Principal Consultant – Python Full Stack Developer (Energy / Oil & Gas – Midstream / ETRM) - W2 Only

Location: Chicago, IL 60604

Duration: 12 Months

Experience: 10+ Years

Work Model: To be confirmed

Certifications: Not Required

We are looking for an experienced Principal Consultant – Python Full Stack Developer with strong expertise in Python backend development, AWS services, SQL, and React frontend development. The ideal candidate should have hands-on experience building scalable applications using microservices architecture, AWS Lambda, PostgreSQL, and modern API technologies.

Experience in the Energy, Oil & Gas, Midstream, or Energy Trading and Risk Management (ETRM) domain is beneficial.

• Advanced Python programming and object-oriented programming (OOP).
• AWS services, particularly AWS Lambda.
• SQL and PostgreSQL.
• Microservices architecture and application development.
• Python backend development.
• React frontend development.
• ORM tools, preferably SQLAlchemy.
• GraphQL API development and integration.
• Design patterns and scalable application design.
• Git, branching strategies, and version control.
• Agile/Scrum development methodology.

• Design, develop, and maintain scalable backend applications using Python and AWS.
• Build and manage serverless applications using AWS Lambda and microservices architecture.
• Develop and optimize database queries, data models, and PostgreSQL integrations.
• Implement and integrate GraphQL APIs and ORM-based database operations.
• Develop and maintain responsive frontend applications using React.
• Apply object-oriented programming principles and established design patterns to deliver maintainable code.
• Collaborate with cross-functional teams in an Agile/Scrum environment.
• Participate in code reviews, testing, debugging, and continuous improvement.
• Follow Git workflows and branching strategies to support collaborative development.

1. Python Backend Development: Build robust backend services, APIs, and microservices using Python, AWS Lambda, and PostgreSQL.
2. React Frontend Development: Develop and maintain frontend components and integrate them with backend services.
3. Application Architecture & Integration: Implement scalable application designs, GraphQL APIs, database integrations, and enterprise-grade development practices.

• Experience in the Energy, Oil & Gas, Midstream, or ETRM/Energy Commodities domain.
• Experience developing enterprise-scale applications.
• Strong problem-solving, analytical, and communication skills.
• Ability to work independently and collaborate effectively with distributed teams.