The ISRO Scientist/Engineer (SC) interview is a technical viva that follows the written examination and assesses genuine engineering depth in your discipline.
In 2026 expect a panel that drills into core subject fundamentals, your final-year project and any publications, and applied design reasoning (for example, which sensors you would fuse for a guidance algorithm and why). Interviewers value first-principles clarity, honest 'I don't know' over bluffing, and awareness of how your specialisation connects to space and defence applications. Because ISRO hires for long-term research careers, the panel also gauges motivation and awareness of the PSU pay structure versus private offers. Revise your core branch subjects and project cold, and be ready to reason aloud through open-ended design questions.
Written examination in your discipline
Shortlisting based on written score
Technical interview (viva) before a panel
Final merit list and appointment
Stage 1
written exam in your engineering discipline (screening).
Stage 2
technical interview/viva before an ISRO panel on fundamentals, project, and applied design.
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Sign up free: unlock all questionsThe typical ISRO recruitment process has 4 stages: Written examination in your discipline → Shortlisting based on written score → Technical interview (viva) before a panel → Final merit list and appointment.
ISRO typically conducts 2 interview rounds: Stage 1: written exam in your engineering discipline (screening).; Stage 2: technical interview/viva before an ISRO panel on fundamentals, project, and applied design..
HireStepX recommends the First-Principles-Depth framework for this type of interview: Show deep command of your core discipline and project, reason from first principles on applied design questions, and be honest about the limits of your knowledge
To answer this question well, HireStepX recommends the First-Principles-Depth approach: Show deep command of your core discipline and project, reason from first principles on applied design questions, and be honest about the limits of your knowledge Ground your answer in a specific real example from your own experience.
To answer this question well, HireStepX recommends the First-Principles-Depth approach: Show deep command of your core discipline and project, reason from first principles on applied design questions, and be honest about the limits of your knowledge Ground your answer in a specific real example from your own experience.
To answer this question well, HireStepX recommends the First-Principles-Depth approach: Show deep command of your core discipline and project, reason from first principles on applied design questions, and be honest about the limits of your knowledge Ground your answer in a specific real example from your own experience.
To answer this question well, HireStepX recommends the First-Principles-Depth approach: Show deep command of your core discipline and project, reason from first principles on applied design questions, and be honest about the limits of your knowledge Ground your answer in a specific real example from your own experience.
To answer this question well, HireStepX recommends the First-Principles-Depth approach: Show deep command of your core discipline and project, reason from first principles on applied design questions, and be honest about the limits of your knowledge Ground your answer in a specific real example from your own experience.