Henry Chijioke Jeremiah

• I investigated and resolved production contact form delivery failures on a live WordPress business website using Contact Form 7 and WP Mail SMTP.

• Investigated frontend form behaviour, REST API responses, SMTP authentication logs, and mail server configurations to identify root causes of failed submissions.

• Configured authenticated SMTP email delivery through IONOS-hosted business mailboxes and restored successful customer enquiry submissions.

• Implemented proper Reply-To handling for customer communication workflows and improved email routing reliability.

• Troubleshot SPF/DKIM email authentication and domain mail deliverability issues affecting external recipients such as Gmail users.

• Built the frontend using next.js, React, Typescript, and tailwind CSS to support secure, responsive, and user-friendly interaction.

• Developed backend using FastAPI, python, MySQL, APIs for authentication, logging, dashboard data handling, and accountsettings.

• Applied Agile development practices, test-driven thinking, and iterative feature delivery throughout implementation.

• Trained a custom food image dataset using YOLOv11 for object detection

• Strengthening experience in full-stack engineering, API integration,

structured testing, and maintainable software design.

• Engineered a secure micro-services-based application using Java, Spring Boot, and Spring Security to modernise electoral systems, applying Domain-Driven Design (DDD) and Clean Architecture.

• Implemented JWT-based authentication and authorisation for a secure REST API, preventing unauthorised access and multiple voting to ensure system integrity.

• Developed a React frontend for voter registration, ballot casting, and real-time result generation, with a separate admin interface for election management.

• Utilised Spring Data JPA with MySQL for robust data persistence and applied Factory, Strategy, and Repository design patterns for a scalable codebase.

• Designed and integrated the calendar component for linking notes with dates.

• Built RESTful API endpoints for note operations (create, read, update, delete).

• Built RESTful Node.js/Express.js backend API with MongoDB and Mongoose ODM for robust data persistence.

• Actively sought code reviews and collaborated with 4 teammates using Git and feature branching, effectively merging code and resolving conflicts in a shared codebase.

• Organised project into clean frontend using React and backend structure using Node.js/Express.js.

• Enabled multimedia support(upload, storage, retrieval) for images/audio/video.

• Wrote RESTful API endpoints and implemented a CI/CD pipeline using GitHub Actions to automate build and deployment, demonstrating an understanding of modern engineering workflows.

• Developed a console-based java telephone directory application

• Designed and developed a bespoke Wristwatch E-Commerce Website using HTML5, CSS3, JavaScript, AngularJS, and Bootstrap, delivering responsive UI/UX, product display modules, and a dynamic shopping cart interface.

• Developed a console-based java class attendance system

• Designed and developed a Full-Stack Car Rental Website using Java, Spring Boot, Git, HTML5, CSS3, Bootstrap, JavaScript, AngularJS, and MySQL, providing secure user authentication, vehicle management, and payment integration.

• Designed and developed a cross-platform C++ command-line application for managing users, attendance records, and task assignments with role-based access control.

• Strengthened practical understanding of C++ CLI application design, system-level thinking, and software engineering best practices, demonstrating strong willingness and ability to learn new technologies.