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# Diagnostic Systems Engineer

- **Company:** Pi-Square Technologies LLC
- **Location:** United States
- **Contract:** Permanent contract
- **Skills:** Systems Engineering, Unit Testing, C++ (Programming Language), Python (Programming Language), Regression Testing, Reliability of Systems, Data Analytics, C++14, Databricks
- **Published:** September 13, 2026
- **Apply:** https://www.dice.com/job-detail/e96554be-9afd-4b02-90cd-c21f6e523a0e

## About the Role

* Strong proficiency in Modern C++ development within embedded or safety-critical environments.
 * Experience with Vehicle Diagnostics Standards and Protocols:
 + UDS (ISO 14229)
 + DTC Management
 + OBD-II (SAE J1979)
 + CAN
 + LIN
 + Automotive Ethernet
 * Strong experience with Python for data analytics, validation, and visualization.
 * Hands-on experience working with Databricks or similar large-scale telemetry platforms.
 * Knowledge of Control Systems, State Estimation, Model-Based Diagnostics, and Fault Detection Algorithms.
 * Experience performing root cause analysis, fault isolation, and troubleshooting across hardware and software domains.
 * Strong communication and documentation skills.

## Description

We are seeking an experienced Diagnostic Systems Engineer / Vehicle Diagnostics Engineer with strong expertise in vehicle diagnostics, embedded systems, C++ development, data analytics, and fault detection algorithms. The ideal candidate will be responsible for designing, implementing, validating, and improving real-time diagnostic monitors while leveraging fleet data analytics to enhance system reliability and fault detection performance., * Design and implement real-time diagnostic algorithms and monitors in modern C++, including fault detection, signal plausibility checks, degradation monitoring, and fault isolation logic.

 * Perform software unit testing, HIL testing, SIL testing, and automated regression testing to validate diagnostic software.
 * Develop and maintain diagnostic requirements, including detection thresholds, debounce logic, fault handling, and response strategies.
 * Ensure traceability between diagnostic requirements and system/component-level failure modes.
 * Analyze large-scale fleet and telemetry data using Python and Databricks to evaluate diagnostic performance and optimize detection thresholds.
 * Lead root cause investigations of field-reported issues using logged data, vehicle telemetry, and replay tools.
 * Collaborate with hardware, software, controls, and calibration teams to resolve complex system issues.
 * Create technical specifications, diagnostic documentation, and troubleshooting procedures for engineering and fleet operations teams.
 * Monitor fleet-wide diagnostic KPIs and continuously improve diagnostic coverage, detection accuracy, and system reliability.
 * Support the development of new diagnostic monitors and vehicle health monitoring capabilities.