Android developer for
secure fintech apps at scale.

1.5 years building UPI SDK integrations, Account Aggregator consent flows, and Credit Card SDK workflows in Kotlin — with CI/CD automation that ships them reliably.

Lucknow, India Android Developer @ OneBanc Technologies UPI · Account Aggregator · Credit Cards
Get in touch View my work
onebanc.customer.app — system status
UPI SDK (Mindgate)Payment initiation · mandates · NPCI
in progress
Account AggregatorOAuth · redirect URI · session persistence
in progress
Credit Card SDKYes Bank · onboarding · KYC
in progress
CI/CD PipelineGitHub Actions · Play Developer API
stable
module · onebanc.customer.app kotlin · coroutines
PROFILE

Building secure, scalable fintech apps in Kotlin.

I'm an Android developer with 1.5 years of experience building secure and scalable fintech applications at OneBanc Technologies. My work spans UPI SDK (Mindgate) integration, Account Aggregator consent flows, Credit Card SDK integrations, REST API development, and CI/CD automation.

I work with a strong foundation in Kotlin, Android SDK, Jetpack Components, and Coroutines, paired with software engineering practices around modularity, security, and performance — partnering closely with backend, QA, and product teams to ship compliant fintech solutions.

LANGUAGES Kotlin, Java, C++, JavaScript, Python
ANDROID Android SDK, Jetpack Compose, Room, WorkManager, Coroutines, Retrofit, OkHttp, Firebase
WEB ReactJS, React Native, HTML, CSS, Bootstrap
TOOLS & DEVOPS Android Studio, Git, GitHub Actions, Gradle, Fastlane, Play Developer API, CI/CD
TESTING & SECURITY Espresso, JUnit, VAPT, MobSF, SonarQube, Code Coverage
EXPERIENCE

Where the work happened

JUL 2025 — PRESENT
Android Developer
OneBanc Technologies Pvt Ltd, Gurugram
  • Implementing UPI SDK (Mindgate) integration, including payment initiation, mandate handling, transaction lifecycle management, and network callback processing aligned with NPCI standards.
  • Designed and integrated Account Aggregator (AA) consent workflows through secure WebView implementation, handling OAuth authorization, redirect URI processing, deep-link callbacks, and session persistence.
  • Collaborated directly with Yes Bank (YBL) for Credit Card SDK integration, implementing onboarding journeys, KYC workflows, and secure transaction flows.
  • Integrated and maintained multiple third-party financial SDKs, managing lifecycle events, callback orchestration, error handling, and secure token exchange mechanisms.
  • Refactored legacy Android modules to improve modularity, application stability, and API/network performance.
  • Engineered CI/CD pipelines using GitHub Actions and Google Play Developer API, automating build, signing, testing, and deployment workflows.
  • Partnered with backend, QA, and product teams to deliver scalable, secure, and compliant fintech solutions.
OCT 2024 — JUN 2025
Android Developer Intern
OneBanc Technologies Pvt Ltd, Gurugram
  • Developed authentication workflows, payment modules, and reusable Android UI components.
  • Integrated REST APIs and implemented secure session management across application modules.
  • Wrote and maintained Espresso UI tests and supported production release validation.
JUN 2023 — AUG 2023
Frontend Developer Intern
Wictronix (Remote)
  • Built responsive web interfaces using ReactJS, HTML, CSS, and Bootstrap.
  • Integrated REST APIs and optimized frontend components for performance and maintainability.
CORE COMPETENCIES

What I specialize in

The areas where most of my production fintech work has been concentrated.

01
UPI SDK Integration
Mindgate UPI SDK integration covering payment initiation, mandate handling, transaction lifecycle management, and network callback processing aligned with NPCI standards.
MindgateNPCIPayments
02
Account Aggregator Flows
Secure WebView-based AA consent workflows — OAuth authorization, redirect URI processing, deep-link callbacks, and session persistence.
OAuthWebViewConsent Flow
03
Credit Card SDK & CI/CD
Yes Bank Credit Card SDK integration — onboarding, KYC, transaction flows — alongside CI/CD pipelines built on GitHub Actions and the Google Play Developer API.
KYCGitHub ActionsFastlane
PROJECTS

Things I've built end to end

🏋️
Brofit — Gym Management App
React Native · 2023–2024
Developed and published a cross-platform mobile application using React Native, implementing membership management, scheduling, and user administration features. Successfully deployed across multiple local gyms.
📸
Face Detection Attendance System
Python · OpenCV · 2022
Built an attendance tracking system using Python and OpenCV, implementing facial recognition and automated attendance logging.
EDUCATION

Academic background

2021 — 2025
B.E. in Computer Science Engineering
Chandigarh University, Mohali, Punjab · CGPA: 8.5 / 10
2019 — 2021
Intermediate & Matriculation
Lucknow Public Schools and Colleges · Intermediate: 92% (2021) · Matriculation: 94% (2019)
CORE CONCEPTS

Foundations I build on

Data Structures & Algorithms REST APIs OOP Debugging Performance Optimization VAPT MobSF SonarQube

Have a fintech problem worth solving properly? Let's talk.

udaypratapsingh95802@gmail.com
+91 95802 69430 · Lucknow, India