What is RDSO and what does a Junior Engineer do there?

RDSO (Research Designs and Standards Organisation) is the technical arm of Indian Railways based in Lucknow. It is responsible for research and development of railway technology, setting technical standards, and testing new equipment. A Junior Engineer at RDSO is involved in applied R&D projects, testing of railway components, preparation of technical specifications, and inspection of products. It is a prestigious posting for engineering graduates interested in railway technology.

What disciplines are eligible for RDSO Junior Engineer?

RDSO recruits Junior Engineers from multiple engineering disciplines including Civil Engineering, Mechanical Engineering, Electrical Engineering, Electronics & Communication Engineering, Computer Science, and Metallurgy. The vacancies and eligible disciplines vary with each recruitment notification. Candidates must hold a B.E./B.Tech. or equivalent degree in the relevant discipline from a recognised university or institution.

What is the pay scale for RDSO Junior Engineer?

RDSO Junior Engineers are placed in 7th CPC Pay Matrix Level 6, with a basic pay of ₹35,400 per month. Including DA, HRA, and other technical allowances, the gross salary is approximately ₹45,000–₹60,000 per month. RDSO also offers Research Allowance and Technical Grade Pay in some categories. Housing, medical, and railway travel facilities are provided as part of the service benefits.

How is RDSO JE different from RRB JE?

RRB JE (Junior Engineer) recruits engineers for field maintenance and operations across railway zones, while RDSO JE recruits for the R&D wing which develops technology and sets standards. RDSO postings are primarily in Lucknow at the central office and are more research-oriented. RRB JE involves field work at various stations and depots across the country. Both are at similar pay levels but offer very different work environments.

What medical standard is required for RDSO Junior Engineer?

RDSO Junior Engineers are required to meet B1 medical standard, which requires distant vision of 6/9 in one eye and 6/12 in the other eye (with or without glasses). Minor colour vision deficiency may be acceptable for certain non-safety-critical posts. The standard is less stringent than A1 required for operational posts, making it accessible to candidates with moderate refractive errors.

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RDSO Junior Engineer Preparation Guide

Research Designs and Standards Organisation (RDSO), Lucknow

Your Complete Preparation Guide for RDSO Junior Engineer 2027 — strategy, study plan, tips & more.

DifficultyHard

Total Marks100

Duration90 min

Start Practising Now →Free Mock Tests

Exam Overview

Mode

Written Test + Document Verification

Frequency

Every 3–5 years

Next Exam Date

2026-04-01

EEligibility Criteria

B.E./B.Tech. in relevant engineering discipline; Age 18–33 years; Medical standard B1

ANumber of Attempts

No restriction within age limit

Study Plan by Subject

Technical Engineering (Civil/Mech/Electrical/Electronics)

Week 1-4: Foundation

Core concepts & basics

Week 5-8: Deep Practice

Advanced problems & revision

Week 9-12: Mock Tests + Revision

Full-length tests & weak-area focus

Refer to official syllabus for complete topic list

General Science

Week 1-4: Foundation

Core concepts & basics

Week 5-8: Deep Practice

Advanced problems & revision

Week 9-12: Mock Tests + Revision

Full-length tests & weak-area focus

Refer to official syllabus for complete topic list

General Intelligence & Reasoning

Week 1-4: Foundation

Core concepts & basics

Week 5-8: Deep Practice

Advanced problems & revision

Week 9-12: Mock Tests + Revision

Full-length tests & weak-area focus

Refer to official syllabus for complete topic list

General Awareness

Week 1-4: Foundation

Core concepts & basics

Week 5-8: Deep Practice

Advanced problems & revision

Week 9-12: Mock Tests + Revision

Full-length tests & weak-area focus

Refer to official syllabus for complete topic list

Expert Preparation Tips

Focus heavily on your core engineering discipline — approximately 60–70% of the paper will be discipline-specific technical questions.

Revise engineering fundamentals from GATE-level material since RDSO exam technical questions are of similar depth.

Do not neglect GK and Reasoning sections as they form the remaining 30–40% and can help you cross the cut-off.

Study railway-specific applications of your engineering discipline — RDSO frequently asks about standards and railway technologies.

Exam Pattern at a Glance

Section	Questions	Marks	Duration (est.)
Technical Engineering (Civil/Mech/Electrical/Electronics)	25	25	23 min
General Science	25	25	23 min
General Intelligence & Reasoning	25	25	23 min
General Awareness	25	25	23 min
Total	100	100	90 min

Important Dates

Registration Opens

2025-12-15

Next Exam Date

2026-04-01

Conducted By

Research Designs and Standards Organisation (RDSO), Lucknow

Frequently Asked Questions

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