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Collins B
@collins_brown34
API integration and Backend Developer
United Kingdom
English, French, German, Spanish
About me
I specialize in building secure, scalable API integrations that help businesses automate workflows, connect systems, and grow efficiently.
With strong experience in WordPress, Shopify, REST, SOAP, XML, and JSON APIs, I develop reliable solutions tailored to real business needs. I focus on clean architecture, seamless data flow, and performance optimization.
Whether it's custom endpoints, ecommerce integrations, or system synchronization, I ensure smooth delivery, clear communication, and long term stability for every project.
I prioritize trust, speed, and high quality results.
Skills
Collins B
Offline •
Average response time: 11 hours
See my services
API & Integrations
I will integrate rest API, json XML API, PHP API into wordpress plugin or website
Analytics & Tracking
I will setup meta facebook pixel conversion API, whatsapp ai chatbot, api integration
Portfolio
Work experience
API Integration Developer
Upwork • Self-employed
Nov 2025 - Present • 9 mos
I specialize in building secure, scalable API integrations that help businesses connect applications, automate workflows, and streamline operations. I have experience working with REST, SOAP, GraphQL, XML, JSON, webhooks, and OAuth authentication to create reliable integrations for real world business needs. My work includes integrating WordPress, Shopify, WooCommerce, payment gateways, CRM platforms, shipping providers, and other third party services. I focus on clean architecture, efficient data synchronization, and long term maintainability to ensure every integration performs reliably. I take pride in writing clean, well documented code, solving complex integration challenges, and delivering solutions that save time, reduce manual work, and improve business efficiency. I value clear communication, timely delivery, and building long term relationships by providing dependable, high quality results on every project.
4 Reviews
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
1-4 out of 4 Reviews
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robbo19998
United Kingdom
Collin is great to work with! And will be working with him again
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mark_p25
Repeat Client
Nigeria
Very skilled developer. He connected our JSON API to WooCommerce and ensured all product updates were automated. Professional, responsive, and knowledgeable throughout the project.
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mark_p25
Repeat Client
Nigeria
Outstanding work! The XML feed was integrated perfectly into my WordPress store, and all products, images, and pricing now sync automatically. Communication was excellent, and the project was completed ahead of schedule.
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owen_mitchell9
United States
Excellent experience working with this seller on our Squarespace API and third-party API integration project. Very professional, fast communication, and the integration worked perfectly. The seller understood exactly what we needed and delivered a smooth, reliable solution on time. Highly recommended for Squarespace API integrations
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