Senior Frontend Engineer | Information Security Engineer
Based in the UK, I focus on building secure, reliable, and scalable software systems.
I bring 7+ years of software engineering experience combined with expertise in application security, DevSecOps, and CI/CD practices, helping teams deliver robust and secure products.
- Frontend Engineering: React, React Native, Next.js (App Router), TypeScript, Tailwind CSS, shadcn/ui
- Architecture & Performance: Scalable UI systems, optimisation, and accessibility
- Secure Software Practices: Application security, CI/CD, cloud compliance, incident response
- Collaboration & Mentorship: Engineering facilitator, team mentor, and workshop leader
Here are some pinned projects that reflect my focus on scalable SaaS, security, and frontend excellence:
- Identity Management Application – Multi-tenant React.js application with modern tooling and secure APIs for managing over 20+ million identity records
- Lending SaaS Application - React/NextJS/Remix Core Application suite using Module federation and monorepo, improving reusability and code overall developer experience
- Security Tools & Dashboards – Visualising compliance and incident response data using Office 365 (Microsoft Defender) and Drata (ISMS)
- Open Source Contributions – UI components, security research, and redis tooling
(Check pinned repositories below for details.)
- Languages: TypeScript, JavaScript, C++ (familiarity), Python (scripting/automation)
- Frontend: React, Next.js, Tailwind, shadcn/ui, Vite, TanStack Query
- Backend & Infra: Docker, Azure, Node.js APIs
- Security: Threat modelling, OSINT, OWASP Top 10, Burp Suite, Secure coding, EDR & Compliance monitoring
- LinkedIn: Joshua OA
- Portfolio: oluwafemi-ayo.web.app
⚡ I’m always open to opportunities where I can combine my frontend expertise with security-aware engineering to build impactful products.