Senior Mechanic job description
A Senior Mechanic diagnoses and repairs vehicles in an automotive workshop and guides junior mechanics on difficult jobs. The role needs sound hands-on skill, sharp fault finding and care for safety.

Why the role exists
Every workshop depends on a few people who can solve the jobs others cannot. The senior mechanic takes complex repairs, checks the work of juniors and helps the supervisor keep vehicles moving through the bays. In India this person also shows apprentices how to work safely and neatly.
What the person does
- Diagnose engine, transmission, suspension, brake and electrical faults using scan tools, test drives and experience.
- Carry out major repairs and overhauls as per the job card and the manufacturer's service procedure.
- Check the work of junior mechanics and apprentices before the vehicle goes for the final inspection.
- Tell the service adviser early when a job needs extra parts or time, so the customer can be informed.
- Use special tools and torque settings correctly, and return tools to the tool board at the end of the job.
- Keep the bay clean, handle used oil, coolant and old parts as the workshop's waste process directs.
- Take the vehicle for a road test after repair and record the findings on the job card.
- Train juniors on new models, fault codes and safe use of lifts, jacks and power tools.
Skills and tools
- Fault diagnosis on petrol, diesel and, where relevant, hybrid or electric vehicles
- Use of OBD scanners, multimeters, compression testers and other workshop diagnostic tools
- Reading service manuals, wiring diagrams and technical bulletins from the manufacturer
- Correct use of torque wrenches, pullers, presses and specialised tools
- Wheel alignment, brake and suspension work to the standard of the workshop
- Safe working at lifts, with hot components and with vehicle batteries
- Clear job card notes on what was found and what was replaced
- Coaching junior mechanics with patience on the shop floor
Education and experience
Preferred, never a bar: equivalent experience counts.
- ITI or diploma in automobile or mechanical trade preferred, or equivalent experience on the workshop floor
- Several years of workshop experience on the vehicle types the business services is useful
- Manufacturer training or approved dealer technician certification preferred where the brand offers it
- Valid driving licence for road tests; confirm the exact requirements with your own adviser
How the work is judged
- Share of repairs that do not return for the same fault soon after delivery
- Jobs completed within the time allowed on the job card, after allowing for waiting parts
- Quality of the final inspection when the supervisor or quality checker reviews the work
- Safe working habits, tidy bay and correct handling of tools and waste
- Progress of junior mechanics who work under this person
Where the role can lead
- Workshop Supervisor or Team Leader managing a group of mechanics
- Technical specialist or master technician for a brand or a vehicle system
- Service Manager after building adviser and planning skills
Interview questions to ask
Ask every candidate the same questions in the same order and score them against written anchors, so the decision rests on the work and not the impression.
- A car comes back twice with the same engine misfire. How do you go about finding the real cause this time?
- Describe a repair where the customer's complaint and the actual fault were different. What did you do?
- How do you decide when a job needs a specialised tool or a dealer reference before you proceed?
- A junior mechanic has tightened wheel nuts by hand without a torque wrench. What do you tell him or her?
- Which diagnostic tools have you used yourself, and what kinds of faults did they help you find?
- You find a worn part that is not on the job card. How do you handle that with the service adviser?
Hiring tips for this role
- Run a practical test in your own bay: a real fault to find, a torque job and a job card note. Years of experience on a resume do not show diagnostic skill.
- Ask which brands and systems the candidate has worked on. A strong mechanic from commercial vehicles may need time on cars, and the reverse is also true.
- Check attitude to safety. A fast mechanic who skips jack stands or protective gear will cost you more in injuries and rework.
- Do not promote the best mechanic into a team role without checking if he or she can explain and teach. Skill and coaching are different strengths.
Questions about hiring a senior mechanic
A senior mechanic handles complex diagnosis and major repairs, checks juniors' work and trains them. A mechanic usually works on routine jobs under guidance. The title should match responsibility, not only years of service.
A diploma or ITI in an automobile or mechanical trade is useful, but long hands-on experience can be equal. Confirm any certification or licence needs with your own adviser, as they depend on the work and the employer.
Only if trained for it. High-voltage systems carry special risk. Ask for manufacturer training evidence and confirm the safe working rules for your workshop with your own technical or safety adviser.
GullyHR supports permanent hiring. We agree the job description with you, screen candidates against it and support the offer. You run the practical test in your workshop and make the final choice.
Hiring a senior mechanic?
GullyHR runs talent acquisition for permanent roles. We agree the job description with you, find and screen candidates against it, and support the offer through to joining. We recruit permanent employees. We do not supply contract or temporary staff.