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Max S.
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Max S.

API Integration | Integration Architect | System Integration | PM

Experts in API Integration and Integration Architecture for complex business systems. When business systems must exchange data reliably, simple API connections are rarely enough. We design and build production-grade API integrations connecting ERP, CRM, e-commerce platforms, and internal systems - focusing on reliability, observability, and long-term maintainability. Our work centers on custom integrations that support real business operations, not fragile scripts or quick automation hacks. 🧩 What We Do 🔹 API Integration & System Connectivity Design and implementation of reliable API integrations between ERP, CRM, e-commerce, marketing, and internal systems using REST APIs, webhooks, and secure authentication. 🔹 Integration Architecture Design of robust integration architectures including data synchronization strategies, retry logic, monitoring, error handling, and long-term maintainability. 🔹 On-premise Integration Platforms Custom API integration hubs deployed on your infrastructure (Laravel / PHP), including scheduling, logging, monitoring, and full operational control. 🔹 API Development & Consulting End-to-end API development: REST API design, OAuth authentication, webhook processing, multi-system integration strategies, system audits, and integration consulting. 🔹 Data Synchronization Reliable data pipelines between ERP, CRM, analytics, and internal systems with validation, monitoring, and recovery mechanisms. ⚙️ Our Strengths ✅ Strong focus on API integration for complex business workflows (finance, e-commerce, logistics, marketing operations) ✅ Production reliability by default - logging, retries, monitoring, and alerts included ✅ Security-first architecture suitable for on-premise and private cloud deployments ✅ End-to-end ownership - from architecture and API development to deployment and long-term support 🧠 Tech Stack Languages & Frameworks: Laravel / PHP / Node.js / Python Integration Technologies: REST APIs, Webhooks, OAuth, event-driven integrations Platforms & APIs: HubSpot, QuickBooks Online, Xero, Shopify, Acumatica, BigCommerce, Airtable, Slack, Notion, Google Workspace Infrastructure: AWS, DigitalOcean, Docker, Linux 🌟 Why Clients Choose QPMSoft 💼 $400K+ earned on Upwork | 100% Job Success | 10+ years building integration systems 🤝 Clear communication, fast response times, and realistic expectations 🚀 Flexible engagement models - from focused API integrations to long-term integration platforms Whether you need API Integration, custom API Development, or reliable system integrations between ERP, CRM, and e-commerce platforms, we focus on building systems that are stable, maintainable, and production-ready.

🇺🇦Kyiv, Ukraine$60/hr100% JSS5.00 (41)Since Aug 2017

Earnings and projects

MRR
$3.6k

Last 6 months ÷ 6

World#9,466 / 412k
🇺🇦Country#631 / 14.3k
Revenue, last 30 days
$1.3k

Last 6 months: $22k

World#32,778 / 412k
🇺🇦Country#1,494 / 14.3k
Total earnings
$470k

Billed in all: $486k

World#3,195 / 412k
🇺🇦Country#280 / 14.3k
Per project
$8.4k

$1.6k in the last 6 months

World#19,786 / 412k
🇺🇦Country#1,362 / 14.3k
Projects, last 6 months
14

Across 15 contracts

7% fixed93% hourly
World#11,058 / 412k
🇺🇦Country#536 / 14.3k
Projects in all
56

Across 57 contracts

26% fixed74% hourly
World#54,551 / 412k
🇺🇦Country#2,560 / 14.3k

Earnings, last 30 days

$486k+$1.3k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$484k$485k$486k$487kOct 8Oct 23Nov 7

Skill rankings: Top 2% in Marketing API Integration

Ranked by MRR among everyone on Upwork with the skill.

  1. #4Marketing API Integration222 freelancers · 🇺🇦 #1Top 2%
  2. #12Application Integration146 freelancers · 🇺🇦 #1Top 8%
  3. #81Solution Architecture1,009 freelancers · 🇺🇦 #8Top 8%
  4. #166Business Process Automation3,508 freelancers · 🇺🇦 #7Top 5%
  5. #191Make.com5,663 freelancers · 🇺🇦 #6Top 3%
  6. #192REST API5,062 freelancers · 🇺🇦 #19Top 4%
  7. #226RESTful API6,064 freelancers · 🇺🇦 #26Top 4%
  8. #234Zapier7,225 freelancers · 🇺🇦 #7Top 3%