S

Subrat Mandal

DevOps Engineer

Bengaluru, Karnataka, India18 yrs 5 mos experience
Most Likely To SwitchAI ML Practitioner

Key Highlights

  • Led global QA/SDET teams across multiple countries.
  • Achieved 80% reduction in regression cycles.
  • Architected next-gen automation frameworks enhancing stability.
Stackforce AI infers this person is a SaaS Quality Engineering expert with extensive experience in automation and CI/CD.

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Skills

Core Skills

Test AutomationCi/cd & DevopsQuality EngineeringPerformance Engineering

Other Skills

Selenium WebDriverRelease ManagementSoftware Testing Life Cycle (STLC)PostmanRestAssuredTest Automation FrameworksAgile Testing & Shift-Left/Shift-Right TestingQuality ManagementFlaky Test Management & Regression Time ReductionAutomationJavaEngineering ManagementTestRailLeadershipSoftware Testing

About

With 19 years of experience in Quality Engineering, Automation, and CI/CD across high-scale product companies (Gojek, Dream11, Ola, Zendrive, [24]7.ai), I specialize in building AI-driven test engineering platforms that accelerate release velocity, improve stability, and reduce manual effort. Key Achievements - Led and scaled global QA/SDET teams, building structured career frameworks and fostering high-performance engineering cultures. - Led the successful migration of Gojek’s infrastructure—spanning over 1000 microservices—from GCP to Tencent Cloud, ensuring zero production downtime and maintaining uninterrupted release pipelines during the transition. - Re-architected test automation and CI/CD workflows for multi-cloud compatibility, integrating large-scale load testing (using tools like k6 and Gatling) to validate system performance, scalability, and release readiness under peak traffic conditions. - Accelerated release velocity by optimizing test automation, CI/CD, and flaky test management, enabling weekly mobile releases and reducing regression cycles by 80%. - Architected next-gen automation frameworks across web, mobile, API, and microservices, reducing manual testing efforts by 70% and enhancing product stability. - Established CoE/Platforms for automation, performance, and release engineering, driving innovation and best practices across engineering teams. - Partnered with engineering, product, and DevOps teams to integrate shift-left testing, contract testing, and data-driven quality metrics, reducing production defects and improving customer experience. Key Skills: Test Automation: Selenium, WebDriverIO, TestNG, JUnit, Cucumber, Appium, Espresso, XCUITest API Testing: Postman, RestAssured, GraphQL Testing Performance & Reliability Testing: JMeter, Gatling, k6, Chaos Engineering CI/CD & DevOps: Jenkins, GitHub Actions, GitLab CI/CD, Docker, Kubernetes Cloud Platforms: AWS, GCP, Tencent cloud Leadership & Collaboration: QA Strategy, Test Governance, Agile & Scrum, Team Mentoring, Stakeholder Collaboration, Process Improvement, Test metrics & KPI

Experience

18 yrs 5 mos
Total Experience
2 yrs
Average Tenure
4 yrs 10 mos
Current Experience

Goto group

Head of SDET

Jul 2021Present · 4 yrs 10 mos · Bengaluru, Karnataka, India · Hybrid

  • ⁃ Built and scaled a 90+ member global SDET organisation across India, Indonesia, Singapore to drive automation at scale.
  • Led the successful migration of Gojek’s infrastructure—spanning over 1000 microservices—from GCP to Tencent Cloud, ensuring zero production downtime and maintaining uninterrupted release pipelines during the transition.
  • Re-architected test automation and CI/CD workflows for multi-cloud compatibility, integrating large-scale load testing (using tools like k6) to validate system performance, scalability, and release readiness under peak traffic conditions.
  • ⁃ Established Automation Engineering Platform for Automation, Performance, and Release Engineering, ensuring best practices and standardisation across all teams.
  • ⁃ Introduced real-time quality & release dashboards, providing engineering and product leadership with actionable insights to optimise release readiness.
  • ⁃ Led test automation initiatives that cut regression testing time from days to hours, allowing Gojek to shift from bi-weekly to weekly app releases without compromising quality.
  • ⁃ Architected end-to-end CI/CD for mobile apps using BrowserStack cloud lab, automating builds, testing, and deployments to enhance engineer productivity.
  • ⁃ Built an End to End testing framework for seamless API interactions within Gojek’s multi-service Super App ecosystem.
  • ⁃ Designed and deployed a physical device lab with a diverse range of real-world devices to analyse app performance, stability, and launch times across different Android & iOS versions.
  • ⁃ Implemented automated performance benchmarking, measuring app startup time, ANR rates, and memory consumption across flagship and budget devices.
  • ⁃ Helped identify and resolve critical performance bottlenecks, leading to a 30% reduction in app launch time and improved UI responsiveness.
Selenium WebDriverRelease ManagementSoftware Testing Life Cycle (STLC)PostmanRestAssuredTest Automation Frameworks+39

Zendrive

Head of QA

Feb 2021Jul 2021 · 5 mos · Bangalore Urban, Karnataka, India · On-site

  • Led test automation & quality initiatives for AI-powered driver analytics and telematics solutions.
  • Developed end-to-end test automation for telematics-based driver behavior analytics applications.
Software Testing Life Cycle (STLC)RestAssuredTest Automation FrameworksQuality EngineeringAutomationEngineering Management+16

Dream11

Director of SDET | Head of Release Engineering

Jul 2019Feb 2021 · 1 yr 7 mos · Mumbai, Maharashtra, India · On-site

  • Led Test Automation, Performance Engineering, and CI/CD to Ensure Seamless Fantasy Sports Experience for Millions of Users
  • ⁃ Designed and implemented a scalable test automation framework to handle millions of concurrent users during peak IPL and major cricketing tournaments.
  • ⁃ Automated end-to-end functional, API, and UI tests, reducing manual regression time by 80%, enabling faster releases with confidence.
  • ⁃ Integrated parallel test execution and distributed testing to reduce test execution time by 60%, accelerating release cycles.
  • ⁃ Led performance and scalability testing to ensure Dream11’s mobile app could handle massive spikes in traffic during match start times.
  • ⁃ Implemented load testing strategies using Gatling & JMeter, simulating over 5 million concurrent users
  • ⁃ Designed a fully automated CI/CD pipeline using Jenkins, reducing app release cycle time from 3 weeks to 2 weeks
  • ⁃ Encouraged feature flagging using firebase which enables risk-free rollouts and instant rollback mechanisms.
  • ⁃ Drove best practices in mobile automation, performance engineering, and chaos testing, ensuring Dream11’s platform was battle-tested for peak loads.
  • ⁃ Scaled the SDET team from 10 to 45, driving growth and technical excellence across web, mobile, and backend services.
Selenium WebDriverSoftware Testing Life Cycle (STLC)PostmanRestAssuredTest Automation FrameworksQuality Engineering+24

Ola (ani technologies pvt. ltd)

3 roles

Senior Manager - SDET

Apr 2018Jun 2019 · 1 yr 2 mos

  • Led Mobile & Backend Test Automation, Built Device Labs, and Simulated Large-Scale Load Testing for Ola’s Ride-Sharing Ecosystem
  • ✔ Built a Physical Device Lab for Scalable Mobile Testing 📱🔬
  • 🔹 Designed and set up an in-house physical device lab with real Android & iOS devices to replicate diverse network conditions, OS versions, and edge-case scenarios.
  • 🔹 Automated performance benchmarking for app launch times, battery consumption, and GPS accuracy, leading to a 40% reduction in critical crashes during rides.
  • 🔹 Implemented parallel test execution on physical devices, cutting down overall test execution time by 50%.
  • ✔Simulated Large-Scale Load Testing for Peak Ride Demand
  • ✔Conducted manual chaos testing using failure injection mechanisms to simulate real-world ride disruptions.
Selenium WebDriverSoftware Testing Life Cycle (STLC)Test Automation FrameworksQuality EngineeringSelenium TestingFlaky Test Management & Regression Time Reduction+18

Manager-SDET

Promoted

Oct 2016Mar 2018 · 1 yr 5 mos

Selenium WebDriverSoftware Testing Life Cycle (STLC)Test Automation FrameworksQuality EngineeringFlaky Test Management & Regression Time ReductionAutomation+16

SDET III

Oct 2015Sep 2016 · 11 mos

  • ✔ Built a Centralized Automation Framework for Backend & Mobile 🏗️
  • 🔹 Developed a unified automation framework covering mobile (Appium) and backend APIs (RestAssured), standardizing test automation across Ola’s rider & driver apps.
  • 🔹 Increased test coverage by 70% and reduced manual testing effort by 60%, leading to faster, more stable app releases.
  • 🔹 Integrated CI/CD pipelines with automated regression testing, reducing regression cycle time from 2 days to a few hours.
Selenium WebDriverSoftware Testing Life Cycle (STLC)RestAssuredTest Automation FrameworksQuality EngineeringFlaky Test Management & Regression Time Reduction+18

[24]7.ai

Senior SDET

Nov 2014Sep 2015 · 10 mos · Bengaluru Area, India

  • Led the implementation of mobile and desktop chat automation framework using Appium and Selenium WebDriver.
  • Provided daily QA status in scrum meetings and actively participated in sprint planning and review meetings.
  • Conducted bug triage meetings to discuss various bugs with the entire team.
Selenium WebDriverSoftware Testing Life Cycle (STLC)Test Automation FrameworksQuality EngineeringSelenium TestingFlaky Test Management & Regression Time Reduction+14

Verndale

Senior QA Engineer

May 2013Nov 2014 · 1 yr 6 mos · Bengaluru Area, India

  • Conducted functional testing for responsive websites like Orange Lake Resorts, Cardinal Health, and Arbella Insurance.
  • Developed automation frameworks using Selenium and Appium for testing responsive websites and ERS web app.
  • Achieved efficient testing processes resulting in improved website performance and user experience.
Selenium WebDriverSoftware Testing Life Cycle (STLC)Test Automation FrameworksQuality EngineeringSelenium TestingFlaky Test Management & Regression Time Reduction+14

Aricent

Senior Software Engineer (Android Developer)

Apr 2011May 2013 · 2 yrs 1 mo · Bengaluru Area, India

  • Developed Android system applications (Contacts, Calendar, Phone, Settings) for leading OEM Huawei, Softbank-JAPAN, T-Mobile, China Telecom, and China Unicom.
  • Created a simulator for Dual SIM module, reducing device manufacturing time by enabling early development and testing.
  • Collaborated with teams to develop telephony layer on Android for single SIM and Dual SIM devices.
Software Testing Life Cycle (STLC)Test Automation FrameworksQuality EngineeringFlaky Test Management & Regression Time ReductionAutomationTest Automation & Quality Engineering+7

Apostek software llp

Android Developer

Nov 2010Apr 2011 · 5 mos · Bengaluru Area, India · On-site

  • Developed Android application PhotoSniffer and implemented Leaderboard feature for Slot machine game.
  • Created virtual shop for in-game purchases, enhancing user engagement and monetization.
  • Tested and optimized various casual games, contributing to the success of top-selling titles.
Test Automation FrameworksQuality EngineeringTest AutomationSQLMobile TestingTest Design

Robosoft technologies pvt ltd

Quality Control Engineer(Android, BB,iPhone, J2EE apps)

Aug 2007Nov 2010 · 3 yrs 3 mos · Udupi, Karnataka, India · On-site

  • In my role as a Quality Control Engineer at Robosoft Technologies Pvt Ltd, I conducted functional and performance testing for ERP web apps like Bug Tracking and HRMS. I set up complete test environments with MYSQL and JBOSS, and performed Load testing using Jmeter and WAPT to optimize server performance. Developed multiple mobile apps on Android & BlackBerry, including Splash ID and APMEX.
  • Optimized server parameters for peak performance
  • Developed mobile apps on Android & BlackBerry
Load TestingSoftware Testing Life Cycle (STLC)Test Automation FrameworksQuality EngineeringSeleniumAndroid Development+5

Education

Biju Patnaik University of Technology, Odisha

BE — Electronics & Telecommunication Engineering

Jan 2002Jan 2006

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