DRDO Preparation Guide
Complete preparation strategy
DRDO Interview Experience 2025-2026 | Real Candidate Stories & Tips
Read authentic DRDO interview experiences from recent candidates 2025-2026. Round-by-round breakdown, questions asked, preparation tips, and strategies for DRDO placement.
DRDO (Defence Research and Development Organisation) recruits through a written exam (90 min, technical discipline-specific + aptitude + general awareness, with negative marking), technical interview, and HR/personality round. The process takes 2–3 weeks. Eligibility is 65% / 6.5+ CGPA; freshers join as Scientist B (₹8–12 LPA). DRDO values technical depth, defence technology awareness, and research orientation.
DRDO Interview Process at a Glance
Section titled “DRDO Interview Process at a Glance”| Round | Duration | Focus Areas |
|---|---|---|
| Written Examination | 90 min | Technical (60–70 Q, discipline-specific), General Aptitude (20–25 Q), General Awareness (10–15 Q), English (10–15 Q). Negative marking (0.25 per wrong). |
| Technical Interview | 60 min | Core engineering, defence technology (missile, radar, weapon systems), project/research discussion. |
| HR/Personality Round | 30 min | Motivation for DRDO, interest in defence research, career goals, behavioral. |
Experience 1: Scientist B (Electronics) – Selected ✅
Section titled “Experience 1: Scientist B (Electronics) – Selected ✅”Date: October 2024 · Branch: ECE · Package: ₹8–12 LPA
Written Test
Section titled “Written Test”Technical was heavy on circuits, signals, communication, and embedded systems. A few questions on radar and communication systems. Aptitude and general awareness (including DRDO/defence) were moderate. I avoided blind guessing due to negative marking. Tip: Focus on your discipline; revise defence applications of your branch (e.g. radar, guidance).
Technical Round
Section titled “Technical Round”Started with project discussion, then: working of radar, difference between ballistic and cruise missile, and core ECE concepts (modulation, filters). They asked about my interest in defence research. Tip: Prepare 2–3 DRDO projects (e.g. Agni, BrahMos, radars); explain concepts clearly.
HR Round
Section titled “HR Round”Questions: Why DRDO? Interest in serving the nation? Where do you see yourself in 5 years? Tip: Show genuine motivation for defence R&D; avoid generic answers.
Experience 2: Scientist B (Mechanical) – Selected ✅
Section titled “Experience 2: Scientist B (Mechanical) – Selected ✅”Date: November 2024 · Branch: Mechanical · Package: ₹8–12 LPA
Written Test
Section titled “Written Test”Technical covered thermodynamics, mechanics, design, and manufacturing. A few questions on propulsion and structures. General awareness had current affairs and DRDO achievements. Tip: Practice previous year papers; manage time and avoid random guesses.
Technical Round
Section titled “Technical Round”Project discussion, then: types of propulsion, stress analysis basics, and how your project can relate to defence. They asked about teamwork and handling failure. Tip: Link academic work to defence/industrial applications where possible.
HR Round
Section titled “HR Round”Short: motivation for DRDO, family background, willingness to work at lab locations. Tip: Be clear and professional; show commitment to long-term research.
Common Questions at DRDO
Section titled “Common Questions at DRDO”Technical
Section titled “Technical”- Discipline: Core subjects (Aerospace/Electronics/Mechanical/CS/Electrical as per branch).
- Defence: Radar working, missile types (ballistic vs cruise), stealth basics, DRDO projects (Agni, BrahMos, Akash, etc.).
- Project: Detailed discussion on final-year project and any research work.
- Why DRDO? Why defence research?
- Interest in serving the nation?
- Knowledge of DRDO labs and achievements?
- Where do you see yourself in 5 years?
Related Resources
Section titled “Related Resources”DRDO Coding Questions
Programming (CS/relevant roles)
DRDO 2025 Papers
Previous year papers
DRDO Main Page
Eligibility, process, salary
Written by the placementpapers.app editorial team · Verified by industry hiring professionals
Last updated: February 2026