TCS Technical Interview Questions for Experienced Developers

1. Algorithms & Data Structures

[{"selector":"#anim-ab3ee30d-e6c3-478c-913b-5c585f56d768","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f3f7b4de-9402-4bda-9f04-6a71ed522302","keyframes":{"transform":["translate3d(0px, -372.8716%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-5e9235d7-b30a-49bf-8b41-2bf07db32edb [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(7.8089332971183785%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] 1. Given an array of integers, find the longest increasing subsequence. How would you optimize it? 2. Describe a scenario where you’d use a hash table over a balanced binary tree. Looking for more TCS Interview Questions to Prepare for? Click here

2. Object-Oriented Programming

[{"selector":"#anim-2a079399-5a25-4ee6-b31b-ffddab82e61f [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(7.868525640762189%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-0bf1bf2d-76eb-4125-84a3-a688b7f5e520","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-cf955beb-30e9-4d8f-8d34-9114548dad9f","keyframes":{"transform":["translate3d(0px, -372.8716%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] 1. How does polymorphism benefit code reusability? 2. What is the difference between composition & inheritance? Can you provide examples? Looking for more TCS Interview Questions to Prepare for? Click here

3. Database

[{"selector":"#anim-ee9c6c17-dc05-451e-8f4f-8b45f9d37fc6 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(7.817772522442576%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-215c2e5b-54c9-4b6e-80cd-bd580e584d26","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-70b9adda-685c-4b56-a7bc-048d0f54dbdf","keyframes":{"transform":["translate3d(0px, -372.8716%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] 1. Explain ACID properties. Why are they important in a transactional system? 2. Describe normalization & denormalization. When would you choose one over the other? Looking for more TCS Interview Questions to Prepare for? Click here

4. Design Patterns

[{"selector":"#anim-409196f9-32a1-4381-83aa-8e8ce03d6335 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(12.499999772451451%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-aa2ffb17-3278-41b1-aa6e-e45e89c112b3","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a8edacc2-7414-4496-a246-88286fbd0c1e","keyframes":{"transform":["translate3d(0px, -372.8716%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] 1. How have you used the Singleton design pattern in your previous projects, & what are its drawbacks? 2. Can you explain the difference between MVC & MVVM design patterns? Looking for more TCS Interview Questions to Prepare for? Click here

5. System Design

[{"selector":"#anim-60bb79bf-85e9-4bed-8258-28073ee532f8 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(7.868525640762189%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-f65af344-1026-4b97-bba7-a6fb43a6ed72","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-2ba3379a-719f-4ef1-915c-7e6c1c684b31","keyframes":{"transform":["translate3d(0px, -372.8716%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] 1. Can you design a scalable & fault-tolerant microservices-based system? 2. What strategies would you use to ensure data consistency across distributed systems? Looking for more TCS Interview Questions to Prepare for? Click here

6. Software Development

[{"selector":"#anim-7f8da626-4221-48d5-8894-f964bc745211 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(7.812499744007886%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-a945df76-c205-4693-9a2c-481da4dedb4d","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-ee7adecd-59fb-4e95-891d-2f18a5c6f2ce","keyframes":{"transform":["translate3d(0px, -372.8716%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] 1. Describe the most challenging bug you’ve encountered in your career. 2. How did you debug & resolve it? How do you prioritize technical debt in a mature product? Looking for more TCS Interview Questions to Prepare for? Click here

7. Performance Optimization

[{"selector":"#anim-81c3ab51-7ecd-4a17-8d13-8df85e03ab21 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(7.868525640762189%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-636646ff-c36e-4014-b492-23dfbd6d0a79","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-43438f9a-381d-4d5b-ad92-4720b87f1b45","keyframes":{"transform":["translate3d(0px, -372.8716%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] 1. How do you identify and fix performance bottlenecks in a web application? 2. What are some techniques you have used to optimize database query performance? Looking for more TCS Interview Questions to Prepare for? Click here

8. Frameworks & Technologies

[{"selector":"#anim-7f7ca584-68fc-4073-981a-7dfccbe56431 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(13.360495214439528%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-8ad5d192-d915-412e-a977-21f8926db828","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-877d838b-df0d-4d0d-afd6-ffb876568761","keyframes":{"transform":["translate3d(0px, -372.8716%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] 1. How does Spring MVC & Spring Boot differ? How does Spring Security work? 2. How do you ensure a web application is responsive & compatible across different browsers? Looking for more TCS Interview Questions to Prepare for? Click here

9. DevOps & Continuous Integration

[{"selector":"#anim-fc7919d6-5170-4e72-ab68-d60312ce081b [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(7.812499744007886%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-6a02704e-fd1f-413e-b328-fc5768cc8bd5","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-3c247e9b-b094-450d-be24-2f99e19b2e2f","keyframes":{"transform":["translate3d(0px, -391.70279%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] 1. How do you handle database migrations in a CI/CD pipeline? 2. Describe a situation where you had to troubleshoot a failed deployment. How did you approach it? Looking for more TCS Interview Questions to Prepare for? Click here

10. Security

[{"selector":"#anim-f759dfcb-ba9c-4352-ad7c-b1838e884737","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-ee40a67d-40a0-4c6a-a8ae-763d915a4b6b","keyframes":{"transform":["translate3d(0px, -417.59264%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-86f08467-a8c8-4cd9-81c8-ac438a6f349c [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(7.536764448217098%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] Looking for more TCS Interview Questions to Prepare for? 1. How do you ensure your application is safe from SQL injection attacks? 2. Explain the concept of OAuth 2.0 and its role in API security. Click here

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