Join
Osdire Freelance Marketplace

I will integrate any REST XML API with zapier klaviyo stripe and payment service

API Setup & Simple Integration

Single API integration basic validation documentation

Delivery Time
3 Days
Package Includes: see all
data:image/svg+xml,%3csvg%20width='18'%20height='18'%20viewBox='0%200%2018%2018'%20fill='none'%20xmlns='http://www.w3.org/2000/svg'%3e%3cpath%20d='M2.02684%207.18506L0.777169%208.43236C0.626925%208.58246%200.542442%208.78608%200.542295%208.99845C0.542147%209.21082%200.626347%209.41456%200.776382%209.56486L2.02524%2010.8149L1.56917%2012.517C1.51419%2012.7222%201.54297%2012.9408%201.64918%2013.1248C1.7554%2013.3088%201.93035%2013.443%202.13554%2013.498L3.83684%2013.9539L4.29446%2015.6595C4.3494%2015.8646%204.48357%2016.0396%204.66748%2016.1458C4.7586%2016.1984%204.85918%2016.2326%204.9635%2016.2463C5.06781%2016.26%205.17381%2016.253%205.27543%2016.2258L6.98201%2015.7676L8.23065%2017.0185C8.38086%2017.1687%208.58458%2017.2531%208.79701%2017.2531C9.00943%2017.2531%209.21316%2017.1687%209.36337%2017.0185L10.6135%2015.7696L12.3148%2016.2255C12.52%2016.2805%2012.7386%2016.2517%2012.9226%2016.1455C13.1065%2016.0393%2013.2408%2015.8643%2013.2957%2015.6591L13.7516%2013.9578L15.4582%2013.4997C15.5598%2013.4724%2015.6551%2013.4253%2015.7386%2013.3612C15.822%2013.2971%2015.892%2013.2171%2015.9446%2013.126C15.9971%2013.0348%2016.0312%2012.9341%2016.0448%2012.8297C16.0584%2012.7254%2016.0513%2012.6194%2016.024%2012.5177L15.5654%2010.8127L16.815%209.5654C16.9648%209.415%2017.049%209.21149%2017.0494%208.99923C17.0497%208.78698%2016.9661%208.58321%2016.8168%208.43234L15.5679%207.18225L16.0238%205.48095C16.0788%205.27576%2016.05%205.05713%2015.9438%204.87317C15.8376%204.6892%2015.6626%204.55496%2015.4574%204.49998L13.7554%204.0439L13.2972%202.33733C13.2601%202.20189%2013.1883%202.07844%2013.089%201.97914C12.9897%201.87984%2012.8663%201.80809%2012.7308%201.77097C12.5962%201.7349%2012.4528%201.73462%2012.3152%201.77155L10.6102%202.23015L9.36134%200.980061C9.21124%200.829817%209.00762%200.745334%208.79525%200.745186C8.58288%200.745038%208.37914%200.829237%208.22884%200.979271L6.97952%202.22832L5.27821%201.77246C5.07302%201.71748%204.85439%201.74626%204.67043%201.85248C4.48646%201.95869%204.35222%202.13364%204.29724%202.33883L3.84137%204.04013L2.13479%204.4983C2.03314%204.52559%201.93786%204.57263%201.8544%204.63676C1.77095%204.70088%201.70094%204.78083%201.6484%204.87202C1.59585%204.96321%201.5618%205.06387%201.54818%205.16823C1.53456%205.27259%201.54164%205.37862%201.56902%205.48024L2.02684%207.18506ZM9.69208%2013.3933C9.38422%2013.3107%209.12178%2013.1092%208.96249%2012.8331C8.80321%2012.557%208.76013%2012.229%208.84273%2011.9211C8.92533%2011.6132%209.12685%2011.3508%209.40295%2011.1915C9.67904%2011.0322%2010.0071%2010.9892%2010.315%2011.0718C10.6228%2011.1544%2010.8853%2011.3559%2011.0446%2011.632C11.2038%2011.9081%2011.2469%2012.2361%2011.1643%2012.544C11.0817%2012.8519%2010.8802%2013.1143%2010.6041%2013.2736C10.328%2013.4329%209.99994%2013.4759%209.69208%2013.3933ZM11.4501%205.90391L12.4394%207.16323L6.13894%2012.1088L5.14962%2010.8494L11.4501%205.90391ZM7.89675%204.62011C8.04919%204.66101%208.19208%204.73153%208.31726%204.82766C8.44244%204.92378%208.54747%205.04361%208.62634%205.18032C8.70521%205.31703%208.75638%205.46794%208.77692%205.62442C8.79747%205.78091%208.787%205.93991%208.7461%206.09235C8.7052%206.24478%208.63467%206.38767%208.53855%206.51285C8.44243%206.63803%208.32259%206.74306%208.18588%206.82193C8.04917%206.90079%207.89827%206.95196%207.74178%206.97251C7.5853%206.99306%207.4263%206.98259%207.27386%206.94169C6.966%206.85908%206.70356%206.65757%206.54427%206.38147C6.38499%206.10537%206.34191%205.77731%206.42451%205.46945C6.50711%205.16159%206.70863%204.89915%206.98473%204.73987C7.26082%204.58059%207.58889%204.53751%207.89675%204.62011Z'%20fill='%23D8BC7F'/%3e%3c/svg%3e2

Service details

I integrate REST APIs, payment gateways, and third-party services into your existing systems. With 16 years of software engineering experience and 8 years specializing in payment infrastructure, I deliver reliable integrations that work in production, not just in testing.

What I deliver:

  • REST and XML API integrations with any third-party service: Stripe, PayPal, Shopify, Klaviyo, Twilio, HubSpot, Salesforce, Xero, QuickBooks, and more
  • Payment gateway setup: checkout flows, subscription billing, webhook handling, multi-currency, refund logic, and PCI-compliant architecture
  • Zapier and n8n workflow connections between your tools, with proper error handling and retry logic
  • Webhook receivers and event-driven architectures that process data in real time
  • Authentication and security: OAuth 2.0, API key management, token refresh, rate limiting
  • Data mapping and transformation between systems with different formats or schemas

How I work:

  • Fixed scope, fixed price, concrete deliverable
  • Clean, documented code with proper error handling and logging
  • Full testing before delivery, including edge cases
  • Regular communication and progress updates throughout the project
  • Handover documentation so your team can maintain the integration

I have hands-on production experience with card issuing (VISA, MasterCard), PSP integrations, EMI/BaaS platforms, and prepaid card lifecycle management. Whether you need a simple Stripe checkout or a complex multi-provider payment orchestration layer, I deliver systems built to last.

Key details

  • Programming Language
    JavaScript
Special note from freelancer
8 years in payment infrastructure - VISA, MasterCard, Stripe, card issuing, PSP platforms. I don't just connect APIs, I build integrations that handle edge cases, retries, and failures gracefully.

FAQs

I work with all major APIs including Shopify, WooCommerce, Stripe, PayPal, ChatGPT, Zapier, Make com, n8n automation, Klaviyo, Omnisend, and GoHighLevel. If you have a specific API requirement, feel free to ask!
Amine A

Amine A

Software Engineer |API Integration Specialist |AI Automation Developer

16 years in software engineering. 8 years in payment infrastructure Stripe, PayPal, VISA, MasterCard, card issuing, PSP integrations. I build API integrations, AI powered workflows, and payment pipelines using n8n, Make, Zapier, Python, Node js, and microsoft dotnet. more than 50 projects shipped in the last year. Clean code, clear communication, reliable delivery.

Launch Offer Earn up to $500* extra on your first 10 offers created

Terms and conditions apply