EV, cleantech and mobility
Servotech Charging Infrastructure Lead Interview: Rounds, Questions and Preparation
For Charging Infrastructure Lead roles at companies like Servotech
What the job involves
A Charging Infrastructure Lead at an EV cleantech company plans, designs, and deploys AC and DC charging stations for two-, three-, and four-wheelers, often working with utilities, site hosts, and hardware teams. Day to day you size chargers, coordinate installation and commissioning, troubleshoot OCPP and payment issues, and track utilization and uptime. Freshers typically start by supporting site surveys, load calculations, and vendor coordination before owning small clusters.
Role and technical knowledge
- 1
What is the difference between AC and DC charging for EVs, and when would you recommend each for a site in India?
Cover power levels (3.3-22 kW AC vs 15-240 kW DC), use cases (home/workplace vs highway/fleet), cost, and grid impact. Mention that DC needs high-capacity supply and is better for quick top-ups.
- 2
Explain the key EV charging standards used in India, such as Bharat DC-001, CCS2, and Type 2 AC.
Differentiate connector types, voltage/current limits, and typical vehicles. Note that Bharat DC-001 is common for small cars and three-wheelers, while CCS2 is dominant for cars and buses.
- 3
How do you calculate the electrical load for a charging station with four 60 kW DC chargers and two 22 kW AC chargers?
Show diversity factor, simultaneity, and demand calculation. Mention that not all chargers run at full load at once, and you must size transformer and cabling with margin.
- 4
What is OCPP, and why is it important for a charging network?
Explain it as an open protocol for charger-to-CMS communication. Mention remote start/stop, diagnostics, firmware updates, and interoperability between different charger brands.
Practical scenarios and problem solving
- 5
You are deploying a charger at a mall with limited parking and an old electrical panel. How do you proceed?
Start with a site survey, check available capacity, propose load management or a step-down arrangement, and coordinate with the mall's electrical team. Mention safety and cable routing.
- 6
A charger on your network shows 'unavailable' but the site host says power is fine. How do you troubleshoot?
Outline a logical sequence: check CMS status, OCPP heartbeat, error logs, local breaker, emergency stop, and connector lock. Suggest remote reset before sending a technician.
- 7
How would you plan a charging hub for a fleet of 20 electric three-wheelers that run 80 km per day?
Estimate daily energy need, charger count and type, charging window, and site layout. Mention staggered charging to avoid peak demand and battery health considerations.
- 8
A vendor supplies a charger that fails OCPP integration with your backend. What do you do?
Check protocol version and configuration, involve the vendor's technical team, test with a simulator, and document the issue. Emphasise clear communication and fallback options.
Behavioural and situational questions
- 9
Tell me about a time you had to learn a new technical concept quickly for a project or competition.
Use STAR format, highlight the concept, resources used, and the outcome. Connect it to how you would pick up charging standards or OCPP on the job.
- 10
How would you handle a disagreement with a site electrician who insists on an unsafe wiring practice?
Show respect for experience but prioritise safety and standards. Suggest involving a senior engineer, referring to IS/CEA codes, and documenting the concern.
- 11
Describe a situation where you had to coordinate with multiple people to complete a task.
Pick a college project or internship where you coordinated with teammates, vendors, or faculty. Highlight communication, follow-up, and a clear result.
- 12
This role may require frequent travel to sites, sometimes on short notice. How do you feel about that?
Be honest and positive if you are open to travel. Mention adaptability, willingness to learn from field work, and any constraints clearly.
HR and company fit
- 13
Why do you want to work in EV charging infrastructure, and why our company?
Show genuine interest in cleantech and India's EV growth. Mention the company's work in charging or power electronics without claiming inside knowledge. Align with their fast-growing, hands-on culture.
- 14
Where do you see yourself in three years in this role?
Talk about growing from supporting deployments to leading a region or product line. Show commitment to learning standards, software, and project management.
- 15
What are your salary expectations for this fresher role?
Give a reasonable range based on market research for EV/cleantech freshers in India. Be flexible and mention that learning and growth matter too.
- 16
Do you have any questions for us about the role or the team?
Ask about typical projects, training, or how the team measures charger uptime. Avoid questions only about salary or leave in the first interview.
Ready to try it for real?
Take a timed test or talk through a mock interview for this role, then see your scores.
This is practice material for Charging Infrastructure Lead roles, written with AI. It is not a list of questions Servotech or any other company has asked.