Sagar Singh

IOS Engineer

Noida, Uttar Pradesh, India3 yrs 1 mo experience

Key Highlights

  • Expert in Android development with Kotlin and Jetpack Compose.
  • Successfully migrated legacy codebases to modern frameworks.
  • Proven track record in enhancing user engagement and app performance.
Stackforce AI infers this person is a B2C Android Developer specializing in user engagement and real-time communication solutions.

Contact

Skills

Core Skills

Android DevelopmentKotlin

Other Skills

Agora SDKAndroid JetpackAndroid NDKAndroid SDKAndroid StudioC (Programming Language)C++Cascading Style Sheets (CSS)Critical ThinkingDagger HiltData StructureData Structures And AlgorithmsDatabase Management System (DBMS)Design PatternsDevelopment Tools

About

🚀 Android Developer | Kotlin Craftsman | Compose Enthusiast A builder at heart, I specialize in creating seamless, high-performance Android apps that people love to use. With a solid foundation in C++, C, and Kotlin, and over a year of real-world experience, I’ve architected scalable features using MVVM, MVC, and MVP, built game integrations, monetized chat systems, and even optimized onboarding with A/B tested flows. From integrating Agora for real-time communication to crafting clean, modern UI with Jetpack Compose, I focus on blending user delight with performance. 🛠️ What I’ve shipped recently: • Migrated legacy XML codebases to Compose → cleaner code + better UX • Integrated Gmail login (OAuth 2.0) → 99.6% success rate = higher retention • Built contextual Coachmarks + Community Search → boosted onboarding & discovery • Resolved critical WebSocket + ANR bugs → stronger stability, lower crashes • Implemented chat monetization → 🎁 diamond-based virtual gifting = more revenue • Integrated OTPLess SDK + secure logout → smoother and safer login flows 🎓 B.Tech CSE (AI/ML), ABES Engineering College (2024) 💻 Solved 400+ DSA problems | Exploring KMP to build cross-platform magic 🏢 Currently at Eloelo, where I code, debug, experiment, and scale—daily. 🌱 Always learning. Always building. Let’s connect if you're building the next big thing, or just want to jam on Android, design patterns, or startup energy.

Experience

Creative frenzy pvt ltd.

Android Developer

Sep 2025Present · 6 mos · Noida, Uttar Pradesh, India · On-site

  • Upgraded our Party (audio/video hosting) experience with dynamic seat expansion (16 audio, 9 video) and introduced a new Duo Party mode. Fixed 32+ legacy crashes, refactored old modules, and made the overall flow faster, smoother, and way more reliable.
  • Delivered Free Target Tag feature and refactored WebView handling in TimiLive app by implementing custom in-app loading logic instead of external browser.
  • Developed an in-house “Lucky Number S&B” game for Zeeplive, enabling real-time betting on two types of numbers using Firebase for instant event updates
FirebaseAndroid DevelopmentKotlinWebSocketJava

Eloelo

3 roles

SDE-1 (Android)

Jul 2025Sep 2025 · 2 mos · Bengaluru, Karnataka, India · On-site

  • Monetised chat experience by enabling users to send virtual gifts (diamonds) to others, enhancing user engagement, fostering community interaction, and driving additional revenue.
  • Resolved legacy bugs and fixed a critical WebSocket issue where connections persisted for guest users and post-logout sessions. Also implemented safeguards to prevent recursive API calls on receiving 401/403 errors, ensuring app stability and optimal network usage.
  • Added the Suggested Gift feature in chat, enabling users to send a direct gift in one click. This boosted user engagement, enhanced the gifting experience, and contributed to revenue growth.
  • Introduced the Suggested Gift in chat list, allowing users to send a friendly "Hello" gift to start conversations with their favorite hosts—improving user experience and increasing reply rates.
  • Implemented contextual PN redirections, so users landing from push notifications are taken directly to the relevant screen—significantly improving navigation flow and overall app engagement.
  • Resolved legacy bugs and delivered multiple UX-focused enhancements, resulting in a smoother and more enjoyable product experience.
WebSocketKotlinFirebaseAndroid Development

Associate Software Developer (Android)

Jun 2024Jun 2025 · 1 yr · Bengaluru, Karnataka, India · On-site

  • Integrated Google Sign-In via OAuth 2.0, enabling fast, secure user login and smoother onboarding.
  • Migrated legacy XML UI to Jetpack Compose, modernizing codebase for better performance, readability, and faster development.
  • Implemented contextual Coachmarks in the community module using Jetpack Compose, guiding first-time users through key features for a smoother onboarding experience and improved usability.
  • Implemented a search feature within the community module using Jetpack Compose, enabling users to quickly discover their joined zones and explore popular zones with ease. Built with a smooth, responsive UI and efficient state management to deliver real-time results and an intuitive user experience.
  • Integrated a "suggested gift" feature, enabling users to appreciate and support their zone admins through personalized gifting options — adding a thoughtful touch to community engagement
  • Developed a community feature using Jetpack Compose, allowing creators to build communities and engage with followers through various interactive flows.
  • Redesigned the onboarding flow for the application, implementing twelve distinct variants for A/B testing to provide personalized user experiences based on experiments.
  • Integrated a Ludo game into the application, incorporating Agora SDK for real-time audio communication and pusher for real time emoji interactions, delivering an immersive multiplayer experience.
  • Successfully integrated the OTPLess SDK for seamless and secure otpless login functionality.
  • Contributed to the development of multiple features, enhancing user engagement and application performance.
  • Identified and fixed ANRs, optimized feature implementations for smoother performance, and used LeakCanary to detect and resolve memory leaks.
  • Implemented a secure logout system to enhance user security and session management.
  • SVG Sheep Fight Game: Refactored the game’s code for better performance and incorporated live audio and emoji interactions.
OAuthJetpack ComposeFirebaseKotlinAndroid Development

SDE (Android)

Dec 2023May 2024 · 5 mos · Bengaluru, Karnataka, India · On-site

  • Contributed to the chat application, achieving a 50% increase in user engagement by enhancing chat features and usability.
  • Played a key role in the game integration of Sheep Fight, implementing Agora SDK for real-time audio communication and pusher for real time emoji interactions, which led to a 20% increase in user engagement.
  • Designed and developed a modular system for MoEngage events using the proxy design pattern, ensuring all events are triggered seamlessly from a centralized module for better maintainability and scalability.
Agora SDKFirebaseAndroid Development

Microsoft

Microsoft Engage Mentee

May 2022Dec 2023 · 1 yr 7 mos

Education

ABES Engineering College

B.tech — Computer Science And Engineering

Dec 2020Jul 2024

Azad Public School

12 — PCM

Jan 2019Jan 2020

Saint Momina School

High School

Jan 2017Jan 2018

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