Custom business applications
CRM, quoting, order-management, logistics and production tools built around company-specific workflows.
PHP · Laravel · REST APIs · Integrations
Senior PHP & Laravel Backend Developer
I build and modernize backend systems behind real business processes: ecommerce, CRM, order management, logistics, production, integrations and data synchronization. A large part of my work starts from an existing PHP codebase rather than a blank repository.
Backend expertise
Where I usually contribute
REST APIs & third-party services
API design and integration with payment providers, advertising platforms, messaging services and external systems.
ERP & data integration
Products, orders, customers, inventory and operational data moved reliably between ecommerce and business software.
Legacy modernization
Progressive upgrades of PHP, Laravel and Zend/Laminas applications while preserving business-critical behaviour.
Queues, cron & synchronization
Imports, exports, background processing, retries, reconciliation and scheduled data flows.
Production troubleshooting
Understanding unfamiliar business logic and fixing existing systems without treating a rewrite as the default answer.
Real backend applications
Concrete systems, workflows and interfaces
These are not demo projects. They come from production applications and internal business software developed for real operational workflows.
PWA · OFFLINE-FIRST · INDEXEDDB
Mercury PWA — offline-first field sales
I designed the discount engine and offline-first cart. A sales agent can select a customer, browse a pre-cached catalog, build the cart and confirm the order without connectivity. Pending orders synchronize automatically when the network returns.
- • Offline catalog: categories, price lists, product data and thumbnails cached for field use.
- • Offline cart and orders: customer selection, order lines, totals/VAT and a local pending-order queue.
- • Promotion engine: multiple discount families, thresholds and priority rules evaluated at line level.
- • Visits and notifications: visit planning, outcomes/notes and end-of-shift reminders for missed visits.
- • Deferred synchronization: local persistence in IndexedDB and automatic data exchange when connectivity returns.
StackJavaScript, IndexedDB, Service Worker, Web App Manifest
Key featuresOffline catalog, cart, promo engine, sync
RoleAnalysis, development, offline UX
PUSH · QUEUES · BUSINESS EVENTS
Business application — push notification module
Push notification system integrated into a management application, with device subscriptions, topic segmentation, dynamic templates and reliable delivery through queued jobs with retry/backoff.
- • Channels: Web Push (VAPID/FCM), with optional email/WhatsApp fallback.
- • Business triggers: orders, low stock, invoices and visit deadlines.
- • Template: dynamic placeholders, preview and test sending.
- • Reliability: job queues, exponential retry, deduplication, rate limiting and delivery logs.
- • Preferences: opt-in/opt-out, quiet hours, digest.
Stack: PHP (Laravel/Laminas), FCM WebPush (VAPID), Service Worker, Redis Queue.
Business software
Production, logistics and booking systems
LAMINAS · MAGENTO SYNC · PRODUCTION
TNK Motors — warehouse & production management
Custom Laminas application covering simple and assembled products, Magento catalog/order synchronization, component analysis, production operations and delivery-time forecasting.
- • assembled-product BOM/component availability
- • combined component analysis across multiple orders
- • what-if production simulation, lead times and batch capacity
- • production orders, supplier workflows and WIP allocation
ZEND / LAMINAS · BOOKING · BILLING
Vehicle rental booking system
A custom booking platform for car, motorcycle and bicycle rental: pickup/drop-off selection, vehicle class, optional extras and driver data on the public side, plus rates, coupons, bookings, invoicing and branch commissions in administration.
Built on an older Zend codebase; retained here as evidence of long-term custom backend and legacy-system experience.
RFC · LOGISTICS BILLING
Logistics billing and carrier-cost management
Custom software for logistics companies that import carrier shipment reports, apply customer-specific sales price lists and prepare outgoing billing from large monthly shipment datasets.
Recent modernization
Laravel 6 → Laravel 12 CRM
A recent example of incremental modernization: framework and dependency upgrades while the live application continued to evolve with GA4/Google Ads attribution, PayPal payments and Meta API integrations.
Need backend capacity on a real system?
I can join an existing team or take ownership of a defined integration, modernization or backend workstream.
Discuss a project