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Birju kumar

@birjukumar1

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Android SDK engineer at ROAM.AI who owned production Android and iOS Location SDKs used in apps with 1M+ downloads.

India

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At ROAM.AI, I owned the engineering of production Android and iOS Location SDKs for enterprise customers, including their architecture, public APIs, compatibility, and releases. After ROAM.AI was acquired by Echo Analytics, I continued shipping both SDKs and supporting integrations, including apps with more than 1M Google Play downloads.

At WayCool Foods and Products, I shipped four Android apps and built MyPrice, a live agricultural auction app, from an empty repo. I also created Spotshunt, a native Android and iOS location-based discovery and rewards product, and authored and maintain BackgroundAudit, an open-source Android library.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer (SDE-III)

Roam.AI

Jun 2021 - Apr 2026 (4 years 10 months)

Owned end-to-end engineering of production Android and iOS Location SDKs, including architecture, public API design, semantic versioning, and release management. Supported enterprise integrations and mentored junior engineers.

Product Developer

WayCool Foods and Products

Jun 2019 - Jun 2021 (2 years)

Shipped and maintained four production Android applications, including a B2B commerce app and a live auction platform. Reduced crash rate from 3.2% to 0.8% and improved startup time and rendering performance.

Android Kotlin MVVM Android Architecture Components Coroutines ROOM SQLite Firebase Crashlytics Firebase Cloud Messaging WebSockets Offline First Performance Optimization Runtime Memory Profiling Google Play Console Release Management

Android Developer (Trainee)

Promatics Technologies Pvt. Ltd.

Jan 2019 - Apr 2019 (3 months)

Contributed to production Android applications serving 5,000+ active users and integrated third-party services including Razorpay payments, Zendesk SMS, and Apixu Weather APIs.

Android Third Party Integrations Razorpay Zendesk Apixu