Pierre Dinh
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Pierre Dinh

Freelance backend developer — PHP, APIs & integrations

France · Remote · dinh.pierre@gmail.com · https://dinh-pierre.fr

I develop and maintain PHP backends, connect applications through APIs, and build business tools. My experience spans payment systems at Nexway, cruise booking at Cruisetech and product data at Torbel. I also work on recurring payments and payment provider integrations.

Highlights

  • 10+ years of backend development experience
  • Payment platforms, travel booking and industrial business systems
  • PHP, Symfony, Slim, REST/SOAP APIs and SQL
  • Business application maintenance and incident investigation

Stack

PHP · Symfony / Slim · REST / SOAP APIs · MySQL / MariaDB · JavaScript · PIM / ERP integrations · Payments · Docker · Git / GitLab

PSP & platforms

NomuPay, Unlimit, Ebanx, Sogecommerce, Checkout, PayU India, Stripe.

Experience

  • PHP Backend Developer — Payments & fintech

    August 2021 — Present

    Nexway — Nîmes, France

    Development and maintenance of a high-volume international fintech platform hosted on Google Cloud, at the core of payment and billing flows.

    • Integrated international payment service providers and secured recurring payments (CIT/MIT), tokenization, 3DS v2, webhooks, refunds, and cancellations.
    • Developed REST APIs and critical backend services; investigated complex incidents through logs, PSP requests, and transaction states.
    • Contributed to the retry engine: attempt tracking, card fingerprint blocking rules, Account Updater, and retry strategies.
    • Improved resilience, idempotency, monitoring, and performance with Product, QA, Support, Finance, and external partners.

  • PHP Web Developer — Reservations & APIs

    August 2019 — August 2021

    Cruisetech — Monaco

    At Cruisetech, development for a cruise booking client of reservation platforms and business back-office tools hosted on Amazon Web Services (AWS), with a focus on reliability and performance.

    • Developed and maintained REST APIs with Symfony, PHP, and MariaDB, documented with Swagger/OpenAPI.
    • Enhanced the booking engine, customer-facing websites, and back-office applications.
    • Built business workflows in close collaboration with Marketing and Accounting teams.
    • Delivered corrective maintenance and improvements using Linux, Git, and Jira.

  • PHP / JavaScript Web Developer — PIM & ERP

    April 2017 — August 2019

    TORBEL INDUSTRIE — Nice area, France

    Designed a Product Information Management (PIM) system centralizing product data for labeling, image distribution, e-commerce websites, and the group's ERP.

    • Maintained and extended the AS/400 ERP and SOAP integrations.
    • Developed PrestaShop modules, including PDF generation, and REST integrations.
    • Maintained and improved intranet applications and multiple group websites.
    • Designed a responsive interface to control connected devices through the Domoticz API.
    • Worked closely with Marketing, Communications, and Engineering teams.

Expertise areas

  • PHP backends and business applications

    Development and maintenance of booking platforms, back offices and e-commerce modules.

  • APIs and data integration

    Connections between partner services, websites and internal systems.

  • Payment systems: a distinctive specialty

    Backend work on an international payment platform since 2021, from provider integration to transaction lifecycle handling.

  • Working in an existing technical environment

    I use the tools and workflows of the team I join to develop, verify and document changes.

Domain experience

  • Payments and digital commerce: Nexway: payment platform.
  • Travel and booking: Cruisetech: cruise reservations and back-office workflows.
  • Industry and e-commerce: Torbel: product data, PIM, ERP and PrestaShop.

Education

AFPA training in embedded computing — French level III (Bac +2) · 2007