Charles Ejiegbu Email & Phone Number

Lagos State, Nigeria

- Developed the NASD mobile app, implementing key features and ensuring optimal performance for iOS devices.- Refactored legacy backend codebase by implementing proper caching strategies for frequently read data, worker threads for blocking and computationally intensive tasks and optimized database queries using aggregation pipelines to minimize load, reduce response times and improve overall system performance by 40%.- Collaborated with my team as the core backend developer to build a financial and securities Private Market for trading debt and equity instruments.

Lagos State, Nigeria

- Developed the LAWMA mobile App which helps users to monitor and report waste handling and disposal practices in their community, reducing occurances of illegal and irresponsible disposal of waste in the community by 15%.- Designed and developed an admin dashboard for analyzing and managing user data.- Rebuilt and optimized legacy applications to meet industry standards for SEO and Accessibility.- Setup CI/CD pipelines to streamline software development lifecycle.- Improved and extended test coverage on pre-existing applications using Jest for unit tests and Cypress for End-to- End tests.

Wilmington, Delaware, United States

- Designed and developed the ACOMART Retail mobile app for retailers and agents across Africa interested in partnering with ACOMART Media Group LLC, which expanded the company's reach by 25% and brought it closer to the end users.- Participated in the integration of OPay (Mobile Money Service), Tizeti (Broadband Internet Service Provider), & Safaricom (Telecommunications) across our various platforms.- Collaborated with a team of mobile engineers to develop the ACOMART Super app, a Video-On-Demand platform with a variety of content ranging from drama, comedy, to romance, adventure, horror, etc.- Led the product and mobile development team, while also collaborating with HISENSE's integrations team, to migrate the ACOMART Super app to HISENSE TVs running on the Vidaa operating system.

Lagos, Nigeria

- Introduced Kanban Board style ticketing system to promote highly efficient asynchronous and synchronous work, increasing team efficiency and reducing development time by 12%.- Setup design systems which maintained brand consistency throughout the design and development processes.- Implemented new responsive, mobile-first approach which increased mobile traffic and user conversion by 20%.- Assessed UX and UI designs for technical feasibility.- Collaborated with the design team to develop site-map guidelines and requirements to capture content, features and functionality for site development efforts.

Remote

- Collaborated with the team lead to build a database management system to backlog and store the profiles and results of every student ( past & present ) since the school's inception.- Implemented a website and landing pages, from concept to deployment, which expanded the reach of the school and resulted in 15% more Parents enrolling their kids.- Collaborated with the team lead to build internal tools that helped teachers to fast-track grading and compilation of their students' results.

Amuwo Odofin, Lagos, Nigeria