Validation Engineer – SST Solutions - Morrisville/Raleigh, NC

Delta, founded in 1971, is a global leader in switching power supplies and thermal management products with a thriving portfolio of smart energy-saving systems and solutions in the fields of industrial automation, building automation, telecom power, data center infrastructure, EV charging, renewable energy, energy storage and display, to nurture the development of smart manufacturing and sustainable cities. As a world-class corporate citizen guided by its mission statement, “To provide innovative, clean and energy-efficient solutions for a better tomorrow,” Delta leverages its core competence in high-efficiency power electronics and its ESG-embedded business model to address key environmental issues, such as climate change. Delta serves customers through its sales offices, R&D centers and manufacturing facilities spread over close to 200 locations across five continents. Delta has 158 sales offices, 72 R&D centers and 48 manufacturing facilities worldwide.

Throughout its history, Delta has received various global awards and recognition for its business achievements, innovative technologies, and dedication to ESG. Since 2011, Delta has been listed on the DJSI World Index of Dow Jones Sustainability™ Indices for 11 consecutive years. In 2021, Delta was also recognized by CDP with leadership level ratings for its substantial contribution to climate change and water security issues and named Supplier Engagement Leader for its continuous development of a sustainable value chain.

About The Role We are building the next generation of solid‑state, grid‑interactive power blocks that enable high‑density, flexible power delivery for datacenters, renewable energy systems, and advanced microgrids .

The Validation Engineer is responsible for planning, executing, and owning system‑level validation activities for Solid‑State Transformer (SST) and microgrid solutions . This role ensures that products meet functional, performance, reliability, and grid‑interaction requirements across simulation, HIL, laboratory, and early field environments.

The Validation Engineer acts as the bridge between design intent and real‑world behavior , working closely with simulation, HIL, controls, hardware, application, and standards teams to verify that system requirements are correctly implemented and robust under normal, abnormal, and fault conditions.

At Delta, we’re leading the energy transition with innovative solutions in solar inverters, energy storage systems, and EV charging infrastructure. Our technologies are helping utilities, businesses, and communities decarbonize and build resilient, intelligent energy ecosystems. Join us in creating a cleaner, smarter energy future.

Key Responsibilities System‑Level Validation Planning

• Develop validation plans and strategies for SST and microgrid products across development stages

• Translate system, functional, and grid‑interaction requirements into clear validation test cases and acceptance criteria

• Define validation coverage across:

• Grid‑connected operation

• Islanded microgrid operation

• Mode transitions and recovery

• Abnormal and fault conditions

Test Execution Across Environments

• Execute and coordinate validation activities across multiple platforms, including:

• Offline simulation (with simulation engineers)

• HIL / RTDS‑based testing

• Laboratory and hardware‑based testing

• Ensure consistency and traceability of validation results across simulation, HIL, and hardware

Functional & Performance Validation

• Validate system behavior related to:

• Voltage, current, and power regulation

• Dynamic response and transient performance

• Load changes and operating envelope limits

• Verify system behavior against defined requirements and operating scenarios

Fault, Protection & Abnormal Condition Validation

• Support validation of:

• Fault detection and protective actions

• System response under grid disturbances

• Recovery and reconnection behavior

• Work with HIL and protection teams to validate:

• Fault handling logic

• Timing, sequencing, and coordination of protective actions

• Ensure system behavior is predictable and safe under faulted and stressed conditions

Standards & Requirement Compliance Support

• Support validation activities aligned with US interconnection and grid expectations, including:

• IEEE 1547 / 1547.1 (as applicable)

• Utility interconnection and operational requirements

• Provide validation evidence to support:

• Certification readiness

• Utility technical reviews

• Customer acceptance

Issue Tracking & Cross‑Functional Collaboration

• Identify, document, and track validation issues and anomalies.

• Work closely with:

• Controls and firmware engineers to diagnose behavior

• Simulation and HIL engineers to reproduce issues

• Hardware teams to correlate lab and system‑level results

• Support root‑cause analysis and verification of corrective actions

Documentation & Reporting

• Maintain clear and structured validation documentation, including:

• Validation plans and test procedures

• Test results and reports

• Requirement‑to‑test traceability

• Communicate validation status, risks, and findings to technical stakeholders

Minimum Qualifications

• Bachelor’s degree in Electrical Engineering, Power Systems, Power Electronics, or related field

• 3+ years of experience in system validation, verification, or test engineering for power or energy systems

• Strong understanding of:

• Power electronics and inverter‑based systems

• Grid‑connected and islanded operation

• Power system dynamics and transient behavior

• Experience working with simulation, HIL, or laboratory validation environments

• Ability to translate high‑level requirements into executable validation activities

Preferred Qualifications

• Master’s degree in Electrical Engineering or related discipline

• Experience validating:

• SSTs, MV/LV converters, or advanced power conversion systems

• Microgrids or distribution‑level power systems

• Familiarity with:

• HIL platforms (e.g., RTDS)MATLAB/Simulink or EMT‑based simulation tools

• Protection concepts and fault response of inverter‑based systems

• Experience supporting:

• Utility‑facing validation or pilot deployments

• Certification or interconnection readiness activities

• Strong analytical and root‑cause problem‑solving experience

Benefit at Delta Electronics Americas Life at Delta

EEO Statement Delta Electronics Americas is an Equal Opportunity Employer and is committed to compliance with all applicable federal, state, and local laws. Delta Electronics America is committed to fostering a diverse, inclusive, and respectful workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, age, marital status, national origin, disability, veteran status, or any other protected characteristic.