Senior Software Engineer (Simulation & Optimization)

Location: Remote within the United States

Salary: $140,000–$227,200 annually, depending on U.S. location tier, plus equity and bonus opportunities.

Company

hirify.global develops software that helps solar professionals sell, design, and install residential and commercial solar arrays.

What you will do

• Design, build, and maintain backend systems and computation engines for solar and electrical design workflows.
• Advance simulation and optimization for photovoltaic and battery storage layouts, component selection, and electrical configuration.
• Translate physical models and engineering constraints into reliable, scalable software with product managers, designers, research engineers, and QA.
• Shape simulation and computation infrastructure for correctness, performance, and maintainability.
• Write tested code, contribute to technical discussions and design documents, and mentor teammates.
• Own services end to end, including participation in the on-call rotation.

Requirements

• 5+ years of professional software engineering experience with a strong backend foundation.
• Academic background or equivalent expertise in computational mathematics, optimization, linear algebra, control theory, or numerical algorithms.
• Hands-on experience with simulation or optimization.
• Experience designing APIs, microservices, or data pipelines at scale.
• Strong algorithmic reasoning about performance, correctness, and edge cases in computational systems.
• Proficiency in one or more backend languages; the current stack includes C++, Python, and Ruby.

Nice to have

• Advanced degree in computer science, applied mathematics, electrical engineering, physics, or a related field.
• Knowledge of solar PV, battery technology, or electrical engineering concepts.
• Experience with cloud-native compute infrastructure and batch or distributed processing systems.
• Interest in renewable energy and experience working effectively as requirements and priorities change.

Culture & Benefits

• Remote work with teams currently located in the United States, Canada, Poland, and Germany.
• Flexible paid time off and parental leave.
• Work-from-home, coworking, connectivity, and learning and development stipends.
• Energize Fridays.
• Medical, dental, and vision coverage.