Senior Python & SQL Developer

Compunnel, Inc.; New York (NY); On-site; USD 130,000 - 180,000; Full time

Job summary

Compunnel, Inc. in New York is seeking a Senior Python & SQL Developer to design, build, and maintain scalable enterprise applications, APIs, and data integration solutions. You will work with business users, architects, and teams to deliver reliable software and solutions.

The role requires strong Python/SQL expertise, REST API development, ETL processes, and production support. You will mentor junior developers and contribute to Agile ceremonies while ensuring performance and reliability.

Qualifications

• 8+ years of Python application development and SQL programming.
• 5+ years with relational databases such as SQL Server, Oracle, PostgreSQL, or MySQL.
• 3+ years developing REST APIs, data integration, and automation frameworks.
• Strong SQL optimization, database design, indexing, and performance tuning.
• Experience with ETL/data integration and CI/CD pipelines.
• Experience with Python frameworks: Flask, FastAPI, Django; Pandas competency.
• Experience with Git and Agile/Scrum environments.
• Bachelor’s degree in CS/IT/Engineering or equivalent work experience.

Responsibilities

• Design, develop, and maintain scalable applications, APIs, and automation solutions using Python.
• Develop, optimize, and troubleshoot complex SQL queries, procedures, views, and DB objects.
• Build and support ETL/data integration processes for analytics platforms.
• Collaborate with users, architects, and teams to deliver technical solutions.
• Monitor performance and implement performance tuning improvements.
• Perform code reviews, unit testing, debugging, and production support.
• Develop integrations via REST APIs and data services.
• Apply database design/indexing/query optimization techniques.
• Support source control and CI/CD pipelines; mentor juniors.
• Participate in Agile ceremonies and document technical work.
• Troubleshoot application, DB, integration, and production issues.

Skills

Python development

SQL optimization

REST APIs

ETL

CI/CD

Git

Agile/Scrum

Data integration

Problem solving

Education

Bachelor's degree in Computer Science/IT/Engineering

Tools

Flask

FastAPI

Django

Pandas

Job description

Job Summary

The Senior Python & SQL Developer will be responsible for designing, developing, and maintaining scalable applications, APIs, automation solutions, and data integration processes using Python and SQL. The role requires strong expertise in application development, relational databases, REST APIs, ETL processes, database performance optimization, and production support. This position will collaborate with business users, architects, and development teams to deliver reliable enterprise solutions.

Key Responsibilities

• Design, develop, and maintain scalable applications, APIs, and automation solutions using Python.
• Develop, optimize, and troubleshoot complex SQL queries, stored procedures, views, and other database objects.
• Build and support ETL and data integration processes for enterprise applications and analytics platforms.
• Collaborate with business users, architects, and development teams to gather requirements and deliver technical solutions.
• Monitor application and database performance and implement performance-tuning improvements.
• Perform code reviews, unit testing, debugging, and production support activities.
• Develop integrations with internal and external systems using REST APIs and data services.
• Apply database design, indexing, and query optimization techniques to improve application performance.
• Support source control and CI/CD processes using Git and related development tools.
• Mentor junior developers and provide technical guidance as needed.
• Participate in Agile ceremonies and contribute to technical documentation.
• Troubleshoot application, database, integration, and production issues.

Required Qualifications

• 8+ years of experience in Python application development and SQL programming.
• 5+ years of experience with relational databases such as SQL Server, Oracle, PostgreSQL, or MySQL.
• 3+ years of experience developing REST APIs, data integration solutions, and automation frameworks.
• Strong expertise in SQL query optimization, database design, indexing, and performance tuning.
• Experience developing and supporting ETL and data integration processes.
• Experience with Python frameworks and libraries such as Flask, FastAPI, Django, Pandas, or equivalent.
• Experience developing integrations using REST APIs and data services.
• Experience with Git and CI/CD pipelines.
• Experience working within Agile/Scrum development environments.
• Strong analytical, troubleshooting, problem-solving, and communication skills.
• Bachelor's degree in Computer Science, Information Technology, Engineering, or equivalent work experience.

Preferred Qualifications

• Experience with Microsoft Azure, AWS, or Google Cloud Platform.
• Experience with Docker, Kubernetes, or containerized deployments.
• Experience with data warehousing, ETL platforms, or big data technologies.
• Technical leadership or project lead experience.
• Relevant Python, SQL, or cloud certifications.

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