IOCL Junior Engineer Recruitment 2025 – Online Form, Exam Pattern & Key Details

Indian Oil Corporation Limited (IOCL) has released its Junior Engineer (Diploma Engineer, Grade – E0) recruitment notification for 2025. This is a great opportunity for diploma holders in various engineering disciplines. Below is a full breakdown of everything you need to know before applying.

Important Dates

Event	Date
Notification / Advertisement Released	12 September 2025
Online Application Start Date	12 September 2025
Last Date to Apply Online	28 September 2025
Admit Card / Call Letter Release	16 October 2025
Exam Date (Computer Based Test / CBT)	31 October 2025

Total Posts & Qualification

Post Name	Total Posts	Qualification
Junior Engineer / Junior Officer (Chemical, Mechanical, Electrical, Instrumentation)	Not Disclosed	Diploma in the related Engineering field with 65% marks (for General/OBC/EWS) and 55% marks (for SC/ST/Reserved categories). (Read notification for detailed eligibility)

Age Limit Details

Minimum Age: 18 years
Maximum Age: 26 years (as on 01 July 2025) for general category candidates
Relaxation: Age relaxation will apply as per government rules for OBC / SC / ST / PwBD / Ex-servicemen etc.

Application Fee

General / OBC-NCL / EWS: ₹ 400 + applicable GST
SC / ST / PwBD: Exempted (no application fee)
Mode of Payment: Online only (debit/credit/internet banking etc.)

Selection Process

Here are the stages through which candidates will be selected:

Computer Based Test (CBT) – Objective type questions covering domain knowledge + general aptitude etc.
Group Discussion (GD) / Group Task (GT) – May be part of selection for some candidates.
Personal Interview (PI) – For those shortlisted after earlier rounds.
Document Verification & Medical Examination – Final formalities before appointment.

Exam (CBT) Pattern

Here is the expected / announced pattern of the written test:

Exam Mode: Computer Based Test (CBT)
Type of Questions: Objective (MCQs)
Negative Marking: 1/4th (0.25 marks deducted for each wrong answer)

Subject	Questions	Marks	Duration
Domain Knowledge (Technical Subject)	50	50	02:30 Hours (150 Minutes)
Quantitative Aptitude	20	20
Logical Reasoning	15	15
Verbal Ability (English Language)	15	15
Grand Total	100	100	02:30 Hours

Important Related Links

Content Type Issued On Link
Fill Online Form 12/09/2025 Click Here
Full Notification 12/09/2025 Click Here
Official Website 12/09/2025 Click Here

Content Type	Issued On	Link
Fill Online Form	12/09/2025	Click Here
Full Notification	12/09/2025	Click Here
Official Website	12/09/2025	Click Here

Application Process

Here’s how to apply step-by-step:

Go to the official IOCL website → Click Here.
Find the link for Junior Engineer (Diploma) Recruitment 2025 (Advt. No. IOCL/CO-HR/RECTT/2025/02).
Register using a valid email ID and mobile number; keep them active.
Fill the online application form with personal, educational, contact details. Upload required documents like passport-size photo, signature etc.
Pay the application fee if applicable.
Submit the application and take a printout or save confirmation for future reference.
Download the admit card when released ~ around 16 October 2025 through the IOCL portal.
Appear in the CBT exam on 31 October 2025 at the allotted exam centre.