Senior Software Engineer; Python

The New York Independent System Operator (NYISO) manages the efficient flow of electricity on more than 11,000 circuit‑miles of high‑voltage transmission lines, dispatching power from hundreds of generating units across the state.

The New York Independent System Operator (NYISO) applies cutting‑edge technology to operate a reliable electricity system, manage competitive markets for wholesale electricity, and plan for the Empire State's energy future. The NYISO’s Information Technology department invites applications for a full‑time Senior Software Engineer with a focus in Python to join our team.

We are seeking a Senior Software Engineer with advanced Python development skills and a strong background in API integration. The ideal candidate will have working knowledge of power systems modeling, simulation, and analysis, and will play a key role in supporting and enhancing Python‑based applications used across engineering workflows. This role requires daily use of AI‑augmented programming practices and includes mentoring staff in adopting these tools to improve productivity and innovation.

The Senior Software Engineer performs full stack development, including front end, back end, and database work where appropriate. The position includes the development of automated unit tests in support of new functionality and software changes. The position participates in all phases of the Software Development Lifecycle, assists in the research of new technologies, and collaborates with Project Managers and Business Partners.

This individual will participate in a 24×7×365 on‑call support rotation for production applications.

• Design, develop, and support maintenance of Python‑based tools for power system simulation, data processing, and visualization.
• Lead the integration of Python APIs from commercial and custom power system analysis tools into internal workflows.
• Develop automated testing, deployment, and monitoring solutions for Python tools.
• Collaborate with appropriate teams to implement and optimize Dev Ops pipelines to ensure secure and efficient software delivery of python tools.
• Use AI‑augmented programming tools (e.g., code generation assistants, intelligent IDEs) as part of daily development work.
• Mentor staff in adopting AI‑augmented programming practices for Python.
• Collaborate with cross‑functional teams, including developers, system administrators, business owners and project managers to gather requirements and provide technical expertise.
• Support and enhance existing applications by working with vendors to improve their products in the areas of required business functionality and security.
• Ensure compliance with cybersecurity standards and best practices.
• Document code, processes, and system architecture clearly and effectively.
• Apply technical knowledge and experience in order to solve architecture and design problems.
• Drive discussion with Business Analysts and Business Partners to interpret high‑level business requirements into detailed application requirements.
• Create software design specifications for functionality as defined in approved requirement specifications. Ensure that designs are consistent with applicable NYISO software development standards, product's architectural blueprints and industry guidelines.
• Evaluate new technology and tools. Incorporate approved technology and tools to enhance the product development process.
• Present technology design and related issues to technical and non‑technical audiences.
• Document product architecture plans.
• Design and develop technical testing methods to meet target scalability and performance objectives. Perform any needed tuning of applications that do not meet those requirements.
• Lead projects with assistance from Manager and have high visibility with other staff.
• Mentor and coach Associate Engineers and Engineers.
• Serve as subject matter expert across the organization for the application(s) supported.
• Provide software subject matter expertise and support for all phases of the NYISO software development lifecycle; including requirements, design, development, testing, deployment and post‑production support.
• Interact with…