I will write or integrate any API services for your website (custom CMS, WP, Shopify, Opencart, etc..)
Ecommerce integration, import&sync products/orders
Youtube API - search and fetch video data
Google APIs (gmail, calendar ,search,analytics, docs, etc)
Amazon web services
mailhimp / mandrill / getresponse / sendgrid
payment gateway integration, paypal/skrill/credit card/stripe
Currency exchange, bitcoin calculator
Wordpress API
woocommerce custom shipping / payment plugin
SMS services, send & receive sms
Courier API(dhl / fedex / easyship / stallion, startshipit ...)
shopify app
zalando , sanmar, ajm, debco , mall, ceneje, mimovrste