You will get a fast, responsive React.js single page application built to spec

Younes B.Status: Offline
Younes B.

Let a pro handle the details

Buy Web Application Programming services from Younes, priced and ready to go.
Younes B.Status: Offline
Younes B.

Let a pro handle the details

Buy Web Application Programming services from Younes, priced and ready to go.

Project details

I build React front ends that stay fast and maintainable as they grow, not just pretty on day one. Using functional components, hooks, and a sensible state management setup (Context, Zustand, or Redux depending on scope), I turn your designs or wireframes into a production-ready SPA with clean routing, form validation, and error handling. I've built everything from marketing landing pages to internal dashboards pulling live data from REST or GraphQL APIs. You get responsive layouts that work on mobile, readable component structure your next developer won't have to untangle, and deployment help on Vercel, Netlify, or your own infrastructure.
Programming Languages
JavaScript, TypeScript
Coding Expertise
Security
What's included
Service Tiers Starter
$89
Standard
$250
Advanced
$600
Delivery Time 3 days 7 days 14 days
Number of Revisions
123
Number of Pages
148
Design Customization
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Content Upload
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Responsive Design
Source Code
Younes B.Status: Offline

About Younes

Younes B.Status: Offline
Spring Boot Backend Engineer | Secure APIs, OAuth2/Keycloak, Fintech
Casablanca, Morocco - 8:18 pm local time
I build and secure Spring Boot backends for fintech and SaaS teams — OAuth2/Keycloak auth, payment flows, and APIs that survive a real pentest. Day job: secure banking microservices at a Moroccan bank. Nights: bug bounty hunter on HackerOne and Bugcrowd.

Most Spring Boot APIs I'm called in to look at fail on the same handful of things: refresh-token rotation misconfigured in Keycloak, IDOR on resource endpoints because authorization is checked at the controller instead of the data layer, JWT validation that trusts the alg header, and multi-tenant queries missing a tenant filter. I find these for a living on both sides — I write the code and I break it.

What I do:
- Spring Boot 3 / Java 21 REST APIs — clean domain modelling, virtual threads where they earn it
- Spring Security: OAuth2, JWT, Keycloak realms, RBAC, multi-tenant isolation
- Security review of an existing Spring codebase — OWASP API Top 10, written report with reproduction steps and patches
- Angular / Next.js front ends when you need one hand on the whole stack

Background: Senior engineer in a bank's digital factory, working on payment and fraud-adjacent microservices. Independent security researcher. Java/Spring core with Docker, Kubernetes, and CI/CD.

Send me your repo or your problem and I'll tell you straight whether I'm the right fit before you spend a dirham.

Steps for completing your project

After purchasing the project, send requirements so Younes can start the project.

Delivery time starts when Younes receives requirements from you.

Younes works on your project following the steps below.

Revisions may occur after the delivery date.

Component build & state wiring

I break down your design into reusable components, wire up routing and state management, then connect to your API endpoints with proper loading and error states.

Review the work, release payment, and leave feedback to Younes.