IOCL
IOCL
About IOCL
IOCL is hiring for Engineer / Officer - Grade A Computer Science & IT Recruitment 2026
IOCL facts
- Exam Name:
- IOCL CS & IT Engineers/Officers Recruitment Exam 2026
- Conducting Body:
- Indian Oil Corporation Limited (IOCL)
- Posts/Purpose:
- Recruitment for Engineer/Officer, Grade A in Computer Science & Information Technology
- Eligibility:
- Full-time B.E./B.Tech/Equivalent in CS/IT (Min. 65% for Gen/EWS/OBC-NCL, 55% for SC/ST/PwBD); Upper age limit of 26 years for General/EWS (relaxations as per GoI rules); No work experience required.
- Application Dates:
- Registration scheduled to commence in mid-August 2026; last date to apply tentatively August 31, 2026.
- Exam Date:
- CBT tentatively scheduled for September 24, 2026.
- Exam Mode:
- Computer-Based Test (CBT)
- Question Type/Pattern:
- Duration: 150 minutes (2.5 Hours) Total Marks: 100 Marks (100 Objective MCQs) Breakup: Domain Knowledge (CS/IT): 50 marks; Quantitative Aptitude: 20 marks; Logical Reasoning: 15 marks; English Language: 15 marks. Marking: +1 for correct, −0.25 for incorrect.
- Selection Process:
- CBT Score (85% weightage) + Group Discussion/Group Task (5% weightage) + Personal Interview (10% weightage).
- Official Website:
- https://iocl.com
IOCL 2026 Exam Overview
The IOCL Engineer/Officer (Grade A) Recruitment Exam 2026 is conducted by Indian Oil Corporation Limited (IOCL), a Maharatna Central Public Sector Enterprise. This exam serves as a direct pathway for Computer Science and Information Technology graduates to secure executive-level roles without relying on GATE scores. Selected officers oversee and support critical IT operations, ERP systems, digital infrastructure, analytics, cybersecurity, and automation across IOCL’s nationwide refinery, pipeline, and marketing divisions.
What Is IOCL Recruitment 2026?
It is a nationwide competitive recruitment drive consisting of a Computer-Based Test (CBT) followed by a Group Discussion (GD) / Group Task (GT) and a Personal Interview (PI). The exam evaluates both technical proficiency in Computer Science & IT engineering as well as non-technical capabilities through Quantitative Aptitude, Logical Reasoning, and English Language components. Successful candidates join IOCL as Grade-A Officers with an attractive initial Basic Pay of ₹50,000/month (Pay Scale: ₹50,000–₹1,60,000) and an approximate annual CTC of ₹17.7 Lakhs.
IOCL 2026 Exam Dates
Along with the notification, Indian Oil Corporation Limited (IOCL) releases the official IOCL 2026 exam date schedule, covering all major events from the start of online registration to the conduct of the CBT exam and personal interview rounds.
| Particular | Details | |
| Newspaper Advertisement Release | 11th August 2026 | |
| IOCL Online Application Portal Activation | 12th August 2026 (Tentative) | |
| Detailed Advertisement Release on Website | 14th August 2026 | |
| IOCL Last Date to Register Online | 31st August 2026 (Tentative) | |
| IOCL Admit Card Release Date | To be announced | |
| IOCL Computer-Based Test (CBT) Date | 24th September 2026 (Tentative) | |
| Availability of CBT Answer Key / Response Sheet | To be announced | |
| IOCL CBT Result Announcement | To be announced | |
| Group Discussion (GD) & Group Task (GT) Dates | To be announced | |
| Personal Interview (PI) Schedule | To be announced | |
| Final Merit List & Offer Letter Release | To be announced |
IOCL Application Form 2026
The IOCL CS & IT Application Form 2026 is released online by Indian Oil Corporation Limited (IOCL) on its official careers portal. Candidates aiming for Engineer/Officer (Grade A) positions in Computer Science & Information Technology must register, fill in their personal and academic details, upload required documents, and submit the form prior to the closing deadline.
Applications submitted after the deadline or containing incomplete details will be rejected without further notice. Candidates should carefully verify all information before final submission.
How to Fill the IOCL CS & IT Application Form 2026
The IOCL Engineer/Officer 2026 registration process is conducted entirely online. Below is a step-by-step overview of how candidates can successfully apply:
Step 1: Online Registration on IOCL Portal
Candidates must begin by registering on the official portal (iocl.com / ioclapply.com) using a valid email ID and mobile number active for at least one year. Upon successful registration, an Application Number and Password will be generated for future logins.
Step 2: Fill the IOCL 2026 Application Form
After logging in, candidates must complete the detailed application form with:
- Personal Details (Name, DOB, Category, Parentage, ID Proof details)
- Academic Qualifications (BE/B.Tech CS/IT degree details, marks percentage, passing year)
- Exam City Preferences (Choice of CBT exam centres)
Step 3: Upload Required Documents
Applicants must upload scanned copies of all required documents adhering strictly to the prescribed format and size specifications:
- Recent Passport-size Photograph (Color photograph with clear background)
- Scanned Signature (In black/blue ink)
- Educational Certificates & Marksheets (10th standard certificate for DOB proof, B.E./B.Tech consolidated degree)
- Caste / Category Certificate (EWS / OBC-NCL / SC / ST / PwBD certificates in GoI format, if applicable)
Step 4: Pay the Application Fee
Pay the required non-refundable application fee online via Credit/Debit Card, Net Banking, or UPI payment gateways. Exempted candidates (SC/ST/PwBD) can skip to final submission.
Step 5: Final Preview & Submission
Review all fields using the Form Preview feature to ensure accuracy, then click Submit. Save and print a copy of the completed application form and fee receipt for future recruitment stages.
IOCL Eligibility Criteria 2026
The IOCL eligibility criteria 2026 define who can apply for the Engineer/Officer (Grade A) recruitment in Computer Science & Information Technology. Parameters such as educational qualification, age limit, aggregate percentage, and nationality dictate eligibility. Candidates planning to appear for the IOCL CS & IT exam must carefully review these requirements before submitting their application form on the official careers portal.
As per the recruitment framework followed by Indian Oil Corporation Limited, candidates who have completed or are in their final year of a recognized full-time regular degree in Engineering/Technology (BE/B.Tech) are eligible to apply.
Candidates holding dual or integrated degrees (BE/B.Tech + ME/M.Tech) are also eligible, provided their core qualifying degree meets the specific branch requirements set by IOCL. Applicants are strongly advised to go through the detailed IOCL 2026 eligibility notification carefully, as conditions regarding aggregate cutoff marks and age relaxations vary across categories.
IOCL Eligibility Criteria 2026: Nationality
- Nationality is a key component of the IOCL eligibility framework.
- Only Indian nationals are eligible to apply for the IOCL Engineer/Officer (Grade A) positions.
- Foreign nationals or candidates holding non-Indian citizenship are not eligible for this recruitment drive.
IOCL Eligibility Criteria 2026: Educational Qualification
- Degree: Candidates must possess a full-time regular B.E. / B.Tech / Equivalent degree in Computer Science Engineering, Information Technology, or permitted allied branches from an AICTE/UGC-recognized university or institute.
- Ineligible Qualifications: Qualifications obtained through distance learning, correspondence, part-time courses, or online modes are not eligible. Master of Computer Applications (MCA) and unapproved interdisciplinary degrees are also strictly ineligible.
- Minimum Aggregate Marks: General / EWS / OBC-NCL: Minimum 65% aggregate marks in the qualifying degree.
- SC / ST / PwBD: Minimum 55% aggregate marks in the qualifying degree.
Final Year Students: Candidates in their final year of engineering can apply, provided they produce their final degree/marksheet meeting the required aggregate percentage before the specified document submission cutoff date.
IOCL Eligibility Criteria 2026: Age Limit & Relaxations
- Upper Age Limit: The maximum age limit is 26 years for General and EWS category candidates.
- Age Relaxations: Upper age relaxations are granted as per Government of India directives: OBC (Non-Creamy Layer): Relaxed by 3 years (up to 29 years).
- SC / ST: Relaxed by 5 years (up to 31 years).
- PwBD (Persons with Benchmark Disabilities): Relaxed by 10 years (up to 36 years for General/EWS).
- Ex-Servicemen: As per extant Government of India rules.
IOCL Eligibility Criteria 2026: Work Experience
- No Prior Work Experience Required: Fresh engineering graduates are fully eligible to apply for the Engineer/Officer (Grade A) post. Prior professional experience is not mandatory.
IOCL Exam Pattern 2026
The IOCL Exam Pattern 2026 details the structure, marking scheme, question distribution, and time duration for the Computer-Based Test (CBT) conducted by Indian Oil Corporation Limited. Understanding the exam pattern helps candidates strategically manage their time and prioritize high-weightage sections during preparation.
The selection process comprises a multi-stage evaluation where performance in the CBT carries the primary weightage for shortlisting to the subsequent interview stages.
IOCL CBT 2026 Question Paper Structure
The Computer-Based Test is an objective-type online examination consisting of two main parts: Technical (Domain Knowledge) and General Aptitude.
| Parameter | Details |
| Exam Mode | Computer-Based Test (CBT) |
| Medium of Exam | English |
| Exam Duration | 150 Minutes (2 Hours 30 Minutes) |
| Total Number of Questions | 100 Questions |
| Total Marks | 100 Marks |
| Question Type | Multiple Choice Questions (MCQs) |
| Marking Scheme | $+1$ mark for every correct answer |
| Negative Marking | $-0.25$ mark for every incorrect answer |
Section-Wise Question Distribution & Weightage
The test evaluates both core technical competence in Computer Science & Information Technology and general aptitude skills.
| Section | Subject / Area | Number of Questions | Total Marks | Section Duration |
| Section 1 | Domain Knowledge (CS & IT) | 50 | 50 | Composite 150 Minutes |
| Section 2 | Quantitative Aptitude | 20 | 20 | Composite 150 Minutes |
| Section 3 | Logical Reasoning | 15 | 15 | Composite 150 Minutes |
| Section 4 | English Language | 15 | 15 | Composite 150 Minutes |
| Total | 100 | 100 |
IOCL Syllabus 2026
The IOCL CS & IT Syllabus 2026 outlines the comprehensive topics assessed in the Computer-Based Test (CBT). The question paper is divided into two major sections: Technical / Domain Knowledge (Computer Science & IT) and General Aptitude.
While the technical section heavily aligns with core GATE Computer Science subjects, it also features PSU-specific extended subjects such as Software Engineering, Web Technologies, and Cloud Computing.
1. Technical Section Syllabus (Domain Knowledge - CS & IT)
The domain knowledge section comprises 50 questions (50 marks) evaluating fundamental principles, analytical abilities, and application concepts across key computer science subjects:
| Subject | Detailed Syllabus Coverage |
| Engineering Mathematics | Propositional and first-order logic; sets, relations, functions, partial orders, lattices, groups; graph connectivity, matching, coloring; combinatorics & recurrence relations; matrices, determinants, systems of linear equations, eigenvalues/eigenvectors; calculus (limits, continuity, integration); probability distributions, conditional probability, Bayes’ theorem. |
| Digital Logic | Boolean algebra, logic gates, K-maps, combinational and sequential circuits, multiplexers, decoders, encoders, adders, flip-flops, registers, counters, number systems, and floating-point arithmetic. |
| Computer Organization & Architecture | Machine instructions & addressing modes, ALU, datapath and control unit, instruction pipelining and hazards, memory hierarchy, cache mapping, main and secondary memory, interrupts, DMA, and I/O interfacing. |
| Programming & Data Structures | C programming language (data types, control statements, functions, recursion, pointers, structures, dynamic memory allocation); Arrays, strings, stacks, queues, linked lists, trees, binary search trees, heaps, and graphs. |
| Algorithms | Asymptotic time & space complexity, recurrence relations; searching, sorting, hashing; divide-and-conquer, greedy algorithms, dynamic programming; BFS/DFS, minimum spanning trees, shortest-path algorithms. |
| Theory of Computation | Regular expressions, DFA, NFA, context-free grammars, parse trees, pushdown automata, pumping lemma, Turing machines, decidability, undecidability, and reductions. |
| Compiler Design | Compiler phases, lexical analysis, tokenization, top-down and bottom-up parsing, syntax-directed translation, symbol tables, runtime environments, intermediate code generation, and code optimization. |
| Operating Systems | System calls, processes and threads, CPU scheduling, inter-process communication, concurrency and synchronization, semaphores, deadlocks, paging, segmentation, virtual memory, file systems, and disk management. |
| Database Management Systems | ER model, relational model, keys, relational algebra, SQL (joins, subqueries, aggregation), functional dependencies, normalization (1NF to BCNF), indexing (B/B+ trees), transactions, concurrency control, and recovery. |
| Computer Networks | OSI & TCP/IP models, packet/circuit switching, framing & error detection, MAC protocols, Ethernet, routing algorithms, IPv4/IPv6, subnetting, CIDR, ARP, DHCP, ICMP, TCP/UDP sockets, flow & congestion control, DNS, HTTP, and FTP. |
| Extended PSU Topics (~10–15%) | Object-Oriented Programming (C++/Java/Python concepts), Software Engineering & Testing methodologies, Web Technologies & APIs, Cybersecurity & Cryptography basics, Cloud Computing models, and AI/ML fundamentals. |
2. General Aptitude Syllabus
The general aptitude section accounts for 50 questions (50 marks) spread across Quantitative Aptitude, Logical Reasoning, and English Language:
| Section | Expected Questions | Syllabus Coverage |
| Quantitative Aptitude | 20 | Data Interpretation (graphs, tables, pie charts), ratios, percentages, powers, exponents, logarithms, permutations & combinations, series, mensuration, geometry, probability, and elementary statistics. |
| Logical Reasoning | 15 | Deductive and inductive reasoning, analogies, numerical relations, spatial transformations (rotation, mirroring, scaling), assembling patterns, paper folding/cutting, and 2D/3D visual puzzles. |
| English Language | 15 | Basic English grammar, vocabulary in context, synonyms and antonyms, idioms & phrases, reading comprehension, error spotting, sentence completion, and narrative sequencing. |
IOCL Admit Card 2026
The IOCL CS & IT Admit Card 2026 (also referred to as the Call Letter) will be issued online by Indian Oil Corporation Limited approximately 10 to 14 days prior to the Computer-Based Test (CBT) date. Registered candidates can download their hall ticket directly from the official portal (iocl.com) using their login credentials.
The admit card is a mandatory document that serves as official authorization to enter the examination centre. IOCL does not send physical admit cards via post; candidates must download and print their call letter online.
IOCL Result 2026
The IOCL Result 2026 for the Computer-Based Test (CBT) will be officially declared by Indian Oil Corporation Limited on its careers portal (iocl.com). Candidates can access their individual scorecards by logging into the application portal using their registration credentials. The published result details section-wise marks, total raw score, normalized score, and qualifying status. Candidates who clear the category-wise cutoffs in the CBT are provisionally shortlisted for the subsequent selection stages, including Document Verification (DV), Group Discussion (GD), Group Task (GT), and the Personal Interview (PI).
Following the completion of the GD/GT and interview rounds, IOCL publishes the Final Merit List compiled according to the prescribed weightage framework—85% for CBT, 5% for GD/GT, and 10% for Personal Interview. Shortlisted candidates featured on the final merit list undergo a Pre-Employment Medical Examination (PEME) to fulfill medical fitness standards prior to receiving their official appointment letters for Grade-A Engineer/Officer positions. Selected candidates are advised to download and retain copies of their scorecard and merit notifications for reference during onboarding procedures.
Courses for IOCL
Frequently Asked Questions
What does the ISRO Scientist/Engineer 'SC' course on KnowledgeGate include?
The ISRO Scientist/Engineer 'SC' (Computer Science) course is built around the written exam syllabus for this recruitment, with lessons structured to match what ISRO tests along with practice on previous year questions (PYQs). It is meant for candidates who want a focused, CS-specific preparation path rather than general engineering revision.
Is there a test series for Coal India Management Trainee, or only a course?
Both are available. The Coal India Management Trainee (Computer Science) Recruitment course covers the syllabus in a structured, exam-oriented way, and there is a separate Coal India Management Trainee (Computer Science) Recruitment Test Series for candidates who specifically want performance-oriented mock practice once they have covered the concepts.
I'm preparing for a PSU exam not related to computer science — is this category for me?
The PSUs category on KnowledgeGate currently focuses on computer science recruitment — specifically ISRO Scientist/Engineer 'SC' and Coal India Management Trainee — so it is aimed at CS candidates preparing for these specific exams rather than PSU recruitment in other engineering branches.
How is preparing for ISRO or Coal India MT different from general GATE preparation?
While there is overlap in core computer science topics, each PSU exam has its own pattern and syllabus emphasis, so the ISRO and Coal India MT courses on KnowledgeGate are structured around each exam's specific written test rather than treating it as a byproduct of GATE preparation. This helps you focus revision and practice on what that particular exam actually asks.
Do these courses include practice questions, or just concept lessons?
The ISRO course includes previous year question (PYQ) practice alongside the syllabus-based lessons, and Coal India MT has its own dedicated test series in addition to the preparation course, so in both cases you get practice material built for the exam pattern rather than lessons alone.
What is KnowledgeGate AI?
KnowledgeGate AI is an AI-powered learning platform designed for Computer Science students preparing for competitive exams, placements, and career growth. The platform combines expert guidance, structured learning paths, practice questions, mock tests, and performance analytics to help learners prepare more effectively.