Onkar Mahajan

Product Engineer

Pune City, Maharashtra, India6 yrs 11 mos experience
AI ML PractitionerAI Enabled

Key Highlights

  • Architected AI-powered mobile solutions.
  • Reduced app startup time by 40%.
  • Mentored junior developers, enhancing team skills.
Stackforce AI infers this person is a Mobile AI Engineer specializing in SaaS applications.

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Skills

Core Skills

Android DevelopmentAi IntegrationMobile Development

Other Skills

KotlinJetpack ComposeCoroutinesFlowGemini APIChatGPT APIHiltWorkManagerFirebaseRESTFigmaReal-time processingFlutterCursor AIJava

About

๐Ÿš€ Senior Android Developer & Mobile AI Engineer | 6+ Years | Pune I build Android apps that don't just work โ€” they think. Over the last 6 years I've shipped production mobile apps with 10,000+ combined downloads, led AI integrations using Gemini API and ChatGPT, and pushed crash-free sessions from 64% โ†’ 90% while cutting app startup time by 40%. I treat AI as a core part of my engineering workflow โ€” not a side skill. โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” ๐Ÿค– What I do differently โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” Most Android devs write code. I engineer AI-powered experiences. At Sell.do, I architected a Gemini API-powered Call Analytics system โ€” real-time transcription, auto-summaries, keyword tagging โ€” serving 600+ real estate brands managing USD 25Bn+ in inventory. I also integrated ChatGPT for AI-generated email drafts, smart auto-replies, and lead summaries directly inside a CRM used daily by thousands of sales reps. Beyond shipping features, I use AI in my daily dev workflow: โ†’ Claude for code review & architecture decisions โ†’ Cursor for AI-assisted Kotlin development (error-free, faster) โ†’ ChatGPT for rapid prototyping and documentation This alone accelerated our feature delivery by ~35%. โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” ๐Ÿ“ฑ Apps I've built (Live on Play Store) โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” โ–ธ Sell.Do CRM โ€” 10K+ downloads | Kotlin / Jetpack Compose / Gemini API โ–ธ Sell.do Dialer โ€” 1K+ downloads, 4.2 โญ | Smart CRM-integrated calling app โ–ธ PropPartnerX โ€” Flutter / Cursor AI | Broker pipeline app for PropTiger โ–ธ IP Camera Monitor โ€” 3,170+ reviews | ONVIF surveillance, PTZ controls โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” ๐Ÿ›  Core Stack โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” Kotlin ยท Jetpack Compose ยท MVVM ยท Clean Architecture ยท Coroutines ยท Flow ยท Hilt ยท Room ยท WorkManager ยท Firebase ยท Gemini API ยท ChatGPT ยท Flutter ยท REST ยท CI/CD โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” ๐Ÿ‘ฅ Beyond the code โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” I've mentored 3 junior developers and 2 interns โ€” running 1-on-1 sessions on architecture, Kotlin best practices, and AI-assisted workflows. Watching someone go from confused to confidently shipping features independently is genuinely one of the best parts of this job. If you're building something that uses AI to make mobile experiences smarter โ€” let's talk. ๐Ÿ“ง onkarmahajan05@gmail.com

Experience

6 yrs 11 mos
Total Experience
3 yrs 9 mos
Average Tenure
3 yrs 2 mos
Current Experience

Sell.do

Product Engineer II โ€“ Android (Senior Android Developer & Mobile AI Engineer)

Apr 2023 โ€“ Present ยท 3 yrs 2 mos ยท Pune City ยท Hybrid

  • ๐Ÿข Sell.do is India's leading real estate CRM โ€” 600+ brands, 450M+ customer interactions, USD 25Bn+ inventory managed.
  • ๐Ÿค– AI & LLM Integration
  • โ–ธ Architected a Gemini API-powered Call Analytics system โ€” real-time call transcription, automated summaries, and keyword tagging at scale
  • โ–ธ Integrated ChatGPT API for AI-generated email drafts, smart auto-replies, and lead summaries โ€” cutting manual effort across sales teams
  • โ–ธ Embedded AI into daily dev workflow (Claude, Cursor, ChatGPT) โ€” accelerating feature delivery by ~35%
  • ๐Ÿ“ฑ Apps Shipped
  • โ–ธ Sell.Do CRM โ€” 10K+ downloads | Kotlin / Jetpack Compose
  • โ–ธ Sell.do Dialer โ€” 1K+ downloads, 4.2 โญ | Built end-to-end independently
  • โ–ธ PropPartnerX โ€” Flutter / Cursor AI | For PropTiger / REA Group
  • โšก Performance & Architecture
  • โ–ธ Reduced app startup time by 40% and pushed crash-free sessions from 64% โ†’ 90%
  • โ–ธ Improved overall engagement by 30% via Jetpack Compose UI overhaul + MVVM re-architecture
  • โ–ธ Re-architected Rs.500 Cr+ financial report execution onto WorkManager โ€” eliminated UI freezes
  • โ–ธ Designed property listing UI that lifted lead conversion by 25%
  • ๐Ÿ‘ฅ Leadership & Mentorship
  • โ–ธ Mentored 3 junior developers and 2 interns through 1-on-1 sessions on Android architecture, Kotlin best practices, and AI-assisted development workflows
  • ๐Ÿ›  Tech: Kotlin ยท Jetpack Compose ยท Coroutines ยท Flow ยท Gemini API ยท ChatGPT API ยท Hilt ยท WorkManager ยท Firebase ยท REST ยท Figma
KotlinJetpack ComposeCoroutinesFlowGemini APIChatGPT API+7

Webtech developers pvt ltd

Senior Android Developer

Jun 2019 โ€“ Mar 2023 ยท 3 yrs 9 mos ยท Pune Division ยท Hybrid

  • ๐Ÿข Webtech Developers โ€” Android partner for Deskshare Inc., a US-based productivity & surveillance software company with a global user base.
  • Over 4 years, I owned the full Android development lifecycle across multiple production apps โ€” from architecture and development to Play Store release and post-launch support.
  • ๐Ÿ“ฑ Apps I Built & Maintained
  • โ–ธ IP Camera Monitor โ€” 3,170+ reviews, 3.7 โญ
  • Implemented ONVIF auto-detection, PTZ camera controls, live multi-camera streaming, and real-time snapshot refresh. Boosted user engagement by 20% through a complete UI redesign.
  • โ–ธ Medical Reminder โ€” 140+ reviews
  • Built an offline-first medication scheduling app with background alarm services, home screen widgets, and PDF health report generation. Designed for seniors and caregivers with accessibility-first UI.
  • โ–ธ Call for Help โ€” Emergency Response App
  • Reduced emergency response time by 25%, supporting 10,000+ active users across India.
  • โšก Technical Wins
  • โ–ธ Migrated entire codebases from Java โ†’ Kotlin โ€” reduced boilerplate by 30%, improved long-term maintainability
  • โ–ธ Established JUnit unit testing practices and introduced CI/CD workflows โ€” cut regression bugs by 25%
  • โ–ธ Delivered features across diverse domains: video surveillance, healthcare, emergency services
  • ๐Ÿ›  Tech: Java ยท Kotlin ยท Firebase ยท REST APIs ยท Git ยท MVP ยท ONVIF ยท Background Services ยท Room ยท Notifications ยท WorkManager
JavaKotlinFirebaseREST APIsGitMVP+6

Education

Indira College of Engineering and Technology

Bachelor's degree โ€” Computer Software Engineering

Jan 2016 โ€“ Jan 2019

Diploma college of Engineering amd techonology

Diploma of Education โ€” Computer Engineering

Jan 2012 โ€“ Jan 2016

L.N.H.V school

School

Jun 2011 โ€“ May 2012

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