Software Developer (Scientist 2

What You Will Do

The Nuclear Systems Group (NEN-5) conducts multi-disciplinary systems engineering and analysis across various projects impacting advanced nuclear reactor designs, nuclear nonproliferation, stockpile stewardship, and international treaty monitoring. NEN-5 collaborates across LANL's Global Security Directorate, other national laboratories, and industry to meet emerging global nuclear energy needs and safe operations.

What You Will Do

The Nuclear Systems Group (NEN-5) conducts multi-disciplinary systems engineering and analysis across various projects impacting advanced nuclear reactor designs, nuclear nonproliferation, stockpile stewardship, and international treaty monitoring. NEN-5 collaborates across LANL's Global Security Directorate, other national laboratories, and industry to meet emerging global nuclear energy needs and safe operations.

The Applied Science and Engineering for Nuclear Technologies (ASENT) team in the Nuclear Systems Group (NEN-5) at Los Alamos National Laboratory is seeking a talented Software Developer (Scientist
2) to support our critical mission in nuclear safeguards, nonproliferation, and nuclear security applications.

ASENT develops software used for national security and institutional purposes, as well as for international safeguards and nuclear nonproliferation applications. We're looking for a versatile full-stack developer who thrives in both creating new solutions and modernizing legacy systems.

As a Scientist 2, you will:

• Develop new software for a wide-ranging customer base both internal and external to the laboratory
• Maintain and modify existing software based on customer needs
• Write, test, and deploy applications using modern development methodologies
• Collaborate with cross-functional teams to define work scope and software requirements
• Work independently or within SCRUM teams to ensure continuous product improvement
• Write proposals for new and continuing work
• Promote a collaborative, respectful, and engaging team culture
• Embody a "growth mindset" by welcoming feedback and supporting endeavors outside your primary expertise
• Identify strategic partners who could benefit from NEN-5's multi-disciplinary expertise
• Undertake periodic domestic and/or international travel based on programmatic needs

• Significant knowledge/understanding of software engineering principles, design patterns, and appropriate standards
• Experience with modern software development methodologies such as Agile, Dev Ops, and SCRUM and the appropriate tools and processes
• Knowledge/experience with a minimum of three of the following:
• C# and ASP.NET, C++, JAVA, JavaScript and Python languages
• JSON, YAML or Message Pack serialization languages
• ASP.NET Core, Blazor, Node.js, React, FAST Frameworks
• MCV, MVP, Microservices, and Event Driven Architecture
• Knowledge/experience with database design, security strategies, and component integration
• Knowledge of developing and maintaining software within a complex, high-security environment
• Ability to navigate strict compliance requirements, controlled networks, and rigorous access protocols
• Ability to understand, maintain, and modernize legacy systems (Fortran, C, older Python, etc.) working with established scientific codebases that span decades
• Knowledge/understanding of hardware and operating systems including:
• System architecture
• Network infrastructure
• Client-server principles
• Knowledge/understanding of hardware and software integration and testing

• Ability to collaborate and interact effectively with a wide range of personnel
• Demonstrated oral and written communication skills
• Ability to organize, prioritize, and follow through to completion on multiple tasks
• Record of commitment to safety, security, compliance, quality, and foster a respectful and fair work culture.

• Ability to obtain a DOE Q-level clearance, which typically requires U.S. Citizenship