Sr. Software System Integration and Validation

Qcells North America; Santa Clara (CA); On-site; USD 130,000 - 170,000; Full time

Job summary

Qcells North America seeks a Sr. Software Integration and Validation Engineer to ensure seamless integration across hardware, firmware, cloud and applications for solar and storage solutions.

You will design and execute comprehensive test strategies for commissioning, homeowner, fleet, and API layers, validating quality, reliability and usability prior to releases. Strong collaboration with product, hardware and software teams is required in a fast-paced environment.

Qualifications

• B.S. in Engineering (Electrical, CS) required; MS preferred.
• 5–10 years of experience in solar modules, inverters, energy storage, and HW/SW systems.
• Experience with manual testing, test case design, boundary value analysis, and exploratory testing.
• Hands-on REST API testing using Postman or Insomnia.
• Ability to read software requirements and acceptance criteria.
• Proficiency with Jira, TestRail or Zephyr for defect tracking and test management.
• Cross-functional collaboration with hardware, software, and field teams.
• Experience with UI testing and API integration across apps.
• Python or other programming language proficiency.
• Ability to work in a fast-paced, multi-national environment.

Responsibilities

• Collaborate with product management and development to ensure system-level requirements.
• Lead voice of customer for UI/UX and ensure best-in-class delivery.
• Own system software level testing for alpha validation including multiple apps and APIs.
• Design, document, and execute manual test cases for commissioning, homeowner, fleet, and reporting modules.
• Conduct usability testing to evaluate workflows and user experience.
• Perform exploratory testing to find edge cases beyond scripted tests.
• Maintain and update test case libraries with product changes.
• Test REST APIs for correctness and contract compliance.
• Develop and execute API test suites using Postman, Insomnia or similar.
• Validate data integrity between front-end and back-end services.
• Collaborate with backend engineers to understand service contracts and design tests.
• Document test outcomes, defects, and go/no-go recommendations.
• Log and triage defects in Jira with clear steps and severities.
• Support regression testing after bug fixes.
• Admin for Confluence and Jira platforms.
• Support lab testing automation and automated reporting.
• Assist sales with pre-sales product overview and training.
• Stay updated on SW testing standards and solar/storage trends.
• Stay abreast of solar and storage industry trends and technologies.

Skills

System integration

REST API testing

Python

Test planning

UI/UX collaboration

Automation mindset

Education

B.S. in Engineering

M.S. preferred

Tools

Postman

Insomnia

Jira

TestRail/Zephyr

Job description

Position Description

The System Integration Engineering Team is seeking a bright, self-motivated Sr. Software Integration and Validation Engineer to join our team.

The successful candidate will ensure products and systems are integrated between hardware, firmware (embedded SW), cloud, and SW applications to ensure complete synergy of our solar and storage solutions. You will also be validating the quality, reliability, and usability of our software products before they reach customers. You will design and execute comprehensive test strategies across our commissioning application, homeowner application, fleet manager, and API layer, ensuring each release meets the highest standards of performance and usability.

This position will collaborate with product management and both hardware and software developments teams to define technical aspect of product and system requirements for our next generation products including AC Modules, Inverters, Energy Storage Systems (ESS), energy management, home electrification and integrated software for the North American market.

This role will be the key point of contact between the system integration engineering team and the software development team to ensure requirements and solutions will meet the needs of our customers. This role will collaborate on software level roadmaps, full system level validation test plans, and schedules.

We are looking are a detail-oriented, technically curious tester who thrives at the intersection of software quality and customer experience. Your continued collaborate with developers, product managers, and field engineers to catch issues early, reduce customer-facing defects, and enable confident, on-time product launches will ensure we delight customers.

This position reports to the Head System Integration and Architecture Team. This position will be based out of Santa Clara, CA R&D Center. Travel is expected to be 20% to test facilities and other Qcells offices.

Responsibilities

• Collaborate with product management and development teams to ensure requirements meet systems level solution needs.
• Act as lead voice of customer for all UI/UX products and collaborate with product management to ensure delivery of best-in-class solution.
• Own system software level testing for system integration engineering as part of alpha validation phase including commissioning, homeowner application, fleet application, and APIs. Design, document, and execute manual test cases for the Commissioning App, Homeowner App, Fleet Manager, and Reporting modules.
• Execute structured usability testing to evaluate user workflows, navigation, and overall customer experience prior to release.
• Perform exploratory testing to surface edge cases and unexpected behaviours beyond scripted test coverage.
• Maintain and update test case libraries in accordance with product changes and new feature additions.
• Test REST APIs for correctness, error handling, and contract compliance.
• Develop and execute API test suites using tools such as Postman, Insomnia, or equivalent.
• Validate data integrity between front-end applications and backend services.
• Collaborate with backend engineers to understand service contracts and design targeted integration tests.
• Document and communicate test outcomes, defect status, and go/no-go recommendations to stakeholders. Produce clear, concise test summary reports and sign-off documentation for each release.
• Log, triage, and track defects in the issue tracking system (e.g., Jira) with clear reproduction steps and severity classifications.
• Support regression testing cycles following bug fixes and late-stage code changes.
• Administrator for system integration engineering confluence and Jira platforms.
• Support strategy proposals and drive lab testing automation and automated reporting.
• Support sales teams with pre-sales activities including product overview and training.
• Stay abreast of industry SW test standards and methods.
• Stay abreast of solar and storage industry trends and technologies.
• Research solar and storage completive intelligence and benchmarking.

Required Qualifications

• B.S. in Engineering (Electrical, Computer Science) required, MS preferred.
• 5-10 years technical expertise in solar modules, solar inverters, energy storage, and grid-tied/off grid HW and FW/SW systems.
• Demonstrated experience with manual testing techniques, including test case design, boundary value analysis, and exploratory testing.
• Hands-on experience testing REST APIs (Postman, Insomnia, or similar).
• Ability to read and understand software requirements, user stories, and acceptance criteria.
• Proficiency with defect tracking and test management tools (e.g., Jira, TestRail, Zephyr).
• Experience working with hardware and software development teams.
• Experience working with field facing sales, support, and sustaining teams.
• Experience testing apps and user interface tools.
• Proficiency in programing in python or other languages.
• Experience defining, reviewing online and print copy documentation is a plus
• Ability and proven experience to think creatively, learn quickly, and develop innovative solutions.
• Strong analytical and problem-solving skills
• Well-organized and proven ability to manage both individual and collaborative team projects.
• Self-motivated with the ability to work both independently and with multiple teams in a fast-paced environment.
• Clear written and verbal communication skills; able to document findings for both technical and non-technical audiences.
• Experience with multinational teammates in US and other countries
• Flexible, cross-functional, pro-active, can-do attitude.
• Proficient in Microsoft suite of products (Word, PowerPoint, Excel)
• Proficient in Atlassian suite of SW tools (confluence, JIRA)

Preferred Qualifications

• Experience testing mobile or tablet applications (iOS / Android).
• Experience in an IoT, energy, or hardware-software integration environment.
• ISTQB Foundation certification or equivalent qualification.
• Market and competitive intelligence experience
• Lab and outdoor testing experience
• Experience in solar and storage SW cyber security
• Experience testing with 3rd party products
• Experience with O&M and installer partners
• Experience working in a start-up or fast-paced growth environment
• Experience working in a global company with multi-national teammates in US and other countries
• Experience working with colleagues with different primary languages

Physical, Mental & Environmental Demands

To comply with the Rehabilitation Act of 1973 the essential physical, mental and environmental requirements for this job are listed below. These are requirements normally expected to perform regular job duties. Incumbent must be able to successfully perform all of the functions of the job with or without reasonable accommodation.

Mobility

Standing
20% of time

Sitting
70% of time

Walking
10% of time

Strength

Pulling
up to 10 Pounds

Pushing
up to 10 Pounds

Carrying
up to 10 Pounds

Lifting
up to 10 Pounds

Dexterity (F = Frequently, O = Occasionally, N = Never)

Typing
F

Handling
F

Reaching
F

Agility (F = Frequently, O = Occasionally, N = Never)

Turning
F

Twisting
F

Bending
O

Crouching
O

Balancing
N

Climbing
N

Crawling
N

Kneeling
N

The salary range is required by the California Pay Transparency Act and may differ depending on the location of those candidates hired nationwide. Actual compensation is influenced by a wide array of factors including but not limited to, skill set, education, licenses and certifications, essential job duties and requirements, and the necessary experience relative to the job’s minimum qualifications.

• This target salary range is for CA positions only and should not be interpreted as an offer of compensation.

You may view your privacy rights by reviewing Qcells' Privacy Policy or by contacting our HR team for a copy.