Senior Python Developer

Benefits:

Onsite

Competitive salary

Opportunity for advancement

Title:Senior Python Developer Location: McLean, VA — 100% Onsite (Monday to Friday) Duration: Long Term Interview Mode: In-Person

We are seeking a Senior Software Developer with strong Python expertise to support mission-critical applications built on modern software development frameworks.

The developer will contribute to new feature development, defect resolution, technical debt reduction, enhancements, and migration efforts across both customer-facing and internal applications. The role spans full lifecycle development including server operations, backend and frontend work, testing, validation, and ongoing maintenance.

Key Requirements

10+ years of hands-on professional experience in Python development

Strong experience building scalable applications using:

Pandas

Pytest

NumPy

Flask

Solid understanding of:

Design patterns

OOP principles

Data structures

Algorithm optimization

Experience with build and integration tools:

Python workflow tools

Jenkins

Git

Docker

Familiarity with databases such as:

SQL Server

Sybase

Redis

MongoDB

Prior experience in Financial / Mortgage / Fintech domain is required

Strong financial or accounting acumen to understand business requirements and validate feature implementations

Responsibilities

Design, develop, test, and support financial engineering applications and services

Resolve defects and address technical debt while maintaining best development practices

Write clean, maintainable, high-quality code with strong unit and integration test coverage

Collaborate across infrastructure layers and cross-functional teams

Support infrastructure upgrades and new technology adoption

Contribute to collaborative problem-solving and high-quality system design