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Onome Osika

Onome Osika

Senior Frontend Engineer & Creative Designer · Dublin, Ireland

Profile

Senior frontend engineer with 5+ years building scalable web applications and leading teams. Specialises in React and Next.js architecture, TypeScript and responsive, accessible UI. Track record in performance optimisation, full-stack feature delivery and mentoring junior developers. Also works as a creative designer across social, campaign and retail signage design.

Experience

  1. Senior Frontend Engineer, JL13 Concepts

    Sep 2023 – Present · Remote (Canada)

    • Frontend infrastructure for 4 SaaS products and internal tools: landing pages, dashboards and community platforms.
    • Private communities, automated workflows and demo booking with React, Shadcn UI and custom hooks.
    • Internal CRM dashboard with ApexCharts and Azure SSO: 50+ internal users, 99.2% uptime.
    • Cloudflare CDN and lazy loading: 40% reduction in time-to-interactive.
    • JWT/OAuth authentication patterns shared across products.
  2. Frontend Engineer & Design Lead, ConnectAfrobeats

    Aug 2024 – Sep 2025 · Remote

    • Led development of a social network platform (chat, feed, content creation) in Next.js and TypeScript.
    • Zustand + TanStack Query architecture: 30% reduction in initial load time; Core Web Vitals score 62 → 85 (mobile).
    • Google Sign-in, JWT and Paystack integration.
    • UI redesign with Tailwind and Shadcn UI to WCAG 2.1 AA, for a platform with 1K+ active users.
    • Cross-functional delivery.
  3. Head of IT, Thummim Nigeria & Kenya

    Jan 2022 – Sep 2025 · Full-time

    • IT operations and frontend for regional offices, on platforms serving 15K+ users.
    • Custom WordPress plugins (PHP, REST API): 60% reduction in content management time.
    • Cloudflare CDN and JWT; infrastructure, scaling and support process improvements: support response time 8hrs → <2hrs, 99% uptime.
    • Mentored junior developers and set coding standards.

Frontend

  • React
  • Next.js (SSR/SSG)
  • TypeScript
  • JavaScript (ES6+)
  • HTML
  • CSS
  • SASS

UI

  • Tailwind CSS
  • Shadcn UI
  • Material UI
  • Responsive design
  • WCAG accessibility

State & data

  • Zustand
  • TanStack Query
  • REST APIs

Backend & auth

  • Node.js
  • MySQL
  • JWT
  • OAuth
  • Google Sign-in
  • Azure SSO

Platform

  • Cloudflare CDN
  • Core Web Vitals
  • SEO
  • Schema markup
  • Paystack

CMS & mobile

  • WordPress (themes, plugins)
  • Flutter

Design

  • Social media and campaign creative
  • Event creative
  • Digital and physical signage
  • Short-form video (reels)

Education

  • Higher Diploma in Cybersecurity, City College Dublin (Sep 2025 – Present)
  • Advanced Diploma in Software Engineering (Distinction, Scholar Award), Aptech Computer Education, Lagos (2016 – 2018)