Application Engineer

This position will be onsite at our warehouse in Allen, Texas (Dallas-Fort Worth area).

Full-time W-2 ONSITE opportunity (not remote)!

• Candidates must be legally authorized to work in the United States without requiring employer-sponsored visa sponsorship now or in the future.
• Candidates must have permanent work authorization in the United States. Sol-Ark does not provide visa sponsorship, including but not limited to F-1 CPT, F-1 OPT (including STEM OPT), H-1B, or any other employment-based visa requiring future sponsorship.

We are seeking a motivated, hands-on Application Engineer I to join our engineering team. This early-career role is well suited for a recent graduate or an engineer with up to three years of relevant experience who is eager to build broad technical experience across hardware, firmware, product development, quality assurance, technical documentation, and customer support.

The Application Engineer I will help test, troubleshoot, document, and improve Sol-Ark products and systems throughout the product lifecycle. The successful candidate will work closely with firmware, hardware, quality, manufacturing, and customer-facing teams to support new product development, product validation, and technical issue resolution. This role requires strong curiosity, sound engineering judgment, attention to detail, strong communication skills, and a willingness to take on a range of technical tasks.

• Assist with lab testing, functional testing, and validation of inverter hardware, assemblies, and systems.
• Set up equipment, execute test plans, collect data, and document results clearly and accurately.
• Support troubleshooting and root-cause investigation of hardware issues found during quality testing or field use.
• Assist with reliability, performance, and regression testing as applicable.

• Support verification and validation of inverter firmware and related battery interfaces.
• Execute inverter firmware test cases, document defects, reproduce reported issues, and assist engineering teams with issue isolation.
• Participate in regression testing following firmware releases, design changes, and corrective actions.
• Assist with basic automation, scripting, data analysis, or test-tool development as skills and project needs allow.

• Work with cross-functional engineering teams to support new product development
• Assist in product characterization and executing prototype field test plans.
• Help evaluate product performance against specifications, requirements, and customer or application needs.
• Participate in design reviews, test reviews, and technical discussions; communicate observations and risks
• Support the transition of product knowledge, test methods, and documentation from development into material for different company stakeholders.

• Support quality assurance activities by helping investigate product defects, test failures, and customer-reported issues.
• Participate in root-cause analysis and corrective-action activities under the guidance of senior engineers or quality personnel.
• Help identify opportunities to improve product reliability, test coverage, and documentation quality.

• Create, update, and maintain technical documentation, including test plans, test reports, troubleshooting guides, application notes, and product-support materials.
• Record test configurations, measurements, observations, failures, and results in a clear, organized, and traceable manner.

• Assist with technical customer escalations by gathering information, reproducing issues when possible, documenting findings, and coordinating with internal engineering teams.
• Provide clear technical communication to internal stakeholders and, when appropriate, customers, technical support, or field personnel.
• Help develop troubleshooting guidance and product application materials that improve the customer experience.
• Escalate safety, reliability, quality, and customer-impact concerns promptly to the appropriate engineering or management team.

• Collaborate effectively with software, firmware engineering, manufacturing, quality, product management, and customer support teams.
• Manage assigned tasks and priorities, communicate progress and blockers, and seek guidance when needed.
• Build technical knowledge…