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Overview

At PNNL, our core capabilities are divided among major departments that we refer to as Directorates within the Lab, focused on a specific area of scientific research or other function, with its own leadership team and dedicated budget.

Our Science & Technology directorates include National Security, Earth and Biological Sciences, Physical and Computational Sciences, and Energy and Environment. In addition, we have an Environmental Molecular Sciences Laboratory, a Department of Energy, Office of Science user facility housed on the PNNL campus.

The Energy and Environment Directorate delivers science and technology solutions for the nation's biggest energy and environmental challenges. Our more than 1,700 staff support the Department of Energy (DOE), delivering on key DOE mission areas including: modernizing our nation's power grid to maintain a reliable, affordable, secure, and resilient electricity delivery infrastructure; research, development, validation, and effective utilization of renewable energy and efficiency technologies that improve the affordability, reliability, resiliency, and security of the American energy system; and resolving complex issues in nuclear science, energy, and environmental management.

The Electricity Infrastructure and Buildings Division, part of the Energy and Environment Directorate, is accelerating the transition to an efficient, resilient, and secure energy system through basic and applied research. We leverage a strong technical foundation in power and energy systems and advanced data analytics to drive innovation, transform markets, and shape energy policy

Responsibilities

This position is in the Building Simulation and Design Group (BS&DG) within PNNL's Electricity Infrastructure and Buildings Division. BS&DG conducts modeling and analysis to evaluate the impacts of building energy policies, codes, and standards; develops tools and workflows to support building research and decision making; and helps accelerate adoption of energy-efficient technologies. The group maintains core research capabilities in building energy simulation, building energy policy analysis, and tool development for building applications.

The BS&DG is seeking a Software Engineer II - Building Applications with strong knowledge of software engineering and web application development to contribute to building technology applications. The selected candidate will serve as an individual contributor to project teams, developing technical approaches and developing, improving, and maintaining software systems that support building energy efficiency. Responsibilities include contributing to software releases, publications, and presentations, and communicating technical progress, results, and limitations to project teams and collaborators.

The successful candidate will be responsible for:

+ Performing assigned roles under the direction of Project and/or Task Managers, following applicable project and field procedures, and completing assigned tasks on time and within budget.

+ Applying established software development practices, including version control, code review, testing, and documentation, within an Agile development environment.

+ Working with staff across the group and division to translate domain needs into software requirements and develop, improve, and maintain applications, software components, and reusable libraries.

+ Independently completing recurring assignments and defining and leading small tasks or projects, coordinating with contributors, and delivering technically sound results within assigned scope, schedule, and budget.

+ Working with project teams and collaborators to understand research needs, contribute to technical approaches, and communicate progress, findings, and limitations.

+ Contributing to software releases, technical reports, journal articles, and conference presentations, leading elements or sections of technical products, and presenting findings in project meetings and technical forums.

+ Contributing research ideas and technical content to proposals for research and capability development opportunities.

+ Collaborating across the group and division to share methods, strengthen research capabilities, and identify opportunities for related research.

+ Maintaining accountability to Project and/or Task Managers, the Group Leader, and the Team Leader for assigned responsibilities, project execution, professional development, and operational discipline, including compliance with applicable procedures, training requirements, and quality, safety, and security expectations.

Applicants are strongly encouraged to submit a full academic or research CV.

This position will be based at a PNNL office in Portland, OR, Richland, WA, or Seattle, WA, with an on-site presence expected. Hybrid work arrangements may be available in accordance with laboratory policy, project needs, and team expectations. Remote work may be considered for candidates with strong technical expertise and demonstrated success working remotely.

Qualifications

Minimum Qualifications:

+ BS/BA in computer science, software engineering, computer engineering, or a related technical field, and 2 years of relevant software development experience -OR-

+ MS/MA -OR-PhD in computer science, software engineering, computer engineering, or a related technical field

+ Proficiency in one or more programming languages (such as JavaScript/TypeScript, Python, or PHP)

Relevant experience includes degree in computer science, software engineering, computer engineering, or a closely related field, with relevant software development experience and evidence of growing independence in technical work and project contributions. Proficiency in one or more programming languages.

Preferred Qualifications:

+ Graduate degree in computer science, software engineering, computer engineering, or a closely related field, with relevant software development experience and evidence of growing independence in technical work and project contributions.

+ Significant experience with full-stack software development, web application development, and database engineering.

+ Experience with one or more web application technologies such as Node.js, React, Ruby on Rails, Django, or FastAPI, with the ability to learn additional languages and frameworks as project needs evolve.

+ Experience developing or integrating APIs and working with structured data, including data exchange and validation.

+ Working knowledge of relational databases and object-relational mapping (ORM) tools.

+ Experience using Git, code review, software testing, and documentation to support collaborative software development and reliable releases.

+ Experience working in an Agile development environment and using issue-tracking tools such as Jira.

+ Experience developing, testing, and evaluating AI-enabled software applications using large language models, with capabilities such as model API integration, external tool use, or agentic workflows.

+ Familiarity with retrieval-augmented generation (RAG) or related approaches for incorporating domain documents and structured data int...

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Software Engineer II - Building Applications

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