Validation Engineer – SST Solutions

Who We Are:
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.

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
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