Diagnostics Engineer

Aftermarket Diagnostics Engineer At Tata Technologies, we make product development dreams a reality by designing, engineering, and validating the products of tomorrow for the world’s leading manufacturers. Role Overview We are seeking an experienced Aftermarket Diagnostics Engineer to develop and verify workshop-ready diagnostic fault-tracing methods for vehicle repair and service operations. The role involves analysis, development, documentation, and verification of aftermarket diagnostic content in collaboration with cross-functional engineering, digital, and service teams. Key Responsibilities

• Map vehicle functions to relevant aftermarket customer functions.
• Develop FMEA-based diagnostic content for aftermarket service applications.
• Create and maintain signal information for diagnostic systems.
• Prepare Diagnostic Trouble Code (DTC) information for Electronic Control Units (ECUs).
• Develop component tests and manage component variants.
• Create parameter and activation descriptions for ECUs.
• Develop diagnostic sequences, service functions, and pre-delivery service procedures.
• Prepare component specifications and technical inspection documentation.
• Define customer symptom codes and supporting diagnostic content.
• Analyze engineering inputs including:
• System and software specifications
• Wiring diagrams
• Network topology
• Configuration and calibration data
• Function descriptions
• Component information
• Technical specifications
• Plan and manage assigned features, objectives, deliverables, dependencies, and backlog activities.
• Support regular synchronization, planning, and refinement meetings.
• Coordinate verification activities and ensure availability of required test objects.
• Escalate missing, incomplete, or unclear technical information when required.
• Perform end-to-end validation of diagnostic methods for workshop and service environments.

Project Deliverables

• Technical specification reviews.
• Prototype verification support and test equipment validation.
• Vehicle function mapping and diagnostic content creation.
• DTC definitions, parameters, and activation information.
• FMEA content, component tests, and diagnostic sequences.
• Signal information and default diagnostic definitions.
• Service-function and pre-delivery service scripts.
• Customer symptom code definitions.
• End-to-end testing, validation, and verification reports.

Required Qualifications

• Bachelor's degree in Engineering or equivalent experience.
• Proven experience within the automotive industry, preferably in vehicle diagnostics, fault tracing, or aftermarket services.
• Ability to analyze: DTCs, Signals, Customer symptoms, Vehicle functions, Components, Wiring diagrams, Network topologies
• Strong understanding of automotive diagnostic standards.
• Good knowledge of UDS (ISO 14229), including: Diagnostic sessions, DTCs, DIDs, Routines, I/O controls, Parameters and activations
• Experience working with in-vehicle digital systems and ECUs.
• Understanding of CAN, LIN, and automotive communication networks.
• Basic understanding of vehicle configuration management, ECU variants, and applicability handling.
• Experience developing: Diagnostic sequences, Component tests, Fault-tracing methods
• Service diagnostics
• Experience with vehicle, bench, prototype, or diagnostic-system verification.
• Knowledge of scripting tools, logic-based development methods, or high-level programming languages.
• Ability to transform engineering data into structured service and diagnostic content.
• Fluent English communication skills.
• Strong teamwork and stakeholder management capabilities.

Technical Skills Experience with automotive diagnostic development environments, service-authoring platforms, fault analysis tools, and diagnostic verification tools is highly desirable. Preferred knowledge includes:

• Automotive diagnostic authoring tools
• Service and repair information systems
• ECU diagnostics and communication protocols
• Fault-tracing and root-cause analysis tools
• Diagnostic content management systems
• UDS diagnostics and related standards

Work Practices

• Work within a feature-based development and delivery model.
• Break down assigned scope into deliverable-driven development plans.
• Maintain backlog activities and proactively manage dependencies.
• Collaborate with engineering, service, digital, and external stakeholders.
• Operate effectively in environments where technical inputs may evolve during development.
• Support verification activities and occasional travel as required.

Desired Profile The successful candidate will demonstrate:

• End-to-end ownership from analysis through verification.
• Strong technical accuracy and attention to detail.
• Ability to translate engineering requirements into practical workshop diagnostic solutions.
• Effective stakeholder communication and dependency management.
• Proactive problem-solving and escalation skills.
• Comfort working across multiple teams and geographically distributed organizations.

If you are passionate about mechatronics, automotive electronics, and leading high-impact engineering projects, we would love to hear from you. Tata Technologies: Engineering a better world.