I bridge the gap between abstract mathematical modeling and production-grade software architecture. With an M.Sc. in Applied Mathematics (Numerical Analysis) and a deep background in Full-Stack Development (MERN & PHP), I design, optimize, and deploy secure, scalable software systems alongside high-performance computational algorithms.

• Full-Stack Engineering: Architecture of robust monolithic systems via PHP and scalable decoupled single-page applications (SPAs) via React and Node.js.
• Database Design & Performance: Designing relational database schemas in MySQL and document-oriented models in MongoDB, optimized for high read/write frequencies.
• API Development & System Integrations: Building standard RESTful APIs, securing endpoints (JWT, OAuth), and structuring microservices that handle intensive server-side workloads.
• Modern Web Workflow: Professional use of Git/GitHub version control, package management (NPM, Composer), asynchronous task handling, and server deployment.

• Numerical Analysis: Direct and iterative solvers for linear systems, matrix decompositions (LU, QR, SVD), and numerical integration.
• Differential Equations: Modeling physical and stochastic systems using custom Finite Difference Methods (FDM) and Runge-Kutta variations.
• Scientific Computing: Vectorizing data loops to optimize computational runtime and using web stacks to build browser-based mathematical visualization wrappers.

├── Full-Stack Development │ JavaScript (ES6+), React.js, PHP, Node.js, Express.js
├── Databases & Storage    │ MongoDB, MySQL, Redis, JSON Parsing
├── Academic & Math        │ NumPy, SciPy, Matplotlib, MATLAB / GNU Octave, R Programming
└── Dev Tools & Lifecycle  │ Git, GitHub, RESTful APIs, Postman, Linux Bash Shell

• Developed and deployed production-grade web applications utilizing PHP/MySQL for secure data processing and dynamic user experiences.
• Architected end-to-end full-stack web platforms via the MERN Stack, implementing secure JWT authentication, state management, and real-time database reactivity.

• Developed a responsive web dashboard using React.js to visualize real-time solutions for Ordinary Differential Equations (ODEs).
• Integrated a high-performance Python (SciPy) computational engine on the backend, spawned dynamically via Node.js child processes to execute Runge-Kutta algorithms.

• Built a suite of custom MATLAB/GNU Octave and R scripts executing custom algorithms for numerical linear algebra solutions (Ax = b).
• Implemented convergence tests and benchmarked optimization metrics, comparing native array loops against vectorized operations.

• Active Goal: Transitioning into an M.Phil./Ph.D. research track focusing on Computational Mathematics and Advanced Numerical Methods.
• Open to: Software engineering roles, technical writing, or interdisciplinary collaborations involving scientific software design and quantitative simulation.

📫 Let's Connect: oluwakejionabajo@gmail.com | https://www.linkedin.com/in/oluwakejionabajo