BACKEND / INTEGRATIONS / INFRASTRUCTURE

Ali Almansaf

I build systems.And connect them.

From backend development to system integration and reliable operation.

Explore my work
Laravel.NETAPIDevOps

Selected Work

01 — SELECTED WORK
INSURTECH · INTEGRATIONS

Insurance Integration Layer

Worked on integrating multiple insurance-related service providers through a unified backend integration layer.

The challenge

Connect providers with different request formats and authentication requirements across multiple environments.

My contribution

  • REST and SOAP connectivity.
  • OAuth2, Basic Auth, certificates, mTLS, and IP allowlisting.
APIsmTLSSOAPOAuth2
More about this project
  • Canonical request/response mapping between internal and provider schemas.
  • Environment-specific connectivity across UAT, pre-production, and production.
02Café Pre-Order & Smart Menu PlatformArchitected a multi-tenant café ordering platform with customer ordering, real-time kitchen workflows, and administrative controls.Laravel / Reverb / RBAC

  • Multi-tenant backend and RBAC.
  • Real-time updates and queue processing.
  • Flexible payment modes and provider mapping architecture.
  • Operational dashboards and configurable tenant behavior.
LaravelReverbRBACSaaS
03Secure Reverse Proxy & mTLS ConnectivityConfigured and troubleshot secure outbound integrations using client certificates, reverse proxies, SNI, TLS, and firewall coordination.Nginx / TLS / Linux

INFRASTRUCTURE · NETWORKING

  • Nginx proxy configuration and certificate handling.
  • Connectivity troubleshooting with curl, nc, tcpdump, and route inspection.
  • Diagnosis of SYN timeouts, WAF rejections, and certificate negotiation issues.
  • Environment isolation and restricted application access.
NginxTLSLinuxtcpdump
04Private Document Storage ServiceImplemented a private object-storage approach for policy and customer documents using S3-compatible storage.MinIO / S3 / Security

STORAGE · DOCUMENTS

  • Private bucket strategy with versioning.
  • Presigned upload/download patterns.
  • Designed for large volumes of user-specific PDF documents.
  • Separation of application access from direct storage exposure.
MinIOS3SecurityPDF Storage

About

02 — APPROACH

I focus on backend development and system integrations, with hands-on experience building and integrating APIs, Webhooks, authentication flows, mTLS, and Reverse Proxy configurations, as well as working with Queues, Docker, databases, and UAT, Pre-Production, and Production environments. I aim to build systems that are structured, scalable, maintainable, and secure, while solving technical challenges across applications, networks, integrations, and infrastructure.

How I work

01

Understand the system

Map the requirements and the relationships between systems and services.

02

Build the integration

Design and develop flexible, maintainable solutions that can grow.

03

Support reliable operation

Monitor operation and diagnose issues to keep services dependable.

Technical Skills

Backend Engineering

Designing modular, maintainable backend applications and APIs.

PHP 8.xLaravelC#ASP.NET CoreREST APIs

Integration Engineering

Connecting external service providers securely and reliably.

OAuth2SOAPmTLSWebhooksCanonical Models

Architecture

Structuring platforms for multi-tenancy, extensibility, and scale.

Modular MonolithRBACMulti-TenantMapping EngineEvent-Driven

Data & Messaging

Reliable persistence and asynchronous workloads.

PostgreSQLRedisQueuesHorizonMinIO

Infrastructure

Application delivery, proxying, certificates, and Linux operations.

LinuxNginxApacheDockerTLS

Operational Engineering

Troubleshooting production-style systems across networks and services.

curltcpdumpFirewall DebuggingLogsAPM
Areas of Experience

Backend & Integration Engineering

Designing APIs, integrating external providers, building backend services, handling authentication models, mapping payloads, and coordinating technical onboarding across multiple environments.

Enterprise platforms and third-party services

Infrastructure & Connectivity

Supporting application delivery, secure service connectivity, reverse proxy configuration, certificate-based integrations, and network-level troubleshooting.

Linux · Reverse proxy · Firewall · TLS

SaaS & Platform Architecture

Designing modular systems with RBAC, queue processing, tenant isolation, dynamic configuration, provider abstraction, auditability, and extensible integration patterns.

Multi-tenant applications

Let’s build systems that behave.

I’m interested in backend engineering, integration platforms, API architecture, SaaS products, and infrastructure-heavy projects where reliability actually matters.

Tell me about your project. I’ll get back to you by email.

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