Manjeet Singh

DevOps Engineer

Gurgaon, Haryana, India9 yrs 11 mos experience
Most Likely To SwitchHighly Stable

Key Highlights

  • 9+ years of mobile engineering experience
  • Led initiatives improving conversion by 8-10%
  • Maintained 99.9%+ crash-free sessions
Stackforce AI infers this person is a Mobile Engineer specializing in Fintech and E-Commerce with a strong focus on React Native.

Contact

Skills

Core Skills

React NativeMobile TechnologyHybrid & Native Apps

Other Skills

API IntegrationApple pay integrationC#Checkout & Cart FlowsClient App DeliveryClient CollaborationClient Feedback IntegrationCommunicationCross-functional Team LeadershipCross-team CollaborationCross‑Platform MobileData AnalysisE-CommerceEnglishHigh-Level Design

About

I’m a Mobile Engineer with 9+ years of experience, including 7+ years building large-scale React Native applications used by millions of users. At CARS24, I operate as a mobile system owner for revenue-critical journeys, including Checkout, Finance, Loans, and Post-booking flows, supporting high-transaction environments across India, with additional ownership of UAE mobile initiatives. My work focuses on backend-driven UI, system stability, and safe execution of high-risk flows such as payments, KYC, eSign, and loan onboarding. I’ve led initiatives that improved conversion by 8–10%, unlocked ₹25L–₹30L+ monthly revenue, and consistently maintained 99.9%+ crash-free sessions. Beyond feature delivery, I care deeply about system design, release risk management, and scaling engineering teams through clear ownership models, strong contracts, and mentoring.

Experience

Cars24

2 roles

Tech Lead IV

Promoted

Jul 2023Present · 2 yrs 8 mos · On-site

  • 🇦🇪 CARS24 UAE — Mobile Systems Ownership
  • Owned end-to-end mobile engineering and systems execution for CARS24 UAE apps, spanning Consumer, Partner, Driver, Autopilot, and Service Executive products.
  • Architected the UAE Channel Partner platform, enabling real-time dealer auctions, scalable partner onboarding, and robust backend integration.
  • Led delivery planning and release management across multiple product streams, ensuring speed, quality, and stability during market expansion.
  • Designed a modular, WebView-first React Native framework to accelerate new app launches, reduce setup overhead, and enable cross-team code leverage.
  • 🇮🇳 India Consumer App — Checkout & Finance (Revenue-Critical)
  • Owned checkout, financing, and loan journeys, directly impacting conversion, payment attachment, and revenue growth.
  • Integrated KYC (Karza), E-Mandate, E-Sign, Razorpay, and Juspay into a unified purchase experience.
  • Acted as DRI for post-release stability, maintaining 99.9%+ crash-free sessions in high-transaction environments.
  • Partnered closely with backend, risk, and product teams to design backend-driven UI, rollout strategies, and release risk mitigation.
  • 🤝 Partner Ecosystem — Loans24 & Unnati SDK
  • Designed and maintained a standalone React Native SDK (Unnati) to modularize loan flows across partner apps.
  • Accelerated partner onboarding and improved versioning, scalability, and release safety.
  • Collaborated with backend and product teams to define integration contracts and ensure long-term SDK stability.
  • 📈 Org-Level Technical Leadership
  • Championed modular mobile architecture, CI/CD automation, and release hygiene across multiple engineering teams.
  • Mentored engineers on performance optimization, production readiness, and React Native Reanimated adoption.
  • Established technical documentation and cross-team alignment standards to improve velocity and quality.
ProgrammingCross-functional Team LeadershipLow-Level DesignJavaScriptReact NativeMobile Technology+8

Senior Software Engineer

Jun 2019Jul 2023 · 4 yrs 1 mo · On-site

  • 📱 Konnect (C2C Sales) — Mobile Owner
  • Owned end-to-end mobile delivery for the Konnect app, including architecture decisions, core flows, and feature implementation.
  • Led a small team of three developers to deliver the app from scratch, coordinating work, mentoring, and ensuring timely releases.
  • Implemented real-time updates using Firestore’s web API patterns to improve app responsiveness.
  • Adopted wix/react-native-navigation and other performance optimizations for a smoother user experience.
  • 🚗 Consumer App — Checkout & Car Buying Journey
  • Built the checkout journey for car purchases, including slot selection for home or hub visits, payments, and validation handling.
  • Integrated Razorpay and Juspay to enable secure and seamless in-app payments.
  • Introduced and maintained documentation for financing and consumer flows, improving collaboration and onboarding.
  • Owned the “Sell Car” appointment booking journey, ensuring smooth seller experience and operational reliability.
  • 🏢 Dealer App — C2B Auction & Loan Flows
  • Worked on product details, orders, loan flows, and payment service architecture for the Dealer app.
  • Participated in migration from Native Android & iOS to React Native, reducing codebase size by ~50% and simplifying maintenance.
  • 🧪 Process & Quality Improvements
  • Conducted a POC on TDD using Jest and introduced it across React Native projects, improving test coverage and release confidence.
  • Shared best practices, documentation, and coding standards across mobile teams to improve delivery efficiency.
ProgrammingRequirements AnalysisTypeScriptTechnical Project LeadershipRedux.jsJest+12

Wadi.com

Software Developer

Nov 2017May 2019 · 1 yr 6 mos · Gurgaon, Haryana, India · On-site

  • 🛒 Wadi AIO App — React Native Development
  • Developed core modules for the Wadi AIO app (e-commerce + FMCG) in React Native, including Product Detail, Cart, and Checkout flows, enabling a seamless shopping experience.
  • Implemented reusable components and modular architecture to support faster feature development and easier maintenance across the app.
  • Collaborated closely with backend teams to integrate APIs, manage state with Redux, and ensure reliable data flow and performance.
  • Mentored colleagues on React Native best practices, Redux state management, and mobile app development patterns, improving team efficiency and onboarding speed.
Apple pay integrationProgrammingCheckout & Cart FlowsRedux.jsJestJavaScript+8

Eatsy technologies

Freelance Web Developer

May 2017Oct 2017 · 5 mos · Remote

  • 📱 Eatsy Mobile Apps — React Native Development
  • Built core mobile applications for Eatsy’s platform, including both the restaurant app and diner app, using React Native to deliver cross‑platform functionality for iOS and Android.
  • Upwork
  • Collaborated with stakeholders to translate UI/UX designs into high‑quality, responsive screens and flows.
  • Integrated native capabilities and third‑party services for enhanced performance and user experience.
  • Maintained clear documentation and communication with the client to ensure timely delivery.
ProgrammingSignalRRedux.jsClient CollaborationJavaScriptMobile Technology+6

Marcibarker

Freelance Web Developer

Jan 2017Mar 2017 · 2 mos · Remote

  • 📲 Marcibarker App — React Native Development
  • Developed the mobile app for Marcibarker.com using React Native, focusing on reusable components and scalable state management.
  • Worked with Redux for clean and predictable client‑side state handling.
  • Delivered polished mobile screens that aligned with existing branding and UX expectations.
  • Provided feedback and iterative improvements based on client testing and review.
ProgrammingRedux.jsClient Feedback IntegrationJavaScriptMobile Technologyreact-native+2

Dobble.in

Mobile Application Developer

Jul 2016Jan 2017 · 6 mos · Gurgaon, India · On-site

  • 🏢 Prop360 Real-Estate App — React Native Development
  • Developed the Prop360 broker network app in React Native, enabling brokers and builders across India to manage listings, clients, and transactions efficiently.
  • Implemented the Dashboard module for the Broker Portal, providing real-time updates, analytics, and actionable insights.
  • Integrated Google Adwords API to support marketing analytics and lead tracking within the broker portal.
  • Implemented a payment gateway for the broker portal to handle transactions securely and reliably.
  • Collaborated closely with the CTO to define project structure, establish scalable architecture, and deliver high-quality features on time.
  • 📱 Dobble Hybrid Mobile App
  • Contributed to the development of the hybrid mobile app for Dobble.in, working on core modules and ensuring smooth cross-platform functionality.
ProgrammingTechnical Project LeadershipRedux.jsJavaScriptMobile Technologyreact-native+4

Trident analytical solutions

Mobile Application Developer

May 2015Jun 2016 · 1 yr 1 mo · Kanpur, Uttar Pradesh, India · On-site

  • 📱 Shabdanagari.in Mobile App
  • Single-handedly developed a fully-featured jQuery Mobile app for Shabdanagari.in, supporting cross-platform functionality (Android, iOS, Windows).
  • Implemented a custom Hindi keyboard for the Android app to enhance user input and accessibility.
  • 📺 Esalamandre.tv — Real-Time Hybrid Mobile App
  • Developed the hybrid mobile app for Esalamandre.tv, enabling real-time video and audio calls over SignalR, ensuring smooth multi-platform performance and low-latency communication.
  • 🤝 Additional Contributions
  • Assisted in the recruitment and onboarding process, helping evaluate technical skills for potential hires.
ProgrammingSignalRReal-Time Video/Audio (SignalR)C#JavaScriptHybrid & Native Apps+4

Education

IIT Kanpur

Bachelor of Technology (B.Tech.) — Civil Engineering

Jan 2011Jan 2015

JNV Saharanpur

High School and Intermediate — PCM

Jan 2003Jan 2010

Stackforce found 100+ more professionals with React Native & Mobile Technology

Explore similar profiles based on matching skills and experience