TCS Qa Automation Engineer Sdet Interview Questions (2026)

1. 1TCS NQT60 minMedium

   Online qualifier on TCS iON covering numerical/verbal/reasoning ability plus a coding section; the cutoff and score band route candidates to Ninja, Digital, or Prime interviews.

2. 2Technical Round (TR)40 minMedium

   Panel probes CS fundamentals (OOP, DBMS, OS basics), the candidate's final-year or work projects, and one or two simple programs written live; laterals get grilled on their claimed stack.

3. 3Digital/Prime Coding Interview45 minHard

   For Digital and Prime track candidates, a harder round with DSA problems, code optimization, and questions on cloud or newer technologies.

4. 4Managerial Round (MR)30 minMedium

   A senior manager tests composure with scenario and mild stress questions — missed deadlines, disagreement with a lead, willingness to work in any technology or location.

5. 5HR Round25 minEasy

   Discussion of the service agreement, relocation and shift flexibility, salary structure, and background verification documents.

1. Q1

   How would you use Postman/Newman in CI for TCS's subscription billing workflow without making the suite hard to maintain?

   MediumAPI/UI automationPostman/NewmanTCS-specific

   Context:

   TCS subscription billing workflow

   How to answer:

   Use environments, data files, assertions, secret handling, and useful reports. State the test objective, risk, and the user or system behavior being protected. Describe automation scope, data setup, assertions, observability, and CI ownership. Call out tradeoffs, failure modes, and how you would keep the suite maintainable.

2. Q2

   What integration tests would give confidence that TCS's seller onboarding flow works across frontend, backend, and third-party services?

   MediumAPI/UI automationintegration testingTCS-specific

   Context:

   TCS seller onboarding flow

   How to answer:

   Define contracts, mocks, test environments, and rollback-safe checks. State the test objective, risk, and the user or system behavior being protected. Describe automation scope, data setup, assertions, observability, and CI ownership. Call out tradeoffs, failure modes, and how you would keep the suite maintainable.

3. Q3

   Which logs, screenshots, traces, and videos would you collect when automation for TCS's order tracking workflow fails?

   MediumDebugging and test strategylogs/debuggingTCS-specific

   Context:

   TCS order tracking workflow

   How to answer:

   Explain artifacts that help engineers reproduce issues quickly. State the test objective, risk, and the user or system behavior being protected. Describe automation scope, data setup, assertions, observability, and CI ownership. Call out tradeoffs, failure modes, and how you would keep the suite maintainable.

4. Q4

   How would you design a maintainable test automation framework for TCS's order tracking workflow?

   MediumTesting fundamentalstest automation frameworksTCS-specific

   Context:

   TCS order tracking workflow

   How to answer:

   Explain layers, fixtures, reporting, ownership, and when manual checks still matter. State the test objective, risk, and the user or system behavior being protected. Describe automation scope, data setup, assertions, observability, and CI ownership. Call out tradeoffs, failure modes, and how you would keep the suite maintainable.

5. Q5

   Design test cases for TCS's checkout journey. Which equivalence classes, boundary cases, and negative paths matter most?

   MediumTesting fundamentalstest case designTCS-specific

   Context:

   TCS checkout journey

   How to answer:

   Cover risk-based coverage, traceability, and clear expected results. State the test objective, risk, and the user or system behavior being protected. Describe automation scope, data setup, assertions, observability, and CI ownership. Call out tradeoffs, failure modes, and how you would keep the suite maintainable.

6. Q6

   How would you test a REST API endpoint for TCS's login and account recovery flow with authentication, pagination, and error responses?

   MediumAPI/UI automationAPI testingTCS-specific

   Context:

   TCS login and account recovery flow

   How to answer:

   Cover contract checks, status codes, auth failures, paging boundaries, and schema validation. State the test objective, risk, and the user or system behavior being protected. Describe automation scope, data setup, assertions, observability, and CI ownership. Call out tradeoffs, failure modes, and how you would keep the suite maintainable.

7. Q7

   How would you integrate automated tests for TCS's search and filtering experience into CI/CD without slowing every pull request?

   MediumDebugging and test strategyCI/CD test executionTCS-specific

   Context:

   TCS search and filtering experience

   How to answer:

   Use suite tiers, parallelism, ownership, quarantines, and release-blocking criteria. State the test objective, risk, and the user or system behavior being protected. Describe automation scope, data setup, assertions, observability, and CI ownership. Call out tradeoffs, failure modes, and how you would keep the suite maintainable.

8. Q8

   When would you choose Cypress over Playwright or Selenium for TCS's notification preference center, and what tradeoffs would you call out?

   MediumAutomation codingCypressTCS-specific

   Context:

   TCS notification preference center

   How to answer:

   Compare browser coverage, debugging, network control, speed, and CI behavior. State the test objective, risk, and the user or system behavior being protected. Describe automation scope, data setup, assertions, observability, and CI ownership. Call out tradeoffs, failure modes, and how you would keep the suite maintainable.

9. Q9

   Explain Page Object Model for TCS's order tracking workflow. When does it help, and when does it become a bad abstraction?

   MediumAutomation codingPage Object ModelTCS-specific

   Context:

   TCS order tracking workflow

   How to answer:

   Keep page APIs user-intent oriented and avoid hiding assertions or business rules. State the test objective, risk, and the user or system behavior being protected. Describe automation scope, data setup, assertions, observability, and CI ownership. Call out tradeoffs, failure modes, and how you would keep the suite maintainable.

10. Q10

    How would you debug a flaky Playwright test in TCS's seller onboarding flow?

    MediumAutomation codingPlaywrightTCS-specific

    Context:

    TCS seller onboarding flow

    How to answer:

    Discuss locators, waits, traces, retries, isolation, network timing, and deterministic assertions. State the test objective, risk, and the user or system behavior being protected. Describe automation scope, data setup, assertions, observability, and CI ownership. Call out tradeoffs, failure modes, and how you would keep the suite maintainable.

11. Q11

    Design REST API tests for create, update, and delete operations in TCS's search and filtering experience

    MediumAPI/UI automationREST testingTCS-specific

    Context:

    TCS search and filtering experience

    How to answer:

    Check idempotency, validation, permissions, response shape, and audit events. State the test objective, risk, and the user or system behavior being protected. Describe automation scope, data setup, assertions, observability, and CI ownership. Call out tradeoffs, failure modes, and how you would keep the suite maintainable.

12. Q12

    Which SQL checks would you write to validate data created by TCS's notification preference center?

    MediumAPI/UI automationSQL for testingTCS-specific

    Context:

    TCS notification preference center

    How to answer:

    Check records, joins, statuses, timestamps, aggregates, and reconciliation with UI/API results. State the test objective, risk, and the user or system behavior being protected. Describe automation scope, data setup, assertions, observability, and CI ownership. Call out tradeoffs, failure modes, and how you would keep the suite maintainable.

13. Q13

    How would you handle dynamic elements in Selenium or Playwright for TCS's admin approval workflow?

    MediumAutomation codingSeleniumTCS-specific

    Context:

    TCS admin approval workflow

    How to answer:

    Prefer stable locators, explicit waits, app test IDs, and avoiding brittle sleeps. State the test objective, risk, and the user or system behavior being protected. Describe automation scope, data setup, assertions, observability, and CI ownership. Call out tradeoffs, failure modes, and how you would keep the suite maintainable.

14. Q14

    What accessibility checks would you include for TCS's login and account recovery flow?

    MediumDebugging and test strategyaccessibility testing basicsTCS-specific

    Context:

    TCS login and account recovery flow

    How to answer:

    Cover keyboard navigation, labels, focus order, contrast, screen-reader basics, and automated plus manual checks. State the test objective, risk, and the user or system behavior being protected. Describe automation scope, data setup, assertions, observability, and CI ownership. Call out tradeoffs, failure modes, and how you would keep the suite maintainable.

15. Q15

    Write the structure of a high-quality bug report for a failure in TCS's seller onboarding flow

    MediumDebugging and test strategybug reportingTCS-specific

    Context:

    TCS seller onboarding flow

    How to answer:

    Include environment, steps, expected versus actual, evidence, severity, and business impact. State the test objective, risk, and the user or system behavior being protected. Describe automation scope, data setup, assertions, observability, and CI ownership. Call out tradeoffs, failure modes, and how you would keep the suite maintainable.

Practice these with instant AI feedback in a live mock interview → Start a TCS Qa Automation Engineer Sdet mock

Clear the NQT; revise programming fundamentals and your projects; prepare HR questions

Other roles at TCS

Qa Automation Engineer Sdet interviews at other companies