Flex

Implementation Engineer

Flex

contract

Posted on:

Location Type: Remote

Location: United States

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About the role

  • Support merchants during onboarding and implementation of our APIs and checkout solutions
  • Troubleshoot integration issues related to APIs, webhooks, authentication, and payment flows
  • Review and validate API requests/responses using tools like Postman and logs
  • Assist merchants with setup across platforms (e.g., custom integrations, e-commerce platforms)
  • Debug issues related to subscriptions, payments, webhooks, and data mismatches
  • Partner closely with Support Engineering, Product, and Engineering to escalate bugs and unblock launches
  • Help document common implementation patterns, FAQs, and known issues
  • Occasionally assist with light data validation or configuration updates in internal tools

Requirements

  • 2+ years of experience in an implementation, support engineering or customer engineering
  • Comfortable working with REST APIs, JSON, and HTTP requests
  • Experience using Postman (or similar tools) to test and debug APIs
  • Familiarity with webhooks and asynchronous event flows
  • Strong troubleshooting and problem-solving skills
  • Clear, empathetic written communication — you’ll be working directly with external partners
  • Ability to work independently, prioritize tasks, and manage multiple implementations at once
  • Experience in Shopify implementation
Benefits
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Applicant Tracking System Keywords

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Hard Skills & Tools
REST APIsJSONHTTP requeststroubleshootingdebuggingdata validationconfiguration updatespayment flowssubscriptionscustom integrations
Soft Skills
problem-solvingwritten communicationempathyindependencetask prioritizationmultitasking