Md. Rakib Uddin Available for hire

Hello, I'm

Md. Rakib Uddin

Senior Laravel Backend & AI Application Engineer 8+ years · PHP · Laravel · Vue.js · REST APIs · Multi-Tenant SaaS · LLM Integration

I build production SaaS platforms and API-first backends — then extend them with LLM-powered features like assistants, semantic search and retrieval-augmented answers. Commercial products on CodeCanyon and Codester, plus live B2B and publishing platforms running today.

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0
Years in PHP / Laravel
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Commercial Products Published
0
Production Systems Delivered

What I Do

Backend Architecture, Shipped to Production

Eight years of Laravel systems that run every day for real businesses — multi-tenant SaaS with subscription billing, REST APIs, marketplaces and high-traffic publishing platforms. I model the domain properly, design API contracts that survive change, and own delivery through to deployment and post-release monitoring.

Multi-Tenant SaaS
Tenancy and data isolation, subscriptions and billing, roles and permissions, admin dashboards and customer portals — built as a well-bounded modular monolith, with service separation only where scale justifies it.
API Platforms & Integrations
Versioned, documented REST APIs with Sanctum/Passport auth, rate limiting and backward-compatible contracts. Payment gateways, webhooks and third-party services integrated cleanly.
AI Feature Development
Assistants grounded in your own data, RAG and semantic search with embeddings and pgvector, tool calling into your business logic — plus usage metering and cost control.
Performance, Security & Delivery
Query tuning, Redis caching and N+1 elimination; OWASP Top 10 hardening, RBAC and tenant isolation; Dockerised environments with GitHub Actions CI/CD, queue workers and zero-downtime deploys.

AI Engineering

Building AI Into Real Applications

LLM Application Integration
  • LLM APIs behind clean Laravel interfaces, so models stay swappable
  • Structured outputs and tool calling that trigger real business logic under validation
  • Token-cost, rate-limit, retry and fallback handling in queued background jobs
RAG & Semantic Search
  • Retrieval over documents, catalogues and internal databases with pgvector
  • Similarity search combined with SQL filters and permissions, so retrieval respects tenancy
  • Answers grounded in cited sources rather than free-running model output
Agents & Workflow Automation
  • Agentic flows with bounded loops and MCP-based tool integrations
  • n8n and webhook pipelines that classify, summarise, extract and route content
  • Human-in-the-loop checkpoints for anything that writes, spends or sends

Portfolio

Selected Work

Commercial products sold on CodeCanyon and Codester, plus live client platforms running in production today.

SaaS · CodeCanyon
PayLink
Multi-tenant Laravel SaaS for agencies and service businesses — invoicing, recurring billing, projects, assets and finance, sold on subscription.
Tenant-scoped data layer behind super-admin, company and client portals. Queued jobs and the scheduler drive recurring invoices; Stripe, PayPal and bank transfer handle billing. Sole architect & lead engineer.
LaravelMySQLMulti-TenancySubscriptionsStripe / PayPalQueues
View on CodeCanyon
POS · CodeCanyon
MB POS
Commercial multi-branch Point of Sale — inventory, sales processing, role-based access and reporting for retail businesses.
Laravel REST API with a Vue.js register SPA so the counter stays responsive. Per-branch stock moves through an append-only ledger, keeping transfers and concurrent sales consistent. Sole architect & lead engineer.
LaravelVue.jsREST APIMySQLSpatie Permission
View on CodeCanyon
LMS · CodeCanyon
LaraLMS
Learning management system with course authoring, enrolment, payments, quizzes, progress tracking and certificate generation.
Modular Laravel platform separating courses, payments, assessment and reporting, with admin/instructor/student roles and a quiz engine tracking attempts and grading rules. Sole architect & lead engineer.
LaravelMySQLPaymentsQueuesBootstrap
View on CodeCanyon
POS · Codester
DevinTime POS
Multi-store Point of Sale for retail chains — one shared catalogue, per-store stock and staff, consolidated reporting.
Laravel and Vue.js over a REST API, with store scoping enforced at the query layer so no endpoint or report can cross a store boundary. Sole architect & lead engineer.
LaravelVue.jsREST APIMySQLRBAC
View on Codester
B2B Marketplace
B2BMap
Live global B2B marketplace connecting suppliers and buyers through product listings, supplier discovery, inquiries and business messaging.
Laravel modular monolith with domain boundaries for catalogue, suppliers, inquiries and messaging. Indexing strategy, query restructuring and Redis caching keep discovery fast as listings grow. Lead engineer.
LaravelMySQLRedisREST APIQueues
Visit Live Site
B2B Portal
Textile Pages
Vertical B2B portal for the textile industry — manufacturers, suppliers and buyers with verified profiles and inquiry management.
Domain-specific catalogue schema using indexed attribute tables rather than a generic EAV structure, so new categories ship without schema rewrites. Lead engineer & project planner.
LaravelMySQLBladeRBACQueues
Visit Live Site
Also shipped High-traffic Laravel news platforms with a custom CMS, publish-triggered cache invalidation and queued media processing — Bangladesh24 · EditorsTime · NextNews24

Tech Stack

Tools & Technologies

Backend
PHP 8 Laravel REST API Design GraphQL Sanctum / Passport Queues & Jobs Events & Scheduling RBAC / Spatie Permission Multi-Tenancy
AI & LLM
LLM APIs OpenAI API Prompt Engineering Structured Outputs Tool Calling RAG Embeddings Semantic Search AI Agents MCP
Data
MySQL PostgreSQL Redis pgvector Query Optimisation Indexing Strategy Caching Strategy
Frontend
Laravel Blade — primary Vue.js JavaScript HTML5 / CSS3 Bootstrap React.js TypeScript
Delivery & Automation
Docker Git GitHub Actions CI/CD Nginx DigitalOcean n8n Webhooks Payment Gateways
Architecture
Clean Architecture SOLID Design Patterns Modular Monolith Event-Driven Architecture API-First Design OWASP Top 10

Get In Touch

Let's Work Together

Open to remote, full-time and contract roles with US and EU teams — Senior Backend Engineer, Senior Laravel Engineer, AI Application Engineer or SaaS engineering. Happy to talk through an architecture problem before any commitment.

rakibuddin101@gmail.com +88 01917948316 github.com/rakibuddin101 Dhaka, Bangladesh Download Resume