United States of America Remote (Global)

Flex is hiring an Implementation Engineer

As an Implementation Engineer, you'll play a key role in enabling merchant success by guiding the technical onboarding and integration of APIs and checkout systems. You'll work directly with external partners to ensure smooth implementation, troubleshooting issues related to authentication, payment processing, webhooks, and data flow.

What You’ll Do

  • Support merchants through setup and launch, including custom integrations and e-commerce platforms
  • Analyze API requests and responses using tools like Postman and log data to resolve technical hurdles
  • Diagnose and debug problems involving subscriptions, payments, and event-driven webhooks
  • Collaborate with Support Engineering, Product, and Customer Success to escalate bugs and accelerate resolutions
  • Document recurring integration patterns, edge cases, and troubleshooting workflows
  • Perform light configuration or data validation tasks in internal systems when needed

What We’re Looking For

  • At least 2 years in a technical customer-facing role such as implementation, support engineering, or customer engineering
  • Proven experience working with REST APIs, JSON, and HTTP protocols
  • Hands-on familiarity with Postman or similar API testing tools
  • Understanding of webhook architectures and asynchronous event handling
  • Strong written communication skills with a customer-first mindset
  • Ability to manage multiple projects independently in a fast-paced setting
  • Prior experience integrating Shopify platforms is required

Nice to Have

  • Background supporting payment processing, subscription models, or checkout experiences
  • Exposure to Stripe or other e-commerce infrastructure
  • Experience in startup or high-growth environments
  • Basic SQL or data analysis skills for debugging
  • Previous work in technical roles that interface with clients

Work Environment

This is a fully remote contract position with flexible hours, ideal for self-starters who thrive in independent roles. Some overlap with U.S. business hours is preferred. The role offers potential for extension or conversion based on performance and business needs. You’ll operate in a collaborative, execution-focused culture where impact and clarity drive results.

Required Skills
REST APIsJsonPostmanShopifySQLTroubleshootingProblem-Solving
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About company
Flex
Flex is the diversified manufacturing partner of choice that helps market-leading brands design, build and deliver innovative products that improve the world.
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Job Details
Department Software Development
Category other
Posted 4 months ago