Quality & Product Validation Engineer

Justin Johnson

CONTACT:

******************@*****.***

(310) 697 - 6522

QUALITY ENGINEER / APPLICATION ENGINEER / PRODUCT MANAGER Objective

Budding engineer with experience in quality assurance, failure analysis, root cause investigation, and product validation across solar, battery, inverter, and energy storage systems. Skilled in improving product reliability through testing, corrective actions, and cross-functional collaboration within ISO 9001, UL, and RVIA frameworks. Passionate about efficiency, sustainability, and continuous improvement of our collective society.

Education

B.S. Chemical Engineering – California State University, Pomona (graduated 2021) Experience

RENOGY 2020 - Present

Quality Control Engineer

• Performed incoming inspection, validation testing, and failure analysis on off-grid energy products, including solar modules, lithium batteries, controllers, inverters, monitoring equipment, etc.

• Conducted root cause analysis investigations on warranty returns, customer-reported failures, and product performance concerns.

• Created detailed technical reports documenting testing methods, failure mechanisms, corrective actions, and product performance concerns

• Managed RMA investigations from receipt through final verdict, focusing on accurate documentation and timely resolution

• Performed troubleshooting, product rework, and repair validation to improve product recovery.

• Executed functionality, electrical, and performance testing to verify compliance with engineering specs and quality requirements, aligned with ISO 9001 principles, UL safety requirements, and RVIA standards.

• Collaborated with engineering, operations, and product teams to implement corrective actions, and initiated inventory audits to ensure maintenance of product quality standards.

• Authored a standardized set of SOPs to evaluate each product type (solar, battery, etc) Application Engineer / Product Manager

• Managed Renogy’s complete solar portfolio consisting of 40+ solar panels, supporting product quality, reliability improvements, and customer satisfaction initiatives.

• Served as the sole owner of Renogy’s Special Project Division, designing and managing custom energy system projects from requirement gathering through design, deployment, and troubleshooting/support in post.

• Provided advanced technical support for customers and internal teams, serving as a “product expert.”

• Designed and launched numerous products, including five comprehensive “Dealer Solutions,” integrating all components of a mobile off-grid system into one complete package.

• Contributed to RVIA-certified Level 3 training materials and conducted Level 3 RVIA technical training sessions.

• Helped develop Renogy’s Dealer Empowerment Program, and delivered technical training focused on educating our clients on the core functions of solar, energy-storage, and off-grid power systems.

• Oversaw RMA operations and quality investigations, partnering with quality team to evaluate product failures, identify root causes, and drive corrective actions in a timely and efficient manner. Major Skills

Product Management • Application Engineering • Technical Product Support • Customer Escalation Management • Requirements Gathering • Cross-Functional Leadership • Quality Assurance • Quality Control • Root Cause Analysis (RCA) • Failure Analysis • CAPA • Product Validation & Verification • RMA Management • Nonconformance Management • Reliability Testing • Incoming Inspection • Process Improvement • Technical Documentation & Report Writing • Stakeholder Communication • Dealer & Customer Training • Product Lifecycle Support

Technical Expertise

Solar PV Systems • Lithium-Ion Battery Systems • Battery Management Systems (BMS) • Inverter Systems • Charge Controllers (MPPT) • Energy Storage Systems (ESS) • Off-Grid System Design • Electrical Testing & Diagnostics • Product Reliability Engineering • Failure Mode & Effects Analysis

(FMEA) • Electrical & Functional Testing • System Integration • Renewable Energy Hardware Validation • Warranty Analysis & Field Failure Investigation

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