L&T Diploma Engineer Trainee (DET) 2026 – Complete Guide

L&T Diploma Engineer Trainee (DET) 2026 – Application Form Details (Step-by-Step Guide)

Why L&T DET 2026 Is a Golden Opportunity 

If you are a final-year diploma engineering student dreaming of starting your career with one of India’s most trusted engineering giants, Larsen & Toubro (L&T), then Diploma Engineer Trainee (DET) 2026 could be your breakthrough opportunity.

L&T is known for its mega infrastructure projects, global presence, job stability, and strong career growth. The DET program offers structured on-the-job training, attractive CTC, and PAN India exposure, making it one of the most sought-after diploma jobs in India.

This complete guide will help you understand eligibility, branches, salary, age limit, training details, and FAQs, all in one place.


About L&T Diploma Engineer Trainee (DET) Program

ParameterDetails
OrganizationLarsen & Toubro (L&T)
Post NameDiploma Engineer Trainee (DET)
Batch2026
Job TypeFull-time
Training Duration12 Months
Work LocationPAN India
Mode of TrainingOn-the-Job Training

L&T DET 2026 – Branch-Wise Eligibility 

L&T is hiring final-year diploma students from the following engineering streams:

Eligible Diploma Branches
Architecture
Automobile Engineering
Chemical Engineering
Civil Engineering
Computer Science & IT
Electrical & Electronics Engineering
Electronics & Communication Engineering
Electronics & Instrumentation
Instrumentation & Control
Mechanical Engineering
Mechatronics
Environmental Engineering
Environmental Health & Safety
Industrial Safety
Fire Safety
Mining
Survey

Note: Only full-time diploma courses are accepted.


Educational Qualification (Very Important)

CriteriaRequirement
Diploma Duration3 Years / 6 Semesters
ModeFull-Time Only
Minimum Marks60% Aggregate
Diploma CompletionOn or before 30th June 2026
Sandwich Course❌ Not Accepted
Part-Time / Correspondence❌ Not Eligible

✔ Candidates with any Graduation degree (Engineering/Science/Arts) are NOT eligible, even if done before or after diploma.


Backlog / Arrear Rules (Strict Policy)

ConditionStatus
Any Past Backlog❌ Not Allowed
Any Live Backlog❌ Not Allowed
First Attempt Clearance✅ Mandatory

✔ Even one subject not cleared in the first attempt is considered a backlog.


Age Limit for L&T DET 2026

CriteriaDetails
Minimum DOB1st July 2004
Maximum DOB30th June 2008
Age Relaxation❌ Not Mentioned

Both dates inclusive, strictly as per official notification.


Nationality & Medical Fitness

ParameterRequirement
NationalityIndian Only
Foreign Nationals❌ Not Eligible
Medical FitnessMandatory (L&T CMO Guidelines)

L&T DET 2026 Salary

Posting TypeCTC Per Annum
Office-Based Posting₹2,50,000
Project Site Posting₹2,97,000

Project site postings offer higher compensation due to field exposure and allowances.


Training Period Details

AspectInformation
Training Duration12 Months
Training TypeOn-the-Job
StartingFrom Date of Joining
ObjectiveSkill Development + Industry Exposure

After successful training, candidates may be absorbed based on performance and business requirements.

Section 1: Basic Details (Personal Information)

Candidates ko sabse pehle apni personal details accurately fill karni hoti hain, jaise ki Aadhaar, DOB, mobile number, etc.

Basic Details – Required Fields

Field NameDescription / Instructions
Upload PhotoJPEG / PNG format, Max size: 2 MB
Name (as per Aadhaar)Aadhaar card ke exactly same spelling
Aadhaar Number12-digit valid Aadhaar number
Email IDActive email ID (verification required)
Mobile NumberActive mobile number (OTP verification)
Date of BirthDD-MM-YYYY format
GenderSelect from dropdown
StateCurrent residential state
DistrictCurrent residential district

Important Tip:
Email ID aur mobile number future communication & interview updates ke liye use honge — galat detail na bharein.


Section 2: Education Details (Academic Information)

Is section me aapko apni academic qualifications enter karni hoti hain, jo eligibility check ke liye bahut critical hoti hain.

Academic Details – Field Explanation

Field NameWhat to Enter
10th Marks (%)Percentage obtained in Class 10
12th Marks (%)Percentage obtained in Class 12 (if applicable)
College StateDiploma college ka state
College DistrictDiploma college ka district
College NameOfficial institute name
QualificationDiploma
DisciplineMechanical / Civil / Electrical etc.
Year of Passing2026 (for final-year students)
Diploma Marks (%)Up to 4th/5th Semester or 3rd Year
Number of BacklogsMust be ZERO (0)
College TypeGovernment / Private
Mode of StudyFull-Time only

CGPA Conversion Rule:
Agar marks CGPA me hain, to percentage me convert karke hi enter karein, jaise L&T instructions ke according.

Why Choose L&T DET Program? 

  • Work with India’s top EPC company

  • Exposure to mega infrastructure & industrial projects

  • Structured 12-month paid training

  • Strong foundation for long-term career growth

  • PAN India work exposure

  • Industry-recognized brand value


Frequently Asked Questions (FAQs)

Q1. Can final-year diploma students apply for L&T DET 2026?

✔ Yes, students completing their diploma by 30 June 2026 are eligible.


Q2. Are sandwich diploma courses allowed?

❌ No, sandwich courses are strictly not accepted.


Q3. Is there any relaxation in age limit?

❌ No age relaxation is mentioned in the official notification.


Q4. Can a candidate with graduation apply?

❌ No. Candidates with any graduation degree are not eligible.


Q5. Is posting fixed or transferable?

✔ Posting is PAN India, including project sites and offices.


Important Points to Remember Before Applying

✔ Read eligibility criteria carefully
✔ Ensure zero backlogs
✔ DOB must fall within the specified range
✔ Apply only through official L&T career channels
✔ Keep documents ready for verification


Resume Upload Instructions

ParameterRequirement
File TypePDF / DOC (as allowed)
ContentUpdated resume with education & skills
SizeAs per portal limit

Resume Tip:
Mention:

  • Diploma discipline

  • Technical skills

  • Internship / Industrial training (if any)

Final thoughts: Should You Apply for L&T DET 2026?

If you are a disciplined diploma engineer with strong fundamentals, L&T Diploma Engineer Trainee 2026 is one of the best career-starting opportunities in India. With competitive salary, structured training, and exposure to real-world engineering projects, this program can shape your future in the core engineering industry.

Don’t miss this opportunity. Prepare your documents, meet the eligibility, and apply with confidence.

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