Hi all, I'm Jihad Hasan Joy

Senior Software Engineer with over 7+ years of experience delivering secure, scalable mobile and web applications across fintech, enterprise, and media sectors. Specialized in React Native development with a strong background in Angular and React, and solid support experience in backend integration using expressJS. Skilled in biometric authentication, localization, state management, and performance optimization. Effective team player and mentor with hands-on experience in Agile product delivery.

See My Resume

What I do

CRAZY FULL STACK DEVELOPER WHO WANTS TO EXPLORE EVERY TECH STACK

Full Stack Development

Developed and maintained enterprise-level and banking applications using Angular, React, and React Native.

Built secure mobile banking applications with features such as Face ID, Fingerprint authentication, secure storage, and SSL pinning.

Integrated Firebase services including Push Notifications and Analytics to boost user engagement and monitor performance metrics.

Designed responsive, mobile-first UIs following Figma designs and established design systems, ensuring consistency and accessibility across platforms.

Implemented complex state management and data fetching using Redux Toolkit (RTK), RTK Query, and NgRx.

Collaborated closely with backend teams to integrate RESTful APIs and GraphQL services, ensuring seamless data flows and performance.

Delivered advanced functionality such as real-time data streaming, offline support, notifications, and multi-language localization.

Managed multiple deployment environments (Dev, Stage, Prod) for both mobile and web applications.

Optimized performance by reducing bundle sizes, enhancing load times, and ensuring smooth cross-platform operations.

Mentored junior developers, conducted code reviews, and enforced best practices around clean architecture, security, and scalability.

Published and maintained mobile applications on Apple App Store and Google Play Store, managing app submission, versioning, and compliance with platform guidelines.

Proficiency

Frontend (Mobile)

98%

Frontend (React & Angular)

98%

Backend

70%

Education

University of Liberal Arts Bangladesh

Bachelor of Science in Computer Science

September 2017 - April 2020Grade 3.21 / 4.00

Experience

Selise Digital Platforms

Senior Software Engineer

Feb 2023 - Present

Contributing to the development of scalable web and mobile applications using modern JavaScript frameworks.

Lead the development of web and mobile applications using React.js, React Native, and Angular.
Collaborate with UX/UI designers to build responsive and visually appealing interfaces.
Implement and maintain RESTful and GraphQL APIs for seamless data exchange.
Participate in Agile/Scrum ceremonies to ensure efficient project management and timely delivery.

Brain Station 23 Limited

Software Engineer

Sep 2020 – Jan 2023

Focused on building high-performance single-page applications and leading frontend development.

Developed Angular and React.js SPAs with responsive UI components.
Led a 5+ member frontend team ensuring consistent coding standards.
Deployed applications using Azure DevOps and monitored system performance.
Continuously optimized frontend performance and maintained application stability.

Samurai System Limited

Full Stack Developer

Nov 2017 – Aug 2020

Worked on full-stack development, delivering reliable frontend and backend solutions.

Developed dynamic UIs and drag-and-drop features using Angular.
Built REST APIs with ASP.NET Core to support frontend operations.
Designed responsive layouts using Bootstrap and Foundation CSS.
Managed environment setup and deployment pipelines.
Performed bug fixing and usability testing to ensure product quality.

Projects

Finsy

Finsy is a holistic finance app designed to bring all your financial life into one view. Whether it’s income, expenses, insurance or pension planning — Finsy helps you monitor, simulate, and optimize your finances in one intuitive platform

Technologies

React NativeAngularRedux toolkitRxJSGoogle map APIEChartsTailwind CSS

Responsibilities

Leading Frontend team. Prepare web and mobile architecture. Developing Angular and react native Application as per projects requirements

Convenience Pay (Unipet)

Convenience Pay is a payment solution for Unipet, a Trinidad and Tobago–based petroleum company. It enables sales and tracking of petroleum products to various customers like Fleet and Merchants using smart cards nationwide.

Technologies

AngularRxJSNgRxGoogle map APIEChartsBootstrapHTML5SASS

Responsibilities

Leading the frontend team in designing architecture, optimizing content and performance, and developing Angular applications based on project requirements.

GKB Gioia 3a

GKB Gioia 3a (Graubündner Kantonalbank) – Mobile App Contributed to the development of a secure pension management app allowing users to open, monitor, and manage their 3a investment accounts digitally. Focused on performance optimization, frontend development, and seamless user experience for financial services.

Technologies

React NativeReduxEChartsTailwind CSSFirebaseonfidomatomo

Responsibilities

Developing React Native application as per project requirements, optimizing performance, and ensuring a seamless user experience.

ShopperOn

ShopperOn (ShopperON Live) is a live shopping marketplace that blends real-time interaction with e-commerce. It connects users with trusted brands and products, showcased by live hosts who present items and answer questions on the spot. The platform also offers cashback rewards on purchases and helps users discover authentic deals while making shopping engaging.

Technologies

React NativeReduxEChartsTailwind CSSFirebaseAgora

Responsibilities

Leading Frontend team. Prepare web and mobile architecture

SGKB MiniBank

An educational pocket-money app for children aged 6–13 to learn responsible financial habits. Includes features like savings goals, quizzes, and parental monitoring through an “Eltern-Cockpit.” Focused on creating an engaging, safe, and family-friendly financial experience.

Technologies

React NativeRedux ToolkitEChartsFirebasematomo

Responsibilities

Developing React Native application as per project requirements, optimizing performance, and ensuring a seamless user experience.

Samurai Screen

Samurai Screen is an advertising network providing wireless, real-time, scalable, end-to-end digital signage solutions. It can deliver content to millions of screens regardless of their location, offering a dynamic platform for advertisers to reach a wide audience.

Technologies

AngularAngular Material DesignMaterial CDkRxJSNgRxBootstrapHTML5SASS

Responsibilities

Developing Angular application as per project requirements

Reach Out to me!

Have a project idea or just want to chat? Feel free to drop a message on LinkedIn — my inbox is open!

Mohammadpur, Dhaka, Bangladesh