Headline

Software Engineer II | Flutter • Kotlin • React Native • Next.js | Mobile Architecture | System Design | Android • iOS • Web

About

Software Engineer II with 4+ years of experience building scalable Flutter and React Native mobile applications, native Android solutions in Kotlin, and Next.js web applications across HealthTech, FinTech, and AgriTech. I enjoy building products from concept to production, combining strong engineering fundamentals with a focus on performance, scalability, and user experience. My work spans mobile architecture, system design, native Android development, server-driven UI, KYC and identity verification, payments, subscription systems, and cross-platform application development. Throughout my career, I've owned products end-to-end—from architecture and implementation to testing, CI/CD, monitoring, and production releases—while collaborating closely with product, design, backend, and business teams. Selected Impact • Built a cross-platform fertility platform from concept to production in 3 months, now serving 2,500+ couples • Increased onboarding completion by 43% while reducing runtime crashes by 67% through Crashlytics instrumentation, analytics, A/B testing, and performance optimization • Designed a config-driven KYC routing engine supporting 6+ countries, reducing new-country onboarding effort by 70% • Developed native Android modules in Kotlin integrating multiple KYC SDKs for secure document capture, OCR, face verification, and biometric authentication • Re-architected imumz.com using Next.js, SSR, and SEO, driving 38K+ monthly organic visits • Led a 4-engineer mobile team through architecture reviews, sprint planning, 250+ pull request reviews, and mentoring junior engineers Core Technologies Flutter • React Native • Kotlin • Android • Next.js • React • Firebase • AWS • PostgreSQL • REST APIs • GraphQL • System Design • Mobile Architecture • CI/CD I'm always interested in building products that solve real-world problems and collaborating with teams that value ownership, engineering excellence, and measurable impact.

Location

Bengaluru

AI stack

claude

cursor

github copilot

mcp

openai

opencode

Work experience

Software Engineer II at iMumz, Jun 2024 - Present · 2 yrs 3 mos, Bengaluru South, Leading mobile engineering for one of India's leading pregnancy and fertility platforms, delivering scalable Flutter, Kotlin, and Next.js solutions across Android, iOS, and Web. Highlights: • Built a cross-platform fertility platform from concept to production in 3 months, serving 2,500+ couples with nutrition planning, medication tracking, doctor consultations, appointment booking, and yoga monitoring. • Increased onboarding completion by 43% and reduced runtime crashes by 67% through Crashlytics instrumentation, analytics funnels, A/B testing, and performance optimization. • Launched an end-to-end consultation platform supporting 15+ doctors, 1,000+ appointments every month, and Razorpay Pay Later, creating a new revenue-generating service. • Re-architected imumz.com using Next.js, SSR, and SEO best practices alongside a custom CMS, growing organic traffic to 38K+ monthly visits. • Implemented a unified subscription entitlement system across four client applications using deep links and centralized entitlement management, enabling seamless premium access across mobile and web. • Led a 4-engineer mobile team through sprint planning, architecture reviews, 250+ pull request reviews, and mentorship of junior engineers.

Software Engineer I at iBind Systems, Dec 2022 - Jun 2024 · 1 yr 7 mos, Bangalore Urban, Developed enterprise-grade identity verification and onboarding solutions for regulated financial products. Highlights: • Designed and implemented a config-driven KYC routing engine using a unified JSON schema supporting 6+ countries, reducing new-country onboarding effort by 70%. • Developed 3+ native Android modules in Kotlin using MVVM, Coroutines, and Jetpack, integrating Flutter with multiple KYC SDKs for secure document capture and biometric verification. • Led Flutter architecture using BLoC, AutoRoute, Retrofit, and Clean Architecture, achieving 85% unit test and 60% widget test coverage while reducing production regressions. • Co-designed scalable REST APIs enabling configurable identity verification across multiple country-specific KYC workflows and compliance requirements.

Software Engineer - Mobile at Bijak, Apr 2022 - Dec 2022 · 9 mos, Gurugram, Built and scaled mobile applications powering one of India's largest B2B agriculture marketplaces. Highlights: • Engineered the Agent and Broker applications from concept to launch, delivering real-time analytics, demographic insights, comparable sales filtering, and automated brokerage fee calculations. • Shipped 15+ production features across three marketplace applications serving buyers, suppliers, brokers, and farmers, reducing user-error support tickets by 25%. • Integrated AWS S3, SNS, and AppSync for media storage, push notifications, and real-time synchronisation. • Refactored application state management from BLoC to GetX, reducing boilerplate by 35% while improving rendering performance and development velocity.

Software Engineer - Mobile [Trainee] at Bijak, Sep 2021 - Apr 2022 · 8 mos, Gurugram, - Shipped 15+ features across the Bijak, Broker, and Agent apps, improving app dynamism for user-specific cases. - Wrote business logic on AWS Lambda (serverless) for streamlined operations. - Built reusable, customizable components that improved UX and app performance.

Research And Development Engineer at Samsung R&D Institute India, Jun 2021 - Jan 2022 · 8 mos, Bengaluru, - Implemented TensorFlow Lite models via the TensorFlow C++ API for on-device inference across a range of mobile devices. - Prototyped in Python, then ported to optimized C++ for mobile deployment. - Collaborated with mentors on real-world applications of the models.

Application Developer - Javascript at Queppelin, Feb 2021 - Aug 2021 · 7 mos, Gurugram, - Built responsive UI/UX for client websites in React.js (Material UI, Bootstrap, Redux). - Served as lead contributor on client projects and managed client-facing communication from a developer's perspective.

Education

BTech - Bachelor of Technology, Computer Science, C.V.Raman College of Engineering

Bachelor of Engineering, Computational Science, C.V. Raman Global University

Public links

github: https://github.com/yashrajjain726

medium: https://medium.com/@yashrajjain726

leetcode: https://leetcode.com/yashrajjain726