Senior Python Developer

The ideal candidate will have a strong background in Python development, PostgreSQL, Flask or FastAPI, and data transformation using modern data-processing frameworks. Demonstrates strong data integrity skills and proficiency in SQL, with a proven track record of leading data-focused projects.

Our client, a Real Estate and Financial Services company, is looking for a Senior Python Developer for their McLean, VA location.
 
Responsibilities:

• Design, build, and maintain scalable Python applications for data processing and analytics.
• Develop RESTful APIs using Flask or FastAPI.
• Implement and optimize complex SQL queries and database structures in PostgreSQL.
• Architect and maintain ETL pipelines using Informatica, ensuring data quality and integrity.
• Work with large datasets, ensuring efficient data ingestion, transformation, and storage.
• Develop and optimize data transformation workflows using PySpark.
• Collaborate with cross-functional teams to define technical requirements and deliver solutions.
• Troubleshoot and resolve issues in production environments.
• Mentor junior developers and contribute to best practices.

 
Requirements:

• 5+ years of engineering experience with at least 2 years of recent Python experience, specializing in heavy data applications.
• Demonstrates strong data  integrity skills and proficiency in SQL, with a proven track record of leading data-focused  projects.
• We are seeking an experienced Senior Python Developer to join our team.
• The ideal candidate  will have a strong background in Python development, PostgreSQL, Flask or FastAPI, and data  transformation using modern data-processing frameworks.
• You will be responsible for designing,  developing, and maintaining data-intensive applications and ETL pipelines.
• Experience with  Informatica and scalable data transformation approaches is preferred.
• Bachelor’s degree in Computer Science, Engineering, or related field (or equivalent experience).
• 5+ years of professional experience as a Python developer.
• 3+ years of experience with PostgreSQL, including database design and performance tuning.
• 3+ years of experience developing APIs with Flask or FastAPI.
• Proven experience working with large datasets and data-intensive applications.
• Experience integrating AI or machine learning models into data pipelines or applications.
• Familiarity with Python-based machine learning libraries such as scikit-learn, TensorFlow, or  PyTorch.
• 2+ years of experience with data transformation using PySpark, Dask, Polars, etc.
• Strong understanding of data modeling, data warehousing, and data integration concepts.
• Experience with version control systems (e.g., Git).
• Excellent problem-solving skills and attention to detail.
• Strong communication and teamwork abilities.
• Hands-on experience with Informatica and ETL processes.
• Experience with cloud platforms.
• Familiarity with containerization (Docker, Kubernetes).
• Knowledge of data visualization tools and techniques.

 
Why Should You Apply?

• Health Benefits
• Referral Program
• Excellent growth and advancement opportunities