Senior Payments Integration Engineer

Reference: PD-103
The Role

We’re looking for a Senior Payments Integration Engineer to join our client to lead end to end delivery of payment integrations for enterprise merchants.
This is a customer facing, hands on technical role where you’ll work closely with merchants, product, and engineering teams to design, implement, and optimise a seamless payment experiences.
If you thrive on solving complex payment challenges, enjoy working directly with customers, and have a strong technical foundation, this role is for you!
 
Day to Day Requirements
  • Lead merchant integrations from onboarding through to go-live and beyond
  • Design and implement payment solutions across APIs, gateways, and acquiring platforms
  • Work directly with clients to support technical integration, testing, and certification
  • Troubleshoot and resolve complex payment and API issues across production environments
  • Support and guide merchants through 3DS, tokenisation, and authentication flows
  • Collaborate with internal teams across product, engineering, and operations
  • Contribute to improving integration processes, documentation, and tooling
  • Act as a trusted technical advisor to clients throughout delivery
 
Must Have Skills
  • Strong hands-on experience with payments integration, including:Payment gateways, acquiring, Card not present (CNP) flows, 3D Secure (3DS), Tokenisation and merchant integrations
  • Proven track record delivering customer-facing integrations such as merchant onboarding, testing and go-live support
  • Solid technical skills in: Java and/or JavaScript, APIs (REST/JSON), SQL and debugging tools (e.g. Postman)
  • Strong troubleshooting ability with experience diagnosing: failed transactions, API issues, Authentication/payment flow errors
Bonus Points
  • Experience with eCommerce platforms (Shopify, Magento, etc.) or payment orchestration
  • Exposure to technical pre-sales or solution design
  • Understanding of ERP/CRM integrations (e.g. SAP, Salesforce, NetSuite)
  • Knowledge of payments lifecycle (settlement, reconciliation, receivables)
A$700.00 - A$1,000.00
Per day
$700 - $1000 per day

Sydney

Contract

Added 21/05/2026
Reference: PD-103

Senior Payments Integration Engineer

Sydney
Contract

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