Timilehin
Afolayan
I build secure, scalable systems and detect vulnerabilities before attackers do.
About Me
Dedicated Software Engineer and Cybersecurity Specialist with over 6 years of experience in backend development, system design, identity management, and AI-driven engineering workflows. Proven ability to build robust, scalable applications, design complex database schemas, and optimize workflows using Python, JavaScript, TypeScript, C#, and SQL.
Adept at leveraging LLMs and coding agents to accelerate development without sacrificing code correctness or security. Strong communicator with a deep understanding of software architecture, API integrations, and secure engineering practices.
Education
Work Experience
- Design, build, and maintain scalable backend systems and integrations frameworks using Python, JavaScript, TypeScript, and C#.
- Utilize AI coding agents to rapidly prototype and ship production features across backend systems, ensuring high standards of testing, observability, and code quality.
- Architect complex database schemas in SQL and NoSQL to support large-scale data ingestion, threat tracking tools, and real-time analytics platforms.
- Conduct rigorous code reviews, debugging, and testing in production environments to identify edge cases, logical flaws, and inefficiencies.
- Collaborate with cross-functional teams to design API layers, identity management solutions, and agentic tool-use interfaces.
- Develop custom tracking and analytics tools, optimizing workflows and translating complex data into actionable insights.
- Implement detection algorithms and automated scripts to monitor system health and network activities.
- Manage short-term and long-term engineering projects, taking ownership of the full software development lifecycle from conception to deployment.
GitHub Projects
All public repositories from github.com/afollytimi
Brute Force Attack Investigation
PythonA comprehensive cybersecurity investigation project that analyzes SSH authentication logs to identify brute force attack patterns. Uses Python to generate realistic log datasets, extract attack indicators, and produce visualizations of attack timelines, source IPs, and targeted accounts.
- Identified primary attacker IP with 800+ failed attempts
- Detected coordinated attack windows (22:00–01:00 UTC)
- Visualized attack patterns with matplotlib charts
CommBank Goal Tracker (Web)
TypeScriptA React/TypeScript frontend application built as part of the Commonwealth Bank Software Engineering Job Simulation on Forage. Implements a goal tracking interface with Redux state management and a clean, accessible UI.
- React/Redux frontend with TypeScript
- Forage Commonwealth Bank simulation
- Clean component architecture
CommBank Goal Tracker (Server)
C#A .NET C# backend server built as part of the Commonwealth Bank Software Engineering Job Simulation. Implements RESTful API endpoints, unit tests, and backend logic for the goal tracking application.
- .NET backend with C# REST API
- Unit test coverage
- Forage Commonwealth Bank simulation
Skyscanner Ad Platform
TypeScriptA TypeScript/React advertising platform UI built for Skyscanner's Software Engineering Job Simulation (Task 4). Includes ad creation flows, analytics dashboards, feedback survey interfaces, and JIRA user stories.
- Ad creation and analytics dashboard UI
- JIRA story planning included
- Forage Skyscanner simulation
Flightscry — Android Flight Itinerary
KotlinAn Android proof-of-concept mobile application built using Kotlin and Skyscanner's Backpack UI library. Displays a complete flight itinerary across five information cards including flight details, route overview, departure, arrival, and passenger information.
- Built with Skyscanner's Backpack Android library
- Five-card flight itinerary layout
- Kotlin + Android SDK API 33
Cryptocurrency Price Forecasting
PythonA machine learning project applying SARIMAX time series forecasting to predict Bitcoin prices. Uses Yahoo Finance API for historical data retrieval, performs seasonal decomposition, and produces 60-day forecasts with confidence intervals.
- SARIMAX model with MAE: 2515 and RMSE: 3435
- 60-day Bitcoin price forecast
- Seasonal decomposition + visualization
Server Hardening Project
Shell/LinuxA cybersecurity project focused on Linux server hardening techniques. Covers security configuration, access control, firewall rules, and best practices for reducing attack surface on production servers.
- Linux server security configuration
- Access control and firewall hardening
- Attack surface reduction techniques
Skills
Professional & Soft Skills
Identity & Security
.NET & Web Development
Mobile & Microservices
AI & Data Engineering
Certifications
Google Cybersecurity
CompTIA Security+
Cybersecurity Analyst Job Simulation
Identity & Access Management, IAM Strategy Assessment, Custom IAM Solutions, Platform Integration
Software Engineering Job Simulation (Commonwealth Bank)
.NET Backend, React/Redux Frontend, Client Requests, Unit Testing, Pull Requests
Software Engineering Job Simulation (Skyscanner)
Backpack React Web App, Microservice Architecture, Mobile Flight Itinerary, User-Friendly Platform
Advanced TEFL
Get In Touch
I am currently open to new opportunities in software engineering and cybersecurity. Whether you have a project in mind, a role to discuss, or simply want to connect — my inbox is always open.
Let's Build Something Secure & Scalable
Available for full-time roles, contract work, and consulting in software engineering, backend development, and cybersecurity.
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