Sayan Ghosh

Software Engineer

Kolkata, West Bengal, India1 yr 8 mos experience

Key Highlights

Expert competitive coder with 5-star rating.
Integrated payment systems reducing failures by 40%.
Designed secure frameworks enhancing user experience.

Stackforce AI infers this person is a Fintech Software Engineer with expertise in payment systems and user authentication.

Contact

Skills

Core Skills

JavaSpring BootFintechProblem Solving

Other Skills

NPCIDSADeep LearningAndroid JetpackKotlinModel-view-viewmodel (MVVM)AndroidAndroid DevelopmentAndroid SDKMicroservicesA/B TestingFirebaseComputer VisionC++

About

Hi! I am Sayan and I love Competitive coding and development-related stuff. Skills : C, C++, Python, Java, HTML, CSS, C#, MongoDB, DSAlgo, React Js 5-star (Rating - 2096) Competitive Coder at CodeChef Expert at CodeForces 1261 rating in HackerEarth. Verified Problem Solver(Basic) at Hackerrank Interest: • Web Development Frontend • Data Structures and Algorithms • Data Science • Machine Learning • Deep Learning GitHub: https://github.com/Shadow129-sys I 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 gsayankr02@gmail.com

Experience

Zeta

2 roles

Software Engineer

Jul 2024 – Present · 1 yr 8 mos · Bengaluru, Karnataka, India · On-site

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.

Spring BootJava

Software Engineer Intern

Jan 2024 – Jul 2024 · 6 mos · Bengaluru, Karnataka, India · On-site

Engineered Banking Interface using Jetpack Compose, leveraging Firebase RTDB, achieved 90% lower latency, and integrated SSO login with consent APIs.
Integrated and implemented core Flutter SDKs— Networking, Crashlytics, and UDS.

FinTechNPCI