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# Senior Python Software Engineer

- **Company:** Zip Staff Inc.
- **Location:** Tysons, VA, United States
- **Experience:** Expert
- **Salary:** $145,600.0 - $149,760.0
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, Accounting Systems, Agile Methodology, Application Layers, Automation of Tests, Unit Testing, Code Review, Relational Databases, Integrated Development Environments, Python (Programming Language), Object-Oriented Software Development, Standard Sql, Scripting, Git, Pandas, Pytest, Containerization, Integration Tests, Kubernetes, Code Restructuring, Docker
- **Published:** August 4, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=070729c80fe33e5e

## About the Role

* Minimum 5 years of hands-on production-grade Python software engineering experience (scripting or automation-only backgrounds will not be considered)
 * Strong Object-Oriented Programming (OOP) skills in Python
 * Solid experience with unit testing and automated test frameworks (pytest strongly preferred)
 * Experience with Git in a team-based development environment
 * Strong SQL and relational database skills
 * Ability to write clean, testable, high-quality code and work in an Agile environment
 * Excellent problem-solving and communication skills
 * Ability to work on-site in Tysons, VA, * Experience with Pandas
 * Familiarity with containerization (Docker/Kubernetes)
 * Exposure to financial forecasting, fixed income concepts, or accounting systems
 * Experience supporting production systems with high accuracy and reliability requirements

Interview Process

 * Candidates must demonstrate strong live coding and technical depth during the on-site interview
 * In person interview, * Are you legally authorized to work in the United States?
 * Will you now or in the future require employer sponsorship for employment authorization?
 * Do you have strong Object-Oriented Programming (OOP) experience in Python along with unit testing using frameworks such as pytest?

Experience:

 * production-grade Python software engineering: 5 years (Required)

## Description

ZipStaff is seeking a Senior Python Software Engineer to join a high-impact financial forecasting and accounting platform team at a major financial institution.

You will work on the Checkmate platform (the modern replacement for a legacy system), focusing on refactoring existing components, building new custom features, and performing heavy integration and testing work. This role requires strong production-grade Python engineering skills and the ability to deliver clean, well-tested, object-oriented code.

What You'll Do

 * Refactor and modernize existing components of a financial forecasting and accounting application
 * Design and develop new custom components and integrate them into the Checkmate platform
 * Perform heavy integration work across data, services, and application layers
 * Write clean, maintainable, production-grade Python code using solid Object-Oriented Programming principles
 * Develop and maintain strong automated unit and integration tests (pytest or equivalent)
 * Support critical production runs, troubleshoot issues, and ensure accuracy and reliability of outputs
 * Collaborate with stakeholders and team members to analyze requirements and deliver end-to-end solutions
 * Participate in code reviews, design discussions, and continuous improvement of engineering practices


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