Guy Leroc ossebi

• At Network Service Solutions (NSS), I have been involved in a variety of development projects that highlight my technical skills and dedication to providing innovative solutions.
• One of my primary responsibilities was the development of the NSS Customer Portal. This project involved implementing a robust authentication and authorization system using Spring Security, with Spring Boot powering the backend and Thymeleaf for the frontend engine.
• My focus was on ensuring the security and functionality of the portal, allowing users to access only their specific company data. This was achieved by securing the controllers and endpoints on the backend, alongside additional security measures on the frontend.
• In addition to the Customer Portal, I developed an API for one of our customers using Node.js, which I secured with an API key. This task not only demonstrated my ability to manage backend services but also underscored my skills in ensuring data security and integrity across platforms.
• Moreover, I worked with various APIs to enhance our service offerings, including the Google Maps API and Rain View API for displaying rain overlays, and WeatherAPI for building comprehensive weather forecasting tools.
• I also took on the responsibility of styling these applications using Tailwind CSS, which allowed me to ensure that our applications were not only functional but also visually appealing.
• These projects at NSS have been integral to my professional development, allowing me to refine my skills in both front-end and back-end development while contributing to the company's mission of delivering high-quality, secure, and efficient networking solutions.

Co-founded and led development of responsive cooking tutorial web application delivering foundational skills through video lessons, AI-generated articles, and interactive quizzes.

• Architected Node.js + Express REST API utilizing YouTube Data API v3 for metadata and transcripts, managing course storage in Azure SQL Database with CRUD endpoints.
• Automated content creation pipeline by parsing YouTube transcripts, drafting step-by-step articles and quizzes with in-house GPT, storing results as JSON for front-end rendering.
• Implemented secure authentication flow including user registration, login, refresh tokens, and role-based access using JWT, bcrypt password hashing, and middleware guards.
• Designed single-page React interface with dynamic sidebars, searchable course catalog, and real-time validation; achieved mobile-first Lighthouse score exceeding 90.
• Containerized frontend and backend using Docker, deploying to Azure App Service while integrating Azure Blob Storage for scalable media assets and CI/CD via GitHub Actions.
• Practiced Agile Scrum methodologies through two-week sprints, Jira boards, sprint reviews, and retrospectives with five-member team; created personas, wireframes, ERDs, and sequence diagrams.
• Developed skills in full-stack JavaScript development, RESTful API design, cloud-native deployment on Azure, secure authentication, automated content generation with LLMs.

• Logged and tracked reported issues to onsite tech and vendors.
• Identified new and emerging threats and built and executed required action plans.
• Analyzed requirements, provided estimations and tested conditions and scripts to address business and technical use cases.
• Communicated technical information to non-technical users with clarity.
• Enforced antivirus and network security systems and policies to prevent compromises and hacks of workstations and hosted devices.
• Troubleshot program and system malfunctions to restore normal functioning.
• Enhanced functionality by installing new systems and updating existing platforms.
• Supported users with technical troubleshooting and software updates.
• Tested, maintained and monitored computer programs and systems, including coordinating installation of computer programs and systems.

• Provided technical support to the restaurant staff on all hardware and software systems, including point-of-sale systems, payment processing systems, and kitchen display systems.
• Troubleshot and resolved technical issues related to the restaurant's technology systems, including hardware, software, and network issues.
• Assisted with the installation and setup of new technology systems, including hardware and software, as needed.
• Trained restaurant staff on the proper use and maintenance of technology systems to ensure maximum efficiency and productivity.