Career Questions 16 total
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1What is the difference between a product company and a service company for developers?
**Service Company (IT Services / Outsourcing):**
TCS, Infosys, Wipro, HCL, Cognizant
- You work on clients' projects
- Technology stack deci...
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2How to answer 'Tell me about yourself' in a tech interview?
This is always the first question — most candidates waste it. Here's the formula:
**Structure: Present → Past → Future**
*Present:* ...
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3How to prepare for a Java developer interview?
Java interviews at product companies cover 4 areas. Here's exactly what to prepare:
**1. Core Java (always asked):**
- OOPs: inheritance, p...
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4What skills are needed to become a DevOps engineer in 2025?
DevOps engineer is one of the highest-paying roles in tech. Here's the complete skill map:
**Foundation (must-have):**
- Linux command line...
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5What is the salary of a full stack developer in India 2025?
Full stack developer salaries in India (2025):
**By experience:**
- Fresher (0-1 year): ₹3.5 – ₹7 LPA
- Junior (1-3 years): ₹7 – ...
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6What certifications should I get to become an ethical hacker?
Here's the recommended certification path for ethical hacking:
**Beginner (Start here):**
- **CompTIA Security+** — foundational security...
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7How to pass the AWS Solutions Architect Associate exam?
The AWS SAA-C03 exam has 65 questions in 130 minutes. Here's the proven study plan:
**6-Week Plan:**
Week 1-2: Core services
- EC2 (instan...
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8How to prepare for a data science interview in 30 days?
**Week 1 — Statistics & Probability**
- Probability distributions, Bayes theorem
- Hypothesis testing, p-values
- A/B testing basics
**We...
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9Most common system design interview questions for software engineers
Top system design questions asked at product companies:
1. **Design a URL shortener** (Bit.ly)
2. **Design Twitter/Instagram** (social medi...
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10Is Python enough to get a data science job?
Python alone is NOT enough, but it's the most important skill.
You need:
1. **Python** (Pandas, NumPy, Scikit-learn, Matplotlib)
2. **SQL**...
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11How many months does it take to learn full stack development?
Timeline to become job-ready in full stack:
**With dedicated learning (6-8 hours/day):**
- HTML/CSS/JS basics: 1 month
- React (frontend): ...
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12What is the average salary for a data science fresher in India 2025?
For freshers in India (2025 data):
- **Entry level (0-1 year):** ₹3.5 – ₹7 LPA
- **Junior Data Scientist (1-3 years):** ₹6 – ₹1...
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13How to get a data science job with no experience?
Getting your first data science job without experience is challenging but very doable. Here's a proven roadmap:
1. **Build skills** — Pyt...
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14What are the best free resources to learn Machine Learning in 2026?
I want to start learning Machine Learning but have a limited budget. What are the best free courses, YouTube channels, and books to learn ML...
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15How to get a job in AI with no prior experience in India?
I am a fresher with a B.Com background. I want to switch to AI field. Is it possible? What skills should I learn first? What is the salary f...
