Hi, my name is

Walid Kini

Backend Engineer · SaaS / Platform

I build SaaS and platform systems for e-commerce and marketplace products, with a focus on APIs, integrations, asynchronous workflows, and reliable data systems.

Resume
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About

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Backend engineer building SaaS and platform systems for e-commerce and marketplace products.

Focused on APIs, integrations, asynchronous workflows, and reliable data systems, with experience across backend-heavy full-stack applications.

Core technologies

  • Backend:

    • Python (FastAPI, Django)
    • PHP (Laravel)

  • Frontend:

    • React
    • Tailwind CSS

  • Data & Messaging:

    • MySQL
    • PostgreSQL
    • MongoDB
    • Redis
    • RabbitMQ
    • Celery

  • Infrastructure:

    • AWS
    • Docker
    • Terraform

Experience

Backend Engineer - xPage
Jun 2025 – Present
  • Designed and delivered Laravel APIs and backend workflows for xPage’s multi-tenant e-commerce monolith.
  • Built full-stack Shopify and COD Network integration apps with Python/FastAPI and React.
  • Built an order synchronization workflow between xPage and Google Sheets for reporting and merchant operations, using Celery.
  • Built an affiliate & payout system in Laravel/PHP covering onboarding, commission tracking, deduplication, and disbursement workflows.
  • Built Python microservices for import processing, email workflows, video processing, and GeoIP-based backend tasks.
  • Additional technologies: RabbitMQ, Celery, GraphQL, AWS, Redis, MySQL, PostgreSQL, MongoDB, Docker.
Backend Engineer - Izberg (by Lundi Matin)
Mar 2024 – Feb 2025
  • Worked on Izberg, an API-first SaaS marketplace platform for B2B and B2C commerce.
  • Contributed to the migration from third-party search SaaS to a self-hosted Elasticsearch cluster serving ~100k products.
  • Worked on index design, relevance tuning, and synonym pipelines to improve search control and observability.
  • Helped reduce recurring infrastructure costs by moving search in-house.
  • Developed backend services in Django (monolith) and Flask (microservices).
AI Engineer Intern - SBM Offshore
Apr 2023 – Sep 2023
  • Built a retrieval-augmented chatbot over internal engineering and research documentation using FAISS and LangChain.
  • Implemented document chunking, embedding and retrieval pipelines, and source citation for document question answering.
  • Evaluated Azure OpenAI and open-source LLMs including Falcon and LLaMA for response generation and summarization prototypes.
Backend Developer Intern - Zaion
Feb 2022 – Oct 2022
  • Built backend integrations for enterprise callbot workflows, connecting external APIs to client-specific conversational use cases.
Full-Stack Developer Intern - Besteam-Conseil
Jun 2021 – Sep 2021
  • Built authenticated features for a serverless financial dashboard using Next.js, AWS Cognito, and Terraform-managed AWS infrastructure.

Education

2019 - 2023
Engineering Degree in Computer Science
Bordeaux INP — ENSEIRB-MatMeca

General computer science curriculum with strong foundations in databases, distributed systems, operating systems, networking, compilers, and algorithmic problem solving.

Completed a final-year specialization in Artificial Intelligence, focusing on machine learning and research-driven methodologies.

2017 - 2019
CPGE Preparatory Classes MP (Mathematics-Physics)
Lycée CPGE Reda Slaoui
Intensive preparation in advanced mathematics (analysis, linear algebra, probability) and physics.

Projects

OrderSync Engine
FastAPI Celery Redis MongoDB Google Sheets
OrderSync Engine
Multi-tenant synchronization engine. Ingests order data from external e-commerce APIs and webhooks, transforming and syncing it to Google Sheets using dynamic scheduling and idempotent streaming execution.
Read full case study
Affiliate Commission & Payout System
Laravel MySQL Transactions Payouts Idempotency
Affiliate Commission & Payout System
Affiliate revenue system for an e-commerce platform, covering referral attribution, invoice-driven commission creation, approval windows, payout eligibility, and safe disbursement flows backed by transactional locking, idempotent safeguards, and schema-level constraints.
Read full case study

Get in Touch

I’m open to discussing Backend / DevOps roles, freelance work, or technical collaboration.

Email: walidkini99@gmail.com Phone: +212 6 44 35 66 61

Contact me