Python Developer

• Strong Python (Data side) • Pandas, NumPy, SQLAlchemy • Data Engineering and ETL processes Location: Santa Ana, CA (Onsite – 5 days per week) Client interview: Yes - virtual Overview We are seeking a skilled Python Developer to support the migration of existing applications and scripts from an external vendor’s environment into our internal platform. The ideal candidate will have strong Python development experience, a solid understanding of software architecture, and the ability to refactor, enhance, and optimize code for long-term maintainability. Responsibilities • Analyze existing vendor-provided Python codebases and related assets. • Migrate, refactor, and integrate code into the internal platform while ensuring compatibility and performance. • Enhance and extend existing code functionality based on evolving business user requirements. • Re-architect components as needed to align with internal coding standards, best practices, and infrastructure. • Develop automated tests to validate migrated and enhanced code functionality. • Collaborate with platform engineers, business analysts, and stakeholders to capture requirements and deliver solutions. • Document migration processes, enhancements, system changes, and updated workflows. • Troubleshoot, debug, and resolve issues during migration, enhancement, and post-deployment. • Identify opportunities for automation, performance improvements, and process efficiency. Qualifications • Strong proficiency in Python (3.x) and related frameworks/libraries. • Strong proficiency in pandas, nympy, sqlalchemy, tenacity, polars, dask, pyspark, etc. • Strong knowledge of data engineering, ETL processes, or microservices. • Strong knowledge of APIs, databases (SQL/NoSQL), and data pipelines. • Experience with code migration, integration, or re-platforming projects. • Proven ability to enhance and extend existing code to meet business requirements. • Familiarity with software design patterns, modularization, and refactoring best practices. • Experience with version control (Git), CI/CD pipelines, and testing frameworks (pytest/unittest). • Strong debugging, problem-solving, and analytical skills. • Excellent communication and documentation abilities. Preferred Skills • Experience with cloud platforms (AWS, Azure, or GCP). • Familiarity with containerization (Docker, Kubernetes). • Prior experience collaborating with external vendors or in a migration/enhancement-focused role.