Consulting Services is seeking a Software Engineer to advance our long-term power system planning software with a focus on capacity expansion In this role you will contribute towards development of advanced capabilities inform multi-decade investment decisions for generation transmission storage under evolving reliability economic and decarbonization requirements You will collaborate closely with our power system experts and software engineers to translate complex planning methodologies into scalable reliable and transparent software Key Responsibilities Design implement and maintain software modules for capacity expansion planning including generation storage and transmission investment decisions Translate planning concepts such as resource adequacy reserve margins ELCC policy constraints and emissions targets into robust computational models Support multi-region and inter-regional planning with long-term temporal and spatial resolution Implement and improve large-scale optimization models develop approaches for scenario analysis sensitivity analysis and long-horizon uncertainty Build maintainable well-tested and well-documented code for production-grade planning tools Design modular architectures that allow current technologies policies and constraints to be added over time Improve runtime performance and memory efficiency for large datasets and long planning horizons Integrate capacity expansion results with downstream models Ensure data traceability and reproducibility of planning results Collaborate with domain experts to validate model behavior and assumptions Clearly communicate technical concepts and modeling results to both technical and non-technical stakeholders Contribute to documentation and user-facing explanations of model logic and limitations Required Qualifications 3 to 5 years of experience with bachelor s or Master s degree in Computer Science Engineering Applied Mathematics Operations Research or a related field Strong programming skills in Python Preferred Java C or similar Familiarity with software engineering best practices version control testing code reviews Experience developing optimization-based models or large-scale analytical software Ability to work with large datasets and complex model inputs Preferred Qualifications Experience with power system planning energy markets or grid modeling Familiarity with capacity expansion models resource adequacy or long-term planning frameworks Knowledge of renewable energy storage transmission planning or decarbonization policy Additional Information Relocation Assistance Provided Yes