Senior Full Stack Software Developer

Argyllinfotech (Virginia, USA) Follow 5 hours ago

Job Title: Senior Full Stack Software Developer (Java/Python | Financial Applications)

Work Location

100% Onsite McLean, VA
Candidates must be local or willing to relocate prior to the start date.
Onsite interview required for the first round.

Position Type: Contract (C2C)
Duration: 6+ Months
No. of Positions: 1

Position Overview

We are seeking a highly experienced
Senior Full Stack Software Developer with strong expertise in
Java, Python, SQL, Git, and modern software engineering practices to support enterprise financial forecasting and accounting applications. This role focuses on enhancing and modernizing mission-critical forecasting engines, improving application performance, scalability, and reliability while supporting enterprise financial reporting initiatives.

The ideal candidate will have a solid software engineering background, experience developing enterprise applications, and exposure to financial systems, particularly within
fixed income or financial accounting domains.

Key Responsibilities

Design, develop, and enhance enterprise financial forecasting and accounting applications.
Refactor legacy components to improve scalability, maintainability, and performance.
Develop new forecasting engine capabilities supporting enterprise financial planning.
Build high-quality, reusable, and maintainable software using Java and Python.
Write efficient SQL queries and optimize database interactions.
Develop and maintain RESTful APIs and backend services.
Support quarterly and annual production runs for financial reporting.
Troubleshoot production issues and resolve software defects.
Create comprehensive unit and integration tests to ensure application quality.
Collaborate with cross-functional teams, including FP&A, product owners, and business stakeholders.
Participate in architecture discussions, code reviews, and Agile ceremonies.
Support infrastructure upgrades, platform modernization, and technology migrations.
Document technical designs and contribute to engineering best practices.

Required Technical Skills

Programming Languages

Python
Java
C# (acceptable alternative)
Object-Oriented Programming (OOP)

Software Development

Full Stack Development
Enterprise Application Development
API Development
Software Design Patterns
Application Modernization

Databases

SQL
Relational Databases
Query Optimization
Data Modeling

Python Libraries

Pandas
Data Processing
Data Analysis

Version Control

Git
Git Branching
Pull Requests
Code Reviews

Testing

Unit Testing
PyTest
JUnit
Test Automation
Integration Testing

Containers & DevOps

Docker
Kubernetes
Podman
CI/CD
Containerization

Automation

Shell Scripting
Linux
Command Line Automation

Agile

Agile Scrum
JIRA
Sprint Planning
Continuous Improvement

Financial Domain Experience

Candidates should have experience or knowledge of:

Fixed Income Products
Duration
Convexity
Credit Spread
Option-Adjusted Spread (OAS)
Financial Forecasting
Financial Accounting Systems
Enterprise Financial Reporting

Required Qualifications

Minimum 5+ years of hands-on software development experience.
Strong programming expertise in Python and/or Java.
Experience using Git in collaborative development environments.
Strong SQL and relational database experience.
Experience working with Pandas.
Hands-on experience with automated unit testing.
Experience developing enterprise-grade software applications.
Strong analytical and problem-solving abilities.
Excellent communication and collaboration skills.
Experience working in Agile development environments.

Preferred Qualifications

Experience with Docker, Kubernetes, or Podman.
Shell scripting experience.
Financial services or capital markets experience.
Strong understanding of fixed income concepts.
Knowledge of GAAP accounting principles.
Graduate degree in Computer Science, Engineering, Mathematics, Statistics, or related STEM field.
Professional certifications such as CFA, FRM, or CPA.
Experience working with JIRA and Agile project management tools.

Soft Skills