Rajat Kumar Tyagi — CTO

I build Android products that scale — from Samsung Health (tens of millions of users) to regulated fintech at ANZ Bank to cybersecurity at AT&T/Harman. With 8+ years in Kotlin, Jetpack Compose, and Clean Architecture, I specialise in two things: engineering systems that don't break at scale, and leading teams that consistently ship on time without burning out. 𝗪𝗵𝗮𝘁 𝗜 𝗯𝗿𝗶𝗻𝗴 𝘁𝗼 𝗮 𝘁𝗲𝗮𝗺: → System design depth — offline-first architectures, ADRs, module boundaries, sync protocols, security layers → Team leadership — led 5–7 engineer squads at Samsung, Harman, and Infosys with zero missed release milestones → Cross-domain expertise — fintech (ANZ Plus), cybersecurity (Active Armor / AT&T), consumer health (Samsung Health) → Security-first mindset — SSL pinning, certificate transparency, BiometricPrompt, GDPR-compliant data pipelines → On-device AI/ML — TFLite, Gemini API, MediaPipe, ML Kit integrated into production apps 𝗪𝗵𝗮𝘁 𝗜'𝘃𝗲 𝗯𝘂𝗶𝗹𝘁: ▸ A health-tracking module for Samsung Health used by tens of millions — designed the sync protocol, led HQ design reviews, authored ADRs ▸ Active Armor (AT&T) — led a 7-engineer team shipping antivirus, identity protection, and browser security to global Play Store; 10+ releases, zero critical regressions ▸ ANZ Plus — designed the security architecture for a regulated Australian banking app; served as Release Lead across 3 major launches; awarded Perfect Performer twice ▸ Ride9ja — architected a dual ride-hailing platform (rider + driver) with real-time GPS, Firebase chat, and multi-gateway payments; cut cold-start time by 80% 𝗠𝘆 𝘀𝘁𝗮𝗰𝗸: Kotlin · Jetpack Compose · Coroutines/Flow · Hilt · Room · MVVM/MVI · Clean Architecture · Kotlin Multiplatform · TFLite · Gemini API · WorkManager · Retrofit · Firebase · CI/CD I care deeply about code quality, developer experience, and building things that actually last. I've refactored monoliths into clean module boundaries, mentored junior engineers into leads, and shipped at the intersection of product speed and engineering rigour. Currently based in Noida, India — open to Senior/Lead/Staff Android roles at product-led companies, open for relocation anywhere in the Europe. 📬 tyagirajat19@gmail.com 🐙 github.com/RajatAndroidDeveloper

Stackforce AI infers this person is a Fintech and Healthcare-focused Android Developer with strong system design and team leadership skills.

Location: Bengaluru, Karnataka, India

Experience: 6 yrs 10 mos