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BTSC Bihar Junior Engineer Recruitment 2025 : Bihar Technical Service Commission (BTSC) has extended the online application for 2809 Junior Engineer (Civil, Mechanical, Electrical) posts. Eligible Diploma holders can now apply from 22nd January to 30th January 2026. Check full details on eligibility, salary, and selection process.
BTSC Bihar Junior Engineer Recruitment 2025 : Important Dates
| Event | Date |
| Notification Release | 12th December 2025 |
| Previous Last Date to Apply | 12th January 2026 |
| Extended Application Period | 22.01.2026 to 30.01.2026 |
| Last Date for Fee Payment | 30th January 2026 |
| Exam Date | To be notified soon |
BTSC Bihar Junior Engineer Recruitment 2025 : Eligibility & Age Limit (As of 01.08.2025)
| Criteria | Details |
| Educational Qualification | 3-year Diploma in Civil, Mechanical, or Electrical Engineering from a recognized institute. |
| Minimum Age | 18 Years |
| Maximum Age (UR – Male) | 37 Years |
| Maximum Age (UR – Female/OBC/EBC) | 40 Years |
| Maximum Age (SC/ST) | 42 Years |
BTSC Bihar Junior Engineer Recruitment 2025 : Vacancy Details
| Post Name | Total Vacancies |
| Junior Engineer (Civil) | 2653 |
| Junior Engineer (Mechanical) | 70 |
| Junior Engineer (Electrical) | 86 |
| Total | 2809 |
BTSC Bihar Junior Engineer Recruitment 2025 : Selection Process & Application Fee
| Stage | Details |
| Stage 1: Written Exam (CBT) | 75% Weightage (100 Marks). |
| Stage 2: Work Experience | 25% Weightage (Max 25 Marks for 5 years experience). |
| Final Steps | Document Verification & Medical Examination. |
| General/OBC/EWS Fee | ₹100 |
| SC/ST/PWD (Bihar) Fee | ₹100 |
BTSC Bihar Junior Engineer Recruitment 2025 : Salary Structure
| Component | Amount |
| Basic Pay Scale | ₹9,300 – ₹34,800 |
| Grade Pay | ₹4,600 (Level 7 Pay Matrix) |
| Total Starting Salary | Approx. ₹35,400 + Allowances |
BTSC Bihar Junior Engineer Recruitment 2025 : How to Apply (Step-by-Step)
Visit Official Site: Go to btsc.bihar.gov.in.
Registration: Click on “Apply Online” for Advt. No. 28/2025, 29/2025, or 30/2025.
Fill Form: Enter personal, educational, and contact details accurately.
Upload Documents: Attach your photograph, signature, and Diploma certificates.
Fee Payment: Pay the application fee via Debit/Credit Card or Net Banking.
Final Submission: Print the application confirmation for future reference.
BTSC Bihar Junior Engineer Recruitment 2025 : Syllabus & Exam Pattern
| Section | Questions | Marks | Topics |
| General Studies | 20 | 20 | Current Affairs, History, Geography, Polity, Science. |
| Technical (Domain) | 80 | 80 | Civil, Mechanical, or Electrical Diploma level subjects. |
| Total | 100 | 100 | Duration: 2 Hours; Negative Marking: 0.25 per wrong answer. |
BTSC Bihar Junior Engineer Recruitment 2025 : BTSC JE Exam Pattern At a Glance
| Feature | Details |
| Mode of Exam | Computer-Based Test (CBT). |
| Language | English & Hindi. |
| Total Marks | 100 Marks (75% weightage for final merit). |
| Negative Marking | 0.25 marks deducted per wrong answer. |
| Duration | 120 Minutes (2 Hours). |
The syllabus for the BTSC Junior Engineer (JE) recruitment for Civil, Mechanical, and Electrical disciplines is designed at the Diploma Level. The exam consists of two parts: General Studies (20%) and Domain Technical Knowledge (80%).
Part 1: General Studies (Common for All Branches)
| Subject | Detailed Topics |
| Current Affairs | National & International events, latest summits, and awards. |
| General Awareness | Indian History (Ancient, Medieval, Modern), Geography (India & Bihar), and Indian Polity. |
| Science & Tech | General Science (Physics, Chemistry, Biology), Recent scientific advancements. |
| Static GK | Sports, Books & Authors, Important Dates, and Indian Culture. |
| Economic Scene | Basics of Indian Economy, Five-year plans, and government schemes. |
Part 2: Domain Engineering Syllabus
1. Junior Engineer (Civil Engineering)
| Topic | Key Sub-Topics |
| Building Materials | Physical & chemical properties, standard tests, timber, paints, and varnishes. |
| Surveying | Principles, chain & compass survey, leveling, contouring, and advanced instruments. |
| Soil Mechanics | Phase diagrams, Atterberg limits, permeability, compaction, and bearing capacity. |
| Hydraulics | Fluid properties, Bernoulli’s theorem, pipe flow, pumps, and turbines. |
| Irrigation Engg. | Crop water requirements, canals, weirs, barrages, and flood control. |
| Structural Engg. | Theory of structures, RCC Design (beams, slabs, columns), and Steel Design. |
2. Junior Engineer (Electrical Engineering)
| Topic | Key Sub-Topics |
| Basic Electrical | Ohm’s Law, AC/DC circuits, network theorems, and circuit analysis. |
| Electrical Machines | Transformers, DC machines, Induction and Synchronous motors. |
| Power Systems | Power generation (Thermal, Hydro, Nuclear), transmission, and protection schemes. |
| Control Systems | Open/Closed-loop systems, transfer functions, and stability analysis. |
| Power Electronics | Rectifiers, inverters, converters, SMPS, and UPS basics. |
| Instrumentation | Electrical measuring instruments, errors, and transducers. |
3. Junior Engineer (Mechanical Engineering)
| Topic | Key Sub-Topics |
| Engg. Mechanics | Laws of motion, force systems, friction, and centroid. |
| Thermodynamics | Laws of thermodynamics, Otto/Diesel/Rankine cycles, and refrigeration. |
| Fluid Mechanics | Fluid properties, Bernoulli’s theorem, flow through pipes, and hydraulic pumps. |
| Theory of Machines | Mechanisms, gears, flywheels, governors, and vibrations. |
| Manufacturing | Casting, welding, machining, and industrial engineering (production planning). |
| Machine Design | Design of shafts, keys, couplings, springs, and bearings. |
BTSC Bihar Junior Engineer Recruitment 2025 : Important Links & Dates
Event | Date /Important Link |
Official Notification | |
Online Application Link | |
Official Website | |
Online Application Start Date (Extended) | January 22, 2026 |
Last Date for Online Application | January 30, 2026 |
Written Examination Date | To be notified soon |
BTSC Bihar Junior Engineer Recruitment 2025 : FAQs & Preparation Tips
Q: Are B.Tech candidates eligible? Yes, B.Tech/B.E. holders can apply, but the minimum qualification is a Diploma.
Q: What is the new last date? The portal reopens on 22.01.2026 and closes on 30.01.2026.
Preparation Tip: Focus 80% of your effort on core technical subjects as they carry the maximum weightage.
Strategy: Solve previous years’ Bihar JE papers to understand the difficulty level and common topics like Building Materials (Civil) or Thermodynamics (Mechanical).
