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Apprentice (Various Trades) – ONGC

Ongcapprentices

  • Delhi, Mumbai, Vadodara, Sivasagar, Chennai (Pan India)
  • Rs 15,000 per month
  • Fresher (0-1 Yrs)
  • Posted Today
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About the role

Oil and Natural Gas Corporation Limited (ONGC) is India’s flagship energy major and a Maharatna Central Public Sector Enterprise. With a legacy spanning over six decades, ONGC is the country’s largest producer of crude oil and natural gas, operating across the upstream value chain – from exploration and drilling to production and processing. The corporation’s vision is to fuel the nation’s growth while championing sustainable practices, cutting‑edge technology, and a robust safety culture.

As part of its Skill Building Initiative, ONGC runs a nationwide apprenticeship programme across 24 work centres, offering fresh talent a hands‑on platform to learn industry‑relevant skills under seasoned professionals.

The Apprentice role is designed for recent graduates, diploma holders, and ITI pass-outs who wish to start their career in the oil and gas sector. Apprentices will be posted at one of the designated locations – Delhi, Mumbai, Vadodara, Sivasagar or Chennai – based on merit and availability. Under the mentorship of senior engineers and technicians, apprentices will rotate through core operational units, gaining exposure to drilling operations, pipeline maintenance, instrumentation, safety protocols, and basic project management.

The programme spans 12 months, during which the apprentice receives a monthly stipend, on‑the‑job training, and a certificate of completion that is recognized nationwide.

Key responsibilities include

  • Assisting senior technicians in routine maintenance and inspection of equipment.
  • Supporting drilling and production teams with data collection and basic analysis.
  • Learning and adhering to safety standards, emergency response procedures, and environmental guidelines.
  • Participating in daily briefings, reporting observations, and suggesting process improvements.
  • Conducting basic troubleshooting of mechanical and electrical systems under supervision.
  • Maintaining accurate logs of work performed, materials used, and time spent.
  • Helping in the preparation of work permits and compliance documentation.
  • Engaging in on‑site training sessions, workshops, and safety drills.
  • Collaborating with cross‑functional teams to understand the end‑to‑end workflow of oil and gas operations.
  • Completing periodic assessments and presenting learning outcomes to mentors.

The technical stack is practical rather than software‑centric, focusing on tools such as hand‑held diagnostic devices, basic PLC interfaces, MS Office for reporting, and industry‑standard safety equipment. Growth path for apprentices is clearly defined – high performers may be offered a Technician position or be considered for entry‑level engineering roles after successfully clearing the internal assessment and meeting eligibility criteria. The apprenticeship experience also enhances employability across the broader energy sector, given ONGC’s reputation for rigorous training and adherence to global standards.

Why join ONGC as an apprentice? You will be part of a prestigious organization that values skill development, offers exposure to large‑scale projects, and provides a structured learning environment. The programme not only equips you with technical know‑how but also instills a safety‑first mindset, teamwork, and problem‑solving abilities that are highly prized in the industry.

Moreover, the stipend, certification, and potential for future employment make this an attractive launchpad for a long‑term career in energy.

Eligibility & process

Who can apply

• Must have passed an ITI, Diploma or Degree in a trade/discipline relevant to ONGC operations (e.g., Mechanical, Electrical, Instrumentation, Civil, Petroleum, etc.). • Age: Must not have completed more than three years after passing the qualifying examination as on 29‑Nov‑2026. • No prior apprenticeship under the Apprentices Act, 1961 and not currently pursuing any apprenticeship. • Candidates with more than one year of post‑qualification work experience are ineligible for Technician Apprentice positions. • Must belong to an eligible district as specified in Annexure‑I of the official notification. • Must possess a valid NAPS or NATS registration (as applicable to the trade). • Candidates must provide original certificates for SSLC/SSC, HSC, qualifying diploma/degree, caste/category (if applicable), PwBD (if applicable), and identity proof. • Must be medically fit as per the Apprentices Act, 1961. • All eligibility criteria must be verified during document verification; any discrepancy leads to disqualification.

Skills & stack

Basic Technical Knowledge Safety Awareness Aptitude For Engineering Trades Basic Computer Literacy

Selection process

  1. Round 1: Application screening and eligibility verification on NAPS/NATS portals
  2. Round 2: Preparation of provisional merit list based on qualifying exam marks
  3. Round 3: Shortlisting for document verification
  4. Round 4: Document verification and final merit list preparation
  5. Final Offer: Engagement formalities and contract signing

Prep kit

20 resources
Study material 4
Company-specific guides 4
Likely coding questions 4
Round-wise strategy 4
Round 1: Online Assessment (OA) Aptitude, Quantitative Logic & 2 Coding Problems Focus on accuracy and speed. Practice arrays, strings, and standard arithmetic puzzles.
Round 2: Technical Interview 1 Core Tech Stack (Basic Technical Knowledge, Safety Awareness, Aptitude For Engineering Trades, Basic Computer Literacy) & Live Code Tracing Explain your thought process aloud. Analyze time & space complexities before coding.
Round 3: System Design & Problem Solving Database Schemas, APIs & Architecture Basics Clarify edge cases, diagram schemas cleanly, and discuss scalability trade-offs.
Round 4: HR & Cultural Fit Discussion Ongcapprentices Core Values, Learning Agility & Offer Terms Demonstrate passion, strong communication, and readiness for full-time collaboration.
Technical questions 5
Explain OOP (Object-Oriented Programming) principles with real-world examples in Basic Technical Knowledge. Answer
Model answer: 1. Encapsulation (data hiding via private fields/getters). 2. Abstraction (hiding implementation complexity). 3. Inheritance (code reusability). 4. Polymorphism (method overriding/overloading).
What is the time and space complexity of QuickSort vs MergeSort? Answer
Model answer: QuickSort: Average O(N log N) time, O(log N) space. Worst O(N^2). MergeSort: Guaranteed O(N log N) time, but requires O(N) auxiliary space.
Explain the difference between SQL Indexing (B-Tree vs Hash) and when not to use an index. Answer
Model answer: Indexes speed up SELECT queries via B-Trees. However, they slow down INSERT, UPDATE, and DELETE operations because indexes must be updated on disk. Avoid on low-cardinality columns (e.g., boolean flags).
What happens under the hood when you enter a URL in a browser? Answer
Model answer: 1. DNS lookup (resolves IP). 2. TCP 3-way handshake (SYN, SYN-ACK, ACK). 3. TLS negotiation for HTTPS. 4. HTTP GET request sent. 5. Server responds with HTML/CSS/JS. 6. Browser renders DOM & CSSOM tree.
What is the difference between REST and GraphQL APIs? Answer
Model answer: REST uses multiple fixed endpoints with possible over/under-fetching. GraphQL uses a single endpoint allowing clients to query exact fields in a single request.
Behavioural & HR questions 3
Why do you want to join Ongcapprentices as a Apprentice (Various Trades) – ONGC?
Highlight Ongcapprentices's market reputation, recent tech innovations, and how your skills in Basic Technical Knowledge directly solve their team's objectives.
Describe a challenging bug or academic project roadblock and how you resolved it.
Use the STAR method: Situation (project context), Task (what needed solving), Action (specific tools/logic applied), Result (quantifiable positive outcome).
How do you handle strict deadlines or sudden scope changes?
Explain your prioritization strategy, proactive communication with mentors/peers, and agile mindset.
Ongcapprentices Rs 15,000 per month
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