Birju Kumar
@birjukumar
I build production Android and iOS location SDKs that enterprise teams can integrate and trust.
IndiaWhat I'm looking for
At ROAM.AI, I own production Android and iOS Location SDKs used by enterprise customers, from public API design and semantic versioning through release management, customer onboarding, and production fixes. I build reliable background location, activity recognition, telemetry, and offline synchronization capabilities while protecting battery life, compatibility, and mobile security.
Previously at WayCool, I shipped four Android applications with 25,000+ combined downloads and reduced crash rates from 3.2% to 0.8% through Crashlytics-driven stability work. I enjoy improving mobile architecture, mentoring engineers, and partnering with product, design, QA, backend, and DevOps teams to ship dependable releases.
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, covering architecture, public API design, semantic versioning, backward compatibility, and release management. Reduced battery consumption, implemented real-time telemetry, and supported enterprise integrations for apps with 1M+ downloads.
Product Developer
WayCool Foods and Products
Jun 2019 - Jun 2021 (2 years)
Built and shipped four production Android applications from the ground up, collectively exceeding 25,000+ downloads. Reduced crash rate from 3.2% to 0.8% and improved startup time and rendering performance.
Android Developer (Trainee)
Promatics Technologies Pvt. Ltd.
Jan 2019 - Apr 2019 (3 months)
Contributed to production Android applications serving 5,000+ active users. Integrated third-party services including Razorpay, Zendesk SMS, and Apixu Weather API, and improved API response handling.
Education
Degrees, certifications, and relevant coursework
Pondicherry University
Master of Computer Applications, Computer Applications
2016 - 2019
Grade: 8.1/10 CGPA
Master of Computer Applications degree from Pondicherry University with a CGPA of 8.1/10.
Ranchi University
Bachelor of Science, Computer Applications
2012 - 2015
Grade: 68.75%
Bachelor of Science in Computer Applications from Ranchi University with 68.75% marks.
Tech stack
Software and tools used professionally
Availability
Location
IndiaAuthorized to work in
Website
crazyvibes.github.ioJob categories
Skills
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