The Stockholm Environment Institute (SEI) seeks an outstanding software developer/scientist to contribute to the continued development of WEAP (Water Evaluation and Adaptation Planning), one of the world's leading platforms for integrated water resources planning and decision support. WEAP is used by governments, utilities, researchers, NGOs, and international organizations worldwide — including the California Department of Water Resources — to address drought resilience, climate adaptation, groundwater management, infrastructure planning, agricultural water use, and ecosystem sustainability.
The position combines advanced software engineering with scientific inquiry and close collaboration with researchers, modelers, and practitioners. The successful candidate will work closely with WEAP's lead developer and senior WEAP modelers and, operating with significant autonomy, translate scientific and policy needs into robust software for a global user community. They will help advance the integration of AI capabilities within WEAP, including AI-assisted workflows that support users in building, debugging, documenting, and analyzing models.
The SEI-US Center has three offices: Somerville, MA, Davis, CA, and Seattle, WA; you will be joining our twelve-person team based primarily in Davis, CA. The job location is in Davis, California.
Key Responsibilities
Co-Lead the full development lifecycle of the WEAP software platform, architecture, design, implementation, testing, documentation, and release, including modeling tools, user interfaces, APIs, data processing workflows, and analytical functions.
Develop and evaluate AI-assisted functionality that helps users construct, troubleshoot, document, interpret, and analyze WEAP models.
Collaborate with researchers and modelers to translate scientific and policy needs into robust software solutions, including for cutting-edge water planning applications in California and other water-stressed regions.
Guide and/or support integration of hydrologic, climate, economic, geospatial, and environmental datasets into modeling workflows, including approaches that help users in data-scarce environments.
Support, cultivate and grow the international WEAP user community through technical engagement and collaborative problem solving.
Lead t he security, integrity, and responsible stewardship of WEAP software and digital assets, including applying secure software-development practices, identifying and addressing vulnerabilities, managing access and dependencies, and conducting appropriate due diligence when adopting new technologies, libraries, AI tools, or third-party services.
Communicate technical concepts clearly to technical and non-technical audiences.
Maintain and evolve the WEAP website and online user resources, including supporting the platform’s transition to cloud-based services.
Requirements
Required Skills and Abilities:
Excellent software engineering and programming skills, including experience developing and maintaining substantial, long-lived codebases.
End-to-end desktop application development from architecture and UI design through implementation, testing, documentation, and release, with demonstrated use of good design principles.
Ability, wisdom and interest in applying AI-assisted development tools and workflows, both in the development process and in scientific software features.
Excellent analytical and problem-solving skills; creativity in reaching results in new ways.
Ability to anticipate and address risks related to software architecture, data handling, access controls, third-party dependencies, licensing, and the appropriate protection and distribution of source code and other digital assets.
Excellent verbal and written communication skills, with the ability to work effectively with both technical experts and non-technical stakeholders.
Strong organizational and time management skills; proven ability to manage multiple priorities and meet deadlines. Ability to work…