Implementation Engineer jobs in United States
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Flex · 22 hours ago

Implementation Engineer

positionUnited States
timeFull-time
remoteRemote
seniorityEntry, Mid Level
date2+ years exp

Flex is a company seeking a Contract Implementation Engineer to support merchant onboarding and technical integrations. This role focuses on helping partners successfully implement and launch APIs and checkout flows while troubleshooting integration issues.

ElectronicsManufacturingProduct Design
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H1B Sponsor Likelynote

Responsibilities

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

Qualification

REST APIsPostmanTroubleshootingShopify implementationJSONHTTP requestsWebhooksProblem-solvingWritten communicationIndependent work

Required

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

Preferred

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

Company

Flex

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Glassdoor3.9
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Flex designs, manufactures, and supplies electronics products for the industrial sector.
dateFounded in 1969
location
Singapore, Central Region, SGP
people-size10001+ employees
web-link
https://flex.com

H1B Sponsorship

Flex has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
2024 (1)

Funding

Current Stage
Public Company
Total Funding
$200M
Key Investors
CienaSilver Lake
2023-11-29Post Ipo Equity
2003-03-03Post Ipo Equity· $200M
1994-03-25IPO

Leadership Team

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Revathi Advaithi
Chief Executive Officer
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Kevin Krumm
Chief Financial Officer
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Company data provided by crunchbase