Solar Performance Specialist

Nextpower Inc; Sorocaba; Hybrid; BRL 120,000 - 180,000; Full time

Job summary

Nextpower Inc. in São Paulo / Sorocaba is seeking a Solar Performance Specialist to drive customer success by evaluating TrueCapture gains and coordinating field data analyses. You will ensure accuracy, present results to clients, and manage reporting timelines to maintain transparency.

You will advance analysis methods, clean data, and build automation to scale gain calculations. Collaboration with the technical services team will optimize tracker performance and reliability across

Qualifications

• Bachelor’s degree in Mathematics, Accounting, Engineering, Statistics, or related disciplines.
• Minimum 2 years in performance engineering, data science, or analytics.
• Minimum 1 year in solar domain with performance modeling or data analysis.

Responsibilities

• Analyze TrueCapture gains vs quoted and modeled gains; resolve disparities.
• Communicate results to customers and manage reporting schedules.
• Refine analysis methods and automate gain calculations.
• Monitor site performance and support diagnostics with the tech services team.

Skills

Analytical skills

Data science

Performance engineering

Data analysis

Customer-facing communication

Time series data

English proficiency

Education

Bachelor’s degree (Mathematics, Accounting, Engineering, Statistics)

Master’s degree (preferred)

Tools

PVsyst

PVLIB Python

NREL SAM

Excel / Web APIs

Job description

Solar Performance Specialist### Solar Performance SpecialistApply: Hybrid: Sorocaba, Sao Paulo - BRA: Sao Paulo, Sao Paulo - BRA: Full time: Posted Today: End Date: December 7, 2026 (30+ days left to apply): NX-4506**Job Description:**As a valued team member, you'll play a pivotal role in driving customer success through the execution and management of TrueCapture Benefit Evaluation activities. Your responsibilities will include:**Ensuring Accuracy and Customer Satisfaction:** You'll meticulously analyze and compare TrueCapture field measured gains against quoted and modeled gains. Any disparities will be thoroughly investigated and resolved, ensuring that our customers receive accurate and reliable information. Engaging directly with customers, you'll effectively communicate processes, present results, and address any concerns, managing schedules and reporting requirements to maintain transparency and satisfaction.**Enhancing Operational Efficiency:** Your role involves continually refining analysis methods, data cleaning techniques, and automation processes to scale-up the calculation of TrueCapture measured gains. By monitoring site performance during field tests, you'll guarantee the collection of high-quality data for analysis, contributing significantly to project efficiency and success.**Empowering Insights and Diagnosing Issues**: Supporting active monitoring, you'll analyze solar resource, production, and operational data, translating these insights into actionable reports and summaries. Your expertise will aid in diagnosing operational issues through comprehensive data analysis, and collaborating closely with our technical services team to ensure optimal tracker performance and reliability.**Qualifications (Required):*** Bachelor’s Degree in Mathematics, Accounting, Engineering, Statistics, or related disciplines.* Minimum of 2 years' experience in performance engineering, data science, or analytics.* Minimum of 1 year of experience in the solar domain, preferably involving performance modeling and/or data analysis of utility-scale solar power plants.* Experience with operational aspects of utility-scale solar power plants relating to operations and maintenance, performance reporting, performance metrics, and data analysis of operational time series data* Previous customer-facing experience and exceptional communication skills to engage effectively with clients, present findings, manage expectations, and resolve queries.* Proven ability to manage multiple projects concurrently while staying organized and maintaining high-quality work standards.* Strong analytical skills with an exceptional attention to detail and accuracy.* Understanding of solar power plant equipment and performance modeling and analysis, including solar resource, sun position, irradiance, transposition models, module technologies, inverter behaviors, etc.* Advanced or fluent English (spoken and written); Spanish is a plus.**Additional Qualifications (Preferred):*** Master’s degree in a relevant field.* Familiarity with performance engineering tools like PVsyst, PVLIB Python, NREL SAM, and other PV software and models.* Experience working with time series datasets and typical pitfalls associated with solar time series data, such as daylight savings time shift correction, alignment of multiple time series, etc.* Experience using web APIs and Excel.* Proficiency in statistics and experience using statistical packages for dataset analysis.* Ability to identify, analyze, and interpret trends or patterns in complex datasets.* Technical expertise in data models, data mining, and segmentation techniques.Location: São Paulo / Sorocaba / HybridAt Nextpower, we are driving the global energy transition with an integrated clean energy technology platform that combines intelligent structural, electrical, and digital solutions for utility-scale power plants. Our comprehensive portfolio enables faster project delivery, higher performance, and greater reliability, helping our customers capture the full value of solar power. Our talented worldwide teams are redefining how solar power plants are designed, built, and operated every day with smart technology, data-driven insights, and advanced automation. Together, we’re building the foundation for the world’s next generation of clean energy infrastructure.