UPSC IES/ESE 2026 — Engineering Services Exam, Syllabus, Salary & Career in Government Engineering
Complete guide to the UPSC Engineering Services Exam (ESE/IES). Eligibility, three-stage exam pattern, services you can join, salary at all stages, and what a government engineering career looks like.
The Engineering Services Examination (ESE), commonly called IES (Indian Engineering Services), is one of the most prestigious engineering examinations in India. Conducted by UPSC, it selects engineers for Class-1 Gazetted Officer posts in the Government of India. The number of vacancies is small — typically 200–250 per year — which makes the competition intense, but the career outcome is among the best available to an engineering graduate.
What is ESE/IES?
ESE selects engineers for the following services:
| Service | Cadre | Typical Work |
|---|---|---|
| Indian Railway Service of Engineers (IRSE) | Civil | Bridge, track, formation, station design and maintenance |
| Indian Railway Service of Electrical Engineers (IRSEE) | Electrical | Railway traction, signalling, power supply |
| Indian Railway Service of Mechanical Engineers (IRSME) | Mechanical | Rolling stock, workshop, maintenance |
| Indian Railway Service of Signal Engineers (IRSSE) | Electronics/Electrical | Signalling systems, telecom |
| Indian Defence Service of Engineers (IDSE) | Civil | Defence establishments, military construction |
| Central Engineering Service (CES) | Civil | CPWD — Central Public Works Department |
| Central Water Engineering Service (CWES) | Civil | CWC, irrigation, flood management |
| Indian Ordnance Factories Service (IOFS) | Mechanical | Defence manufacturing at ordnance factories |
| Border Roads Engineering Service (BRES) | Civil | BRO — road building in border areas |
| Central Power Engineering Service (CPES) | Electrical | CEA, grid infrastructure |
| Electronics & Telecommunication | Electronics | DoT, BEL-related services |
Eligibility
- Degree: B.E. / B.Tech (or equivalent) in the relevant engineering discipline from a recognised university. Final-year students can also apply — degree must be completed before joining.
- Branches admitted:
- Age: 21 to 30 years. OBC: 33 years. SC/ST: 35 years.
- Nationality: Indian citizen
Exam Pattern — Three Stages
Stage 1: Preliminary Examination (Objective)
| Paper | Type | Marks | Duration |
|---|---|---|---|
| Paper I — General Studies and Engineering Aptitude | Objective (MCQ) | 200 | 2 hours |
| Paper II — Engineering Discipline | Objective (MCQ) | 300 | 3 hours |
Paper II is your core engineering discipline syllabus — Civil, Mechanical, Electrical, or Electronics. The syllabus is broadly B.Tech final year level, heavily weighted on fundamentals rather than advanced topics.
Negative marking: ⅓ mark deducted per wrong answer. Both papers together = 500 marks. Prelims is qualifying to Mains.
Stage 2: Main Examination (Descriptive)
| Paper | Type | Marks | Duration |
|---|---|---|---|
| Paper I — General Studies and Engineering Aptitude | Descriptive | 200 | 3 hours |
| Paper II — Engineering Discipline | Descriptive | 300 | 3 hours |
Mains Paper II is your engineering discipline in descriptive format — derivations, design, analysis, problem-solving. This is where real engineering knowledge is tested. Simply memorising definitions won't work.
Total Mains marks: 500. Combined Prelims + Mains = 500 (UPSC typically normalises).
Stage 3: Personality Test (Interview)
UPSC ESE interview is 200 marks. Unlike IAS, the ESE interview has a technical dimension — board members may ask you technical questions from your engineering discipline in addition to general awareness, current affairs, and personality assessment.
The interview is typically 25–35 minutes. A good board conversation can compensate for a mid-range written score. A poor interview from a very high written scorer can drop the final rank significantly.
Final Merit = Mains marks + Interview marks (200)Service Allocation
Candidates are allocated services based on merit rank, engineering branch, and preference form submitted. Railway services (IRSE, IRSEE etc.) are generally most competitive — top rankers from each discipline fill these first. BRES (Border Roads) and IOFS positions are filled later in the merit order for most branches.
Training After Selection
Selected candidates go through training at relevant training institutes:
- IRSE officers: Training at IRICEN (Indian Railways Institute of Civil Engineering), Pune
- IRSEE: Training at IRIEEN, Nasik
- IRSME: Training at IRIMEE, Jamalpur
- IRSSE: Training at IRISET, Secunderabad
- CPWD officers: Training at NICMAR or CPWD Training Institute
Salary and Pay Structure
IES officers are Group A Gazetted Officers under CDA (Central Dearness Allowance) pay scales — different from PSU pay.
| Stage | Pay Level | Basic Pay | Grade Pay (notional) |
|---|---|---|---|
| Junior Time Scale (JTS) | Level 10 | ₹56,100 – ₹1,77,500 | — |
| Senior Time Scale (STS) | Level 11 | ₹67,700 – ₹2,08,700 | — |
| Junior Administrative Grade (JAG) | Level 12 | ₹78,800 – ₹2,09,200 | — |
| Senior Administrative Grade (SAG) | Level 13 | ₹1,23,100 – ₹2,15,900 | — |
| Higher Administrative Grade (HAG) | Level 14 | ₹1,44,200 – ₹2,18,200 | — |
DA (Dearness Allowance) revises every 6 months and is currently at 55% of basic (varies). HRA depends on city of posting.
Career Trajectory
- JTS → STS: After 4 years of service (time-bound)
- STS → JAG: Competitive selection with DPC after 9–13 years of service
- JAG → SAG: Further DPC, typically 16–20 years
- SAG → HAG: Very selective, 25+ years service, limited posts
Why IES Over PSU Jobs?
Honest comparison:
IES advantages:- Class-1 Gazetted Officer status — administrative and decision-making authority
- Social prestige and respect, particularly in smaller cities and towns
- Genuine impact on national infrastructure
- Exposure to diverse projects at national scale
- Job security identical to IAS/IPS (Group A Central Government)
- Higher starting salary in most cases
- Better retirement corpus (IDA-linked pensions vs NPS for IES officers joining post-2004)
- No geographic hardship posting obligation (though PSUs also transfer)
Check UPSC's official notification for ESE at SarkariNaukriHub — exam dates, syllabus changes, and official PDFs are tracked there every year.