Sagar Singh

IOS Engineer

Noida, Uttar Pradesh, India3 yrs 3 mos 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

3 yrs 3 mos
Total Experience
1 yr 3 mos
Average Tenure
8 mos
Current Experience

Creative frenzy pvt ltd.

Android Developer

Sep 2025Present · 8 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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