Justice Royale
Hi, I’m Justice, a senior full-stack engineer with 6+ years of experience building and maintaining production web applications, with strong backend depth across API design, database modeling, integrations, and scalable feature delivery.
I’ve worked extensively with Laravel/PHP, Node.js, Vue, React, MySQL, Redis, queues, background jobs, and third-party integrations. I’m especially comfortable owning backend-heavy systems end to end: designing the architecture, implementing the core logic, handling edge cases, improving reliability, and communicating trade-offs clearly.
What stood out to me about this role is the need for someone who can think beyond tickets and take ownership of core product systems. That matches how I like to work. I’ve shipped features independently, collaborated closely with founders and product teams, and taken responsibility for clean handoffs, maintainability, and production outcomes.
I also have experience working on subscription/payment flows, API-driven applications, structured data handling, and performance-sensitive backend logic, which aligns well with your work around workout/nutrition engines, mobile-facing APIs, and integrations like Stripe, RevenueCat, Zendesk, and nutrition APIs.
I’d be excited to contribute as part of a focused in-house contractor team, especially in a growth-stage environment where speed, judgment, and ownership matter.
REVIEWS FROM CLIENTS
- Architected and implemented a robust order management system, that reduced processing time by 40%
- Developed enterprise ma...
- Architected and implemented a robust order management system, that reduced processing time by 40%
- Developed enterprise market features supporting 100s of concurrent users with 99.9% uptime
- Engineered call-center assisted transaction system which led to increase in customer usage by 30%
- Implemented secure market verification system and credit allocation engine
- Wrote feature-rich API endpoints for the frontend and backend
- Wrote feature and unit tests for the backend
- Configured ShadCN to implementation custom design system, improving the UI/UX
- Collaborated with hybrid teams across Kenya and Nigeria
- Built a custom SMTP server for the KadMap ecosystem
- Built the KadMap Auth Service for the KadMap ecosystem
- Built ...
- Built a custom SMTP server for the KadMap ecosystem
- Built the KadMap Auth Service for the KadMap ecosystem
- Built the KadMap Directory Service for the KadMap ecosystem
- Built the KadMap Master Licensing Service for the KadMap ecosystem
- Built the KadMap Connect App for the KadMap ecosystem
- Provided technical support to the KadMap ecosystem
- Implemented the backend for the KadMap Website
- Customized open source software to fit the KadMap ecosystem
Xradar360 enables project owners to construct infrastructure & purchase property securely through; real-time project monitoring re...
Xradar360 enables project owners to construct infrastructure & purchase property securely through; real-time project monitoring reports, escrow payments, verified experts & site resource database, team collaboration tools, and much more
On this project I:
- spearheaded the design and development of an end-to-end infrastructure project monitoring system.
- Refactored legacy codebase to eliminate bottlenecks.
- Implemented new features including geolocation, multi-currency wallets, escrow facilities, etc.
- Implemented the backend API using PHP and the Laravel framework.
- Implemented the web client using HTML/CSS, JavaScript, Vue.js, and Nuxt.js.