ISRO Preparation Guide
Complete preparation strategy
ISRO Interview Experience 2025-2026 | Real Candidate Stories & Tips
Read authentic ISRO interview experiences from recent candidates 2025-2026. Round-by-round breakdown, questions asked, preparation tips, and strategies for ISRO placement.
ISRO (Indian Space Research Organisation) recruits through a written exam (90 min, technical discipline-specific + general aptitude + space technology), technical interview, and HR/personality round. The process typically takes 4–6 weeks. Eligibility is 65% / 6.5+ CGPA; freshers join as Scientist/Engineer (SC) with ₹8–12 LPA. ISRO values strong fundamentals and genuine interest in space technology.
ISRO Interview Process at a Glance
Section titled “ISRO Interview Process at a Glance”| Round | Duration | Focus Areas |
|---|---|---|
| Written Examination | 90 min | Technical (50–60 Q, discipline-specific), General Aptitude (20–25 Q), Space Technology (10–15 Q). Often negative marking (e.g. 0.25 per wrong). |
| Technical Interview | 60 min | Core engineering, space technology (satellites, propulsion, orbital mechanics), project discussion. |
| HR/Personality Round | 30 min | Motivation for ISRO, interest in space, career goals, behavioral. |
Experience 1: Scientist/Engineer SC (Aerospace) – Selected ✅
Section titled “Experience 1: Scientist/Engineer SC (Aerospace) – Selected ✅”Date: October 2024 · Branch: Aerospace · Package: ₹8–12 LPA
Written Test
Section titled “Written Test”Technical had aerodynamics, propulsion, structures, and flight mechanics. A few questions on orbital mechanics and satellite basics. Aptitude was moderate. Space technology section had ISRO missions (PSLV, GSLV, Chandrayaan, Mars Orbiter). Tip: Revise GATE-level core subjects; basic space tech (Kepler, orbits, propulsion) is essential.
Technical Round
Section titled “Technical Round”Started with project discussion, then: specific impulse and its significance, difference between geostationary and geosynchronous orbit, and components of a satellite communication system. They asked why I want to join ISRO. Tip: Prepare ISRO missions (Chandrayaan, Gaganyaan, Aditya-L1); explain concepts clearly.
HR Round
Section titled “HR Round”Questions: Why ISRO? Interest in space technology? Where do you see yourself in 5 years? Willingness to work at ISRO centres. Tip: Show genuine passion for space; mention recent ISRO achievements.
Experience 2: Scientist/Engineer SC (ECE) – Selected ✅
Section titled “Experience 2: Scientist/Engineer SC (ECE) – Selected ✅”Date: November 2024 · Branch: ECE · Package: ₹8–12 LPA
Written Test
Section titled “Written Test”Technical covered circuits, signals, communication, and control. Space technology had satellite communication, remote sensing basics, and one question on launch vehicles. Tip: Practice previous year papers; time allocation across sections matters.
Technical Round
Section titled “Technical Round”Project discussion, then: explain transponder, basics of remote sensing, and how attitude control works. They asked about my interest in satellite systems. Tip: Link your project to space/communication applications if possible.
HR Round
Section titled “HR Round”Short: motivation for ISRO, knowledge of recent missions (e.g. Chandrayaan-3), career goals. Tip: Stay updated on ISRO’s latest missions and goals (e.g. Gaganyaan).
Common Questions at ISRO
Section titled “Common Questions at ISRO”Technical
Section titled “Technical”- Discipline: Core subjects (Aerospace/Electronics/Mechanical/CS/Electrical as per branch).
- Space technology: Specific impulse, orbital mechanics (Kepler, Hohmann), geostationary vs geosynchronous, satellite subsystems, PSLV/GSLV, ISRO missions.
- Project: Detailed discussion on final-year project.
- Why ISRO? Why space technology?
- What do you know about ISRO’s recent missions?
- Where do you see yourself in 5 years?
- Willingness to work at ISRO centres (e.g. Bengaluru)?
Related Resources
Section titled “Related Resources”ISRO Coding Questions
Programming (CS/relevant roles)
ISRO 2025 Papers
Previous year papers
ISRO Main Page
Eligibility, process, salary
Written by the placementpapers.app editorial team · Verified by industry hiring professionals
Last updated: February 2026