Sayan Ghosh
Software Engineer @Zeta
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WORK HISTORY
Software Engineer @Zeta
Bengaluru, IN
Integrated contactless payment system using VisaPaymentSDK with APDU service for NFC, reducing payment failures by 40% and processing time by 2s.Developed SIM based authentication mechanism leveraging inbound/outbound SMS with optimized pooling logic for seamless user onboarding/login.Deployed APIs in SpringBoot for international numbers onboarding to NPCI supported countries, ensuring RBI security compliances.Reduced payment fraud by 25% through implementation of a device binding mechanism in compliance with NPCI regulations.Designed a Secure Storage Framework featuring message-queue architecture with (Biometric/PIN/Pattern), and bots handling auto-locks and cooldown intervals.Built card management system, a config-driven screen, with smart refresh and caching in MVVM architecture, boosting engagement by 1.5x, reaching 80K daily visits.
EDUCATION
Techno Main - Salt Lake
Bachelor of Technology - BTech, Computer Science
ABOUT SAYAN GHOSH
Hi! I am Sayan and I love Competitive coding and development-related stuff.Skills : C, C++, Python, Java, HTML, CSS, C#, MongoDB, DSAlgo, React Js5-star (Rating - 2096) Competitive Coder at CodeChefExpert at CodeForces1261 rating in HackerEarth.Verified Problem Solver(Basic) at HackerrankInterest:• Web Development Frontend• Data Structures and Algorithms• Data Science• Machine Learning• Deep LearningGitHub: https://github.com/Shadow129-sysI am always up for new project ideas and making new friends! And if you have any crazy ideas you want to share then, do drop me a mail at g••••••••@gmail.com
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