DRDO Scientist

Designing, building and testing defence technology such as radars, missiles, aircraft systems, sensors, materials and software. You work in teams in a DRDO lab, run trials and write technical reports. Some work is at test ranges and field sites.

A day in the work
You reach the lab in the morning and check the overnight results of a test or simulation. Then you meet your team to plan the week's work on a radar part, a software module or a material sample. Much of the day goes in design work, lab trials and writing reports. Some days you are at a test range or a user trial with the armed forces. Work on defence projects can be confidential, so you do not talk about much of it outside.

1. Step 1 · Class 11–12Take Physics, Chemistry and Maths (PCM) and build a strong base. Then get into a B.E./B.Tech course through JEE Main, a state entrance exam or the college's own route. Choose a branch that DRDO hires for, such as Electronics & Communication, Mechanical, Computer Science, Aerospace, Electrical, Metallurgy or Chemical.
2. Step 2 · 4 yearsComplete your B.E./B.Tech with First Class marks. The 2025 notice also let final-semester students apply if they expected First Class, so long as they submitted their degree by the date given in the notice.
3. Step 3 · Final year or afterSit GATE in the paper that matches your branch (for example EC, ME, CS, EE or AE). RAC says you need a valid GATE score on the crucial date of eligibility. A GATE score is valid for 3 years. A September 2026 notice reportedly asks candidates to appear in GATE 2027, which is due in February 2027. (reported — check with the official body)
4. Step 4 · When RAC advertisesApply online on rac.gov.in when a Scientist 'B' advertisement comes out. RAC advertises only when it has vacancies, so there is no fixed yearly date. In Advt. 156 (2025), candidates were shortlisted by GATE score, discipline-wise and category-wise, in the ratio of 1:10.
5. Step 5 · InterviewShortlisted candidates appear for a personal interview, in Delhi or another place decided by RAC/DRDO. Final merit in 2025 was 80% GATE score and 20% interview. You had to score at least 70% in the interview if unreserved, or 60% if EWS/OBC/SC/ST/Divyangjan, to enter the final merit list.
6. Step 6 · JoiningSelected candidates join as Scientist 'B' in a DRDO lab. RAC has put out a notice about post-induction training for selected candidates. A new government officer normally serves a probation period, but I could not confirm DRDO's exact length from an official page. (reported — check with the official body)
7. OptionalM.Tech or PhD later. These help you grow into senior research roles. They are not needed for the Scientist 'B' entry in the 2025 notice.

• Engineering graduate (the main route)First Class B.E./B.Tech, then a valid GATE score in your branch, then the RAC interview. This is how most Scientist 'B' posts were filled in the 2025 notice (127 of 152 posts were in DRDO itself).
• Science postgraduateA First Class M.Sc in Physics, Chemistry or Maths, plus the matching GATE score (PH, CY or MA), was accepted for some posts in 2025. Posts at the Armed Forces Medical College (AFMC) and the Services Selection Boards took life-science, statistics and psychology postgraduates. All of these also needed the matching GATE paper.
• Experienced professionalsRAC also advertises higher Scientist posts (C, D, E) for people with years of relevant work experience. I could only find this described on non-official sites, so check rac.gov.in before relying on it.Reported — confirm on the official site.

Fees from: RAC, DRDO: Advertisement No. 156 (2025) · NIT Uttarakhand B.Tech Fee Structure 2026-27 (PDF) · GATE 2027 Information Brochure, revised 17 Oct 2026 (IIT Madras) · GATE 2027 Application Fees (IIT Madras) · PM-USP CSSS FAQs 2025-26 (Ministry of Education) · PM-USP CSSS Guidelines (scholarships.gov.in). Fees change every year — check the college's own fee page before you pay.

Pay starts at the same government level for everyone, but take-home changes with the city of posting, allowances and your promotions over the years.

In Advt. 156 (2025), the upper age limit was relaxed by up to 10 years for Divyangjan candidates, and some posts were reserved for Divyangjan (HH, LD, AAV/Dw) in the listed disciplines. Age limits were higher for OBC (non-creamy layer) and SC/ST candidates, and posts were reserved by category. The notice does not mention any special seats for women; the fee waiver for women is reported on non-official sites (reported).

• Class 7–9Make a small working model this month, such as a paper glider or a simple circuit, and test what changes how far it flies. If your school allows, enter the science exhibition or the INSPIRE Awards (DST).Open link ↗
• Class 10–12Start a free NPTEL or SWAYAM course in basic electronics, programming or mechanics, and finish one unit with notes. This builds the base that every DRDO branch needs.Open link ↗
• College or afterRead the latest Scientist 'B' notice and the public notice on rac.gov.in. Check which branches and GATE papers are listed for your branch. Also watch drdo.gov.in, where fellowships and apprenticeships are posted.Open link ↗

• A valid GATE score is a must for Scientist 'B' direct recruitment. RAC's 2025 advertisement warns that a false GATE score can lead to legal action against the candidate.
• Posts shown as ADA (Aeronautical Development Agency) in the notice are Scientist/Engineer 'B' posts but are not part of DRDO. "Encadred" posts, for example at CME Pune, are paid by the armed services and cannot be moved to DRDO labs.
• RAC says it notifies vacancies depending on requirement. In 2025, Advt. 156 first closed on 4 July and was extended to 8 August, with age counted as on 4 July 2025. Always check rac.gov.in for the current notice.
• Not sure about GATE or a 4-year degree? DRDO also hires technical assistants and technicians through separate notices on drdo.gov.in. These need a diploma, B.Sc or ITI, not a B.Tech.