Job Title: Senior Software Developer – Financial Applications & Risk.
Location: McLean, VA (On-site).
Employment Type: Contract (W2 through ZipStaff — No C2C or 1099).

About the Opportunity:

ZipStaff is seeking a Senior Software Developer to support the Investments & Capital Markets forecasting platform at a major financial institution in McLean, VA.

You will develop and enhance core features of enterprise forecasting engines used for long-term financial projections, strategic planning, and critical quarterly/yearly production runs. This role combines strong production software engineering with financial-application depth — refactoring existing components, improving model accuracy and performance, and partnering with FP&A stakeholders.

What You’ll Do:

Refactor and modernize existing components of the financial accounting and forecasting application.
Develop and enhance core forecasting-engine features to improve model accuracy, runtime efficiency, and enterprise readiness.
Support critical quarterly production runs used in financial reporting — monitor execution, troubleshoot issues, and protect integrity, accuracy, and timeliness of outputs.
Diagnose and resolve defects, reduce technical debt, and drive continuous engineering improvements.
Write clean, robust, high-quality code with automated unit and integration tests and strong coverage.
Coordinate across data, services, APIs, and infrastructure layers to deliver end-to-end solutions.
Partner with FP&A and other stakeholders to implement new forecasting capabilities, support scenario analysis, and meet business and regulatory requirements.
Assist with infrastructure upgrades, platform migrations, and adoption of new technologies.
Contribute to design discussions, code reviews, and documentation.

Required Qualifications:

4+ years of hands-on software development using a modern language (Python, Java, or C#).
Experience with Git in a team-based development environment.
Experience with SQL and relational database development.
Experience with unit-testing frameworks (pytest, JUnit, or equivalent) and automated test coverage.
Proficiency with shell scripting for automation, troubleshooting, and operational support.
Experience with containerization and orchestration (Docker, Podman, or Kubernetes).
Strong critical thinking, problem-solving, and communication skills.
Familiarity with Agile development processes.
Ability to work on-site in McLean, VA.
Must be legally authorized to work in the United States without sponsorship now or in the future.

Preferred Qualifications:

Financial-domain experience, especially fixed income concepts (duration, convexity, spread, OAS).
Understanding of GAAP accounting fundamentals (revenue/expense recognition, amortization).
Graduate degree in Computer Science, Mathematics, Statistics, or a related quantitative field.
CFA, FRM, CPA, or significant progress toward one of these.
Experience engaging stakeholders to gather requirements and drive delivery.
Exposure to Jira or similar planning/tracking tools.

About ZipStaff:

ZipStaff partners with leading organizations to connect skilled technology professionals with high-impact contract opportunities. We focus on quality matches and long-term success.

To apply, please submit your resume highlighting your production software engineering experience (Python/Java/C#), SQL and unit testing, and any financial forecasting or fixed-income background.

ZipStaff Inc.

Senior Software Developer – Financial Applications & Risk

About the Job