ISRO Technical Assistant Syllabus, Exam Pattern, Eligibility

All three centres used the same test:

IPRC sets its paper in English and Hindi. ISTRAC lets you take the CBT in either language.

The written and skill tests are based on your diploma curriculum. LPSC says the paper tests theoretical and practical knowledge across both breadth and depth of the course. No centre publishes a topic list beyond that.

A first class diploma in the advertised branch from a recognised State Board. IPRC also accepts related branches: Production for Mechanical, and Electronics, Electronics & Telecommunication or Electronics & Instrumentation for Electronics & Communication.

ISTRAC does not accept a diploma earned through open and distance learning, and won't consider anyone still awaiting results.

Age 18 to 35, reckoned on the closing date of each advertisement (20 July at ISTRAC, 4 September at LPSC, 5 October at IPRC). SC and ST candidates get 5 extra years and OBC candidates 3, but only against posts reserved for them. Ex-servicemen, PwBD candidates, departmental staff, widows and divorced or judicially separated women get relaxation under Government orders. EWS gets none.

1. ISTRAC first screens applications on academic marks and calls only those screened in for the CBT.
2. Written test or CBT.
3. Skill test for five candidates per post (at least ten), taken from the written test merit list. It is pass or fail.
4. Final selection on written test marks alone, among those who pass the skill test. A tie goes to the higher diploma marks.

Selected candidates can be posted to any ISRO or Department of Space unit. ISTRAC posts may involve round-the-clock shifts.

Level 7: ₹44,900 to ₹1,42,400, plus DA and the other admissible allowances. ISRO gives free transport in place of Transport Allowance at many centres and limited quarters in place of HRA. Pension is NPS or the Unified Pension Scheme.

Technical staff are promoted under the Merit Promotion Scheme, on review after a set residency period, not on vacancies.

Each centre takes applications online through its own portal, linked from the ISRO Careers page. The fee works the same way at all three:

• Pay ₹750 when you apply.
• Sit the written test and you get ₹500 back, or the full ₹750 if you are a woman, SC, ST, PwBD or ex-serviceman candidate.
• Don't sit it and nothing comes back.

Apply separately for each post you want. Government employees need a No Objection Certificate by the skill test.

• ISTRAC: Bengaluru or other cities across India; the skill test only in Bengaluru.
• LPSC: Thiruvananthapuram only, for both the written and skill tests.
• IPRC: an offline OMR test in Tirunelveli or Chennai, chosen when you apply and not changeable.

LPSC and ISTRAC pay no travel allowance for the written test; outstation candidates called for the skill test get second-class rail fare.

• Revise your full diploma syllabus, including the practical subjects. The skill test is also based on it.
• The minus 0.33 rule makes a blind guess on four options worthless on average. Answer what you can work out.
• Small centres advertise only a few posts each, at different times of year. Check the ISRO Careers page every few weeks.

• ISRO Careers: all centre advertisements
• IPRC/RMT/2026/01 and advertisement PDF
• LPSC/02/2026 and advertisement PDF; apply on lpsc.gov.in
• ISTRAC:02:2026 and advertisement PDF
• Old question papers from ISRO centres

Is there a common ISRO Technical Assistant exam?

No. Each centre advertises and tests separately.

What qualification is needed?

A first class diploma in engineering in the advertised branch.

What is the pay?

Level 7, starting at ₹44,900 basic.

Does the skill test score count?

No. You only need to pass it. The written test decides the rank.

Which Technical Assistant posts are open now?

IPRC Mahendragiri, until 24 October 2026.

Is there negative marking?

Yes, 0.33 per wrong answer.