I will integrate payment gateways and apis into your website

K
kristoz
K
kristoz
Kristo G.

About this gig

I connect websites and online stores to the services they depend on: payment gateways, shipping and parcel lockers, POS and ERP systems, accounting software, marketing tools and AI APIs.


Examples of what I build:

  • Payment gateways such as Stripe, PayPal and local bank or card providers, including refunds and webhooks
  • Shipping: courier APIs, parcel locker selection, labels and tracking
  • Stock, product and order sync between your shop and your POS or ERP
  • Sales and payment export to accounting software
  • Webhooks, scheduled sync jobs and CSV, XML or JSON feeds
  • AI features using the OpenAI, Claude or Gemini APIs
  • Automation workflows with n8n


Integrations usually break in the edge cases, so I build for them: duplicate-safe webhooks, retries, logging, alerts and clear error messages, so a missed callback does not become a lost order.


Works with Laravel, PrestaShop, WordPress and WooCommerce, and custom PHP or JavaScript.


Please message me before ordering with the systems you want to connect and links to their API docs, and I will confirm the scope.

Get to know Kristo G.

Kristo G.

Full stack PHP, Laravel and Vue developer for ecommerce, APIs and web apps

  • FromEstonia
  • Member sinceMay 2020
  • Languages

    Estonian, English, Russian, Finnish
I'm a full-stack developer from Estonia (EU). I fix and update websites of any kind: errors, broken pages, slow loading, outdated PHP, plugin or CMS versions, small changes or full upgrades. I also build systems real businesses run on every day: online stores, booking platforms, admin dashboards and API integrations with payment gateways, POS/ERP, couriers and accounting software. Stack: PHP, Laravel, Vue 3, PrestaShop, WordPress, MySQL, JavaScript/TypeScript, Python, Docker. Message me with your problem or project and I'll reply with a clear scope and price.

Other Software Development Services I Offer