I'm Jayesh Jain, a Flutter developer with 4+ years of building production mobile apps across fintech, trading, fitness, and marketplace domains. I've delivered 10+ live apps on the Play Store and App Store, owning the full product lifecycle from clean architecture to release. I specialize in Bloc/Riverpod state management, REST API integrations, payment gateways (Stripe, Razorpay), and KYC compliance flows. I'm passionate about shipping reliable, scalable apps and contributing to open-source projects like the dummy_api_overlay on pub.dev.

Jayesh Jain

I'm Jayesh Jain, a Flutter developer with 4+ years of building production mobile apps across fintech, trading, fitness, and marketplace domains. I've delivered 10+ live apps on the Play Store and App Store, owning the full product lifecycle from clean architecture to release. I specialize in Bloc/Riverpod state management, REST API integrations, payment gateways (Stripe, Razorpay), and KYC compliance flows. I'm passionate about shipping reliable, scalable apps and contributing to open-source projects like the dummy_api_overlay on pub.dev.

Available to hire

I’m Jayesh Jain, a Flutter developer with 4+ years of building production mobile apps across fintech, trading, fitness, and marketplace domains. I’ve delivered 10+ live apps on the Play Store and App Store, owning the full product lifecycle from clean architecture to release.

I specialize in Bloc/Riverpod state management, REST API integrations, payment gateways (Stripe, Razorpay), and KYC compliance flows. I’m passionate about shipping reliable, scalable apps and contributing to open-source projects like the dummy_api_overlay on pub.dev.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

English
Fluent

Work Experience

Senior Mobile App Engineer at BillMart Fintech
November 1, 2024 - Present
Own full mobile product lifecycle (architecture → App Store/Play Store release) for a production fintech lending app serving active borrowers across India. Architected multi-flavor app setup enabling a second branded product (Empcash) from a single Flutter codebase, reducing release overhead by ~40%. Built EMI and BPI calculation engine in Dart handling irregular repayment schedules across 3 product variants, integrated into live loan disbursement flows. Set up CI/CD pipeline with GitHub Actions + Codemagic; improved app load time by 20% through profiling. Implemented dynamic localization, iOS Universal Links, and KYC flows for compliance.
Senior Flutter Developer at Website Developers India
October 1, 2023 - November 30, 2024
Delivered 5 production Flutter apps across fintech (Tanami private markets), fitness (GetSetFit), F&B deals, portfolio/trading, and agri-marketplace (FarmFlow Ireland). Integrated Shufti Pro KYC, Apple Pay, Smallcase, and Upstock APIs with full token management, secure storage, and end-to-end error handling across live trading apps. Instrumented Firebase Analytics and Crashlytics across all releases; used crash data to drive targeted fixes, improving session stability and user retention. Led code reviews, enforced Clean Architecture + Bloc patterns as team standards, and delivered features consistently within Agile sprint cycles.
Flutter Developer at Webapps Solutions Pvt. Ltd.
March 1, 2023 - September 30, 2023
Built HelloAstro — a live astrology platform with real-time consultant chat, kundli matching, and multilingual content for a large active user base. Developed SmarteTracker — a live employee GPS tracking and HR management app with real-time location sync via Socket.IO and Google Maps for low-latency field tracking.
Full-Stack Flutter Developer at Studioous
July 1, 2022 - December 31, 2022
Built GoWaterless — a 3-sided on-demand waterless car wash marketplace with separate Flutter apps for customers, franchise owners, and washers, all live on Play Store. Architected multi-role booking system with real-time job dispatch across a Django/MongoDB backend; launched engagement feature that boosted user retention by 20%.

Education

MSc in Information Technology at Shankar Narayan College, Mumbai
January 1, 2023 - January 1, 2025
BSc in Information Technology at Shree L.R. Tiwari Degree College, Mumbai
January 1, 2019 - January 1, 2022
BSc in Information Technology at Shree L.R. Tiwari Degree College, Mumbai
January 1, 2019 - January 1, 2022

Qualifications

Claude AI Expert — Anthropic
April 1, 2026 - June 23, 2026
Toptal Verified Expert — Top 3% of global Flutter developers
June 1, 2026 - June 23, 2026
Claude AI Expert — Anthropic
April 1, 2026 - June 23, 2026
Toptal Verified Expert — Top 3% of global Flutter developers
June 1, 2026 - June 23, 2026

Industry Experience

Financial Services, Software & Internet, Retail, Professional Services, Media & Entertainment, Agriculture & Mining

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
See more