Top Payment Processing freelancers

834 freelancers list Payment Processing on Upwork.

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Showing 50 of 834Data updated Nov 7

# Freelancer		SinceMember since
Owen B. 🇺🇸🇺🇸 CTO / Software Architect / Professional Application Development	$16k↑ 10%	Feb 2018Feb 15, 2018
Anisa H. 🇺🇸🇺🇸 Revenue Cycle Specialist \| Billing, Denials, Credentialing	$10k↑ 5%	Oct 2021Oct 7, 2021
Amanda D. 🇨🇦 NewNew🇨🇦 Payroll Consultant PCP, CPP \| Multi-Provincial & Multi- State Expert	$10k↓ 2%	Jan 2026Jan 26, 2026
4 Mark W. 🇺🇸🇺🇸 API Technical Writer: Open banking \| Payments Processing \| Trading	$10k↑ 5%	Oct 2020Oct 9, 2020
5 Sanja S. 🇷🇸🇷🇸 Fractional Business Operations Manager \| Finance & Process Improvement	$10k↑ 30%	Jan 2017Jan 28, 2017
6 Oleg H. 🇦🇲🇦🇲 Senior Backend Engineer \| Payments & AI Agents \| Java, Spring Boot	$9k↑ 11%	Nov 2018Nov 26, 2018
7 William F. 🇺🇸 NewNew🇺🇸 Forward Deployed AI Engineer \| AI Agents, Automation & Integrations	$6k↓ 1%	May 2025May 20, 2025
8 Muhammad S. 🇵🇰🇵🇰 QuickBooks / Accounting / Bookkeeping / QuickBooks Online	$6k↑ 2%	May 2011May 5, 2011
9 Adam S. 🇺🇸🇺🇸 Sr. Web Developer \| E-commerce \| Web Apps \| Mobile	$6k↑ 4%	Sep 2016Sep 30, 2016
10 Mamta B. 🇨🇦🇨🇦 Stripe Expert \| Payments, Billing & AI Automation \| GoHighLevel	$6k↑ 7%	Sep 2015Sep 1, 2015

Freelancer	MRR	Member since
11 Karthick Raja K. 🇮🇳🇮🇳 High-Risk Merchant Strategist & E-commerce Analytics Expert -15+ Years	$6k↑ 3%	Jan 2020Jan 3, 2020
12 Victoria W. 🇺🇸🇺🇸 Virtual Assistant \| Real Estate VA \| Project MNGT & Organization Pro	$6k↓ 1%	Jul 2025Jul 8, 2025
13 Yuriy S. 🇺🇸🇺🇸 Custom API Integration \| Custom Automation & Payment Systems	$5k↓ 10%	Jan 2018Jan 25, 2018
14 Umer S. 🇵🇰🇵🇰 AI Automations , API Integration Developer & Full Stack Applications	$5k↑ 5%	Jul 2015Jul 27, 2015
15 Joshua V. 🇺🇸🇺🇸 Senior Full-Stack Engineer \| Stripe, Postgres, Claude Code, AI Agents	$5k↑ 2%	Jan 2026Jan 19, 2026
16 Sultan Moin A. 🇵🇰🇵🇰 NetSuite Accounting for Cleanup, Reconciliation and Month-End Close	$5k↑ 2%	Sep 2014Sep 25, 2014
17 Glenda M. 🇵🇭🇵🇭 Debt Collection & AR Recovery Specialist	$5k↑ 4%	Apr 2019Apr 20, 2019
18 Denise Ann B. 🇵🇭Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.🇵🇭 Project Manager \| Social Media \| Customer Service & eCommerce	≈$5k–	Aug 2019Aug 20, 2019
19 Farhan E. 🇺🇸🇺🇸 Medical Billing \| Medical Biller \| Medical Virtual Assistant \| RCM	$5k↑ 3%	Apr 2024Apr 30, 2024
20 Jonathan W. 🇰🇪🇰🇪 Payment & API Integration Developer \| Laravel, WooCommerce, M-Pesa	$4k↑ 4%	Feb 2022Feb 9, 2022

Freelancer	MRR	Member since
21 Qamar L. 🇺🇸🇺🇸 Medical Biller \| Medical Billing Specialist \| RCM & AR Recovery Expert	$4k↑ 21%	Jan 2024Jan 30, 2024
22 LEONARD Y. 🇵🇭🇵🇭 Accountant / Bookkeeper / AR / AP / Payroll / Reconciliation / Audit	$4k↑ 3%	Jul 2014Jul 3, 2014
23 Catherine M. 🇰🇪🇰🇪 Expense Management l Billing Analyst l Accounts Payable & Receivable	$4k↑ 3%	Dec 2014Dec 29, 2014
24 Vien Jan Clarenz V. 🇵🇭🇵🇭 Accounts Receivable & Collections Specialist \| Billing & Subscription	$4k↑ 13%	Jun 2018Jun 28, 2018
25 Arif H. 🇧🇩🇧🇩 Zoho CRM & Zoho Books Operations Specialist \| High-Volume Order Proces	$4k↑ 11%	Jan 2014Jan 17, 2014
26 Iqra Asghar H. 🇵🇰🇵🇰 Medical Billing & Credentialing Expert \| A/R Specialist	$4k↓ 15%	Dec 2025Dec 12, 2025
27 Reshma U. 🇺🇸🇺🇸 Accounting Associate	$4k↑ 3%	Mar 2021Mar 21, 2021
28 Raj Kumar S. 🇮🇳🇮🇳 Medical Billing & Credentialing Expert: HIPPA Certified Medical Biller	$3k↑ 2%	Feb 2017Feb 6, 2017
29 Kharla Stheffane R. 🇧🇷🇧🇷 Accounts Receivable & QuickBooks Specialist \| Financial Operations	$3k↑ 21%	Jan 2024Jan 21, 2024
30 Bhavesh D. 🇺🇸Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.🇺🇸 17yrs \| Architect \| Stripe Certified \| Payment Gateway \| FinTech \| AI	≈$3k–	Mar 2018Mar 9, 2018

Freelancer	MRR	Member since
31 Alan S. 🇨🇳🇨🇳 IoT Sec & Payment \| FULL STACK \| NFC \| Smart Card \| EMV \| PKI \| ESP32	$3k↑ 12%	Apr 2023Apr 5, 2023
32 Jan Christopher D. 🇵🇭🇵🇭 Customer Support Specialist \| SaaS Startups \| Zendesk & Intercom	$3k↑ 5%	Jan 2016Jan 27, 2016
33 Rhea Catherine D. 🇵🇭🇵🇭 Dental Billing Specialist \| Insurance & Claims Management	$3k↑ 10%	Mar 2020Mar 4, 2020
34 Ernie C. 🇵🇭🇵🇭 Financial Reporting \| AR/AP \| Reconciliations \| Forecasting	$3k↑ 4%	Mar 2022Mar 24, 2022
35 Aqaib K. 🇵🇰🇵🇰 Experienced Medical Biller \| HIPAA Certified \| RCM Solutions Provider	$3k↑ 3%	Nov 2021Nov 6, 2021
36 Rebecca R. 🇵🇭🇵🇭 Global Payments Lead \| Workforce Management	$3k↑ 3%	Feb 2010Feb 26, 2010
37 Masaud K. 🇵🇰🇵🇰 Certified Medical Biller \| RCM Specialist \| AR Specialist	$3k↑ 7%	Nov 2017Nov 24, 2017
38 Muhammad J. 🇵🇰🇵🇰 HIPAA Certified Medical Biller, Eligibility & AR Specialist (RCM)	$3k↑ 4%	Sep 2021Sep 21, 2021
39 Julio D. 🇳🇮🇳🇮 Intake/CS/ Back-office/Debt collector/Bilingual Eng-Spa/Compliance	$3k↑ 1%	Jan 2016Jan 11, 2016
40 Anja Z. 🇬🇷🇬🇷 Finance Operations & Intern. Accounting \| Executive VA & Admin Support	$3k↓ 1%	Jan 2019Jan 22, 2019

Freelancer	MRR	Member since
41 Angelie Flor N. 🇵🇭🇵🇭 Admin Support\| Billing Operations\| Data Entry Specialist	$3k↑ 3%	Jun 2017Jun 28, 2017
42 Hamanyoun K. 🇵🇰🇵🇰 Medical Billing & Authorization Specialist \| US Healthcare \| 6+ Years	$3k↑ 14%	Mar 2019Mar 23, 2019
43 Greismar A B. 🇻🇪🇻🇪 Executive & Administrative Assistant \| Accurate Data Entry	$3k↓ 6%	Mar 2022Mar 14, 2022
44 Debbie D. 🇵🇭🇵🇭 Backend Manager and Dispute Manager	$3k↑ 1%	Nov 2016Nov 15, 2016
45 Carolina M. 🇺🇸🇺🇸 Customer Service Manager	$3k↑ 7%	Jul 2012Jul 9, 2012
46 Humaira S. 🇵🇰🇵🇰 Certified Medical Coder & Biller/RCM& Denial Expert/ Virtual Assistant	$3k↓ 3%	Jan 2023Jan 12, 2023
47 Hendra G. 🇮🇩🇮🇩 Full-Stack Engineer \| Ruby on Rails \| Next.js \| Vue.js	$3k↑ 7%	Jan 2013Jan 12, 2013
48 Ivy Kristine A. 🇵🇭🇵🇭 Customer Service Expert	$3k0%	Jan 2012Jan 11, 2012
49 Kyle P. 🇵🇭Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.🇵🇭 Expert Travel Specialist \| Executive Assistant \| Cruise, Flights, Etc	≈$3k–	Oct 2021Oct 20, 2021
50 Manar B. 🇪🇬🇪🇬 Senior .NET Engineer \| Fintech & Payments \| Azure, Microservices	$3k↓ 24%	Apr 2019Apr 29, 2019

From public Upwork profiles, refreshed daily.