Diamond Icon with CC

CELINA

Full-Stack Developer

Open to Work

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I'm a Full Stack Developer with proven experience building scalable web and mobile applications using React, Next.js, React Native, Node.js, and TypeScript.

Skilled in delivering end-to-end solutions — from UI implementation to backend API development — with expertise in both PostgreSQL and MongoDB. Strong focus on performance optimization, security best practices, and seamless collaboration.

Experienced in containerization with Docker, API documentation with Swagger, and modern state management. Also a graphic designer — brand identity, logos, and UI/UX design.

Unique journey: from Microbiology to Full Stack Developer — I love complex problems.

4+
Years Exp.
2
Companies
10+
Projects
Nigeria
Based
Celina Apu - Full Stack Developer
⚡ Full Stack Dev
🟢 Available
Technical Skills

My Stack

Everything I use to build production-grade applications

Languages

JavaScriptTypeScriptHTML5CSS3

Frontend

React.jsNext.jsReact NativeReduxZustandTanStack QueryReact Hook FormContext API

Backend

Node.jsExpress.jsNest.jsRESTful APIsSwagger

Database

MongoDBMongoosePostgreSQL

DevOps & Tools

DockerGitGitHubGoogle AnalyticsSentryPostmanViteESLint

Security & Validation

JWTbcryptCORSHelmetJoiZod

CMS & Website Builders

WordPressElementorGutenberg

Design & Styling

Tailwind CSSNativeWindFigmaAdobe PhotoshopAdobe IllustratorCanvaResponsive DesignBrand Identity
Work History

Professional Experience

Frontend Developer

Arya Realties / Kendee

Jul 2025 – Nov 2025Contract
  • Engineered responsive UIs from Figma designs using Next.js 15, React 19, TypeScript
  • Integrated RESTful APIs via Swagger contracts with TanStack Query + Zustand
  • Implemented Google Maps, i18n multi-language, Web3/WalletConnect
  • Maintained code quality with Jest testing and Husky pre-commit hooks
  • Implemented Google Auth, Sentry monitoring, and Google Analytics
Next.js 15React 19TypeScriptTailwind CSSTanStack QueryZustandRadix UIJest

Frontend Developer

Kraftaa

Mar 2025 – Jun 2025Contract
  • Built and maintained production marketplace features for real users
  • Led TypeScript adoption reducing API error rates by ~15%
  • Improved frontend performance and code maintainability
  • Collaborated with backend team on REST API integrations
ReactTypeScriptNode.jsExpress.jsMongoDBREST APIs
Highlights

My Journey

Reduced API integration errors by ~15% through TypeScript adoption at Kraftaa

🏗️

Built scalable marketplace platforms at Kraftaa serving real production users

🔐

Implemented Google Auth, SEO, Sentry monitoring & analytics at Arya Realties

🌍

Integrated Google Maps, i18n multi-language support, and Web3/WalletConnect

📱

Built cross-platform mobile apps with React Native and Expo

🎨

Graphic designer — logos, banners, social media assets, brand identity

🧬

Unique journey: from Microbiology to Full Stack Developer — I love complex problems

🚀

Shipped production apps end-to-end: from database design to deployment

Current Focus

What I'm Working On

Currently open to new opportunities — actively applying to full-stack and frontend roles globally. I'm focused on deepening my expertise in real-time systems with Socket.io, mobile development with React Native, and building more full-stack SaaS products. I recently completed Workspace Cypress — a Notion-inspired collaborative document platform with real-time editing, Stripe billing, and NextAuth.

Let's Connect

Reach Me Out