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Step 1
Clarify the Problem
Start with requirements, constraints, and risk. Define what must be protected, what can fail safely, and what matters most for users.
•Clear checkpoints for each phase
Hi, I'm
Lisi ZejnullahuLisi ZejnullahuLisi Zejnullahu
Backend-focused engineer building secure APIs, real-time systems, and production deployments. Focus areas include authentication, RBAC authorization, audit logging, and maintainable architecture across Laravel, Node.js, and Next.js.
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About Me
About Me
👨💻
My Story
Backend-focused engineer who enjoys turning complex requirements into clean, maintainable systems. Experience includes SaaS platforms and large-scale web systems using Laravel, React/Next.js, and Node.js. Strong emphasis on secure-by-default APIs, tenant-scoped access patterns, auditability, and deployment discipline.
3+
Years
50+
Projects
🎓
Education
Louisiana State University Shreveport (LSUS)
B.S. Cybersecurity & Networking (Transfer), In Progress
Expected 2026
Specialization:
Application Security, Secure Systems, Networking Fundamentals
Full StackCloud ArchitectureDevOps
Status
Available for Work
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Location
Louisiana
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Role
Full Stack Engineer
Technical Expertise
Technologies I Work With
Core Stack and Tools
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Security
Authentication (Laravel Sanctum)
Authorization (RBAC / scoped permissions)
Audit Logging
Input Validation
Rate Limiting / Abuse Controls
Secure API Design
6 skills
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Backend
Laravel 12
PHP
Node.js
Express
NestJS
Spring Boot
6 skills
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Frontend
React
Next.js
TypeScript
JavaScript (ES6+)
HTML
CSS
Tailwind CSS
7 skills
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Databases
MySQL
PostgreSQL
MongoDB
Redis
4 skills
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DevOps & Cloud
Docker
AWS
Terraform
DigitalOcean
GitHub Actions
CI/CD
Firebase
Stripe
Swagger/OpenAPI
9 skills
Work Experience
Engineering and Operations
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Stealth Startup
Nov 2024 – Dec 2025Full Stack Engineer (Contract)
Led backend architecture for a SaaS platform using Laravel 12 + Sanctum. Implemented scoped roles/permissions, audit logging, and consistent validation/error handling. Shipped real-time messaging with Redis + Socket.IO, push notifications via Firebase Admin SDK, and owned Dockerized deployments with GitHub Actions CI/CD.
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Freelance & Contract
Sep 2023 – PresentFull Stack Engineer
Delivered end-to-end web solutions including multi-tenant platforms and dashboards. Built reliable API layers, payments (Stripe), and automated deployment workflows with strong focus on maintainability, performance, and secure data handling.
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PONT
Jul 2024 – Sep 2024Full Stack Developer
Improved a React/TypeScript scheduling system by integrating DateRangePicker UX with navigation and auto-refresh. Refactored components for maintainability (type safety, i18n) and supported Docker Compose workflows for authentication services.
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BBros L.L.C
Aug 2023 – Feb 2024Web and Mobile Developer
Refactored a React Native app for performance and smaller bundle size. Improved backend efficiency via MySQL indexing and caching, reducing query time. Implemented push notification workflows to improve engagement and retention.
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INSITECH
Mar 2022 – Aug 2023Full Stack Developer
Helped launch React/Next.js/Node.js government portals used at national scale. Reduced response times from ~30s to under 1s through caching and database optimization. Built Laravel + Redis real-time messaging components and containerized services to modernize deployments.
Process
My Approach
How I Build Software
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Step 2
Design for Maintainability
Map out clean boundaries, predictable data flows, and scalable foundations. Prefer simple patterns that stay readable months later.
•Clear checkpoints for each phase
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Step 3
Build Secure Defaults
Apply consistent validation, authorization checks, and auditable actions. Keep APIs predictable, testable, and easy to reason about.
•Clear checkpoints for each phase
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Step 4
Ship and Iterate
Deploy with discipline, automate checks, and improve based on real usage. Reliability and security are ongoing work, not a one-time task.
•Clear checkpoints for each phase