs.
• Reconcile results from different sources and explain discrepancies.
• Document differences found during reconciliation processes.

Skills

English B2+

Tools

Python

Pandas

NumPy

SQL

Git

Conda

Poetry

uv

Linux CLI

SSH

SMB/NFS

Job description

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