John – React Native, React, AWS

It's a greenfield project in the medical/healthcare sector, specializing in a medical app that facilitates direct connections between patients and specialists, prioritizing patient comfort and offering bespoke medical advice instantly, without the need for waiting, at the touch of a button.

John's contributions include, but are not limited to:

• Developed a mobile app from scratch as a solo developer;
• Decided on application architecture for the app;
• Built the app using TypeScript;
• Leveraged Hasura GraphQL API for backend services;
• Utilized various AWS services including Cognito, AWS Lambda, Route53, RDS, EC2, CloudFront, Docker, and AWS Amplify for backend infrastructure and deployment;
• Managed end-to-end development of the app.

Secure 1 to 1 encrypted messaging and calling app

John's contributions include, but are not limited to:

• Developed Genesys Chat app from scratch using React Native with Typescript, ensuring cross-platform compatibility.
• Integrated MongoDB database for real-time data storage and management.
• Implemented Socket.IO for real-time communication between users.
• Utilized Realm for local storage, ensuring offline access to chat messages.
• Designed intuitive user interface and experience for seamless interaction.
• Integrated features such as user authentication, chat rooms, notifications, and media sharing.
• Conducted testing and debugging to ensure app stability and performance.
• Stayed updated with latest trends in mobile app development for continuous improvement.
• Provided user support and addressed technical issues for enhanced user satisfaction.

Fast Fashion Retailer with a mission to empower young women to embrace their unique style and confidence, providing its customers with a diverse range of on-trend clothing and accessories.

John managed the following responsibilities:

• Led the React Native development team;
• Architected and developed React Native applications;
• Set up Continuous Integration (CI) and Continuous Deployment (CD) pipelines;
• Implemented and maintained a Design System using Storybook;
• Conducted code reviews and ensured code quality;
• Performed testing and quality assurance;
• Documented architectural decisions and technical designs.

This platform helps modern commerce companies maximize the potential of multi-channel retailing through the platform's supply chain and retail logistics services. This project required a modern intranet application to integrate 3 legacy inventory management systems (legacy XML webservices) with a modern stack.

John succeeded in the following:

• Defined application architecture;
• Used MongoDB to ensure connection between the back-end and front-end;
• Consumed RESTful data exposed by existing services through .NET Web API and integrated it into the frontend application;
• Implemented frontend functionalities using React and Next.js, based on the provided design and requirements;
• Led development team;
• Contributed to development;
• Designed UI of components and pages;
• Integrated REST API.

This platform provides smart solutions that drive audience and commercial objectives for today’s multi-channel bookmakers, publishers and rights holders. It provides the support of the entire customer engagement, acquisition and monetization lifecycle.

Among others, John has successfully carried out the following:

• Developed a mobile app from scratch, including designing UI, screens, and components;
• Integrated various API services into the mobile app to enable functionality and data exchange;
• Solely developed a mobile app from the ground up during the initial year;
• Worked alongside a backend Java developer to integrate various gambling systems.