Implementation Engineer

Remote (U.S. preferred)

Contract ( with potential to extend into full time)

We’re looking for a Contract Implementation Engineer to support merchant onboarding and technical integrations. This role sits at the intersection of Support Engineering, Product, and Customer Success, and is focused on helping partners successfully implement and launch our APIs and checkout flows.

This is a hands-on, execution-oriented role ideal for someone who enjoys working directly with customers, debugging real-world integration issues, and shipping solutions quickly in a fast-moving startup environment.

• Support merchants during onboarding and implementation of our Shopify Payment Method solutions

• Provide guidance on basic Shopify Marketing Best Practices which include building an HSA/FSA landing page, adding Flex badges to the PDP, and targeted email marketing

• Troubleshoot and debug any implementation and post-implementation issues related to both Flex Shopify Payments and Marketing App

• Lead post implementation feature enable for Shopify features (e.g. Subscription Support, Passing telehealth consultation costs to customers)

• 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

• 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
  

Nice to Have:

• Experience supporting payment systems, subscriptions, or checkout flows

• Familiarity with Stripe, Shopify, or other e-commerce platforms

• Experience in a startup or high-growth environment

• Light SQL or data-debugging experience

• Previous experience working with customer-facing technical roles

• Independent Contractor (1099) role, fixed-term

• Flexible hours, with some overlap with U.S. business hours preferred

• Fully remote

• Opportunity to extend or convert based on business needs and performance