Interested in joining a growing company where you will work with talented colleagues, enhance a supportive and energetic culture, and be part of the climate solution? At Energy Solutions, we focus on the big impacts. And we believe that market-based programs can be a powerful force to deliver large-scale energy, carbon, and water-use savings. Since 1995, we've harnessed that power to offer proven, performance-based solutions for our utility, government, and institutional customers.The Information Systems (IS) team is seeking aSenior Software Engineer to provide technical direction and establish complex software solutions that support critical business applications and long-term technology objectives. As a senior individual contributor, this role leads software architecture, technical design, and engineering decisions that other teams and projects utilizing the Mendix platform rely on. Solutions must be scalable, maintainable, secure, and aligned with business and client needs.Operating with a high degree of independence, the Senior Software Engineer evaluates technical requirements, sets direction on solution alternatives, and contributes to technical strategy within their domain. In addition, this role will mentor junior level engineers, through code reviews, technical guidance, solution design discussions, and knowledge sharing, while supporting engineering best practices, technical standards, and continuous improvement initiatives across the development team.Responsibilities include but are not limited to:Software Development & Architecture: * Lead the design and development of complex software systems, features, services, and integrations across all projects and multiple teams utilizing the Mendix platform. * Design scalable, secure, modular, and maintainable software solutions that support current and anticipated business and client needs. * Develop full-stack software solutions and technical designs that align with platform architecture, engineering standards, and business requirements. * Establish architecture and technical design standards adopted across multiple applications, systems, projects, and shared technology platforms.Technical Leadership & Capability Development * Serve as a technical subject matter expert and escalation point for complex software engineering questions and decisions across multiple teams utilizing the Mendix platform. * Review code changes by other engineers regularly to ensure alignment with engineering, architecture, security, testing, documentation, and quality standards. * Mentor and coach engineers across multiple teams and Mendix projects through technical guidance, solution design discussions, pair programming, code reviews, and constructive feedback. * Lead technical strategy within their domain and establish engineering standards, technical approaches, system design decisions adopted across multiple projects and shared technology platforms.Project Support & Cross-Functional Collaboration * Lead cross-functional initiatives spanning multiple teams involving system integration, APIs, data exchange, platform modernization, and performance optimization. * Partner with business stakeholders to understand operational objectives, translate business requirements into scalable, maintainable software solutions. * Lead the Identification and communication of technical risks, dependencies, trade-offs, and mitigation strategies to project teams, engineering leads, and senior leadership as needed.Agile Development & Delivery * Lead technical discussions during sprint planning, backlog refinement, architecture reviews, and retrospectives across teams. * Recommend and implement improvements to engineering processes, workflows, tools, and delivery practices adopted across teams.Operational Excellence & Deployment Support * Lead incident response, root-cause analysis, and implementation of sustainable corrective actions across teams. * Eval