Senior SDET (Software Development Engineer in Test)

Questhiring

Haryana, INFull-timeSeniorPosted Jun 20, 2026

PyTestPostmanREST AssuredJenkinsPythonCI/CD

Best fit for

This role is best for senior QA engineers or SDETs with hands-on experience in REST API testing, Postman / Newman, RestAssured, gRPC / Protobuf open to working from Haryana, IN.

Skills you need for this role

Detected from the job title, description, and tags.

API / backend testing

REST API testing — Almost every QA role now expects you to validate JSON contracts and status codes.
Postman / Newman — Standard tool for API exploration and shareable collections.
RestAssured — Common Java-first API automation library, often paired with TestNG.
gRPC / Protobuf — Backend-heavy teams increasingly ship gRPC — a differentiator on your CV.

CI/CD and DevOps

Jenkins — Legacy CI still widely deployed — expect pipeline-as-code questions.
GitHub Actions — Default CI for teams on GitHub — YAML workflows and matrix builds.
GitLab CI — Common in enterprise stacks that self-host GitLab.

Programming languages

Python — Popular for API testing, data validation, and Playwright/Pytest suites.

Domain & process

Test management (Jira / Zephyr / TestRail) — Process fluency — writing test cases, tracing coverage, and reporting defects.
AI in testing — Employers increasingly ask how you use AI copilots to speed up QA work.

Job description

Responsibilities:

Design and own the end-to-end functional test strategy for the voice runtime covering call ingress, ASR/TTS partners, router and middleware, multi-agent orchestration, tool/API calls, downstream system integrations, and call termination.
Build and maintain integration test suites that exercise the full graph of services, including partner APIs (ElevenLabs, Decagon), internal microservices, queues/streams, databases, and downstream business systems.
Define and enforce environment readiness: dev, staging, UAT, pre-prod, and prod. Build environment health checks, configuration drift detection, and smoke tests that gate every deploy.
Own production sanity testing synthetic call flows, heartbeat checks, post-deploy validations, and the runbooks the on-call team uses to confirm a release is healthy.
Build regression suites that catch functional breakage from agent definition changes, prompt updates, SOP edits, tool changes, and routing rule changesnot the answer quality itself, but whether the system still flows correctly end-to-end.
Triage production incidents from a functional / integration angle, convert them into automated regression tests, and feed signal back to the runtime, platform, and partner integration teams.
Partner with the AI engineering and data science teams who own answer quality and evals to ensure their eval pipelines have stable environments to run against and that functional regressions never silently corrupt eval results. Requirements:
5-8 years in functional, integration, and end-to-end QE on complex distributed systems, microservices, queues, third-party API integrations, and multi-environment deployments
.Strong API-level test automation (REST, gRPC, webhooks, event-driven) using tools like REST Assured, pytest, Postman/Newman, Karate, or equivalents
.Demonstrated ownership of environment readiness and release certification; you have been the person who decides whether a release ships
.Experience testing systems with heavy third-party / partner integrations, including handling partner outages, version drift, and contract changes
.Experience testing LLM / GenAI or multi-agent systems required (Must) you have functionally tested systems built on LangGraph, LangChain, AutoGen, CrewAI, or comparable frameworks. You understand multi-agent orchestration, tool/function calls, agent handoffs, and where they fail in integration distinct from where they fail in answer quality
.Strong Python; comfortable with async,streaming, and instrumentation
.CI/CD discipline: GitHub Actions / GitLab CI / Jenkins / similar and a track record of test suites that stay green and fast
.Excellent written communication release reports and go/no-go calls must be unambiguous to engineers and leadership . Nice-to-Haves
: Voice / telephony / contact center system testing backgroun
d.Experience with feature flags, canary deploys, and progressive rollout testin
g.Familiarity with Indic languages and code-mixed (Hindi/English) conversational flow s.

Job highlights

•Role: Senior SDET (Software Development Engineer in Test)
•Company: Questhiring
•Location: Haryana, IN
•Type: Full-time
•Experience: Senior
•Seniority: Senior
•Posted: Jun 20, 2026

Key skills: PyTest · Postman · REST Assured · Jenkins · Python · CI/CD

How to prepare for this interview

A 5-step prep plan tailored to this job's stack.

1Refresh at least one automation framework (Selenium or Playwright) end-to-end — the interview will drill into it. Selenium interview questions →
2Read through the general QA/SDET interview prep guide to refresh core testing concepts. Job Interview Prep →
3Practice API-testing scenarios — auth flows, contract validation, and running collections in CI. API testing Q&A →
4Run a senior-level mock interview covering system design for test frameworks and CI strategy. AI Mock Interview →
5Run your CV through the ATS review so it clears keyword filters for this role before you apply. Resume ATS Review →

Likely interview questions for this role

Tuned to the stack we detected on this job.

Q1.How do you design a test suite for a REST API from an OpenAPI spec?
Q2.How do you handle authentication (OAuth / JWT) inside automated API tests?
Q3.How would you run a Postman collection inside a CI pipeline?
Q4.Where do you use AI in your day-to-day QA workflow, and where do you avoid it?
Q5.Walk me through a bug you found that shipped anyway — how did you handle it?