ISRO Scientific Assistant Exam Pattern, Eligibility

The CBT can be taken in Hindi or English. Its syllabus follows the B.Sc. curriculum of the subject.

A first class B.Sc. with Computer Science (post 007) or Mathematics (post 008) as the main subject, from a recognised university. You must have passed by 20 July 2026; final-year students waiting for results could not apply.

Age 18 to 35 as on 20 July 2026. SC and ST candidates get 5 years and OBC candidates 3 years extra, only where the post is reserved for them. Departmental staff, ex-servicemen, PwBD candidates, meritorious sportspersons, and widowed, divorced or judicially separated women get relaxation as per Government orders. EWS candidates get no age relaxation.

ISTRAC first screens applications on academic performance; only those screened in sit the CBT. The CBT shortlist for the skill test is five per post, with at least ten. The skill test is go or no-go, and the final order among those who pass comes from CBT marks. If two candidates tie, their degree marks decide.

Level 7 of the pay matrix, ₹44,900 a month plus admissible allowances. ISRO provides free transport instead of Transport Allowance, limited housing instead of HRA, a medical scheme, LTC and group insurance. Pension under NPS or UPS. Promotion is by the Merit Promotion Scheme for scientific and technical staff.

ISTRAC took applications online through istrac.gov.in and the ISRO website. The fee was collected as ₹750 at the time of applying. Candidates who sat the CBT were due ₹500 back, and women, SC, ST, PwBD and ex-servicemen the whole ₹750. Applications could not be edited once submitted. Queries went to rmt-istrac@istrac.gov.in.

ISTRAC runs spacecraft control centres and ground stations, and its staff may work round-the-clock shifts.

The CBT was held in Bengaluru or other cities. The skill test is in Bengaluru only, and outstation candidates are paid second-class sleeper fare for it.

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What qualification is needed for ISRO Scientific Assistant?

A first class B.Sc. with the advertised subject as the main subject.

Which subjects were advertised in 2026?

Computer Science (4 posts) and Mathematics (1 post), at ISTRAC.

What is the pay?

Level 7, ₹44,900 basic plus allowances.

Is there negative marking?

Yes, 0.33 marks for each wrong answer.

Does everyone who applies get to sit the test?

No. ISTRAC screens applications on academic record first.